Vendor gitweb files

6 files changed, 8507 insertions, 6 deletions

diff --git a/files/html/git-favicon.png b/files/html/git-favicon.png
new file mode 100644
index 0000000..aae35a7
--- /dev/null
+++ b/files/html/git-favicon.png
diff --git a/files/html/git-logo.png b/files/html/git-logo.png
new file mode 100644
index 0000000..f4ede2e
--- /dev/null
+++ b/files/html/git-logo.png
diff --git a/files/html/gitweb.css b/files/html/gitweb.css
new file mode 100644
index 0000000..4132aab
--- /dev/null
+++ b/files/html/gitweb.css
@@ -0,0 +1,592 @@
+body {
+	font-family: sans-serif;
+	font-size: small;
+	border: solid #d9d8d1;
+	border-width: 1px;
+	margin: 10px;
+	background-color: #ffffff;
+	color: #000000;
+}
+
+a {
+	color: #0000cc;
+}
+
+a:hover, a:visited, a:active {
+	color: #880000;
+}
+
+span.cntrl {
+	border: dashed #aaaaaa;
+	border-width: 1px;
+	padding: 0px 2px 0px 2px;
+	margin:  0px 2px 0px 2px;
+}
+
+img.logo {
+	float: right;
+	border-width: 0px;
+}
+
+img.avatar {
+	vertical-align: middle;
+}
+
+a.list img.avatar {
+	border-style: none;
+}
+
+div.page_header {
+	height: 25px;
+	padding: 8px;
+	font-size: 150%;
+	font-weight: bold;
+	background-color: #d9d8d1;
+}
+
+div.page_header a:visited, a.header {
+	color: #0000cc;
+}
+
+div.page_header a:hover {
+	color: #880000;
+}
+
+div.page_nav {
+	padding: 8px;
+}
+
+div.page_nav a:visited {
+	color: #0000cc;
+}
+
+div.page_path {
+	padding: 8px;
+	font-weight: bold;
+	border: solid #d9d8d1;
+	border-width: 0px 0px 1px;
+}
+
+div.page_footer {
+	height: 17px;
+	padding: 4px 8px;
+	background-color: #d9d8d1;
+}
+
+div.page_footer_text {
+	float: left;
+	color: #555555;
+	font-style: italic;
+}
+
+div#generating_info {
+	margin: 4px;
+	font-size: smaller;
+	text-align: center;
+	color: #505050;
+}
+
+div.page_body {
+	padding: 8px;
+	font-family: monospace;
+}
+
+div.title, a.title {
+	display: block;
+	padding: 6px 8px;
+	font-weight: bold;
+	background-color: #edece6;
+	text-decoration: none;
+	color: #000000;
+}
+
+div.readme {
+	padding: 8px;
+}
+
+a.title:hover {
+	background-color: #d9d8d1;
+}
+
+div.title_text {
+	padding: 6px 0px;
+	border: solid #d9d8d1;
+	border-width: 0px 0px 1px;
+	font-family: monospace;
+}
+
+div.log_body {
+	padding: 8px 8px 8px 150px;
+}
+
+span.age {
+	position: relative;
+	float: left;
+	width: 142px;
+	font-style: italic;
+}
+
+span.signoff {
+	color: #888888;
+}
+
+div.log_link {
+	padding: 0px 8px;
+	font-size: 70%;
+	font-family: sans-serif;
+	font-style: normal;
+	position: relative;
+	float: left;
+	width: 136px;
+}
+
+div.list_head {
+	padding: 6px 8px 4px;
+	border: solid #d9d8d1;
+	border-width: 1px 0px 0px;
+	font-style: italic;
+}
+
+.author_date, .author {
+	font-style: italic;
+}
+
+div.author_date {
+	padding: 8px;
+	border: solid #d9d8d1;
+	border-width: 0px 0px 1px 0px;
+}
+
+a.list {
+	text-decoration: none;
+	color: #000000;
+}
+
+a.subject, a.name {
+	font-weight: bold;
+}
+
+table.tags a.subject {
+	font-weight: normal;
+}
+
+a.list:hover {
+	text-decoration: underline;
+	color: #880000;
+}
+
+a.text {
+	text-decoration: none;
+	color: #0000cc;
+}
+
+a.text:visited {
+	text-decoration: none;
+	color: #880000;
+}
+
+a.text:hover {
+	text-decoration: underline;
+	color: #880000;
+}
+
+table {
+	padding: 8px 4px;
+	border-spacing: 0;
+}
+
+table.diff_tree {
+	font-family: monospace;
+}
+
+table.combined.diff_tree th {
+	text-align: center;
+}
+
+table.combined.diff_tree td {
+	padding-right: 24px;
+}
+
+table.combined.diff_tree th.link,
+table.combined.diff_tree td.link {
+	padding: 0px 2px;
+}
+
+table.combined.diff_tree td.nochange a {
+	color: #6666ff;
+}
+
+table.combined.diff_tree td.nochange a:hover,
+table.combined.diff_tree td.nochange a:visited {
+	color: #d06666;
+}
+
+table.blame {
+	border-collapse: collapse;
+}
+
+table.blame td {
+	padding: 0px 5px;
+	font-size: 100%;
+	vertical-align: top;
+}
+
+th {
+	padding: 2px 5px;
+	font-size: 100%;
+	text-align: left;
+}
+
+/* do not change row style on hover for 'blame' view */
+tr.light,
+table.blame .light:hover {
+	background-color: #ffffff;
+}
+
+tr.dark,
+table.blame .dark:hover {
+	background-color: #f6f6f0;
+}
+
+/* currently both use the same, but it can change */
+tr.light:hover,
+tr.dark:hover {
+	background-color: #edece6;
+}
+
+/* boundary commits in 'blame' view */
+/* and commits without "previous" */
+tr.boundary td.sha1,
+tr.no-previous td.linenr {
+	font-weight: bold;
+}
+
+/* for 'blame_incremental', during processing */
+tr.color1 { background-color: #f6fff6; }
+tr.color2 { background-color: #f6f6ff; }
+tr.color3 { background-color: #fff6f6; }
+
+td {
+	padding: 2px 5px;
+	font-size: 100%;
+	vertical-align: top;
+}
+
+td.link, td.selflink {
+	padding: 2px 5px;
+	font-family: sans-serif;
+	font-size: 70%;
+}
+
+td.selflink {
+	padding-right: 0px;
+}
+
+td.sha1 {
+	font-family: monospace;
+}
+
+.error {
+	color: red;
+	background-color: yellow;
+}
+
+td.current_head {
+	text-decoration: underline;
+}
+
+table.diff_tree span.file_status.new {
+	color: #008000;
+}
+
+table.diff_tree span.file_status.deleted {
+	color: #c00000;
+}
+
+table.diff_tree span.file_status.moved,
+table.diff_tree span.file_status.mode_chnge {
+	color: #777777;
+}
+
+table.diff_tree span.file_status.copied {
+  color: #70a070;
+}
+
+/* noage: "No commits" */
+table.project_list td.noage {
+	color: #808080;
+	font-style: italic;
+}
+
+/* age2: 60*60*24*2 <= age */
+table.project_list td.age2, table.blame td.age2 {
+	font-style: italic;
+}
+
+/* age1: 60*60*2 <= age < 60*60*24*2 */
+table.project_list td.age1 {
+	color: #009900;
+	font-style: italic;
+}
+
+table.blame td.age1 {
+	color: #009900;
+	background: transparent;
+}
+
+/* age0: age < 60*60*2 */
+table.project_list td.age0 {
+	color: #009900;
+	font-style: italic;
+	font-weight: bold;
+}
+
+table.blame td.age0 {
+	color: #009900;
+	background: transparent;
+	font-weight: bold;
+}
+
+td.pre, div.pre, div.diff {
+	font-family: monospace;
+	font-size: 12px;
+	white-space: pre;
+}
+
+td.mode {
+	font-family: monospace;
+}
+
+/* progress of blame_interactive */
+div#progress_bar {
+	height: 2px;
+	margin-bottom: -2px;
+	background-color: #d8d9d0;
+}
+div#progress_info {
+	float: right;
+	text-align: right;
+}
+
+/* format of (optional) objects size in 'tree' view */
+td.size {
+	font-family: monospace;
+	text-align: right;
+}
+
+/* styling of diffs (patchsets): commitdiff and blobdiff views */
+div.diff.header,
+div.diff.extended_header {
+	white-space: normal;
+}
+
+div.diff.header {
+	font-weight: bold;
+
+	background-color: #edece6;
+
+	margin-top: 4px;
+	padding: 4px 0px 2px 0px;
+	border: solid #d9d8d1;
+	border-width: 1px 0px 1px 0px;
+}
+
+div.diff.header a.path {
+	text-decoration: underline;
+}
+
+div.diff.extended_header,
+div.diff.extended_header a.path,
+div.diff.extended_header a.hash {
+	color: #777777;
+}
+
+div.diff.extended_header .info {
+	color: #b0b0b0;
+}
+
+div.diff.extended_header {
+	background-color: #f6f5ee;
+	padding: 2px 0px 2px 0px;
+}
+
+div.diff a.list,
+div.diff a.path,
+div.diff a.hash {
+	text-decoration: none;
+}
+
+div.diff a.list:hover,
+div.diff a.path:hover,
+div.diff a.hash:hover {
+	text-decoration: underline;
+}
+
+div.diff.to_file a.path,
+div.diff.to_file {
+	color: #007000;
+}
+
+div.diff.add {
+	color: #008800;
+}
+
+div.diff.from_file a.path,
+div.diff.from_file {
+	color: #aa0000;
+}
+
+div.diff.rem {
+	color: #cc0000;
+}
+
+div.diff.chunk_header a,
+div.diff.chunk_header {
+	color: #990099;
+}
+
+div.diff.chunk_header {
+	border: dotted #ffe0ff;
+	border-width: 1px 0px 0px 0px;
+	margin-top: 2px;
+}
+
+div.diff.chunk_header span.chunk_info {
+	background-color: #ffeeff;
+}
+
+div.diff.chunk_header span.section {
+	color: #aa22aa;
+}
+
+div.diff.incomplete {
+	color: #cccccc;
+}
+
+div.diff.nodifferences {
+	font-weight: bold;
+	color: #600000;
+}
+
+div.index_include {
+	border: solid #d9d8d1;
+	border-width: 0px 0px 1px;
+	padding: 12px 8px;
+}
+
+div.search {
+	font-size: 100%;
+	font-weight: normal;
+	margin: 4px 8px;
+	float: right;
+	top: 56px;
+	right: 12px
+}
+
+p.projsearch {
+	text-align: center;
+}
+
+td.linenr {
+	text-align: right;
+}
+
+a.linenr {
+	color: #999999;
+	text-decoration: none
+}
+
+a.rss_logo {
+	float: right;
+	padding: 3px 0px;
+	width: 35px;
+	line-height: 10px;
+	border: 1px solid;
+	border-color: #fcc7a5 #7d3302 #3e1a01 #ff954e;
+	color: #ffffff;
+	background-color: #ff6600;
+	font-weight: bold;
+	font-family: sans-serif;
+	font-size: 70%;
+	text-align: center;
+	text-decoration: none;
+}
+
+a.rss_logo:hover {
+	background-color: #ee5500;
+}
+
+a.rss_logo.generic {
+	background-color: #ff8800;
+}
+
+a.rss_logo.generic:hover {
+	background-color: #ee7700;
+}
+
+span.refs span {
+	padding: 0px 4px;
+	font-size: 70%;
+	font-weight: normal;
+	border: 1px solid;
+	background-color: #ffaaff;
+	border-color: #ffccff #ff00ee #ff00ee #ffccff;
+}
+
+span.refs span a {
+	text-decoration: none;
+	color: inherit;
+}
+
+span.refs span a:hover {
+	text-decoration: underline;
+}
+
+span.refs span.indirect {
+	font-style: italic;
+}
+
+span.refs span.ref {
+	background-color: #aaaaff;
+	border-color: #ccccff #0033cc #0033cc #ccccff;
+}
+
+span.refs span.tag {
+	background-color: #ffffaa;
+	border-color: #ffffcc #ffee00 #ffee00 #ffffcc;
+}
+
+span.refs span.head {
+	background-color: #aaffaa;
+	border-color: #ccffcc #00cc33 #00cc33 #ccffcc;
+}
+
+span.atnight {
+	color: #cc0000;
+}
+
+span.match {
+	color: #e00000;
+}
+
+div.binary {
+	font-style: italic;
+}
+
+/* Style definition generated by highlight 2.4.5, http://www.andre-simon.de/ */
+
+/* Highlighting theme definition: */
+
+.num    { color:#2928ff; }
+.esc    { color:#ff00ff; }
+.str    { color:#ff0000; }
+.dstr   { color:#818100; }
+.slc    { color:#838183; font-style:italic; }
+.com    { color:#838183; font-style:italic; }
+.dir    { color:#008200; }
+.sym    { color:#000000; }
+.line   { color:#555555; }
+.kwa    { color:#000000; font-weight:bold; }
+.kwb    { color:#830000; }
+.kwc    { color:#000000; font-weight:bold; }
+.kwd    { color:#010181; }
diff --git a/files/html/gitweb.js b/files/html/gitweb.js
new file mode 100644
index 0000000..9c66928
--- /dev/null
+++ b/files/html/gitweb.js
@@ -0,0 +1,875 @@
+// Copyright (C) 2007, Fredrik Kuivinen <frekui@gmail.com>
+//               2007, Petr Baudis <pasky@suse.cz>
+//          2008-2009, Jakub Narebski <jnareb@gmail.com>
+
+/**
+ * @fileOverview JavaScript code for gitweb (git web interface).
+ * @license GPLv2 or later
+ */
+
+/* ============================================================ */
+/* functions for generic gitweb actions and views */
+
+/**
+ * used to check if link has 'js' query parameter already (at end),
+ * and other reasons to not add 'js=1' param at the end of link
+ * @constant
+ */
+var jsExceptionsRe = /[;?]js=[01]$/;
+
+/**
+ * Add '?js=1' or ';js=1' to the end of every link in the document
+ * that doesn't have 'js' query parameter set already.
+ *
+ * Links with 'js=1' lead to JavaScript version of given action, if it
+ * exists (currently there is only 'blame_incremental' for 'blame')
+ *
+ * @globals jsExceptionsRe
+ */
+function fixLinks() {
+	var allLinks = document.getElementsByTagName("a") || document.links;
+	for (var i = 0, len = allLinks.length; i < len; i++) {
+		var link = allLinks[i];
+		if (!jsExceptionsRe.test(link)) { // =~ /[;?]js=[01]$/;
+			link.href +=
+				(link.href.indexOf('?') === -1 ? '?' : ';') + 'js=1';
+		}
+	}
+}
+
+
+/* ============================================================ */
+
+/*
+ * This code uses DOM methods instead of (nonstandard) innerHTML
+ * to modify page.
+ *
+ * innerHTML is non-standard IE extension, though supported by most
+ * browsers; however Firefox up to version 1.5 didn't implement it in
+ * a strict mode (application/xml+xhtml mimetype).
+ *
+ * Also my simple benchmarks show that using elem.firstChild.data =
+ * 'content' is slightly faster than elem.innerHTML = 'content'.  It
+ * is however more fragile (text element fragment must exists), and
+ * less feature-rich (we cannot add HTML).
+ *
+ * Note that DOM 2 HTML is preferred over generic DOM 2 Core; the
+ * equivalent using DOM 2 Core is usually shown in comments.
+ */
+
+
+/* ============================================================ */
+/* generic utility functions */
+
+
+/**
+ * pad number N with nonbreakable spaces on the left, to WIDTH characters
+ * example: padLeftStr(12, 3, '\u00A0') == '\u00A012'
+ *          ('\u00A0' is nonbreakable space)
+ *
+ * @param {Number|String} input: number to pad
+ * @param {Number} width: visible width of output
+ * @param {String} str: string to prefix to string, e.g. '\u00A0'
+ * @returns {String} INPUT prefixed with (WIDTH - INPUT.length) x STR
+ */
+function padLeftStr(input, width, str) {
+	var prefix = '';
+
+	width -= input.toString().length;
+	while (width > 0) {
+		prefix += str;
+		width--;
+	}
+	return prefix + input;
+}
+
+/**
+ * Pad INPUT on the left to SIZE width, using given padding character CH,
+ * for example padLeft('a', 3, '_') is '__a'.
+ *
+ * @param {String} input: input value converted to string.
+ * @param {Number} width: desired length of output.
+ * @param {String} ch: single character to prefix to string.
+ *
+ * @returns {String} Modified string, at least SIZE length.
+ */
+function padLeft(input, width, ch) {
+	var s = input + "";
+	while (s.length < width) {
+		s = ch + s;
+	}
+	return s;
+}
+
+/**
+ * Create XMLHttpRequest object in cross-browser way
+ * @returns XMLHttpRequest object, or null
+ */
+function createRequestObject() {
+	try {
+		return new XMLHttpRequest();
+	} catch (e) {}
+	try {
+		return window.createRequest();
+	} catch (e) {}
+	try {
+		return new ActiveXObject("Msxml2.XMLHTTP");
+	} catch (e) {}
+	try {
+		return new ActiveXObject("Microsoft.XMLHTTP");
+	} catch (e) {}
+
+	return null;
+}
+
+
+/* ============================================================ */
+/* utility/helper functions (and variables) */
+
+var xhr;        // XMLHttpRequest object
+var projectUrl; // partial query + separator ('?' or ';')
+
+// 'commits' is an associative map. It maps SHA1s to Commit objects.
+var commits = {};
+
+/**
+ * constructor for Commit objects, used in 'blame'
+ * @class Represents a blamed commit
+ * @param {String} sha1: SHA-1 identifier of a commit
+ */
+function Commit(sha1) {
+	if (this instanceof Commit) {
+		this.sha1 = sha1;
+		this.nprevious = 0; /* number of 'previous', effective parents */
+	} else {
+		return new Commit(sha1);
+	}
+}
+
+/* ............................................................ */
+/* progress info, timing, error reporting */
+
+var blamedLines = 0;
+var totalLines  = '???';
+var div_progress_bar;
+var div_progress_info;
+
+/**
+ * Detects how many lines does a blamed file have,
+ * This information is used in progress info
+ *
+ * @returns {Number|String} Number of lines in file, or string '...'
+ */
+function countLines() {
+	var table =
+		document.getElementById('blame_table') ||
+		document.getElementsByTagName('table')[0];
+
+	if (table) {
+		return table.getElementsByTagName('tr').length - 1; // for header
+	} else {
+		return '...';
+	}
+}
+
+/**
+ * update progress info and length (width) of progress bar
+ *
+ * @globals div_progress_info, div_progress_bar, blamedLines, totalLines
+ */
+function updateProgressInfo() {
+	if (!div_progress_info) {
+		div_progress_info = document.getElementById('progress_info');
+	}
+	if (!div_progress_bar) {
+		div_progress_bar = document.getElementById('progress_bar');
+	}
+	if (!div_progress_info && !div_progress_bar) {
+		return;
+	}
+
+	var percentage = Math.floor(100.0*blamedLines/totalLines);
+
+	if (div_progress_info) {
+		div_progress_info.firstChild.data  = blamedLines + ' / ' + totalLines +
+			' (' + padLeftStr(percentage, 3, '\u00A0') + '%)';
+	}
+
+	if (div_progress_bar) {
+		//div_progress_bar.setAttribute('style', 'width: '+percentage+'%;');
+		div_progress_bar.style.width = percentage + '%';
+	}
+}
+
+
+var t_interval_server = '';
+var cmds_server = '';
+var t0 = new Date();
+
+/**
+ * write how much it took to generate data, and to run script
+ *
+ * @globals t0, t_interval_server, cmds_server
+ */
+function writeTimeInterval() {
+	var info_time = document.getElementById('generating_time');
+	if (!info_time || !t_interval_server) {
+		return;
+	}
+	var t1 = new Date();
+	info_time.firstChild.data += ' + (' +
+		t_interval_server + ' sec server blame_data / ' +
+		(t1.getTime() - t0.getTime())/1000 + ' sec client JavaScript)';
+
+	var info_cmds = document.getElementById('generating_cmd');
+	if (!info_time || !cmds_server) {
+		return;
+	}
+	info_cmds.firstChild.data += ' + ' + cmds_server;
+}
+
+/**
+ * show an error message alert to user within page (in prohress info area)
+ * @param {String} str: plain text error message (no HTML)
+ *
+ * @globals div_progress_info
+ */
+function errorInfo(str) {
+	if (!div_progress_info) {
+		div_progress_info = document.getElementById('progress_info');
+	}
+	if (div_progress_info) {
+		div_progress_info.className = 'error';
+		div_progress_info.firstChild.data = str;
+	}
+}
+
+/* ............................................................ */
+/* coloring rows during blame_data (git blame --incremental) run */
+
+/**
+ * used to extract N from 'colorN', where N is a number,
+ * @constant
+ */
+var colorRe = /\bcolor([0-9]*)\b/;
+
+/**
+ * return N if <tr class="colorN">, otherwise return null
+ * (some browsers require CSS class names to begin with letter)
+ *
+ * @param {HTMLElement} tr: table row element to check
+ * @param {String} tr.className: 'class' attribute of tr element
+ * @returns {Number|null} N if tr.className == 'colorN', otherwise null
+ *
+ * @globals colorRe
+ */
+function getColorNo(tr) {
+	if (!tr) {
+		return null;
+	}
+	var className = tr.className;
+	if (className) {
+		var match = colorRe.exec(className);
+		if (match) {
+			return parseInt(match[1], 10);
+		}
+	}
+	return null;
+}
+
+var colorsFreq = [0, 0, 0];
+/**
+ * return one of given possible colors (curently least used one)
+ * example: chooseColorNoFrom(2, 3) returns 2 or 3
+ *
+ * @param {Number[]} arguments: one or more numbers
+ *        assumes that  1 <= arguments[i] <= colorsFreq.length
+ * @returns {Number} Least used color number from arguments
+ * @globals colorsFreq
+ */
+function chooseColorNoFrom() {
+	// choose the color which is least used
+	var colorNo = arguments[0];
+	for (var i = 1; i < arguments.length; i++) {
+		if (colorsFreq[arguments[i]-1] < colorsFreq[colorNo-1]) {
+			colorNo = arguments[i];
+		}
+	}
+	colorsFreq[colorNo-1]++;
+	return colorNo;
+}
+
+/**
+ * given two neigbour <tr> elements, find color which would be different
+ * from color of both of neighbours; used to 3-color blame table
+ *
+ * @param {HTMLElement} tr_prev
+ * @param {HTMLElement} tr_next
+ * @returns {Number} color number N such that
+ * colorN != tr_prev.className && colorN != tr_next.className
+ */
+function findColorNo(tr_prev, tr_next) {
+	var color_prev = getColorNo(tr_prev);
+	var color_next = getColorNo(tr_next);
+
+
+	// neither of neighbours has color set
+	// THEN we can use any of 3 possible colors
+	if (!color_prev && !color_next) {
+		return chooseColorNoFrom(1,2,3);
+	}
+
+	// either both neighbours have the same color,
+	// or only one of neighbours have color set
+	// THEN we can use any color except given
+	var color;
+	if (color_prev === color_next) {
+		color = color_prev; // = color_next;
+	} else if (!color_prev) {
+		color = color_next;
+	} else if (!color_next) {
+		color = color_prev;
+	}
+	if (color) {
+		return chooseColorNoFrom((color % 3) + 1, ((color+1) % 3) + 1);
+	}
+
+	// neighbours have different colors
+	// THEN there is only one color left
+	return (3 - ((color_prev + color_next) % 3));
+}
+
+/* ............................................................ */
+/* coloring rows like 'blame' after 'blame_data' finishes */
+
+/**
+ * returns true if given row element (tr) is first in commit group
+ * to be used only after 'blame_data' finishes (after processing)
+ *
+ * @param {HTMLElement} tr: table row
+ * @returns {Boolean} true if TR is first in commit group
+ */
+function isStartOfGroup(tr) {
+	return tr.firstChild.className === 'sha1';
+}
+
+/**
+ * change colors to use zebra coloring (2 colors) instead of 3 colors
+ * concatenate neighbour commit groups belonging to the same commit
+ *
+ * @globals colorRe
+ */
+function fixColorsAndGroups() {
+	var colorClasses = ['light', 'dark'];
+	var linenum = 1;
+	var tr, prev_group;
+	var colorClass = 0;
+	var table =
+		document.getElementById('blame_table') ||
+		document.getElementsByTagName('table')[0];
+
+	while ((tr = document.getElementById('l'+linenum))) {
+	// index origin is 0, which is table header; start from 1
+	//while ((tr = table.rows[linenum])) { // <- it is slower
+		if (isStartOfGroup(tr, linenum, document)) {
+			if (prev_group &&
+			    prev_group.firstChild.firstChild.href ===
+			            tr.firstChild.firstChild.href) {
+				// we have to concatenate groups
+				var prev_rows = prev_group.firstChild.rowSpan || 1;
+				var curr_rows =         tr.firstChild.rowSpan || 1;
+				prev_group.firstChild.rowSpan = prev_rows + curr_rows;
+				//tr.removeChild(tr.firstChild);
+				tr.deleteCell(0); // DOM2 HTML way
+			} else {
+				colorClass = (colorClass + 1) % 2;
+				prev_group = tr;
+			}
+		}
+		var tr_class = tr.className;
+		tr.className = tr_class.replace(colorRe, colorClasses[colorClass]);
+		linenum++;
+	}
+}
+
+/* ............................................................ */
+/* time and data */
+
+/**
+ * used to extract hours and minutes from timezone info, e.g '-0900'
+ * @constant
+ */
+var tzRe = /^([+-][0-9][0-9])([0-9][0-9])$/;
+
+/**
+ * return date in local time formatted in iso-8601 like format
+ * 'yyyy-mm-dd HH:MM:SS +/-ZZZZ' e.g. '2005-08-07 21:49:46 +0200'
+ *
+ * @param {Number} epoch: seconds since '00:00:00 1970-01-01 UTC'
+ * @param {String} timezoneInfo: numeric timezone '(+|-)HHMM'
+ * @returns {String} date in local time in iso-8601 like format
+ *
+ * @globals tzRe
+ */
+function formatDateISOLocal(epoch, timezoneInfo) {
+	var match = tzRe.exec(timezoneInfo);
+	// date corrected by timezone
+	var localDate = new Date(1000 * (epoch +
+		(parseInt(match[1],10)*3600 + parseInt(match[2],10)*60)));
+	var localDateStr = // e.g. '2005-08-07'
+		localDate.getUTCFullYear()                 + '-' +
+		padLeft(localDate.getUTCMonth()+1, 2, '0') + '-' +
+		padLeft(localDate.getUTCDate(),    2, '0');
+	var localTimeStr = // e.g. '21:49:46'
+		padLeft(localDate.getUTCHours(),   2, '0') + ':' +
+		padLeft(localDate.getUTCMinutes(), 2, '0') + ':' +
+		padLeft(localDate.getUTCSeconds(), 2, '0');
+
+	return localDateStr + ' ' + localTimeStr + ' ' + timezoneInfo;
+}
+
+/* ............................................................ */
+/* unquoting/unescaping filenames */
+
+/**#@+
+ * @constant
+ */
+var escCodeRe = /\\([^0-7]|[0-7]{1,3})/g;
+var octEscRe = /^[0-7]{1,3}$/;
+var maybeQuotedRe = /^\"(.*)\"$/;
+/**#@-*/
+
+/**
+ * unquote maybe git-quoted filename
+ * e.g. 'aa' -> 'aa', '"a\ta"' -> 'a	a'
+ *
+ * @param {String} str: git-quoted string
+ * @returns {String} Unquoted and unescaped string
+ *
+ * @globals escCodeRe, octEscRe, maybeQuotedRe
+ */
+function unquote(str) {
+	function unq(seq) {
+		var es = {
+			// character escape codes, aka escape sequences (from C)
+			// replacements are to some extent JavaScript specific
+			t: "\t",   // tab            (HT, TAB)
+			n: "\n",   // newline        (NL)
+			r: "\r",   // return         (CR)
+			f: "\f",   // form feed      (FF)
+			b: "\b",   // backspace      (BS)
+			a: "\x07", // alarm (bell)   (BEL)
+			e: "\x1B", // escape         (ESC)
+			v: "\v"    // vertical tab   (VT)
+		};
+
+		if (seq.search(octEscRe) !== -1) {
+			// octal char sequence
+			return String.fromCharCode(parseInt(seq, 8));
+		} else if (seq in es) {
+			// C escape sequence, aka character escape code
+			return es[seq];
+		}
+		// quoted ordinary character
+		return seq;
+	}
+
+	var match = str.match(maybeQuotedRe);
+	if (match) {
+		str = match[1];
+		// perhaps str = eval('"'+str+'"'); would be enough?
+		str = str.replace(escCodeRe,
+			function (substr, p1, offset, s) { return unq(p1); });
+	}
+	return str;
+}
+
+/* ============================================================ */
+/* main part: parsing response */
+
+/**
+ * Function called for each blame entry, as soon as it finishes.
+ * It updates page via DOM manipulation, adding sha1 info, etc.
+ *
+ * @param {Commit} commit: blamed commit
+ * @param {Object} group: object representing group of lines,
+ *                        which blame the same commit (blame entry)
+ *
+ * @globals blamedLines
+ */
+function handleLine(commit, group) {
+	/*
+	   This is the structure of the HTML fragment we are working
+	   with:
+
+	   <tr id="l123" class="">
+	     <td class="sha1" title=""><a href=""> </a></td>
+	     <td class="linenr"><a class="linenr" href="">123</a></td>
+	     <td class="pre"># times (my ext3 doesn&#39;t).</td>
+	   </tr>
+	*/
+
+	var resline = group.resline;
+
+	// format date and time string only once per commit
+	if (!commit.info) {
+		/* e.g. 'Kay Sievers, 2005-08-07 21:49:46 +0200' */
+		commit.info = commit.author + ', ' +
+			formatDateISOLocal(commit.authorTime, commit.authorTimezone);
+	}
+
+	// color depends on group of lines, not only on blamed commit
+	var colorNo = findColorNo(
+		document.getElementById('l'+(resline-1)),
+		document.getElementById('l'+(resline+group.numlines))
+	);
+
+	// loop over lines in commit group
+	for (var i = 0; i < group.numlines; i++, resline++) {
+		var tr = document.getElementById('l'+resline);
+		if (!tr) {
+			break;
+		}
+		/*
+			<tr id="l123" class="">
+			  <td class="sha1" title=""><a href=""> </a></td>
+			  <td class="linenr"><a class="linenr" href="">123</a></td>
+			  <td class="pre"># times (my ext3 doesn&#39;t).</td>
+			</tr>
+		*/
+		var td_sha1  = tr.firstChild;
+		var a_sha1   = td_sha1.firstChild;
+		var a_linenr = td_sha1.nextSibling.firstChild;
+
+		/* <tr id="l123" class=""> */
+		var tr_class = '';
+		if (colorNo !== null) {
+			tr_class = 'color'+colorNo;
+		}
+		if (commit.boundary) {
+			tr_class += ' boundary';
+		}
+		if (commit.nprevious === 0) {
+			tr_class += ' no-previous';
+		} else if (commit.nprevious > 1) {
+			tr_class += ' multiple-previous';
+		}
+		tr.className = tr_class;
+
+		/* <td class="sha1" title="?" rowspan="?"><a href="?">?</a></td> */
+		if (i === 0) {
+			td_sha1.title = commit.info;
+			td_sha1.rowSpan = group.numlines;
+
+			a_sha1.href = projectUrl + 'a=commit;h=' + commit.sha1;
+			if (a_sha1.firstChild) {
+				a_sha1.firstChild.data = commit.sha1.substr(0, 8);
+			} else {
+				a_sha1.appendChild(
+					document.createTextNode(commit.sha1.substr(0, 8)));
+			}
+			if (group.numlines >= 2) {
+				var fragment = document.createDocumentFragment();
+				var br   = document.createElement("br");
+				var match = commit.author.match(/\b([A-Z])\B/g);
+				if (match) {
+					var text = document.createTextNode(
+							match.join(''));
+				}
+				if (br && text) {
+					var elem = fragment || td_sha1;
+					elem.appendChild(br);
+					elem.appendChild(text);
+					if (fragment) {
+						td_sha1.appendChild(fragment);
+					}
+				}
+			}
+		} else {
+			//tr.removeChild(td_sha1); // DOM2 Core way
+			tr.deleteCell(0); // DOM2 HTML way
+		}
+
+		/* <td class="linenr"><a class="linenr" href="?">123</a></td> */
+		var linenr_commit =
+			('previous' in commit ? commit.previous : commit.sha1);
+		var linenr_filename =
+			('file_parent' in commit ? commit.file_parent : commit.filename);
+		a_linenr.href = projectUrl + 'a=blame_incremental' +
+			';hb=' + linenr_commit +
+			';f='  + encodeURIComponent(linenr_filename) +
+			'#l' + (group.srcline + i);
+
+		blamedLines++;
+
+		//updateProgressInfo();
+	}
+}
+
+// ----------------------------------------------------------------------
+
+var inProgress = false;   // are we processing response
+
+/**#@+
+ * @constant
+ */
+var sha1Re = /^([0-9a-f]{40}) ([0-9]+) ([0-9]+) ([0-9]+)/;
+var infoRe = /^([a-z-]+) ?(.*)/;
+var endRe  = /^END ?([^ ]*) ?(.*)/;
+/**@-*/
+
+var curCommit = new Commit();
+var curGroup  = {};
+
+var pollTimer = null;
+
+/**
+ * Parse output from 'git blame --incremental [...]', received via
+ * XMLHttpRequest from server (blamedataUrl), and call handleLine
+ * (which updates page) as soon as blame entry is completed.
+ *
+ * @param {String[]} lines: new complete lines from blamedata server
+ *
+ * @globals commits, curCommit, curGroup, t_interval_server, cmds_server
+ * @globals sha1Re, infoRe, endRe
+ */
+function processBlameLines(lines) {
+	var match;
+
+	for (var i = 0, len = lines.length; i < len; i++) {
+
+		if ((match = sha1Re.exec(lines[i]))) {
+			var sha1 = match[1];
+			var srcline  = parseInt(match[2], 10);
+			var resline  = parseInt(match[3], 10);
+			var numlines = parseInt(match[4], 10);
+
+			var c = commits[sha1];
+			if (!c) {
+				c = new Commit(sha1);
+				commits[sha1] = c;
+			}
+			curCommit = c;
+
+			curGroup.srcline = srcline;
+			curGroup.resline = resline;
+			curGroup.numlines = numlines;
+
+		} else if ((match = infoRe.exec(lines[i]))) {
+			var info = match[1];
+			var data = match[2];
+			switch (info) {
+			case 'filename':
+				curCommit.filename = unquote(data);
+				// 'filename' information terminates the entry
+				handleLine(curCommit, curGroup);
+				updateProgressInfo();
+				break;
+			case 'author':
+				curCommit.author = data;
+				break;
+			case 'author-time':
+				curCommit.authorTime = parseInt(data, 10);
+				break;
+			case 'author-tz':
+				curCommit.authorTimezone = data;
+				break;
+			case 'previous':
+				curCommit.nprevious++;
+				// store only first 'previous' header
+				if (!'previous' in curCommit) {
+					var parts = data.split(' ', 2);
+					curCommit.previous    = parts[0];
+					curCommit.file_parent = unquote(parts[1]);
+				}
+				break;
+			case 'boundary':
+				curCommit.boundary = true;
+				break;
+			} // end switch
+
+		} else if ((match = endRe.exec(lines[i]))) {
+			t_interval_server = match[1];
+			cmds_server = match[2];
+
+		} else if (lines[i] !== '') {
+			// malformed line
+
+		} // end if (match)
+
+	} // end for (lines)
+}
+
+/**
+ * Process new data and return pointer to end of processed part
+ *
+ * @param {String} unprocessed: new data (from nextReadPos)
+ * @param {Number} nextReadPos: end of last processed data
+ * @return {Number} end of processed data (new value for nextReadPos)
+ */
+function processData(unprocessed, nextReadPos) {
+	var lastLineEnd = unprocessed.lastIndexOf('\n');
+	if (lastLineEnd !== -1) {
+		var lines = unprocessed.substring(0, lastLineEnd).split('\n');
+		nextReadPos += lastLineEnd + 1 /* 1 == '\n'.length */;
+
+		processBlameLines(lines);
+	} // end if
+
+	return nextReadPos;
+}
+
+/**
+ * Handle XMLHttpRequest errors
+ *
+ * @param {XMLHttpRequest} xhr: XMLHttpRequest object
+ *
+ * @globals pollTimer, commits, inProgress
+ */
+function handleError(xhr) {
+	errorInfo('Server error: ' +
+		xhr.status + ' - ' + (xhr.statusText || 'Error contacting server'));
+
+	clearInterval(pollTimer);
+	commits = {}; // free memory
+
+	inProgress = false;
+}
+
+/**
+ * Called after XMLHttpRequest finishes (loads)
+ *
+ * @param {XMLHttpRequest} xhr: XMLHttpRequest object (unused)
+ *
+ * @globals pollTimer, commits, inProgress
+ */
+function responseLoaded(xhr) {
+	clearInterval(pollTimer);
+
+	fixColorsAndGroups();
+	writeTimeInterval();
+	commits = {}; // free memory
+
+	inProgress = false;
+}
+
+/**
+ * handler for XMLHttpRequest onreadystatechange event
+ * @see startBlame
+ *
+ * @globals xhr, inProgress
+ */
+function handleResponse() {
+
+	/*
+	 * xhr.readyState
+	 *
+	 *  Value  Constant (W3C)    Description
+	 *  -------------------------------------------------------------------
+	 *  0      UNSENT            open() has not been called yet.
+	 *  1      OPENED            send() has not been called yet.
+	 *  2      HEADERS_RECEIVED  send() has been called, and headers
+	 *                           and status are available.
+	 *  3      LOADING           Downloading; responseText holds partial data.
+	 *  4      DONE              The operation is complete.
+	 */
+
+	if (xhr.readyState !== 4 && xhr.readyState !== 3) {
+		return;
+	}
+
+	// the server returned error
+	// try ... catch block is to work around bug in IE8
+	try {
+		if (xhr.readyState === 3 && xhr.status !== 200) {
+			return;
+		}
+	} catch (e) {
+		return;
+	}
+	if (xhr.readyState === 4 && xhr.status !== 200) {
+		handleError(xhr);
+		return;
+	}
+
+	// In konqueror xhr.responseText is sometimes null here...
+	if (xhr.responseText === null) {
+		return;
+	}
+
+	// in case we were called before finished processing
+	if (inProgress) {
+		return;
+	} else {
+		inProgress = true;
+	}
+
+	// extract new whole (complete) lines, and process them
+	while (xhr.prevDataLength !== xhr.responseText.length) {
+		if (xhr.readyState === 4 &&
+		    xhr.prevDataLength === xhr.responseText.length) {
+			break;
+		}
+
+		xhr.prevDataLength = xhr.responseText.length;
+		var unprocessed = xhr.responseText.substring(xhr.nextReadPos);
+		xhr.nextReadPos = processData(unprocessed, xhr.nextReadPos);
+	} // end while
+
+	// did we finish work?
+	if (xhr.readyState === 4 &&
+	    xhr.prevDataLength === xhr.responseText.length) {
+		responseLoaded(xhr);
+	}
+
+	inProgress = false;
+}
+
+// ============================================================
+// ------------------------------------------------------------
+
+/**
+ * Incrementally update line data in blame_incremental view in gitweb.
+ *
+ * @param {String} blamedataUrl: URL to server script generating blame data.
+ * @param {String} bUrl: partial URL to project, used to generate links.
+ *
+ * Called from 'blame_incremental' view after loading table with
+ * file contents, a base for blame view.
+ *
+ * @globals xhr, t0, projectUrl, div_progress_bar, totalLines, pollTimer
+*/
+function startBlame(blamedataUrl, bUrl) {
+
+	xhr = createRequestObject();
+	if (!xhr) {
+		errorInfo('ERROR: XMLHttpRequest not supported');
+		return;
+	}
+
+	t0 = new Date();
+	projectUrl = bUrl + (bUrl.indexOf('?') === -1 ? '?' : ';');
+	if ((div_progress_bar = document.getElementById('progress_bar'))) {
+		//div_progress_bar.setAttribute('style', 'width: 100%;');
+		div_progress_bar.style.cssText = 'width: 100%;';
+	}
+	totalLines = countLines();
+	updateProgressInfo();
+
+	/* add extra properties to xhr object to help processing response */
+	xhr.prevDataLength = -1;  // used to detect if we have new data
+	xhr.nextReadPos = 0;      // where unread part of response starts
+
+	xhr.onreadystatechange = handleResponse;
+	//xhr.onreadystatechange = function () { handleResponse(xhr); };
+
+	xhr.open('GET', blamedataUrl);
+	xhr.setRequestHeader('Accept', 'text/plain');
+	xhr.send(null);
+
+	// not all browsers call onreadystatechange event on each server flush
+	// poll response using timer every second to handle this issue
+	pollTimer = setInterval(xhr.onreadystatechange, 1000);
+}
+
+// end of gitweb.js
diff --git a/files/html/index.cgi b/files/html/index.cgi
new file mode 100755
index 0000000..6bb51b6
--- /dev/null
+++ b/files/html/index.cgi
@@ -0,0 +1,7039 @@
+#!/usr/bin/perl
+
+# gitweb - simple web interface to track changes in git repositories
+#
+# (C) 2005-2006, Kay Sievers <kay.sievers@vrfy.org>
+# (C) 2005, Christian Gierke
+#
+# This program is licensed under the GPLv2
+
+use strict;
+use warnings;
+use CGI qw(:standard :escapeHTML -nosticky);
+use CGI::Util qw(unescape);
+use CGI::Carp qw(fatalsToBrowser set_message);
+use Encode;
+use Fcntl ':mode';
+use File::Find qw();
+use File::Basename qw(basename);
+binmode STDOUT, ':utf8';
+
+our $t0;
+if (eval { require Time::HiRes; 1; }) {
+	$t0 = [Time::HiRes::gettimeofday()];
+}
+our $number_of_git_cmds = 0;
+
+BEGIN {
+	CGI->compile() if $ENV{'MOD_PERL'};
+}
+
+our $version = "1.7.2.5";
+
+our ($my_url, $my_uri, $base_url, $path_info, $home_link);
+sub evaluate_uri {
+	our $cgi;
+
+	our $my_url = $cgi->url();
+	our $my_uri = $cgi->url(-absolute => 1);
+
+	# Base URL for relative URLs in gitweb ($logo, $favicon, ...),
+	# needed and used only for URLs with nonempty PATH_INFO
+	our $base_url = $my_url;
+
+	# When the script is used as DirectoryIndex, the URL does not contain the name
+	# of the script file itself, and $cgi->url() fails to strip PATH_INFO, so we
+	# have to do it ourselves. We make $path_info global because it's also used
+	# later on.
+	#
+	# Another issue with the script being the DirectoryIndex is that the resulting
+	# $my_url data is not the full script URL: this is good, because we want
+	# generated links to keep implying the script name if it wasn't explicitly
+	# indicated in the URL we're handling, but it means that $my_url cannot be used
+	# as base URL.
+	# Therefore, if we needed to strip PATH_INFO, then we know that we have
+	# to build the base URL ourselves:
+	our $path_info = $ENV{"PATH_INFO"};
+	if ($path_info) {
+		if ($my_url =~ s,\Q$path_info\E$,, &&
+		    $my_uri =~ s,\Q$path_info\E$,, &&
+		    defined $ENV{'SCRIPT_NAME'}) {
+			$base_url = $cgi->url(-base => 1) . $ENV{'SCRIPT_NAME'};
+		}
+	}
+
+	# target of the home link on top of all pages
+	our $home_link = $my_uri || "/";
+}
+
+# core git executable to use
+# this can just be "git" if your webserver has a sensible PATH
+our $GIT = "/usr/bin/git";
+
+# absolute fs-path which will be prepended to the project path
+#our $projectroot = "/pub/scm";
+our $projectroot = "/pub/git";
+
+# fs traversing limit for getting project list
+# the number is relative to the projectroot
+our $project_maxdepth = 2007;
+
+# string of the home link on top of all pages
+our $home_link_str = "projects";
+
+# name of your site or organization to appear in page titles
+# replace this with something more descriptive for clearer bookmarks
+our $site_name = ""
+                 || ($ENV{'SERVER_NAME'} || "Untitled") . " Git";
+
+# filename of html text to include at top of each page
+our $site_header = "";
+# html text to include at home page
+our $home_text = "indextext.html";
+# filename of html text to include at bottom of each page
+our $site_footer = "";
+
+# URI of stylesheets
+our @stylesheets = ("gitweb.css");
+# URI of a single stylesheet, which can be overridden in GITWEB_CONFIG.
+our $stylesheet = undef;
+# URI of GIT logo (72x27 size)
+our $logo = "git-logo.png";
+# URI of GIT favicon, assumed to be image/png type
+our $favicon = "git-favicon.png";
+# URI of gitweb.js (JavaScript code for gitweb)
+our $javascript = "gitweb.js";
+
+# URI and label (title) of GIT logo link
+#our $logo_url = "http://www.kernel.org/pub/software/scm/git/docs/";
+#our $logo_label = "git documentation";
+our $logo_url = "http://git-scm.com/";
+our $logo_label = "git homepage";
+
+# source of projects list
+our $projects_list = "";
+
+# the width (in characters) of the projects list "Description" column
+our $projects_list_description_width = 25;
+
+# default order of projects list
+# valid values are none, project, descr, owner, and age
+our $default_projects_order = "project";
+
+# show repository only if this file exists
+# (only effective if this variable evaluates to true)
+our $export_ok = "";
+
+# show repository only if this subroutine returns true
+# when given the path to the project, for example:
+#    sub { return -e "$_[0]/git-daemon-export-ok"; }
+our $export_auth_hook = undef;
+
+# only allow viewing of repositories also shown on the overview page
+our $strict_export = "";
+
+# list of git base URLs used for URL to where fetch project from,
+# i.e. full URL is "$git_base_url/$project"
+our @git_base_url_list = grep { $_ ne '' } ("");
+
+# default blob_plain mimetype and default charset for text/plain blob
+our $default_blob_plain_mimetype = 'text/plain';
+our $default_text_plain_charset  = undef;
+
+# file to use for guessing MIME types before trying /etc/mime.types
+# (relative to the current git repository)
+our $mimetypes_file = undef;
+
+# assume this charset if line contains non-UTF-8 characters;
+# it should be valid encoding (see Encoding::Supported(3pm) for list),
+# for which encoding all byte sequences are valid, for example
+# 'iso-8859-1' aka 'latin1' (it is decoded without checking, so it
+# could be even 'utf-8' for the old behavior)
+our $fallback_encoding = 'latin1';
+
+# rename detection options for git-diff and git-diff-tree
+# - default is '-M', with the cost proportional to
+#   (number of removed files) * (number of new files).
+# - more costly is '-C' (which implies '-M'), with the cost proportional to
+#   (number of changed files + number of removed files) * (number of new files)
+# - even more costly is '-C', '--find-copies-harder' with cost
+#   (number of files in the original tree) * (number of new files)
+# - one might want to include '-B' option, e.g. '-B', '-M'
+our @diff_opts = ('-M'); # taken from git_commit
+
+# Disables features that would allow repository owners to inject script into
+# the gitweb domain.
+our $prevent_xss = 0;
+
+# information about snapshot formats that gitweb is capable of serving
+our %known_snapshot_formats = (
+	# name => {
+	# 	'display' => display name,
+	# 	'type' => mime type,
+	# 	'suffix' => filename suffix,
+	# 	'format' => --format for git-archive,
+	# 	'compressor' => [compressor command and arguments]
+	# 	                (array reference, optional)
+	# 	'disabled' => boolean (optional)}
+	#
+	'tgz' => {
+		'display' => 'tar.gz',
+		'type' => 'application/x-gzip',
+		'suffix' => '.tar.gz',
+		'format' => 'tar',
+		'compressor' => ['gzip']},
+
+	'tbz2' => {
+		'display' => 'tar.bz2',
+		'type' => 'application/x-bzip2',
+		'suffix' => '.tar.bz2',
+		'format' => 'tar',
+		'compressor' => ['bzip2']},
+
+	'txz' => {
+		'display' => 'tar.xz',
+		'type' => 'application/x-xz',
+		'suffix' => '.tar.xz',
+		'format' => 'tar',
+		'compressor' => ['xz'],
+		'disabled' => 1},
+
+	'zip' => {
+		'display' => 'zip',
+		'type' => 'application/x-zip',
+		'suffix' => '.zip',
+		'format' => 'zip'},
+);
+
+# Aliases so we understand old gitweb.snapshot values in repository
+# configuration.
+our %known_snapshot_format_aliases = (
+	'gzip'  => 'tgz',
+	'bzip2' => 'tbz2',
+	'xz'    => 'txz',
+
+	# backward compatibility: legacy gitweb config support
+	'x-gzip' => undef, 'gz' => undef,
+	'x-bzip2' => undef, 'bz2' => undef,
+	'x-zip' => undef, '' => undef,
+);
+
+# Pixel sizes for icons and avatars. If the default font sizes or lineheights
+# are changed, it may be appropriate to change these values too via
+# $GITWEB_CONFIG.
+our %avatar_size = (
+	'default' => 16,
+	'double'  => 32
+);
+
+# Used to set the maximum load that we will still respond to gitweb queries.
+# If server load exceed this value then return "503 server busy" error.
+# If gitweb cannot determined server load, it is taken to be 0.
+# Leave it undefined (or set to 'undef') to turn off load checking.
+our $maxload = 300;
+
+# You define site-wide feature defaults here; override them with
+# $GITWEB_CONFIG as necessary.
+our %feature = (
+	# feature => {
+	# 	'sub' => feature-sub (subroutine),
+	# 	'override' => allow-override (boolean),
+	# 	'default' => [ default options...] (array reference)}
+	#
+	# if feature is overridable (it means that allow-override has true value),
+	# then feature-sub will be called with default options as parameters;
+	# return value of feature-sub indicates if to enable specified feature
+	#
+	# if there is no 'sub' key (no feature-sub), then feature cannot be
+	# overridden
+	#
+	# use gitweb_get_feature(<feature>) to retrieve the <feature> value
+	# (an array) or gitweb_check_feature(<feature>) to check if <feature>
+	# is enabled
+
+	# Enable the 'blame' blob view, showing the last commit that modified
+	# each line in the file. This can be very CPU-intensive.
+
+	# To enable system wide have in $GITWEB_CONFIG
+	# $feature{'blame'}{'default'} = [1];
+	# To have project specific config enable override in $GITWEB_CONFIG
+	# $feature{'blame'}{'override'} = 1;
+	# and in project config gitweb.blame = 0|1;
+	'blame' => {
+		'sub' => sub { feature_bool('blame', @_) },
+		'override' => 0,
+		'default' => [0]},
+
+	# Enable the 'snapshot' link, providing a compressed archive of any
+	# tree. This can potentially generate high traffic if you have large
+	# project.
+
+	# Value is a list of formats defined in %known_snapshot_formats that
+	# you wish to offer.
+	# To disable system wide have in $GITWEB_CONFIG
+	# $feature{'snapshot'}{'default'} = [];
+	# To have project specific config enable override in $GITWEB_CONFIG
+	# $feature{'snapshot'}{'override'} = 1;
+	# and in project config, a comma-separated list of formats or "none"
+	# to disable.  Example: gitweb.snapshot = tbz2,zip;
+	'snapshot' => {
+		'sub' => \&feature_snapshot,
+		'override' => 0,
+		'default' => ['tgz']},
+
+	# Enable text search, which will list the commits which match author,
+	# committer or commit text to a given string.  Enabled by default.
+	# Project specific override is not supported.
+	'search' => {
+		'override' => 0,
+		'default' => [1]},
+
+	# Enable grep search, which will list the files in currently selected
+	# tree containing the given string. Enabled by default. This can be
+	# potentially CPU-intensive, of course.
+
+	# To enable system wide have in $GITWEB_CONFIG
+	# $feature{'grep'}{'default'} = [1];
+	# To have project specific config enable override in $GITWEB_CONFIG
+	# $feature{'grep'}{'override'} = 1;
+	# and in project config gitweb.grep = 0|1;
+	'grep' => {
+		'sub' => sub { feature_bool('grep', @_) },
+		'override' => 0,
+		'default' => [1]},
+
+	# Enable the pickaxe search, which will list the commits that modified
+	# a given string in a file. This can be practical and quite faster
+	# alternative to 'blame', but still potentially CPU-intensive.
+
+	# To enable system wide have in $GITWEB_CONFIG
+	# $feature{'pickaxe'}{'default'} = [1];
+	# To have project specific config enable override in $GITWEB_CONFIG
+	# $feature{'pickaxe'}{'override'} = 1;
+	# and in project config gitweb.pickaxe = 0|1;
+	'pickaxe' => {
+		'sub' => sub { feature_bool('pickaxe', @_) },
+		'override' => 0,
+		'default' => [1]},
+
+	# Enable showing size of blobs in a 'tree' view, in a separate
+	# column, similar to what 'ls -l' does.  This cost a bit of IO.
+
+	# To disable system wide have in $GITWEB_CONFIG
+	# $feature{'show-sizes'}{'default'} = [0];
+	# To have project specific config enable override in $GITWEB_CONFIG
+	# $feature{'show-sizes'}{'override'} = 1;
+	# and in project config gitweb.showsizes = 0|1;
+	'show-sizes' => {
+		'sub' => sub { feature_bool('showsizes', @_) },
+		'override' => 0,
+		'default' => [1]},
+
+	# Make gitweb use an alternative format of the URLs which can be
+	# more readable and natural-looking: project name is embedded
+	# directly in the path and the query string contains other
+	# auxiliary information. All gitweb installations recognize
+	# URL in either format; this configures in which formats gitweb
+	# generates links.
+
+	# To enable system wide have in $GITWEB_CONFIG
+	# $feature{'pathinfo'}{'default'} = [1];
+	# Project specific override is not supported.
+
+	# Note that you will need to change the default location of CSS,
+	# favicon, logo and possibly other files to an absolute URL. Also,
+	# if gitweb.cgi serves as your indexfile, you will need to force
+	# $my_uri to contain the script name in your $GITWEB_CONFIG.
+	'pathinfo' => {
+		'override' => 0,
+		'default' => [0]},
+
+	# Make gitweb consider projects in project root subdirectories
+	# to be forks of existing projects. Given project $projname.git,
+	# projects matching $projname/*.git will not be shown in the main
+	# projects list, instead a '+' mark will be added to $projname
+	# there and a 'forks' view will be enabled for the project, listing
+	# all the forks. If project list is taken from a file, forks have
+	# to be listed after the main project.
+
+	# To enable system wide have in $GITWEB_CONFIG
+	# $feature{'forks'}{'default'} = [1];
+	# Project specific override is not supported.
+	'forks' => {
+		'override' => 0,
+		'default' => [0]},
+
+	# Insert custom links to the action bar of all project pages.
+	# This enables you mainly to link to third-party scripts integrating
+	# into gitweb; e.g. git-browser for graphical history representation
+	# or custom web-based repository administration interface.
+
+	# The 'default' value consists of a list of triplets in the form
+	# (label, link, position) where position is the label after which
+	# to insert the link and link is a format string where %n expands
+	# to the project name, %f to the project path within the filesystem,
+	# %h to the current hash (h gitweb parameter) and %b to the current
+	# hash base (hb gitweb parameter); %% expands to %.
+
+	# To enable system wide have in $GITWEB_CONFIG e.g.
+	# $feature{'actions'}{'default'} = [('graphiclog',
+	# 	'/git-browser/by-commit.html?r=%n', 'summary')];
+	# Project specific override is not supported.
+	'actions' => {
+		'override' => 0,
+		'default' => []},
+
+	# Allow gitweb scan project content tags described in ctags/
+	# of project repository, and display the popular Web 2.0-ish
+	# "tag cloud" near the project list. Note that this is something
+	# COMPLETELY different from the normal Git tags.
+
+	# gitweb by itself can show existing tags, but it does not handle
+	# tagging itself; you need an external application for that.
+	# For an example script, check Girocco's cgi/tagproj.cgi.
+	# You may want to install the HTML::TagCloud Perl module to get
+	# a pretty tag cloud instead of just a list of tags.
+
+	# To enable system wide have in $GITWEB_CONFIG
+	# $feature{'ctags'}{'default'} = ['path_to_tag_script'];
+	# Project specific override is not supported.
+	'ctags' => {
+		'override' => 0,
+		'default' => [0]},
+
+	# The maximum number of patches in a patchset generated in patch
+	# view. Set this to 0 or undef to disable patch view, or to a
+	# negative number to remove any limit.
+
+	# To disable system wide have in $GITWEB_CONFIG
+	# $feature{'patches'}{'default'} = [0];
+	# To have project specific config enable override in $GITWEB_CONFIG
+	# $feature{'patches'}{'override'} = 1;
+	# and in project config gitweb.patches = 0|n;
+	# where n is the maximum number of patches allowed in a patchset.
+	'patches' => {
+		'sub' => \&feature_patches,
+		'override' => 0,
+		'default' => [16]},
+
+	# Avatar support. When this feature is enabled, views such as
+	# shortlog or commit will display an avatar associated with
+	# the email of the committer(s) and/or author(s).
+
+	# Currently available providers are gravatar and picon.
+	# If an unknown provider is specified, the feature is disabled.
+
+	# Gravatar depends on Digest::MD5.
+	# Picon currently relies on the indiana.edu database.
+
+	# To enable system wide have in $GITWEB_CONFIG
+	# $feature{'avatar'}{'default'} = ['<provider>'];
+	# where <provider> is either gravatar or picon.
+	# To have project specific config enable override in $GITWEB_CONFIG
+	# $feature{'avatar'}{'override'} = 1;
+	# and in project config gitweb.avatar = <provider>;
+	'avatar' => {
+		'sub' => \&feature_avatar,
+		'override' => 0,
+		'default' => ['']},
+
+	# Enable displaying how much time and how many git commands
+	# it took to generate and display page.  Disabled by default.
+	# Project specific override is not supported.
+	'timed' => {
+		'override' => 0,
+		'default' => [0]},
+
+	# Enable turning some links into links to actions which require
+	# JavaScript to run (like 'blame_incremental').  Not enabled by
+	# default.  Project specific override is currently not supported.
+	'javascript-actions' => {
+		'override' => 0,
+		'default' => [0]},
+
+	# Syntax highlighting support. This is based on Daniel Svensson's
+	# and Sham Chukoury's work in gitweb-xmms2.git.
+	# It requires the 'highlight' program present in $PATH,
+	# and therefore is disabled by default.
+
+	# To enable system wide have in $GITWEB_CONFIG
+	# $feature{'highlight'}{'default'} = [1];
+
+	'highlight' => {
+		'sub' => sub { feature_bool('highlight', @_) },
+		'override' => 0,
+		'default' => [0]},
+);
+
+sub gitweb_get_feature {
+	my ($name) = @_;
+	return unless exists $feature{$name};
+	my ($sub, $override, @defaults) = (
+		$feature{$name}{'sub'},
+		$feature{$name}{'override'},
+		@{$feature{$name}{'default'}});
+	# project specific override is possible only if we have project
+	our $git_dir; # global variable, declared later
+	if (!$override || !defined $git_dir) {
+		return @defaults;
+	}
+	if (!defined $sub) {
+		warn "feature $name is not overridable";
+		return @defaults;
+	}
+	return $sub->(@defaults);
+}
+
+# A wrapper to check if a given feature is enabled.
+# With this, you can say
+#
+#   my $bool_feat = gitweb_check_feature('bool_feat');
+#   gitweb_check_feature('bool_feat') or somecode;
+#
+# instead of
+#
+#   my ($bool_feat) = gitweb_get_feature('bool_feat');
+#   (gitweb_get_feature('bool_feat'))[0] or somecode;
+#
+sub gitweb_check_feature {
+	return (gitweb_get_feature(@_))[0];
+}
+
+
+sub feature_bool {
+	my $key = shift;
+	my ($val) = git_get_project_config($key, '--bool');
+
+	if (!defined $val) {
+		return ($_[0]);
+	} elsif ($val eq 'true') {
+		return (1);
+	} elsif ($val eq 'false') {
+		return (0);
+	}
+}
+
+sub feature_snapshot {
+	my (@fmts) = @_;
+
+	my ($val) = git_get_project_config('snapshot');
+
+	if ($val) {
+		@fmts = ($val eq 'none' ? () : split /\s*[,\s]\s*/, $val);
+	}
+
+	return @fmts;
+}
+
+sub feature_patches {
+	my @val = (git_get_project_config('patches', '--int'));
+
+	if (@val) {
+		return @val;
+	}
+
+	return ($_[0]);
+}
+
+sub feature_avatar {
+	my @val = (git_get_project_config('avatar'));
+
+	return @val ? @val : @_;
+}
+
+# checking HEAD file with -e is fragile if the repository was
+# initialized long time ago (i.e. symlink HEAD) and was pack-ref'ed
+# and then pruned.
+sub check_head_link {
+	my ($dir) = @_;
+	my $headfile = "$dir/HEAD";
+	return ((-e $headfile) ||
+		(-l $headfile && readlink($headfile) =~ /^refs\/heads\//));
+}
+
+sub check_export_ok {
+	my ($dir) = @_;
+	return (check_head_link($dir) &&
+		(!$export_ok || -e "$dir/$export_ok") &&
+		(!$export_auth_hook || $export_auth_hook->($dir)));
+}
+
+# process alternate names for backward compatibility
+# filter out unsupported (unknown) snapshot formats
+sub filter_snapshot_fmts {
+	my @fmts = @_;
+
+	@fmts = map {
+		exists $known_snapshot_format_aliases{$_} ?
+		       $known_snapshot_format_aliases{$_} : $_} @fmts;
+	@fmts = grep {
+		exists $known_snapshot_formats{$_} &&
+		!$known_snapshot_formats{$_}{'disabled'}} @fmts;
+}
+
+our ($GITWEB_CONFIG, $GITWEB_CONFIG_SYSTEM);
+sub evaluate_gitweb_config {
+	our $GITWEB_CONFIG = $ENV{'GITWEB_CONFIG'} || "gitweb_config.perl";
+	our $GITWEB_CONFIG_SYSTEM = $ENV{'GITWEB_CONFIG_SYSTEM'} || "/etc/gitweb.conf";
+	# die if there are errors parsing config file
+	if (-e $GITWEB_CONFIG) {
+		do $GITWEB_CONFIG;
+		die $@ if $@;
+	} elsif (-e $GITWEB_CONFIG_SYSTEM) {
+		do $GITWEB_CONFIG_SYSTEM;
+		die $@ if $@;
+	}
+}
+
+# Get loadavg of system, to compare against $maxload.
+# Currently it requires '/proc/loadavg' present to get loadavg;
+# if it is not present it returns 0, which means no load checking.
+sub get_loadavg {
+	if( -e '/proc/loadavg' ){
+		open my $fd, '<', '/proc/loadavg'
+			or return 0;
+		my @load = split(/\s+/, scalar <$fd>);
+		close $fd;
+
+		# The first three columns measure CPU and IO utilization of the last one,
+		# five, and 10 minute periods.  The fourth column shows the number of
+		# currently running processes and the total number of processes in the m/n
+		# format.  The last column displays the last process ID used.
+		return $load[0] || 0;
+	}
+	# additional checks for load average should go here for things that don't export
+	# /proc/loadavg
+
+	return 0;
+}
+
+# version of the core git binary
+our $git_version;
+sub evaluate_git_version {
+	our $git_version = qx("$GIT" --version) =~ m/git version (.*)$/ ? $1 : "unknown";
+	$number_of_git_cmds++;
+}
+
+sub check_loadavg {
+	if (defined $maxload && get_loadavg() > $maxload) {
+		die_error(503, "The load average on the server is too high");
+	}
+}
+
+# ======================================================================
+# input validation and dispatch
+
+# input parameters can be collected from a variety of sources (presently, CGI
+# and PATH_INFO), so we define an %input_params hash that collects them all
+# together during validation: this allows subsequent uses (e.g. href()) to be
+# agnostic of the parameter origin
+
+our %input_params = ();
+
+# input parameters are stored with the long parameter name as key. This will
+# also be used in the href subroutine to convert parameters to their CGI
+# equivalent, and since the href() usage is the most frequent one, we store
+# the name -> CGI key mapping here, instead of the reverse.
+#
+# XXX: Warning: If you touch this, check the search form for updating,
+# too.
+
+our @cgi_param_mapping = (
+	project => "p",
+	action => "a",
+	file_name => "f",
+	file_parent => "fp",
+	hash => "h",
+	hash_parent => "hp",
+	hash_base => "hb",
+	hash_parent_base => "hpb",
+	page => "pg",
+	order => "o",
+	searchtext => "s",
+	searchtype => "st",
+	snapshot_format => "sf",
+	extra_options => "opt",
+	search_use_regexp => "sr",
+	# this must be last entry (for manipulation from JavaScript)
+	javascript => "js"
+);
+our %cgi_param_mapping = @cgi_param_mapping;
+
+# we will also need to know the possible actions, for validation
+our %actions = (
+	"blame" => \&git_blame,
+	"blame_incremental" => \&git_blame_incremental,
+	"blame_data" => \&git_blame_data,
+	"blobdiff" => \&git_blobdiff,
+	"blobdiff_plain" => \&git_blobdiff_plain,
+	"blob" => \&git_blob,
+	"blob_plain" => \&git_blob_plain,
+	"commitdiff" => \&git_commitdiff,
+	"commitdiff_plain" => \&git_commitdiff_plain,
+	"commit" => \&git_commit,
+	"forks" => \&git_forks,
+	"heads" => \&git_heads,
+	"history" => \&git_history,
+	"log" => \&git_log,
+	"patch" => \&git_patch,
+	"patches" => \&git_patches,
+	"rss" => \&git_rss,
+	"atom" => \&git_atom,
+	"search" => \&git_search,
+	"search_help" => \&git_search_help,
+	"shortlog" => \&git_shortlog,
+	"summary" => \&git_summary,
+	"tag" => \&git_tag,
+	"tags" => \&git_tags,
+	"tree" => \&git_tree,
+	"snapshot" => \&git_snapshot,
+	"object" => \&git_object,
+	# those below don't need $project
+	"opml" => \&git_opml,
+	"project_list" => \&git_project_list,
+	"project_index" => \&git_project_index,
+);
+
+# finally, we have the hash of allowed extra_options for the commands that
+# allow them
+our %allowed_options = (
+	"--no-merges" => [ qw(rss atom log shortlog history) ],
+);
+
+# fill %input_params with the CGI parameters. All values except for 'opt'
+# should be single values, but opt can be an array. We should probably
+# build an array of parameters that can be multi-valued, but since for the time
+# being it's only this one, we just single it out
+sub evaluate_query_params {
+	our $cgi;
+
+	while (my ($name, $symbol) = each %cgi_param_mapping) {
+		if ($symbol eq 'opt') {
+			$input_params{$name} = [ $cgi->param($symbol) ];
+		} else {
+			$input_params{$name} = $cgi->param($symbol);
+		}
+	}
+}
+
+# now read PATH_INFO and update the parameter list for missing parameters
+sub evaluate_path_info {
+	return if defined $input_params{'project'};
+	return if !$path_info;
+	$path_info =~ s,^/+,,;
+	return if !$path_info;
+
+	# find which part of PATH_INFO is project
+	my $project = $path_info;
+	$project =~ s,/+$,,;
+	while ($project && !check_head_link("$projectroot/$project")) {
+		$project =~ s,/*[^/]*$,,;
+	}
+	return unless $project;
+	$input_params{'project'} = $project;
+
+	# do not change any parameters if an action is given using the query string
+	return if $input_params{'action'};
+	$path_info =~ s,^\Q$project\E/*,,;
+
+	# next, check if we have an action
+	my $action = $path_info;
+	$action =~ s,/.*$,,;
+	if (exists $actions{$action}) {
+		$path_info =~ s,^$action/*,,;
+		$input_params{'action'} = $action;
+	}
+
+	# list of actions that want hash_base instead of hash, but can have no
+	# pathname (f) parameter
+	my @wants_base = (
+		'tree',
+		'history',
+	);
+
+	# we want to catch
+	# [$hash_parent_base[:$file_parent]..]$hash_parent[:$file_name]
+	my ($parentrefname, $parentpathname, $refname, $pathname) =
+		($path_info =~ /^(?:(.+?)(?::(.+))?\.\.)?(.+?)(?::(.+))?$/);
+
+	# first, analyze the 'current' part
+	if (defined $pathname) {
+		# we got "branch:filename" or "branch:dir/"
+		# we could use git_get_type(branch:pathname), but:
+		# - it needs $git_dir
+		# - it does a git() call
+		# - the convention of terminating directories with a slash
+		#   makes it superfluous
+		# - embedding the action in the PATH_INFO would make it even
+		#   more superfluous
+		$pathname =~ s,^/+,,;
+		if (!$pathname || substr($pathname, -1) eq "/") {
+			$input_params{'action'} ||= "tree";
+			$pathname =~ s,/$,,;
+		} else {
+			# the default action depends on whether we had parent info
+			# or not
+			if ($parentrefname) {
+				$input_params{'action'} ||= "blobdiff_plain";
+			} else {
+				$input_params{'action'} ||= "blob_plain";
+			}
+		}
+		$input_params{'hash_base'} ||= $refname;
+		$input_params{'file_name'} ||= $pathname;
+	} elsif (defined $refname) {
+		# we got "branch". In this case we have to choose if we have to
+		# set hash or hash_base.
+		#
+		# Most of the actions without a pathname only want hash to be
+		# set, except for the ones specified in @wants_base that want
+		# hash_base instead. It should also be noted that hand-crafted
+		# links having 'history' as an action and no pathname or hash
+		# set will fail, but that happens regardless of PATH_INFO.
+		$input_params{'action'} ||= "shortlog";
+		if (grep { $_ eq $input_params{'action'} } @wants_base) {
+			$input_params{'hash_base'} ||= $refname;
+		} else {
+			$input_params{'hash'} ||= $refname;
+		}
+	}
+
+	# next, handle the 'parent' part, if present
+	if (defined $parentrefname) {
+		# a missing pathspec defaults to the 'current' filename, allowing e.g.
+		# someproject/blobdiff/oldrev..newrev:/filename
+		if ($parentpathname) {
+			$parentpathname =~ s,^/+,,;
+			$parentpathname =~ s,/$,,;
+			$input_params{'file_parent'} ||= $parentpathname;
+		} else {
+			$input_params{'file_parent'} ||= $input_params{'file_name'};
+		}
+		# we assume that hash_parent_base is wanted if a path was specified,
+		# or if the action wants hash_base instead of hash
+		if (defined $input_params{'file_parent'} ||
+			grep { $_ eq $input_params{'action'} } @wants_base) {
+			$input_params{'hash_parent_base'} ||= $parentrefname;
+		} else {
+			$input_params{'hash_parent'} ||= $parentrefname;
+		}
+	}
+
+	# for the snapshot action, we allow URLs in the form
+	# $project/snapshot/$hash.ext
+	# where .ext determines the snapshot and gets removed from the
+	# passed $refname to provide the $hash.
+	#
+	# To be able to tell that $refname includes the format extension, we
+	# require the following two conditions to be satisfied:
+	# - the hash input parameter MUST have been set from the $refname part
+	#   of the URL (i.e. they must be equal)
+	# - the snapshot format MUST NOT have been defined already (e.g. from
+	#   CGI parameter sf)
+	# It's also useless to try any matching unless $refname has a dot,
+	# so we check for that too
+	if (defined $input_params{'action'} &&
+		$input_params{'action'} eq 'snapshot' &&
+		defined $refname && index($refname, '.') != -1 &&
+		$refname eq $input_params{'hash'} &&
+		!defined $input_params{'snapshot_format'}) {
+		# We loop over the known snapshot formats, checking for
+		# extensions. Allowed extensions are both the defined suffix
+		# (which includes the initial dot already) and the snapshot
+		# format key itself, with a prepended dot
+		while (my ($fmt, $opt) = each %known_snapshot_formats) {
+			my $hash = $refname;
+			unless ($hash =~ s/(\Q$opt->{'suffix'}\E|\Q.$fmt\E)$//) {
+				next;
+			}
+			my $sfx = $1;
+			# a valid suffix was found, so set the snapshot format
+			# and reset the hash parameter
+			$input_params{'snapshot_format'} = $fmt;
+			$input_params{'hash'} = $hash;
+			# we also set the format suffix to the one requested
+			# in the URL: this way a request for e.g. .tgz returns
+			# a .tgz instead of a .tar.gz
+			$known_snapshot_formats{$fmt}{'suffix'} = $sfx;
+			last;
+		}
+	}
+}
+
+our ($action, $project, $file_name, $file_parent, $hash, $hash_parent, $hash_base,
+     $hash_parent_base, @extra_options, $page, $searchtype, $search_use_regexp,
+     $searchtext, $search_regexp);
+sub evaluate_and_validate_params {
+	our $action = $input_params{'action'};
+	if (defined $action) {
+		if (!validate_action($action)) {
+			die_error(400, "Invalid action parameter");
+		}
+	}
+
+	# parameters which are pathnames
+	our $project = $input_params{'project'};
+	if (defined $project) {
+		if (!validate_project($project)) {
+			undef $project;
+			die_error(404, "No such project");
+		}
+	}
+
+	our $file_name = $input_params{'file_name'};
+	if (defined $file_name) {
+		if (!validate_pathname($file_name)) {
+			die_error(400, "Invalid file parameter");
+		}
+	}
+
+	our $file_parent = $input_params{'file_parent'};
+	if (defined $file_parent) {
+		if (!validate_pathname($file_parent)) {
+			die_error(400, "Invalid file parent parameter");
+		}
+	}
+
+	# parameters which are refnames
+	our $hash = $input_params{'hash'};
+	if (defined $hash) {
+		if (!validate_refname($hash)) {
+			die_error(400, "Invalid hash parameter");
+		}
+	}
+
+	our $hash_parent = $input_params{'hash_parent'};
+	if (defined $hash_parent) {
+		if (!validate_refname($hash_parent)) {
+			die_error(400, "Invalid hash parent parameter");
+		}
+	}
+
+	our $hash_base = $input_params{'hash_base'};
+	if (defined $hash_base) {
+		if (!validate_refname($hash_base)) {
+			die_error(400, "Invalid hash base parameter");
+		}
+	}
+
+	our @extra_options = @{$input_params{'extra_options'}};
+	# @extra_options is always defined, since it can only be (currently) set from
+	# CGI, and $cgi->param() returns the empty array in array context if the param
+	# is not set
+	foreach my $opt (@extra_options) {
+		if (not exists $allowed_options{$opt}) {
+			die_error(400, "Invalid option parameter");
+		}
+		if (not grep(/^$action$/, @{$allowed_options{$opt}})) {
+			die_error(400, "Invalid option parameter for this action");
+		}
+	}
+
+	our $hash_parent_base = $input_params{'hash_parent_base'};
+	if (defined $hash_parent_base) {
+		if (!validate_refname($hash_parent_base)) {
+			die_error(400, "Invalid hash parent base parameter");
+		}
+	}
+
+	# other parameters
+	our $page = $input_params{'page'};
+	if (defined $page) {
+		if ($page =~ m/[^0-9]/) {
+			die_error(400, "Invalid page parameter");
+		}
+	}
+
+	our $searchtype = $input_params{'searchtype'};
+	if (defined $searchtype) {
+		if ($searchtype =~ m/[^a-z]/) {
+			die_error(400, "Invalid searchtype parameter");
+		}
+	}
+
+	our $search_use_regexp = $input_params{'search_use_regexp'};
+
+	our $searchtext = $input_params{'searchtext'};
+	our $search_regexp;
+	if (defined $searchtext) {
+		if (length($searchtext) < 2) {
+			die_error(403, "At least two characters are required for search parameter");
+		}
+		$search_regexp = $search_use_regexp ? $searchtext : quotemeta $searchtext;
+	}
+}
+
+# path to the current git repository
+our $git_dir;
+sub evaluate_git_dir {
+	our $git_dir = "$projectroot/$project" if $project;
+}
+
+our (@snapshot_fmts, $git_avatar);
+sub configure_gitweb_features {
+	# list of supported snapshot formats
+	our @snapshot_fmts = gitweb_get_feature('snapshot');
+	@snapshot_fmts = filter_snapshot_fmts(@snapshot_fmts);
+
+	# check that the avatar feature is set to a known provider name,
+	# and for each provider check if the dependencies are satisfied.
+	# if the provider name is invalid or the dependencies are not met,
+	# reset $git_avatar to the empty string.
+	our ($git_avatar) = gitweb_get_feature('avatar');
+	if ($git_avatar eq 'gravatar') {
+		$git_avatar = '' unless (eval { require Digest::MD5; 1; });
+	} elsif ($git_avatar eq 'picon') {
+		# no dependencies
+	} else {
+		$git_avatar = '';
+	}
+}
+
+# custom error handler: 'die <message>' is Internal Server Error
+sub handle_errors_html {
+	my $msg = shift; # it is already HTML escaped
+
+	# to avoid infinite loop where error occurs in die_error,
+	# change handler to default handler, disabling handle_errors_html
+	set_message("Error occured when inside die_error:\n$msg");
+
+	# you cannot jump out of die_error when called as error handler;
+	# the subroutine set via CGI::Carp::set_message is called _after_
+	# HTTP headers are already written, so it cannot write them itself
+	die_error(undef, undef, $msg, -error_handler => 1, -no_http_header => 1);
+}
+set_message(\&handle_errors_html);
+
+# dispatch
+sub dispatch {
+	if (!defined $action) {
+		if (defined $hash) {
+			$action = git_get_type($hash);
+		} elsif (defined $hash_base && defined $file_name) {
+			$action = git_get_type("$hash_base:$file_name");
+		} elsif (defined $project) {
+			$action = 'summary';
+		} else {
+			$action = 'project_list';
+		}
+	}
+	if (!defined($actions{$action})) {
+		die_error(400, "Unknown action");
+	}
+	if ($action !~ m/^(?:opml|project_list|project_index)$/ &&
+	    !$project) {
+		die_error(400, "Project needed");
+	}
+	$actions{$action}->();
+}
+
+sub reset_timer {
+	our $t0 = [Time::HiRes::gettimeofday()]
+		if defined $t0;
+	our $number_of_git_cmds = 0;
+}
+
+sub run_request {
+	reset_timer();
+
+	evaluate_uri();
+	evaluate_gitweb_config();
+	check_loadavg();
+
+	# $projectroot and $projects_list might be set in gitweb config file
+	$projects_list ||= $projectroot;
+
+	evaluate_query_params();
+	evaluate_path_info();
+	evaluate_and_validate_params();
+	evaluate_git_dir();
+
+	configure_gitweb_features();
+
+	dispatch();
+}
+
+our $is_last_request = sub { 1 };
+our ($pre_dispatch_hook, $post_dispatch_hook, $pre_listen_hook);
+our $CGI = 'CGI';
+our $cgi;
+sub configure_as_fcgi {
+	require CGI::Fast;
+	our $CGI = 'CGI::Fast';
+
+	my $request_number = 0;
+	# let each child service 100 requests
+	our $is_last_request = sub { ++$request_number > 100 };
+}
+sub evaluate_argv {
+	my $script_name = $ENV{'SCRIPT_NAME'} || $ENV{'SCRIPT_FILENAME'} || __FILE__;
+	configure_as_fcgi()
+		if $script_name =~ /\.fcgi$/;
+
+	return unless (@ARGV);
+
+	require Getopt::Long;
+	Getopt::Long::GetOptions(
+		'fastcgi|fcgi|f' => \&configure_as_fcgi,
+		'nproc|n=i' => sub {
+			my ($arg, $val) = @_;
+			return unless eval { require FCGI::ProcManager; 1; };
+			my $proc_manager = FCGI::ProcManager->new({
+				n_processes => $val,
+			});
+			our $pre_listen_hook    = sub { $proc_manager->pm_manage()        };
+			our $pre_dispatch_hook  = sub { $proc_manager->pm_pre_dispatch()  };
+			our $post_dispatch_hook = sub { $proc_manager->pm_post_dispatch() };
+		},
+	);
+}
+
+sub run {
+	evaluate_argv();
+	evaluate_git_version();
+
+	$pre_listen_hook->()
+		if $pre_listen_hook;
+
+ REQUEST:
+	while ($cgi = $CGI->new()) {
+		$pre_dispatch_hook->()
+			if $pre_dispatch_hook;
+
+		run_request();
+
+		$pre_dispatch_hook->()
+			if $post_dispatch_hook;
+
+		last REQUEST if ($is_last_request->());
+	}
+
+ DONE_GITWEB:
+	1;
+}
+
+run();
+
+if (defined caller) {
+	# wrapped in a subroutine processing requests,
+	# e.g. mod_perl with ModPerl::Registry, or PSGI with Plack::App::WrapCGI
+	return;
+} else {
+	# pure CGI script, serving single request
+	exit;
+}
+
+## ======================================================================
+## action links
+
+# possible values of extra options
+# -full => 0|1      - use absolute/full URL ($my_uri/$my_url as base)
+# -replay => 1      - start from a current view (replay with modifications)
+# -path_info => 0|1 - don't use/use path_info URL (if possible)
+sub href {
+	my %params = @_;
+	# default is to use -absolute url() i.e. $my_uri
+	my $href = $params{-full} ? $my_url : $my_uri;
+
+	$params{'project'} = $project unless exists $params{'project'};
+
+	if ($params{-replay}) {
+		while (my ($name, $symbol) = each %cgi_param_mapping) {
+			if (!exists $params{$name}) {
+				$params{$name} = $input_params{$name};
+			}
+		}
+	}
+
+	my $use_pathinfo = gitweb_check_feature('pathinfo');
+	if (defined $params{'project'} &&
+	    (exists $params{-path_info} ? $params{-path_info} : $use_pathinfo)) {
+		# try to put as many parameters as possible in PATH_INFO:
+		#   - project name
+		#   - action
+		#   - hash_parent or hash_parent_base:/file_parent
+		#   - hash or hash_base:/filename
+		#   - the snapshot_format as an appropriate suffix
+
+		# When the script is the root DirectoryIndex for the domain,
+		# $href here would be something like http://gitweb.example.com/
+		# Thus, we strip any trailing / from $href, to spare us double
+		# slashes in the final URL
+		$href =~ s,/$,,;
+
+		# Then add the project name, if present
+		$href .= "/".esc_url($params{'project'});
+		delete $params{'project'};
+
+		# since we destructively absorb parameters, we keep this
+		# boolean that remembers if we're handling a snapshot
+		my $is_snapshot = $params{'action'} eq 'snapshot';
+
+		# Summary just uses the project path URL, any other action is
+		# added to the URL
+		if (defined $params{'action'}) {
+			$href .= "/".esc_url($params{'action'}) unless $params{'action'} eq 'summary';
+			delete $params{'action'};
+		}
+
+		# Next, we put hash_parent_base:/file_parent..hash_base:/file_name,
+		# stripping nonexistent or useless pieces
+		$href .= "/" if ($params{'hash_base'} || $params{'hash_parent_base'}
+			|| $params{'hash_parent'} || $params{'hash'});
+		if (defined $params{'hash_base'}) {
+			if (defined $params{'hash_parent_base'}) {
+				$href .= esc_url($params{'hash_parent_base'});
+				# skip the file_parent if it's the same as the file_name
+				if (defined $params{'file_parent'}) {
+					if (defined $params{'file_name'} && $params{'file_parent'} eq $params{'file_name'}) {
+						delete $params{'file_parent'};
+					} elsif ($params{'file_parent'} !~ /\.\./) {
+						$href .= ":/".esc_url($params{'file_parent'});
+						delete $params{'file_parent'};
+					}
+				}
+				$href .= "..";
+				delete $params{'hash_parent'};
+				delete $params{'hash_parent_base'};
+			} elsif (defined $params{'hash_parent'}) {
+				$href .= esc_url($params{'hash_parent'}). "..";
+				delete $params{'hash_parent'};
+			}
+
+			$href .= esc_url($params{'hash_base'});
+			if (defined $params{'file_name'} && $params{'file_name'} !~ /\.\./) {
+				$href .= ":/".esc_url($params{'file_name'});
+				delete $params{'file_name'};
+			}
+			delete $params{'hash'};
+			delete $params{'hash_base'};
+		} elsif (defined $params{'hash'}) {
+			$href .= esc_url($params{'hash'});
+			delete $params{'hash'};
+		}
+
+		# If the action was a snapshot, we can absorb the
+		# snapshot_format parameter too
+		if ($is_snapshot) {
+			my $fmt = $params{'snapshot_format'};
+			# snapshot_format should always be defined when href()
+			# is called, but just in case some code forgets, we
+			# fall back to the default
+			$fmt ||= $snapshot_fmts[0];
+			$href .= $known_snapshot_formats{$fmt}{'suffix'};
+			delete $params{'snapshot_format'};
+		}
+	}
+
+	# now encode the parameters explicitly
+	my @result = ();
+	for (my $i = 0; $i < @cgi_param_mapping; $i += 2) {
+		my ($name, $symbol) = ($cgi_param_mapping[$i], $cgi_param_mapping[$i+1]);
+		if (defined $params{$name}) {
+			if (ref($params{$name}) eq "ARRAY") {
+				foreach my $par (@{$params{$name}}) {
+					push @result, $symbol . "=" . esc_param($par);
+				}
+			} else {
+				push @result, $symbol . "=" . esc_param($params{$name});
+			}
+		}
+	}
+	$href .= "?" . join(';', @result) if scalar @result;
+
+	return $href;
+}
+
+
+## ======================================================================
+## validation, quoting/unquoting and escaping
+
+sub validate_action {
+	my $input = shift || return undef;
+	return undef unless exists $actions{$input};
+	return $input;
+}
+
+sub validate_project {
+	my $input = shift || return undef;
+	if (!validate_pathname($input) ||
+		!(-d "$projectroot/$input") ||
+		!check_export_ok("$projectroot/$input") ||
+		($strict_export && !project_in_list($input))) {
+		return undef;
+	} else {
+		return $input;
+	}
+}
+
+sub validate_pathname {
+	my $input = shift || return undef;
+
+	# no '.' or '..' as elements of path, i.e. no '.' nor '..'
+	# at the beginning, at the end, and between slashes.
+	# also this catches doubled slashes
+	if ($input =~ m!(^|/)(|\.|\.\.)(/|$)!) {
+		return undef;
+	}
+	# no null characters
+	if ($input =~ m!\0!) {
+		return undef;
+	}
+	return $input;
+}
+
+sub validate_refname {
+	my $input = shift || return undef;
+
+	# textual hashes are O.K.
+	if ($input =~ m/^[0-9a-fA-F]{40}$/) {
+		return $input;
+	}
+	# it must be correct pathname
+	$input = validate_pathname($input)
+		or return undef;
+	# restrictions on ref name according to git-check-ref-format
+	if ($input =~ m!(/\.|\.\.|[\000-\040\177 ~^:?*\[]|/$)!) {
+		return undef;
+	}
+	return $input;
+}
+
+# decode sequences of octets in utf8 into Perl's internal form,
+# which is utf-8 with utf8 flag set if needed.  gitweb writes out
+# in utf-8 thanks to "binmode STDOUT, ':utf8'" at beginning
+sub to_utf8 {
+	my $str = shift;
+	return undef unless defined $str;
+	if (utf8::valid($str)) {
+		utf8::decode($str);
+		return $str;
+	} else {
+		return decode($fallback_encoding, $str, Encode::FB_DEFAULT);
+	}
+}
+
+# quote unsafe chars, but keep the slash, even when it's not
+# correct, but quoted slashes look too horrible in bookmarks
+sub esc_param {
+	my $str = shift;
+	return undef unless defined $str;
+	$str =~ s/([^A-Za-z0-9\-_.~()\/:@ ]+)/CGI::escape($1)/eg;
+	$str =~ s/ /\+/g;
+	return $str;
+}
+
+# quote unsafe chars in whole URL, so some characters cannot be quoted
+sub esc_url {
+	my $str = shift;
+	return undef unless defined $str;
+	$str =~ s/([^A-Za-z0-9\-_.~();\/;?:@&= ]+)/CGI::escape($1)/eg;
+	$str =~ s/ /\+/g;
+	return $str;
+}
+
+# quote unsafe characters in HTML attributes
+sub esc_attr {
+
+	# for XHTML conformance escaping '"' to '&quot;' is not enough
+	return esc_html(@_);
+}
+
+# replace invalid utf8 character with SUBSTITUTION sequence
+sub esc_html {
+	my $str = shift;
+	my %opts = @_;
+
+	return undef unless defined $str;
+
+	$str = to_utf8($str);
+	$str = $cgi->escapeHTML($str);
+	if ($opts{'-nbsp'}) {
+		$str =~ s/ /&nbsp;/g;
+	}
+	$str =~ s|([[:cntrl:]])|(($1 ne "\t") ? quot_cec($1) : $1)|eg;
+	return $str;
+}
+
+# quote control characters and escape filename to HTML
+sub esc_path {
+	my $str = shift;
+	my %opts = @_;
+
+	return undef unless defined $str;
+
+	$str = to_utf8($str);
+	$str = $cgi->escapeHTML($str);
+	if ($opts{'-nbsp'}) {
+		$str =~ s/ /&nbsp;/g;
+	}
+	$str =~ s|([[:cntrl:]])|quot_cec($1)|eg;
+	return $str;
+}
+
+# Make control characters "printable", using character escape codes (CEC)
+sub quot_cec {
+	my $cntrl = shift;
+	my %opts = @_;
+	my %es = ( # character escape codes, aka escape sequences
+		"\t" => '\t',   # tab            (HT)
+		"\n" => '\n',   # line feed      (LF)
+		"\r" => '\r',   # carrige return (CR)
+		"\f" => '\f',   # form feed      (FF)
+		"\b" => '\b',   # backspace      (BS)
+		"\a" => '\a',   # alarm (bell)   (BEL)
+		"\e" => '\e',   # escape         (ESC)
+		"\013" => '\v', # vertical tab   (VT)
+		"\000" => '\0', # nul character  (NUL)
+	);
+	my $chr = ( (exists $es{$cntrl})
+		    ? $es{$cntrl}
+		    : sprintf('\%2x', ord($cntrl)) );
+	if ($opts{-nohtml}) {
+		return $chr;
+	} else {
+		return "<span class=\"cntrl\">$chr</span>";
+	}
+}
+
+# Alternatively use unicode control pictures codepoints,
+# Unicode "printable representation" (PR)
+sub quot_upr {
+	my $cntrl = shift;
+	my %opts = @_;
+
+	my $chr = sprintf('&#%04d;', 0x2400+ord($cntrl));
+	if ($opts{-nohtml}) {
+		return $chr;
+	} else {
+		return "<span class=\"cntrl\">$chr</span>";
+	}
+}
+
+# git may return quoted and escaped filenames
+sub unquote {
+	my $str = shift;
+
+	sub unq {
+		my $seq = shift;
+		my %es = ( # character escape codes, aka escape sequences
+			't' => "\t",   # tab            (HT, TAB)
+			'n' => "\n",   # newline        (NL)
+			'r' => "\r",   # return         (CR)
+			'f' => "\f",   # form feed      (FF)
+			'b' => "\b",   # backspace      (BS)
+			'a' => "\a",   # alarm (bell)   (BEL)
+			'e' => "\e",   # escape         (ESC)
+			'v' => "\013", # vertical tab   (VT)
+		);
+
+		if ($seq =~ m/^[0-7]{1,3}$/) {
+			# octal char sequence
+			return chr(oct($seq));
+		} elsif (exists $es{$seq}) {
+			# C escape sequence, aka character escape code
+			return $es{$seq};
+		}
+		# quoted ordinary character
+		return $seq;
+	}
+
+	if ($str =~ m/^"(.*)"$/) {
+		# needs unquoting
+		$str = $1;
+		$str =~ s/\\([^0-7]|[0-7]{1,3})/unq($1)/eg;
+	}
+	return $str;
+}
+
+# escape tabs (convert tabs to spaces)
+sub untabify {
+	my $line = shift;
+
+	while ((my $pos = index($line, "\t")) != -1) {
+		if (my $count = (8 - ($pos % 8))) {
+			my $spaces = ' ' x $count;
+			$line =~ s/\t/$spaces/;
+		}
+	}
+
+	return $line;
+}
+
+sub project_in_list {
+	my $project = shift;
+	my @list = git_get_projects_list();
+	return @list && scalar(grep { $_->{'path'} eq $project } @list);
+}
+
+## ----------------------------------------------------------------------
+## HTML aware string manipulation
+
+# Try to chop given string on a word boundary between position
+# $len and $len+$add_len. If there is no word boundary there,
+# chop at $len+$add_len. Do not chop if chopped part plus ellipsis
+# (marking chopped part) would be longer than given string.
+sub chop_str {
+	my $str = shift;
+	my $len = shift;
+	my $add_len = shift || 10;
+	my $where = shift || 'right'; # 'left' | 'center' | 'right'
+
+	# Make sure perl knows it is utf8 encoded so we don't
+	# cut in the middle of a utf8 multibyte char.
+	$str = to_utf8($str);
+
+	# allow only $len chars, but don't cut a word if it would fit in $add_len
+	# if it doesn't fit, cut it if it's still longer than the dots we would add
+	# remove chopped character entities entirely
+
+	# when chopping in the middle, distribute $len into left and right part
+	# return early if chopping wouldn't make string shorter
+	if ($where eq 'center') {
+		return $str if ($len + 5 >= length($str)); # filler is length 5
+		$len = int($len/2);
+	} else {
+		return $str if ($len + 4 >= length($str)); # filler is length 4
+	}
+
+	# regexps: ending and beginning with word part up to $add_len
+	my $endre = qr/.{$len}\w{0,$add_len}/;
+	my $begre = qr/\w{0,$add_len}.{$len}/;
+
+	if ($where eq 'left') {
+		$str =~ m/^(.*?)($begre)$/;
+		my ($lead, $body) = ($1, $2);
+		if (length($lead) > 4) {
+			$lead = " ...";
+		}
+		return "$lead$body";
+
+	} elsif ($where eq 'center') {
+		$str =~ m/^($endre)(.*)$/;
+		my ($left, $str)  = ($1, $2);
+		$str =~ m/^(.*?)($begre)$/;
+		my ($mid, $right) = ($1, $2);
+		if (length($mid) > 5) {
+			$mid = " ... ";
+		}
+		return "$left$mid$right";
+
+	} else {
+		$str =~ m/^($endre)(.*)$/;
+		my $body = $1;
+		my $tail = $2;
+		if (length($tail) > 4) {
+			$tail = "... ";
+		}
+		return "$body$tail";
+	}
+}
+
+# takes the same arguments as chop_str, but also wraps a <span> around the
+# result with a title attribute if it does get chopped. Additionally, the
+# string is HTML-escaped.
+sub chop_and_escape_str {
+	my ($str) = @_;
+
+	my $chopped = chop_str(@_);
+	if ($chopped eq $str) {
+		return esc_html($chopped);
+	} else {
+		$str =~ s/[[:cntrl:]]/?/g;
+		return $cgi->span({-title=>$str}, esc_html($chopped));
+	}
+}
+
+## ----------------------------------------------------------------------
+## functions returning short strings
+
+# CSS class for given age value (in seconds)
+sub age_class {
+	my $age = shift;
+
+	if (!defined $age) {
+		return "noage";
+	} elsif ($age < 60*60*2) {
+		return "age0";
+	} elsif ($age < 60*60*24*2) {
+		return "age1";
+	} else {
+		return "age2";
+	}
+}
+
+# convert age in seconds to "nn units ago" string
+sub age_string {
+	my $age = shift;
+	my $age_str;
+
+	if ($age > 60*60*24*365*2) {
+		$age_str = (int $age/60/60/24/365);
+		$age_str .= " years ago";
+	} elsif ($age > 60*60*24*(365/12)*2) {
+		$age_str = int $age/60/60/24/(365/12);
+		$age_str .= " months ago";
+	} elsif ($age > 60*60*24*7*2) {
+		$age_str = int $age/60/60/24/7;
+		$age_str .= " weeks ago";
+	} elsif ($age > 60*60*24*2) {
+		$age_str = int $age/60/60/24;
+		$age_str .= " days ago";
+	} elsif ($age > 60*60*2) {
+		$age_str = int $age/60/60;
+		$age_str .= " hours ago";
+	} elsif ($age > 60*2) {
+		$age_str = int $age/60;
+		$age_str .= " min ago";
+	} elsif ($age > 2) {
+		$age_str = int $age;
+		$age_str .= " sec ago";
+	} else {
+		$age_str .= " right now";
+	}
+	return $age_str;
+}
+
+use constant {
+	S_IFINVALID => 0030000,
+	S_IFGITLINK => 0160000,
+};
+
+# submodule/subproject, a commit object reference
+sub S_ISGITLINK {
+	my $mode = shift;
+
+	return (($mode & S_IFMT) == S_IFGITLINK)
+}
+
+# convert file mode in octal to symbolic file mode string
+sub mode_str {
+	my $mode = oct shift;
+
+	if (S_ISGITLINK($mode)) {
+		return 'm---------';
+	} elsif (S_ISDIR($mode & S_IFMT)) {
+		return 'drwxr-xr-x';
+	} elsif (S_ISLNK($mode)) {
+		return 'lrwxrwxrwx';
+	} elsif (S_ISREG($mode)) {
+		# git cares only about the executable bit
+		if ($mode & S_IXUSR) {
+			return '-rwxr-xr-x';
+		} else {
+			return '-rw-r--r--';
+		};
+	} else {
+		return '----------';
+	}
+}
+
+# convert file mode in octal to file type string
+sub file_type {
+	my $mode = shift;
+
+	if ($mode !~ m/^[0-7]+$/) {
+		return $mode;
+	} else {
+		$mode = oct $mode;
+	}
+
+	if (S_ISGITLINK($mode)) {
+		return "submodule";
+	} elsif (S_ISDIR($mode & S_IFMT)) {
+		return "directory";
+	} elsif (S_ISLNK($mode)) {
+		return "symlink";
+	} elsif (S_ISREG($mode)) {
+		return "file";
+	} else {
+		return "unknown";
+	}
+}
+
+# convert file mode in octal to file type description string
+sub file_type_long {
+	my $mode = shift;
+
+	if ($mode !~ m/^[0-7]+$/) {
+		return $mode;
+	} else {
+		$mode = oct $mode;
+	}
+
+	if (S_ISGITLINK($mode)) {
+		return "submodule";
+	} elsif (S_ISDIR($mode & S_IFMT)) {
+		return "directory";
+	} elsif (S_ISLNK($mode)) {
+		return "symlink";
+	} elsif (S_ISREG($mode)) {
+		if ($mode & S_IXUSR) {
+			return "executable";
+		} else {
+			return "file";
+		};
+	} else {
+		return "unknown";
+	}
+}
+
+
+## ----------------------------------------------------------------------
+## functions returning short HTML fragments, or transforming HTML fragments
+## which don't belong to other sections
+
+# format line of commit message.
+sub format_log_line_html {
+	my $line = shift;
+
+	$line = esc_html($line, -nbsp=>1);
+	$line =~ s{\b([0-9a-fA-F]{8,40})\b}{
+		$cgi->a({-href => href(action=>"object", hash=>$1),
+					-class => "text"}, $1);
+	}eg;
+
+	return $line;
+}
+
+# format marker of refs pointing to given object
+
+# the destination action is chosen based on object type and current context:
+# - for annotated tags, we choose the tag view unless it's the current view
+#   already, in which case we go to shortlog view
+# - for other refs, we keep the current view if we're in history, shortlog or
+#   log view, and select shortlog otherwise
+sub format_ref_marker {
+	my ($refs, $id) = @_;
+	my $markers = '';
+
+	if (defined $refs->{$id}) {
+		foreach my $ref (@{$refs->{$id}}) {
+			# this code exploits the fact that non-lightweight tags are the
+			# only indirect objects, and that they are the only objects for which
+			# we want to use tag instead of shortlog as action
+			my ($type, $name) = qw();
+			my $indirect = ($ref =~ s/\^\{\}$//);
+			# e.g. tags/v2.6.11 or heads/next
+			if ($ref =~ m!^(.*?)s?/(.*)$!) {
+				$type = $1;
+				$name = $2;
+			} else {
+				$type = "ref";
+				$name = $ref;
+			}
+
+			my $class = $type;
+			$class .= " indirect" if $indirect;
+
+			my $dest_action = "shortlog";
+
+			if ($indirect) {
+				$dest_action = "tag" unless $action eq "tag";
+			} elsif ($action =~ /^(history|(short)?log)$/) {
+				$dest_action = $action;
+			}
+
+			my $dest = "";
+			$dest .= "refs/" unless $ref =~ m!^refs/!;
+			$dest .= $ref;
+
+			my $link = $cgi->a({
+				-href => href(
+					action=>$dest_action,
+					hash=>$dest
+				)}, $name);
+
+			$markers .= " <span class=\"".esc_attr($class)."\" title=\"".esc_attr($ref)."\">" .
+				$link . "</span>";
+		}
+	}
+
+	if ($markers) {
+		return ' <span class="refs">'. $markers . '</span>';
+	} else {
+		return "";
+	}
+}
+
+# format, perhaps shortened and with markers, title line
+sub format_subject_html {
+	my ($long, $short, $href, $extra) = @_;
+	$extra = '' unless defined($extra);
+
+	if (length($short) < length($long)) {
+		$long =~ s/[[:cntrl:]]/?/g;
+		return $cgi->a({-href => $href, -class => "list subject",
+		                -title => to_utf8($long)},
+		       esc_html($short)) . $extra;
+	} else {
+		return $cgi->a({-href => $href, -class => "list subject"},
+		       esc_html($long)) . $extra;
+	}
+}
+
+# Rather than recomputing the url for an email multiple times, we cache it
+# after the first hit. This gives a visible benefit in views where the avatar
+# for the same email is used repeatedly (e.g. shortlog).
+# The cache is shared by all avatar engines (currently gravatar only), which
+# are free to use it as preferred. Since only one avatar engine is used for any
+# given page, there's no risk for cache conflicts.
+our %avatar_cache = ();
+
+# Compute the picon url for a given email, by using the picon search service over at
+# http://www.cs.indiana.edu/picons/search.html
+sub picon_url {
+	my $email = lc shift;
+	if (!$avatar_cache{$email}) {
+		my ($user, $domain) = split('@', $email);
+		$avatar_cache{$email} =
+			"http://www.cs.indiana.edu/cgi-pub/kinzler/piconsearch.cgi/" .
+			"$domain/$user/" .
+			"users+domains+unknown/up/single";
+	}
+	return $avatar_cache{$email};
+}
+
+# Compute the gravatar url for a given email, if it's not in the cache already.
+# Gravatar stores only the part of the URL before the size, since that's the
+# one computationally more expensive. This also allows reuse of the cache for
+# different sizes (for this particular engine).
+sub gravatar_url {
+	my $email = lc shift;
+	my $size = shift;
+	$avatar_cache{$email} ||=
+		"http://www.gravatar.com/avatar/" .
+			Digest::MD5::md5_hex($email) . "?s=";
+	return $avatar_cache{$email} . $size;
+}
+
+# Insert an avatar for the given $email at the given $size if the feature
+# is enabled.
+sub git_get_avatar {
+	my ($email, %opts) = @_;
+	my $pre_white  = ($opts{-pad_before} ? "&nbsp;" : "");
+	my $post_white = ($opts{-pad_after}  ? "&nbsp;" : "");
+	$opts{-size} ||= 'default';
+	my $size = $avatar_size{$opts{-size}} || $avatar_size{'default'};
+	my $url = "";
+	if ($git_avatar eq 'gravatar') {
+		$url = gravatar_url($email, $size);
+	} elsif ($git_avatar eq 'picon') {
+		$url = picon_url($email);
+	}
+	# Other providers can be added by extending the if chain, defining $url
+	# as needed. If no variant puts something in $url, we assume avatars
+	# are completely disabled/unavailable.
+	if ($url) {
+		return $pre_white .
+		       "<img width=\"$size\" " .
+		            "class=\"avatar\" " .
+		            "src=\"".esc_url($url)."\" " .
+			    "alt=\"\" " .
+		       "/>" . $post_white;
+	} else {
+		return "";
+	}
+}
+
+sub format_search_author {
+	my ($author, $searchtype, $displaytext) = @_;
+	my $have_search = gitweb_check_feature('search');
+
+	if ($have_search) {
+		my $performed = "";
+		if ($searchtype eq 'author') {
+			$performed = "authored";
+		} elsif ($searchtype eq 'committer') {
+			$performed = "committed";
+		}
+
+		return $cgi->a({-href => href(action=>"search", hash=>$hash,
+				searchtext=>$author,
+				searchtype=>$searchtype), class=>"list",
+				title=>"Search for commits $performed by $author"},
+				$displaytext);
+
+	} else {
+		return $displaytext;
+	}
+}
+
+# format the author name of the given commit with the given tag
+# the author name is chopped and escaped according to the other
+# optional parameters (see chop_str).
+sub format_author_html {
+	my $tag = shift;
+	my $co = shift;
+	my $author = chop_and_escape_str($co->{'author_name'}, @_);
+	return "<$tag class=\"author\">" .
+	       format_search_author($co->{'author_name'}, "author",
+		       git_get_avatar($co->{'author_email'}, -pad_after => 1) .
+		       $author) .
+	       "</$tag>";
+}
+
+# format git diff header line, i.e. "diff --(git|combined|cc) ..."
+sub format_git_diff_header_line {
+	my $line = shift;
+	my $diffinfo = shift;
+	my ($from, $to) = @_;
+
+	if ($diffinfo->{'nparents'}) {
+		# combined diff
+		$line =~ s!^(diff (.*?) )"?.*$!$1!;
+		if ($to->{'href'}) {
+			$line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
+			                 esc_path($to->{'file'}));
+		} else { # file was deleted (no href)
+			$line .= esc_path($to->{'file'});
+		}
+	} else {
+		# "ordinary" diff
+		$line =~ s!^(diff (.*?) )"?a/.*$!$1!;
+		if ($from->{'href'}) {
+			$line .= $cgi->a({-href => $from->{'href'}, -class => "path"},
+			                 'a/' . esc_path($from->{'file'}));
+		} else { # file was added (no href)
+			$line .= 'a/' . esc_path($from->{'file'});
+		}
+		$line .= ' ';
+		if ($to->{'href'}) {
+			$line .= $cgi->a({-href => $to->{'href'}, -class => "path"},
+			                 'b/' . esc_path($to->{'file'}));
+		} else { # file was deleted
+			$line .= 'b/' . esc_path($to->{'file'});
+		}
+	}
+
+	return "<div class=\"diff header\">$line</div>\n";
+}
+
+# format extended diff header line, before patch itself
+sub format_extended_diff_header_line {
+	my $line = shift;
+	my $diffinfo = shift;
+	my ($from, $to) = @_;
+
+	# match <path>
+	if ($line =~ s!^((copy|rename) from ).*$!$1! && $from->{'href'}) {
+		$line .= $cgi->a({-href=>$from->{'href'}, -class=>"path"},
+		                       esc_path($from->{'file'}));
+	}
+	if ($line =~ s!^((copy|rename) to ).*$!$1! && $to->{'href'}) {
+		$line .= $cgi->a({-href=>$to->{'href'}, -class=>"path"},
+		                 esc_path($to->{'file'}));
+	}
+	# match single <mode>
+	if ($line =~ m/\s(\d{6})$/) {
+		$line .= '<span class="info"> (' .
+		         file_type_long($1) .
+		         ')</span>';
+	}
+	# match <hash>
+	if ($line =~ m/^index [0-9a-fA-F]{40},[0-9a-fA-F]{40}/) {
+		# can match only for combined diff
+		$line = 'index ';
+		for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
+			if ($from->{'href'}[$i]) {
+				$line .= $cgi->a({-href=>$from->{'href'}[$i],
+				                  -class=>"hash"},
+				                 substr($diffinfo->{'from_id'}[$i],0,7));
+			} else {
+				$line .= '0' x 7;
+			}
+			# separator
+			$line .= ',' if ($i < $diffinfo->{'nparents'} - 1);
+		}
+		$line .= '..';
+		if ($to->{'href'}) {
+			$line .= $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
+			                 substr($diffinfo->{'to_id'},0,7));
+		} else {
+			$line .= '0' x 7;
+		}
+
+	} elsif ($line =~ m/^index [0-9a-fA-F]{40}..[0-9a-fA-F]{40}/) {
+		# can match only for ordinary diff
+		my ($from_link, $to_link);
+		if ($from->{'href'}) {
+			$from_link = $cgi->a({-href=>$from->{'href'}, -class=>"hash"},
+			                     substr($diffinfo->{'from_id'},0,7));
+		} else {
+			$from_link = '0' x 7;
+		}
+		if ($to->{'href'}) {
+			$to_link = $cgi->a({-href=>$to->{'href'}, -class=>"hash"},
+			                   substr($diffinfo->{'to_id'},0,7));
+		} else {
+			$to_link = '0' x 7;
+		}
+		my ($from_id, $to_id) = ($diffinfo->{'from_id'}, $diffinfo->{'to_id'});
+		$line =~ s!$from_id\.\.$to_id!$from_link..$to_link!;
+	}
+
+	return $line . "<br/>\n";
+}
+
+# format from-file/to-file diff header
+sub format_diff_from_to_header {
+	my ($from_line, $to_line, $diffinfo, $from, $to, @parents) = @_;
+	my $line;
+	my $result = '';
+
+	$line = $from_line;
+	#assert($line =~ m/^---/) if DEBUG;
+	# no extra formatting for "^--- /dev/null"
+	if (! $diffinfo->{'nparents'}) {
+		# ordinary (single parent) diff
+		if ($line =~ m!^--- "?a/!) {
+			if ($from->{'href'}) {
+				$line = '--- a/' .
+				        $cgi->a({-href=>$from->{'href'}, -class=>"path"},
+				                esc_path($from->{'file'}));
+			} else {
+				$line = '--- a/' .
+				        esc_path($from->{'file'});
+			}
+		}
+		$result .= qq!<div class="diff from_file">$line</div>\n!;
+
+	} else {
+		# combined diff (merge commit)
+		for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
+			if ($from->{'href'}[$i]) {
+				$line = '--- ' .
+				        $cgi->a({-href=>href(action=>"blobdiff",
+				                             hash_parent=>$diffinfo->{'from_id'}[$i],
+				                             hash_parent_base=>$parents[$i],
+				                             file_parent=>$from->{'file'}[$i],
+				                             hash=>$diffinfo->{'to_id'},
+				                             hash_base=>$hash,
+				                             file_name=>$to->{'file'}),
+				                 -class=>"path",
+				                 -title=>"diff" . ($i+1)},
+				                $i+1) .
+				        '/' .
+				        $cgi->a({-href=>$from->{'href'}[$i], -class=>"path"},
+				                esc_path($from->{'file'}[$i]));
+			} else {
+				$line = '--- /dev/null';
+			}
+			$result .= qq!<div class="diff from_file">$line</div>\n!;
+		}
+	}
+
+	$line = $to_line;
+	#assert($line =~ m/^\+\+\+/) if DEBUG;
+	# no extra formatting for "^+++ /dev/null"
+	if ($line =~ m!^\+\+\+ "?b/!) {
+		if ($to->{'href'}) {
+			$line = '+++ b/' .
+			        $cgi->a({-href=>$to->{'href'}, -class=>"path"},
+			                esc_path($to->{'file'}));
+		} else {
+			$line = '+++ b/' .
+			        esc_path($to->{'file'});
+		}
+	}
+	$result .= qq!<div class="diff to_file">$line</div>\n!;
+
+	return $result;
+}
+
+# create note for patch simplified by combined diff
+sub format_diff_cc_simplified {
+	my ($diffinfo, @parents) = @_;
+	my $result = '';
+
+	$result .= "<div class=\"diff header\">" .
+	           "diff --cc ";
+	if (!is_deleted($diffinfo)) {
+		$result .= $cgi->a({-href => href(action=>"blob",
+		                                  hash_base=>$hash,
+		                                  hash=>$diffinfo->{'to_id'},
+		                                  file_name=>$diffinfo->{'to_file'}),
+		                    -class => "path"},
+		                   esc_path($diffinfo->{'to_file'}));
+	} else {
+		$result .= esc_path($diffinfo->{'to_file'});
+	}
+	$result .= "</div>\n" . # class="diff header"
+	           "<div class=\"diff nodifferences\">" .
+	           "Simple merge" .
+	           "</div>\n"; # class="diff nodifferences"
+
+	return $result;
+}
+
+# format patch (diff) line (not to be used for diff headers)
+sub format_diff_line {
+	my $line = shift;
+	my ($from, $to) = @_;
+	my $diff_class = "";
+
+	chomp $line;
+
+	if ($from && $to && ref($from->{'href'}) eq "ARRAY") {
+		# combined diff
+		my $prefix = substr($line, 0, scalar @{$from->{'href'}});
+		if ($line =~ m/^\@{3}/) {
+			$diff_class = " chunk_header";
+		} elsif ($line =~ m/^\\/) {
+			$diff_class = " incomplete";
+		} elsif ($prefix =~ tr/+/+/) {
+			$diff_class = " add";
+		} elsif ($prefix =~ tr/-/-/) {
+			$diff_class = " rem";
+		}
+	} else {
+		# assume ordinary diff
+		my $char = substr($line, 0, 1);
+		if ($char eq '+') {
+			$diff_class = " add";
+		} elsif ($char eq '-') {
+			$diff_class = " rem";
+		} elsif ($char eq '@') {
+			$diff_class = " chunk_header";
+		} elsif ($char eq "\\") {
+			$diff_class = " incomplete";
+		}
+	}
+	$line = untabify($line);
+	if ($from && $to && $line =~ m/^\@{2} /) {
+		my ($from_text, $from_start, $from_lines, $to_text, $to_start, $to_lines, $section) =
+			$line =~ m/^\@{2} (-(\d+)(?:,(\d+))?) (\+(\d+)(?:,(\d+))?) \@{2}(.*)$/;
+
+		$from_lines = 0 unless defined $from_lines;
+		$to_lines   = 0 unless defined $to_lines;
+
+		if ($from->{'href'}) {
+			$from_text = $cgi->a({-href=>"$from->{'href'}#l$from_start",
+			                     -class=>"list"}, $from_text);
+		}
+		if ($to->{'href'}) {
+			$to_text   = $cgi->a({-href=>"$to->{'href'}#l$to_start",
+			                     -class=>"list"}, $to_text);
+		}
+		$line = "<span class=\"chunk_info\">@@ $from_text $to_text @@</span>" .
+		        "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
+		return "<div class=\"diff$diff_class\">$line</div>\n";
+	} elsif ($from && $to && $line =~ m/^\@{3}/) {
+		my ($prefix, $ranges, $section) = $line =~ m/^(\@+) (.*?) \@+(.*)$/;
+		my (@from_text, @from_start, @from_nlines, $to_text, $to_start, $to_nlines);
+
+		@from_text = split(' ', $ranges);
+		for (my $i = 0; $i < @from_text; ++$i) {
+			($from_start[$i], $from_nlines[$i]) =
+				(split(',', substr($from_text[$i], 1)), 0);
+		}
+
+		$to_text   = pop @from_text;
+		$to_start  = pop @from_start;
+		$to_nlines = pop @from_nlines;
+
+		$line = "<span class=\"chunk_info\">$prefix ";
+		for (my $i = 0; $i < @from_text; ++$i) {
+			if ($from->{'href'}[$i]) {
+				$line .= $cgi->a({-href=>"$from->{'href'}[$i]#l$from_start[$i]",
+				                  -class=>"list"}, $from_text[$i]);
+			} else {
+				$line .= $from_text[$i];
+			}
+			$line .= " ";
+		}
+		if ($to->{'href'}) {
+			$line .= $cgi->a({-href=>"$to->{'href'}#l$to_start",
+			                  -class=>"list"}, $to_text);
+		} else {
+			$line .= $to_text;
+		}
+		$line .= " $prefix</span>" .
+		         "<span class=\"section\">" . esc_html($section, -nbsp=>1) . "</span>";
+		return "<div class=\"diff$diff_class\">$line</div>\n";
+	}
+	return "<div class=\"diff$diff_class\">" . esc_html($line, -nbsp=>1) . "</div>\n";
+}
+
+# Generates undef or something like "_snapshot_" or "snapshot (_tbz2_ _zip_)",
+# linked.  Pass the hash of the tree/commit to snapshot.
+sub format_snapshot_links {
+	my ($hash) = @_;
+	my $num_fmts = @snapshot_fmts;
+	if ($num_fmts > 1) {
+		# A parenthesized list of links bearing format names.
+		# e.g. "snapshot (_tar.gz_ _zip_)"
+		return "snapshot (" . join(' ', map
+			$cgi->a({
+				-href => href(
+					action=>"snapshot",
+					hash=>$hash,
+					snapshot_format=>$_
+				)
+			}, $known_snapshot_formats{$_}{'display'})
+		, @snapshot_fmts) . ")";
+	} elsif ($num_fmts == 1) {
+		# A single "snapshot" link whose tooltip bears the format name.
+		# i.e. "_snapshot_"
+		my ($fmt) = @snapshot_fmts;
+		return
+			$cgi->a({
+				-href => href(
+					action=>"snapshot",
+					hash=>$hash,
+					snapshot_format=>$fmt
+				),
+				-title => "in format: $known_snapshot_formats{$fmt}{'display'}"
+			}, "snapshot");
+	} else { # $num_fmts == 0
+		return undef;
+	}
+}
+
+## ......................................................................
+## functions returning values to be passed, perhaps after some
+## transformation, to other functions; e.g. returning arguments to href()
+
+# returns hash to be passed to href to generate gitweb URL
+# in -title key it returns description of link
+sub get_feed_info {
+	my $format = shift || 'Atom';
+	my %res = (action => lc($format));
+
+	# feed links are possible only for project views
+	return unless (defined $project);
+	# some views should link to OPML, or to generic project feed,
+	# or don't have specific feed yet (so they should use generic)
+	return if ($action =~ /^(?:tags|heads|forks|tag|search)$/x);
+
+	my $branch;
+	# branches refs uses 'refs/heads/' prefix (fullname) to differentiate
+	# from tag links; this also makes possible to detect branch links
+	if ((defined $hash_base && $hash_base =~ m!^refs/heads/(.*)$!) ||
+	    (defined $hash      && $hash      =~ m!^refs/heads/(.*)$!)) {
+		$branch = $1;
+	}
+	# find log type for feed description (title)
+	my $type = 'log';
+	if (defined $file_name) {
+		$type  = "history of $file_name";
+		$type .= "/" if ($action eq 'tree');
+		$type .= " on '$branch'" if (defined $branch);
+	} else {
+		$type = "log of $branch" if (defined $branch);
+	}
+
+	$res{-title} = $type;
+	$res{'hash'} = (defined $branch ? "refs/heads/$branch" : undef);
+	$res{'file_name'} = $file_name;
+
+	return %res;
+}
+
+## ----------------------------------------------------------------------
+## git utility subroutines, invoking git commands
+
+# returns path to the core git executable and the --git-dir parameter as list
+sub git_cmd {
+	$number_of_git_cmds++;
+	return $GIT, '--git-dir='.$git_dir;
+}
+
+# quote the given arguments for passing them to the shell
+# quote_command("command", "arg 1", "arg with ' and ! characters")
+# => "'command' 'arg 1' 'arg with '\'' and '\!' characters'"
+# Try to avoid using this function wherever possible.
+sub quote_command {
+	return join(' ',
+		map { my $a = $_; $a =~ s/(['!])/'\\$1'/g; "'$a'" } @_ );
+}
+
+# get HEAD ref of given project as hash
+sub git_get_head_hash {
+	return git_get_full_hash(shift, 'HEAD');
+}
+
+sub git_get_full_hash {
+	return git_get_hash(@_);
+}
+
+sub git_get_short_hash {
+	return git_get_hash(@_, '--short=7');
+}
+
+sub git_get_hash {
+	my ($project, $hash, @options) = @_;
+	my $o_git_dir = $git_dir;
+	my $retval = undef;
+	$git_dir = "$projectroot/$project";
+	if (open my $fd, '-|', git_cmd(), 'rev-parse',
+	    '--verify', '-q', @options, $hash) {
+		$retval = <$fd>;
+		chomp $retval if defined $retval;
+		close $fd;
+	}
+	if (defined $o_git_dir) {
+		$git_dir = $o_git_dir;
+	}
+	return $retval;
+}
+
+# get type of given object
+sub git_get_type {
+	my $hash = shift;
+
+	open my $fd, "-|", git_cmd(), "cat-file", '-t', $hash or return;
+	my $type = <$fd>;
+	close $fd or return;
+	chomp $type;
+	return $type;
+}
+
+# repository configuration
+our $config_file = '';
+our %config;
+
+# store multiple values for single key as anonymous array reference
+# single values stored directly in the hash, not as [ <value> ]
+sub hash_set_multi {
+	my ($hash, $key, $value) = @_;
+
+	if (!exists $hash->{$key}) {
+		$hash->{$key} = $value;
+	} elsif (!ref $hash->{$key}) {
+		$hash->{$key} = [ $hash->{$key}, $value ];
+	} else {
+		push @{$hash->{$key}}, $value;
+	}
+}
+
+# return hash of git project configuration
+# optionally limited to some section, e.g. 'gitweb'
+sub git_parse_project_config {
+	my $section_regexp = shift;
+	my %config;
+
+	local $/ = "\0";
+
+	open my $fh, "-|", git_cmd(), "config", '-z', '-l',
+		or return;
+
+	while (my $keyval = <$fh>) {
+		chomp $keyval;
+		my ($key, $value) = split(/\n/, $keyval, 2);
+
+		hash_set_multi(\%config, $key, $value)
+			if (!defined $section_regexp || $key =~ /^(?:$section_regexp)\./o);
+	}
+	close $fh;
+
+	return %config;
+}
+
+# convert config value to boolean: 'true' or 'false'
+# no value, number > 0, 'true' and 'yes' values are true
+# rest of values are treated as false (never as error)
+sub config_to_bool {
+	my $val = shift;
+
+	return 1 if !defined $val;             # section.key
+
+	# strip leading and trailing whitespace
+	$val =~ s/^\s+//;
+	$val =~ s/\s+$//;
+
+	return (($val =~ /^\d+$/ && $val) ||   # section.key = 1
+	        ($val =~ /^(?:true|yes)$/i));  # section.key = true
+}
+
+# convert config value to simple decimal number
+# an optional value suffix of 'k', 'm', or 'g' will cause the value
+# to be multiplied by 1024, 1048576, or 1073741824
+sub config_to_int {
+	my $val = shift;
+
+	# strip leading and trailing whitespace
+	$val =~ s/^\s+//;
+	$val =~ s/\s+$//;
+
+	if (my ($num, $unit) = ($val =~ /^([0-9]*)([kmg])$/i)) {
+		$unit = lc($unit);
+		# unknown unit is treated as 1
+		return $num * ($unit eq 'g' ? 1073741824 :
+		               $unit eq 'm' ?    1048576 :
+		               $unit eq 'k' ?       1024 : 1);
+	}
+	return $val;
+}
+
+# convert config value to array reference, if needed
+sub config_to_multi {
+	my $val = shift;
+
+	return ref($val) ? $val : (defined($val) ? [ $val ] : []);
+}
+
+sub git_get_project_config {
+	my ($key, $type) = @_;
+
+	return unless defined $git_dir;
+
+	# key sanity check
+	return unless ($key);
+	$key =~ s/^gitweb\.//;
+	return if ($key =~ m/\W/);
+
+	# type sanity check
+	if (defined $type) {
+		$type =~ s/^--//;
+		$type = undef
+			unless ($type eq 'bool' || $type eq 'int');
+	}
+
+	# get config
+	if (!defined $config_file ||
+	    $config_file ne "$git_dir/config") {
+		%config = git_parse_project_config('gitweb');
+		$config_file = "$git_dir/config";
+	}
+
+	# check if config variable (key) exists
+	return unless exists $config{"gitweb.$key"};
+
+	# ensure given type
+	if (!defined $type) {
+		return $config{"gitweb.$key"};
+	} elsif ($type eq 'bool') {
+		# backward compatibility: 'git config --bool' returns true/false
+		return config_to_bool($config{"gitweb.$key"}) ? 'true' : 'false';
+	} elsif ($type eq 'int') {
+		return config_to_int($config{"gitweb.$key"});
+	}
+	return $config{"gitweb.$key"};
+}
+
+# get hash of given path at given ref
+sub git_get_hash_by_path {
+	my $base = shift;
+	my $path = shift || return undef;
+	my $type = shift;
+
+	$path =~ s,/+$,,;
+
+	open my $fd, "-|", git_cmd(), "ls-tree", $base, "--", $path
+		or die_error(500, "Open git-ls-tree failed");
+	my $line = <$fd>;
+	close $fd or return undef;
+
+	if (!defined $line) {
+		# there is no tree or hash given by $path at $base
+		return undef;
+	}
+
+	#'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa	panic.c'
+	$line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/;
+	if (defined $type && $type ne $2) {
+		# type doesn't match
+		return undef;
+	}
+	return $3;
+}
+
+# get path of entry with given hash at given tree-ish (ref)
+# used to get 'from' filename for combined diff (merge commit) for renames
+sub git_get_path_by_hash {
+	my $base = shift || return;
+	my $hash = shift || return;
+
+	local $/ = "\0";
+
+	open my $fd, "-|", git_cmd(), "ls-tree", '-r', '-t', '-z', $base
+		or return undef;
+	while (my $line = <$fd>) {
+		chomp $line;
+
+		#'040000 tree 595596a6a9117ddba9fe379b6b012b558bac8423	gitweb'
+		#'100644 blob e02e90f0429be0d2a69b76571101f20b8f75530f	gitweb/README'
+		if ($line =~ m/(?:[0-9]+) (?:.+) $hash\t(.+)$/) {
+			close $fd;
+			return $1;
+		}
+	}
+	close $fd;
+	return undef;
+}
+
+## ......................................................................
+## git utility functions, directly accessing git repository
+
+sub git_get_project_description {
+	my $path = shift;
+
+	$git_dir = "$projectroot/$path";
+	open my $fd, '<', "$git_dir/description"
+		or return git_get_project_config('description');
+	my $descr = <$fd>;
+	close $fd;
+	if (defined $descr) {
+		chomp $descr;
+	}
+	return $descr;
+}
+
+sub git_get_project_ctags {
+	my $path = shift;
+	my $ctags = {};
+
+	$git_dir = "$projectroot/$path";
+	opendir my $dh, "$git_dir/ctags"
+		or return $ctags;
+	foreach (grep { -f $_ } map { "$git_dir/ctags/$_" } readdir($dh)) {
+		open my $ct, '<', $_ or next;
+		my $val = <$ct>;
+		chomp $val;
+		close $ct;
+		my $ctag = $_; $ctag =~ s#.*/##;
+		$ctags->{$ctag} = $val;
+	}
+	closedir $dh;
+	$ctags;
+}
+
+sub git_populate_project_tagcloud {
+	my $ctags = shift;
+
+	# First, merge different-cased tags; tags vote on casing
+	my %ctags_lc;
+	foreach (keys %$ctags) {
+		$ctags_lc{lc $_}->{count} += $ctags->{$_};
+		if (not $ctags_lc{lc $_}->{topcount}
+		    or $ctags_lc{lc $_}->{topcount} < $ctags->{$_}) {
+			$ctags_lc{lc $_}->{topcount} = $ctags->{$_};
+			$ctags_lc{lc $_}->{topname} = $_;
+		}
+	}
+
+	my $cloud;
+	if (eval { require HTML::TagCloud; 1; }) {
+		$cloud = HTML::TagCloud->new;
+		foreach (sort keys %ctags_lc) {
+			# Pad the title with spaces so that the cloud looks
+			# less crammed.
+			my $title = $ctags_lc{$_}->{topname};
+			$title =~ s/ /&nbsp;/g;
+			$title =~ s/^/&nbsp;/g;
+			$title =~ s/$/&nbsp;/g;
+			$cloud->add($title, $home_link."?by_tag=".$_, $ctags_lc{$_}->{count});
+		}
+	} else {
+		$cloud = \%ctags_lc;
+	}
+	$cloud;
+}
+
+sub git_show_project_tagcloud {
+	my ($cloud, $count) = @_;
+	print STDERR ref($cloud)."..\n";
+	if (ref $cloud eq 'HTML::TagCloud') {
+		return $cloud->html_and_css($count);
+	} else {
+		my @tags = sort { $cloud->{$a}->{count} <=> $cloud->{$b}->{count} } keys %$cloud;
+		return '<p align="center">' . join (', ', map {
+			$cgi->a({-href=>"$home_link?by_tag=$_"}, $cloud->{$_}->{topname})
+		} splice(@tags, 0, $count)) . '</p>';
+	}
+}
+
+sub git_get_project_url_list {
+	my $path = shift;
+
+	$git_dir = "$projectroot/$path";
+	open my $fd, '<', "$git_dir/cloneurl"
+		or return wantarray ?
+		@{ config_to_multi(git_get_project_config('url')) } :
+		   config_to_multi(git_get_project_config('url'));
+	my @git_project_url_list = map { chomp; $_ } <$fd>;
+	close $fd;
+
+	return wantarray ? @git_project_url_list : \@git_project_url_list;
+}
+
+sub git_get_projects_list {
+	my ($filter) = @_;
+	my @list;
+
+	$filter ||= '';
+	$filter =~ s/\.git$//;
+
+	my $check_forks = gitweb_check_feature('forks');
+
+	if (-d $projects_list) {
+		# search in directory
+		my $dir = $projects_list . ($filter ? "/$filter" : '');
+		# remove the trailing "/"
+		$dir =~ s!/+$!!;
+		my $pfxlen = length("$dir");
+		my $pfxdepth = ($dir =~ tr!/!!);
+
+		File::Find::find({
+			follow_fast => 1, # follow symbolic links
+			follow_skip => 2, # ignore duplicates
+			dangling_symlinks => 0, # ignore dangling symlinks, silently
+			wanted => sub {
+				# global variables
+				our $project_maxdepth;
+				our $projectroot;
+				# skip project-list toplevel, if we get it.
+				return if (m!^[/.]$!);
+				# only directories can be git repositories
+				return unless (-d $_);
+				# don't traverse too deep (Find is super slow on os x)
+				if (($File::Find::name =~ tr!/!!) - $pfxdepth > $project_maxdepth) {
+					$File::Find::prune = 1;
+					return;
+				}
+
+				my $subdir = substr($File::Find::name, $pfxlen + 1);
+				# we check related file in $projectroot
+				my $path = ($filter ? "$filter/" : '') . $subdir;
+				if (check_export_ok("$projectroot/$path")) {
+					push @list, { path => $path };
+					$File::Find::prune = 1;
+				}
+			},
+		}, "$dir");
+
+	} elsif (-f $projects_list) {
+		# read from file(url-encoded):
+		# 'git%2Fgit.git Linus+Torvalds'
+		# 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
+		# 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
+		my %paths;
+		open my $fd, '<', $projects_list or return;
+	PROJECT:
+		while (my $line = <$fd>) {
+			chomp $line;
+			my ($path, $owner) = split ' ', $line;
+			$path = unescape($path);
+			$owner = unescape($owner);
+			if (!defined $path) {
+				next;
+			}
+			if ($filter ne '') {
+				# looking for forks;
+				my $pfx = substr($path, 0, length($filter));
+				if ($pfx ne $filter) {
+					next PROJECT;
+				}
+				my $sfx = substr($path, length($filter));
+				if ($sfx !~ /^\/.*\.git$/) {
+					next PROJECT;
+				}
+			} elsif ($check_forks) {
+			PATH:
+				foreach my $filter (keys %paths) {
+					# looking for forks;
+					my $pfx = substr($path, 0, length($filter));
+					if ($pfx ne $filter) {
+						next PATH;
+					}
+					my $sfx = substr($path, length($filter));
+					if ($sfx !~ /^\/.*\.git$/) {
+						next PATH;
+					}
+					# is a fork, don't include it in
+					# the list
+					next PROJECT;
+				}
+			}
+			if (check_export_ok("$projectroot/$path")) {
+				my $pr = {
+					path => $path,
+					owner => to_utf8($owner),
+				};
+				push @list, $pr;
+				(my $forks_path = $path) =~ s/\.git$//;
+				$paths{$forks_path}++;
+			}
+		}
+		close $fd;
+	}
+	return @list;
+}
+
+our $gitweb_project_owner = undef;
+sub git_get_project_list_from_file {
+
+	return if (defined $gitweb_project_owner);
+
+	$gitweb_project_owner = {};
+	# read from file (url-encoded):
+	# 'git%2Fgit.git Linus+Torvalds'
+	# 'libs%2Fklibc%2Fklibc.git H.+Peter+Anvin'
+	# 'linux%2Fhotplug%2Fudev.git Greg+Kroah-Hartman'
+	if (-f $projects_list) {
+		open(my $fd, '<', $projects_list);
+		while (my $line = <$fd>) {
+			chomp $line;
+			my ($pr, $ow) = split ' ', $line;
+			$pr = unescape($pr);
+			$ow = unescape($ow);
+			$gitweb_project_owner->{$pr} = to_utf8($ow);
+		}
+		close $fd;
+	}
+}
+
+sub git_get_project_owner {
+	my $project = shift;
+	my $owner;
+
+	return undef unless $project;
+	$git_dir = "$projectroot/$project";
+
+	if (!defined $gitweb_project_owner) {
+		git_get_project_list_from_file();
+	}
+
+	if (exists $gitweb_project_owner->{$project}) {
+		$owner = $gitweb_project_owner->{$project};
+	}
+	if (!defined $owner){
+		$owner = git_get_project_config('owner');
+	}
+	if (!defined $owner) {
+		$owner = get_file_owner("$git_dir");
+	}
+
+	return $owner;
+}
+
+sub git_get_last_activity {
+	my ($path) = @_;
+	my $fd;
+
+	$git_dir = "$projectroot/$path";
+	open($fd, "-|", git_cmd(), 'for-each-ref',
+	     '--format=%(committer)',
+	     '--sort=-committerdate',
+	     '--count=1',
+	     'refs/heads') or return;
+	my $most_recent = <$fd>;
+	close $fd or return;
+	if (defined $most_recent &&
+	    $most_recent =~ / (\d+) [-+][01]\d\d\d$/) {
+		my $timestamp = $1;
+		my $age = time - $timestamp;
+		return ($age, age_string($age));
+	}
+	return (undef, undef);
+}
+
+sub git_get_references {
+	my $type = shift || "";
+	my %refs;
+	# 5dc01c595e6c6ec9ccda4f6f69c131c0dd945f8c refs/tags/v2.6.11
+	# c39ae07f393806ccf406ef966e9a15afc43cc36a refs/tags/v2.6.11^{}
+	open my $fd, "-|", git_cmd(), "show-ref", "--dereference",
+		($type ? ("--", "refs/$type") : ()) # use -- <pattern> if $type
+		or return;
+
+	while (my $line = <$fd>) {
+		chomp $line;
+		if ($line =~ m!^([0-9a-fA-F]{40})\srefs/($type.*)$!) {
+			if (defined $refs{$1}) {
+				push @{$refs{$1}}, $2;
+			} else {
+				$refs{$1} = [ $2 ];
+			}
+		}
+	}
+	close $fd or return;
+	return \%refs;
+}
+
+sub git_get_rev_name_tags {
+	my $hash = shift || return undef;
+
+	open my $fd, "-|", git_cmd(), "name-rev", "--tags", $hash
+		or return;
+	my $name_rev = <$fd>;
+	close $fd;
+
+	if ($name_rev =~ m|^$hash tags/(.*)$|) {
+		return $1;
+	} else {
+		# catches also '$hash undefined' output
+		return undef;
+	}
+}
+
+## ----------------------------------------------------------------------
+## parse to hash functions
+
+sub parse_date {
+	my $epoch = shift;
+	my $tz = shift || "-0000";
+
+	my %date;
+	my @months = ("Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
+	my @days = ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
+	my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($epoch);
+	$date{'hour'} = $hour;
+	$date{'minute'} = $min;
+	$date{'mday'} = $mday;
+	$date{'day'} = $days[$wday];
+	$date{'month'} = $months[$mon];
+	$date{'rfc2822'}   = sprintf "%s, %d %s %4d %02d:%02d:%02d +0000",
+	                     $days[$wday], $mday, $months[$mon], 1900+$year, $hour ,$min, $sec;
+	$date{'mday-time'} = sprintf "%d %s %02d:%02d",
+	                     $mday, $months[$mon], $hour ,$min;
+	$date{'iso-8601'}  = sprintf "%04d-%02d-%02dT%02d:%02d:%02dZ",
+	                     1900+$year, 1+$mon, $mday, $hour ,$min, $sec;
+
+	$tz =~ m/^([+\-][0-9][0-9])([0-9][0-9])$/;
+	my $local = $epoch + ((int $1 + ($2/60)) * 3600);
+	($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($local);
+	$date{'hour_local'} = $hour;
+	$date{'minute_local'} = $min;
+	$date{'tz_local'} = $tz;
+	$date{'iso-tz'} = sprintf("%04d-%02d-%02d %02d:%02d:%02d %s",
+	                          1900+$year, $mon+1, $mday,
+	                          $hour, $min, $sec, $tz);
+	return %date;
+}
+
+sub parse_tag {
+	my $tag_id = shift;
+	my %tag;
+	my @comment;
+
+	open my $fd, "-|", git_cmd(), "cat-file", "tag", $tag_id or return;
+	$tag{'id'} = $tag_id;
+	while (my $line = <$fd>) {
+		chomp $line;
+		if ($line =~ m/^object ([0-9a-fA-F]{40})$/) {
+			$tag{'object'} = $1;
+		} elsif ($line =~ m/^type (.+)$/) {
+			$tag{'type'} = $1;
+		} elsif ($line =~ m/^tag (.+)$/) {
+			$tag{'name'} = $1;
+		} elsif ($line =~ m/^tagger (.*) ([0-9]+) (.*)$/) {
+			$tag{'author'} = $1;
+			$tag{'author_epoch'} = $2;
+			$tag{'author_tz'} = $3;
+			if ($tag{'author'} =~ m/^([^<]+) <([^>]*)>/) {
+				$tag{'author_name'}  = $1;
+				$tag{'author_email'} = $2;
+			} else {
+				$tag{'author_name'} = $tag{'author'};
+			}
+		} elsif ($line =~ m/--BEGIN/) {
+			push @comment, $line;
+			last;
+		} elsif ($line eq "") {
+			last;
+		}
+	}
+	push @comment, <$fd>;
+	$tag{'comment'} = \@comment;
+	close $fd or return;
+	if (!defined $tag{'name'}) {
+		return
+	};
+	return %tag
+}
+
+sub parse_commit_text {
+	my ($commit_text, $withparents) = @_;
+	my @commit_lines = split '\n', $commit_text;
+	my %co;
+
+	pop @commit_lines; # Remove '\0'
+
+	if (! @commit_lines) {
+		return;
+	}
+
+	my $header = shift @commit_lines;
+	if ($header !~ m/^[0-9a-fA-F]{40}/) {
+		return;
+	}
+	($co{'id'}, my @parents) = split ' ', $header;
+	while (my $line = shift @commit_lines) {
+		last if $line eq "\n";
+		if ($line =~ m/^tree ([0-9a-fA-F]{40})$/) {
+			$co{'tree'} = $1;
+		} elsif ((!defined $withparents) && ($line =~ m/^parent ([0-9a-fA-F]{40})$/)) {
+			push @parents, $1;
+		} elsif ($line =~ m/^author (.*) ([0-9]+) (.*)$/) {
+			$co{'author'} = to_utf8($1);
+			$co{'author_epoch'} = $2;
+			$co{'author_tz'} = $3;
+			if ($co{'author'} =~ m/^([^<]+) <([^>]*)>/) {
+				$co{'author_name'}  = $1;
+				$co{'author_email'} = $2;
+			} else {
+				$co{'author_name'} = $co{'author'};
+			}
+		} elsif ($line =~ m/^committer (.*) ([0-9]+) (.*)$/) {
+			$co{'committer'} = to_utf8($1);
+			$co{'committer_epoch'} = $2;
+			$co{'committer_tz'} = $3;
+			if ($co{'committer'} =~ m/^([^<]+) <([^>]*)>/) {
+				$co{'committer_name'}  = $1;
+				$co{'committer_email'} = $2;
+			} else {
+				$co{'committer_name'} = $co{'committer'};
+			}
+		}
+	}
+	if (!defined $co{'tree'}) {
+		return;
+	};
+	$co{'parents'} = \@parents;
+	$co{'parent'} = $parents[0];
+
+	foreach my $title (@commit_lines) {
+		$title =~ s/^    //;
+		if ($title ne "") {
+			$co{'title'} = chop_str($title, 80, 5);
+			# remove leading stuff of merges to make the interesting part visible
+			if (length($title) > 50) {
+				$title =~ s/^Automatic //;
+				$title =~ s/^merge (of|with) /Merge ... /i;
+				if (length($title) > 50) {
+					$title =~ s/(http|rsync):\/\///;
+				}
+				if (length($title) > 50) {
+					$title =~ s/(master|www|rsync)\.//;
+				}
+				if (length($title) > 50) {
+					$title =~ s/kernel.org:?//;
+				}
+				if (length($title) > 50) {
+					$title =~ s/\/pub\/scm//;
+				}
+			}
+			$co{'title_short'} = chop_str($title, 50, 5);
+			last;
+		}
+	}
+	if (! defined $co{'title'} || $co{'title'} eq "") {
+		$co{'title'} = $co{'title_short'} = '(no commit message)';
+	}
+	# remove added spaces
+	foreach my $line (@commit_lines) {
+		$line =~ s/^    //;
+	}
+	$co{'comment'} = \@commit_lines;
+
+	my $age = time - $co{'committer_epoch'};
+	$co{'age'} = $age;
+	$co{'age_string'} = age_string($age);
+	my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday) = gmtime($co{'committer_epoch'});
+	if ($age > 60*60*24*7*2) {
+		$co{'age_string_date'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
+		$co{'age_string_age'} = $co{'age_string'};
+	} else {
+		$co{'age_string_date'} = $co{'age_string'};
+		$co{'age_string_age'} = sprintf "%4i-%02u-%02i", 1900 + $year, $mon+1, $mday;
+	}
+	return %co;
+}
+
+sub parse_commit {
+	my ($commit_id) = @_;
+	my %co;
+
+	local $/ = "\0";
+
+	open my $fd, "-|", git_cmd(), "rev-list",
+		"--parents",
+		"--header",
+		"--max-count=1",
+		$commit_id,
+		"--",
+		or die_error(500, "Open git-rev-list failed");
+	%co = parse_commit_text(<$fd>, 1);
+	close $fd;
+
+	return %co;
+}
+
+sub parse_commits {
+	my ($commit_id, $maxcount, $skip, $filename, @args) = @_;
+	my @cos;
+
+	$maxcount ||= 1;
+	$skip ||= 0;
+
+	local $/ = "\0";
+
+	open my $fd, "-|", git_cmd(), "rev-list",
+		"--header",
+		@args,
+		("--max-count=" . $maxcount),
+		("--skip=" . $skip),
+		@extra_options,
+		$commit_id,
+		"--",
+		($filename ? ($filename) : ())
+		or die_error(500, "Open git-rev-list failed");
+	while (my $line = <$fd>) {
+		my %co = parse_commit_text($line);
+		push @cos, \%co;
+	}
+	close $fd;
+
+	return wantarray ? @cos : \@cos;
+}
+
+# parse line of git-diff-tree "raw" output
+sub parse_difftree_raw_line {
+	my $line = shift;
+	my %res;
+
+	# ':100644 100644 03b218260e99b78c6df0ed378e59ed9205ccc96d 3b93d5e7cc7f7dd4ebed13a5cc1a4ad976fc94d8 M	ls-files.c'
+	# ':100644 100644 7f9281985086971d3877aca27704f2aaf9c448ce bc190ebc71bbd923f2b728e505408f5e54bd073a M	rev-tree.c'
+	if ($line =~ m/^:([0-7]{6}) ([0-7]{6}) ([0-9a-fA-F]{40}) ([0-9a-fA-F]{40}) (.)([0-9]{0,3})\t(.*)$/) {
+		$res{'from_mode'} = $1;
+		$res{'to_mode'} = $2;
+		$res{'from_id'} = $3;
+		$res{'to_id'} = $4;
+		$res{'status'} = $5;
+		$res{'similarity'} = $6;
+		if ($res{'status'} eq 'R' || $res{'status'} eq 'C') { # renamed or copied
+			($res{'from_file'}, $res{'to_file'}) = map { unquote($_) } split("\t", $7);
+		} else {
+			$res{'from_file'} = $res{'to_file'} = $res{'file'} = unquote($7);
+		}
+	}
+	# '::100755 100755 100755 60e79ca1b01bc8b057abe17ddab484699a7f5fdb 94067cc5f73388f33722d52ae02f44692bc07490 94067cc5f73388f33722d52ae02f44692bc07490 MR	git-gui/git-gui.sh'
+	# combined diff (for merge commit)
+	elsif ($line =~ s/^(::+)((?:[0-7]{6} )+)((?:[0-9a-fA-F]{40} )+)([a-zA-Z]+)\t(.*)$//) {
+		$res{'nparents'}  = length($1);
+		$res{'from_mode'} = [ split(' ', $2) ];
+		$res{'to_mode'} = pop @{$res{'from_mode'}};
+		$res{'from_id'} = [ split(' ', $3) ];
+		$res{'to_id'} = pop @{$res{'from_id'}};
+		$res{'status'} = [ split('', $4) ];
+		$res{'to_file'} = unquote($5);
+	}
+	# 'c512b523472485aef4fff9e57b229d9d243c967f'
+	elsif ($line =~ m/^([0-9a-fA-F]{40})$/) {
+		$res{'commit'} = $1;
+	}
+
+	return wantarray ? %res : \%res;
+}
+
+# wrapper: return parsed line of git-diff-tree "raw" output
+# (the argument might be raw line, or parsed info)
+sub parsed_difftree_line {
+	my $line_or_ref = shift;
+
+	if (ref($line_or_ref) eq "HASH") {
+		# pre-parsed (or generated by hand)
+		return $line_or_ref;
+	} else {
+		return parse_difftree_raw_line($line_or_ref);
+	}
+}
+
+# parse line of git-ls-tree output
+sub parse_ls_tree_line {
+	my $line = shift;
+	my %opts = @_;
+	my %res;
+
+	if ($opts{'-l'}) {
+		#'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa   16717	panic.c'
+		$line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40}) +(-|[0-9]+)\t(.+)$/s;
+
+		$res{'mode'} = $1;
+		$res{'type'} = $2;
+		$res{'hash'} = $3;
+		$res{'size'} = $4;
+		if ($opts{'-z'}) {
+			$res{'name'} = $5;
+		} else {
+			$res{'name'} = unquote($5);
+		}
+	} else {
+		#'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa	panic.c'
+		$line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t(.+)$/s;
+
+		$res{'mode'} = $1;
+		$res{'type'} = $2;
+		$res{'hash'} = $3;
+		if ($opts{'-z'}) {
+			$res{'name'} = $4;
+		} else {
+			$res{'name'} = unquote($4);
+		}
+	}
+
+	return wantarray ? %res : \%res;
+}
+
+# generates _two_ hashes, references to which are passed as 2 and 3 argument
+sub parse_from_to_diffinfo {
+	my ($diffinfo, $from, $to, @parents) = @_;
+
+	if ($diffinfo->{'nparents'}) {
+		# combined diff
+		$from->{'file'} = [];
+		$from->{'href'} = [];
+		fill_from_file_info($diffinfo, @parents)
+			unless exists $diffinfo->{'from_file'};
+		for (my $i = 0; $i < $diffinfo->{'nparents'}; $i++) {
+			$from->{'file'}[$i] =
+				defined $diffinfo->{'from_file'}[$i] ?
+				        $diffinfo->{'from_file'}[$i] :
+				        $diffinfo->{'to_file'};
+			if ($diffinfo->{'status'}[$i] ne "A") { # not new (added) file
+				$from->{'href'}[$i] = href(action=>"blob",
+				                           hash_base=>$parents[$i],
+				                           hash=>$diffinfo->{'from_id'}[$i],
+				                           file_name=>$from->{'file'}[$i]);
+			} else {
+				$from->{'href'}[$i] = undef;
+			}
+		}
+	} else {
+		# ordinary (not combined) diff
+		$from->{'file'} = $diffinfo->{'from_file'};
+		if ($diffinfo->{'status'} ne "A") { # not new (added) file
+			$from->{'href'} = href(action=>"blob", hash_base=>$hash_parent,
+			                       hash=>$diffinfo->{'from_id'},
+			                       file_name=>$from->{'file'});
+		} else {
+			delete $from->{'href'};
+		}
+	}
+
+	$to->{'file'} = $diffinfo->{'to_file'};
+	if (!is_deleted($diffinfo)) { # file exists in result
+		$to->{'href'} = href(action=>"blob", hash_base=>$hash,
+		                     hash=>$diffinfo->{'to_id'},
+		                     file_name=>$to->{'file'});
+	} else {
+		delete $to->{'href'};
+	}
+}
+
+## ......................................................................
+## parse to array of hashes functions
+
+sub git_get_heads_list {
+	my $limit = shift;
+	my @headslist;
+
+	open my $fd, '-|', git_cmd(), 'for-each-ref',
+		($limit ? '--count='.($limit+1) : ()), '--sort=-committerdate',
+		'--format=%(objectname) %(refname) %(subject)%00%(committer)',
+		'refs/heads'
+		or return;
+	while (my $line = <$fd>) {
+		my %ref_item;
+
+		chomp $line;
+		my ($refinfo, $committerinfo) = split(/\0/, $line);
+		my ($hash, $name, $title) = split(' ', $refinfo, 3);
+		my ($committer, $epoch, $tz) =
+			($committerinfo =~ /^(.*) ([0-9]+) (.*)$/);
+		$ref_item{'fullname'}  = $name;
+		$name =~ s!^refs/heads/!!;
+
+		$ref_item{'name'}  = $name;
+		$ref_item{'id'}    = $hash;
+		$ref_item{'title'} = $title || '(no commit message)';
+		$ref_item{'epoch'} = $epoch;
+		if ($epoch) {
+			$ref_item{'age'} = age_string(time - $ref_item{'epoch'});
+		} else {
+			$ref_item{'age'} = "unknown";
+		}
+
+		push @headslist, \%ref_item;
+	}
+	close $fd;
+
+	return wantarray ? @headslist : \@headslist;
+}
+
+sub git_get_tags_list {
+	my $limit = shift;
+	my @tagslist;
+
+	open my $fd, '-|', git_cmd(), 'for-each-ref',
+		($limit ? '--count='.($limit+1) : ()), '--sort=-creatordate',
+		'--format=%(objectname) %(objecttype) %(refname) '.
+		'%(*objectname) %(*objecttype) %(subject)%00%(creator)',
+		'refs/tags'
+		or return;
+	while (my $line = <$fd>) {
+		my %ref_item;
+
+		chomp $line;
+		my ($refinfo, $creatorinfo) = split(/\0/, $line);
+		my ($id, $type, $name, $refid, $reftype, $title) = split(' ', $refinfo, 6);
+		my ($creator, $epoch, $tz) =
+			($creatorinfo =~ /^(.*) ([0-9]+) (.*)$/);
+		$ref_item{'fullname'} = $name;
+		$name =~ s!^refs/tags/!!;
+
+		$ref_item{'type'} = $type;
+		$ref_item{'id'} = $id;
+		$ref_item{'name'} = $name;
+		if ($type eq "tag") {
+			$ref_item{'subject'} = $title;
+			$ref_item{'reftype'} = $reftype;
+			$ref_item{'refid'}   = $refid;
+		} else {
+			$ref_item{'reftype'} = $type;
+			$ref_item{'refid'}   = $id;
+		}
+
+		if ($type eq "tag" || $type eq "commit") {
+			$ref_item{'epoch'} = $epoch;
+			if ($epoch) {
+				$ref_item{'age'} = age_string(time - $ref_item{'epoch'});
+			} else {
+				$ref_item{'age'} = "unknown";
+			}
+		}
+
+		push @tagslist, \%ref_item;
+	}
+	close $fd;
+
+	return wantarray ? @tagslist : \@tagslist;
+}
+
+## ----------------------------------------------------------------------
+## filesystem-related functions
+
+sub get_file_owner {
+	my $path = shift;
+
+	my ($dev, $ino, $mode, $nlink, $st_uid, $st_gid, $rdev, $size) = stat($path);
+	my ($name, $passwd, $uid, $gid, $quota, $comment, $gcos, $dir, $shell) = getpwuid($st_uid);
+	if (!defined $gcos) {
+		return undef;
+	}
+	my $owner = $gcos;
+	$owner =~ s/[,;].*$//;
+	return to_utf8($owner);
+}
+
+# assume that file exists
+sub insert_file {
+	my $filename = shift;
+
+	open my $fd, '<', $filename;
+	print map { to_utf8($_) } <$fd>;
+	close $fd;
+}
+
+## ......................................................................
+## mimetype related functions
+
+sub mimetype_guess_file {
+	my $filename = shift;
+	my $mimemap = shift;
+	-r $mimemap or return undef;
+
+	my %mimemap;
+	open(my $mh, '<', $mimemap) or return undef;
+	while (<$mh>) {
+		next if m/^#/; # skip comments
+		my ($mimetype, $exts) = split(/\t+/);
+		if (defined $exts) {
+			my @exts = split(/\s+/, $exts);
+			foreach my $ext (@exts) {
+				$mimemap{$ext} = $mimetype;
+			}
+		}
+	}
+	close($mh);
+
+	$filename =~ /\.([^.]*)$/;
+	return $mimemap{$1};
+}
+
+sub mimetype_guess {
+	my $filename = shift;
+	my $mime;
+	$filename =~ /\./ or return undef;
+
+	if ($mimetypes_file) {
+		my $file = $mimetypes_file;
+		if ($file !~ m!^/!) { # if it is relative path
+			# it is relative to project
+			$file = "$projectroot/$project/$file";
+		}
+		$mime = mimetype_guess_file($filename, $file);
+	}
+	$mime ||= mimetype_guess_file($filename, '/etc/mime.types');
+	return $mime;
+}
+
+sub blob_mimetype {
+	my $fd = shift;
+	my $filename = shift;
+
+	if ($filename) {
+		my $mime = mimetype_guess($filename);
+		$mime and return $mime;
+	}
+
+	# just in case
+	return $default_blob_plain_mimetype unless $fd;
+
+	if (-T $fd) {
+		return 'text/plain';
+	} elsif (! $filename) {
+		return 'application/octet-stream';
+	} elsif ($filename =~ m/\.png$/i) {
+		return 'image/png';
+	} elsif ($filename =~ m/\.gif$/i) {
+		return 'image/gif';
+	} elsif ($filename =~ m/\.jpe?g$/i) {
+		return 'image/jpeg';
+	} else {
+		return 'application/octet-stream';
+	}
+}
+
+sub blob_contenttype {
+	my ($fd, $file_name, $type) = @_;
+
+	$type ||= blob_mimetype($fd, $file_name);
+	if ($type eq 'text/plain' && defined $default_text_plain_charset) {
+		$type .= "; charset=$default_text_plain_charset";
+	}
+
+	return $type;
+}
+
+# guess file syntax for syntax highlighting; return undef if no highlighting
+# the name of syntax can (in the future) depend on syntax highlighter used
+sub guess_file_syntax {
+	my ($highlight, $mimetype, $file_name) = @_;
+	return undef unless ($highlight && defined $file_name);
+
+	# configuration for 'highlight' (http://www.andre-simon.de/)
+	# match by basename
+	my %highlight_basename = (
+		#'Program' => 'py',
+		#'Library' => 'py',
+		'SConstruct' => 'py', # SCons equivalent of Makefile
+		'Makefile' => 'make',
+	);
+	# match by extension
+	my %highlight_ext = (
+		# main extensions, defining name of syntax;
+		# see files in /usr/share/highlight/langDefs/ directory
+		map { $_ => $_ }
+			qw(py c cpp rb java css php sh pl js tex bib xml awk bat ini spec tcl),
+		# alternate extensions, see /etc/highlight/filetypes.conf
+		'h' => 'c',
+		map { $_ => 'cpp' } qw(cxx c++ cc),
+		map { $_ => 'php' } qw(php3 php4),
+		map { $_ => 'pl'  } qw(perl pm), # perhaps also 'cgi'
+		'mak' => 'make',
+		map { $_ => 'xml' } qw(xhtml html htm),
+	);
+
+	my $basename = basename($file_name, '.in');
+	return $highlight_basename{$basename}
+		if exists $highlight_basename{$basename};
+
+	$basename =~ /\.([^.]*)$/;
+	my $ext = $1 or return undef;
+	return $highlight_ext{$ext}
+		if exists $highlight_ext{$ext};
+
+	return undef;
+}
+
+# run highlighter and return FD of its output,
+# or return original FD if no highlighting
+sub run_highlighter {
+	my ($fd, $highlight, $syntax) = @_;
+	return $fd unless ($highlight && defined $syntax);
+
+	close $fd
+		or die_error(404, "Reading blob failed");
+	open $fd, quote_command(git_cmd(), "cat-file", "blob", $hash)." | ".
+	          "highlight --xhtml --fragment --syntax $syntax |"
+		or die_error(500, "Couldn't open file or run syntax highlighter");
+	return $fd;
+}
+
+## ======================================================================
+## functions printing HTML: header, footer, error page
+
+sub get_page_title {
+	my $title = to_utf8($site_name);
+
+	return $title unless (defined $project);
+	$title .= " - " . to_utf8($project);
+
+	return $title unless (defined $action);
+	$title .= "/$action"; # $action is US-ASCII (7bit ASCII)
+
+	return $title unless (defined $file_name);
+	$title .= " - " . esc_path($file_name);
+	if ($action eq "tree" && $file_name !~ m|/$|) {
+		$title .= "/";
+	}
+
+	return $title;
+}
+
+sub git_header_html {
+	my $status = shift || "200 OK";
+	my $expires = shift;
+	my %opts = @_;
+
+	my $title = get_page_title();
+	my $content_type;
+	# require explicit support from the UA if we are to send the page as
+	# 'application/xhtml+xml', otherwise send it as plain old 'text/html'.
+	# we have to do this because MSIE sometimes globs '*/*', pretending to
+	# support xhtml+xml but choking when it gets what it asked for.
+	if (defined $cgi->http('HTTP_ACCEPT') &&
+	    $cgi->http('HTTP_ACCEPT') =~ m/(,|;|\s|^)application\/xhtml\+xml(,|;|\s|$)/ &&
+	    $cgi->Accept('application/xhtml+xml') != 0) {
+		$content_type = 'application/xhtml+xml';
+	} else {
+		$content_type = 'text/html';
+	}
+	print $cgi->header(-type=>$content_type, -charset => 'utf-8',
+	                   -status=> $status, -expires => $expires)
+		unless ($opts{'-no_http_header'});
+	my $mod_perl_version = $ENV{'MOD_PERL'} ? " $ENV{'MOD_PERL'}" : '';
+	print <<EOF;
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-US" lang="en-US">
+<!-- git web interface version $version, (C) 2005-2006, Kay Sievers <kay.sievers\@vrfy.org>, Christian Gierke -->
+<!-- git core binaries version $git_version -->
+<head>
+<meta http-equiv="content-type" content="$content_type; charset=utf-8"/>
+<meta name="generator" content="gitweb/$version git/$git_version$mod_perl_version"/>
+<meta name="robots" content="index, nofollow"/>
+<title>$title</title>
+EOF
+	# the stylesheet, favicon etc urls won't work correctly with path_info
+	# unless we set the appropriate base URL
+	if ($ENV{'PATH_INFO'}) {
+		print "<base href=\"".esc_url($base_url)."\" />\n";
+	}
+	# print out each stylesheet that exist, providing backwards capability
+	# for those people who defined $stylesheet in a config file
+	if (defined $stylesheet) {
+		print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
+	} else {
+		foreach my $stylesheet (@stylesheets) {
+			next unless $stylesheet;
+			print '<link rel="stylesheet" type="text/css" href="'.esc_url($stylesheet).'"/>'."\n";
+		}
+	}
+	if (defined $project) {
+		my %href_params = get_feed_info();
+		if (!exists $href_params{'-title'}) {
+			$href_params{'-title'} = 'log';
+		}
+
+		foreach my $format qw(RSS Atom) {
+			my $type = lc($format);
+			my %link_attr = (
+				'-rel' => 'alternate',
+				'-title' => esc_attr("$project - $href_params{'-title'} - $format feed"),
+				'-type' => "application/$type+xml"
+			);
+
+			$href_params{'action'} = $type;
+			$link_attr{'-href'} = href(%href_params);
+			print "<link ".
+			      "rel=\"$link_attr{'-rel'}\" ".
+			      "title=\"$link_attr{'-title'}\" ".
+			      "href=\"$link_attr{'-href'}\" ".
+			      "type=\"$link_attr{'-type'}\" ".
+			      "/>\n";
+
+			$href_params{'extra_options'} = '--no-merges';
+			$link_attr{'-href'} = href(%href_params);
+			$link_attr{'-title'} .= ' (no merges)';
+			print "<link ".
+			      "rel=\"$link_attr{'-rel'}\" ".
+			      "title=\"$link_attr{'-title'}\" ".
+			      "href=\"$link_attr{'-href'}\" ".
+			      "type=\"$link_attr{'-type'}\" ".
+			      "/>\n";
+		}
+
+	} else {
+		printf('<link rel="alternate" title="%s projects list" '.
+		       'href="%s" type="text/plain; charset=utf-8" />'."\n",
+		       esc_attr($site_name), href(project=>undef, action=>"project_index"));
+		printf('<link rel="alternate" title="%s projects feeds" '.
+		       'href="%s" type="text/x-opml" />'."\n",
+		       esc_attr($site_name), href(project=>undef, action=>"opml"));
+	}
+	if (defined $favicon) {
+		print qq(<link rel="shortcut icon" href=").esc_url($favicon).qq(" type="image/png" />\n);
+	}
+
+	print "</head>\n" .
+	      "<body>\n";
+
+	if (defined $site_header && -f $site_header) {
+		insert_file($site_header);
+	}
+
+	print "<div class=\"page_header\">\n";
+	if (defined $logo) {
+		print $cgi->a({-href => esc_url($logo_url),
+		               -title => $logo_label},
+		              qq(<img src=").esc_url($logo).qq(" width="72" height="27" alt="git" class="logo"/>));
+	}
+	print $cgi->a({-href => esc_url($home_link)}, $home_link_str) . " / ";
+	if (defined $project) {
+		print $cgi->a({-href => href(action=>"summary")}, esc_html($project));
+		if (defined $action) {
+			print " / $action";
+		}
+		print "\n";
+	}
+	print "</div>\n";
+
+	my $have_search = gitweb_check_feature('search');
+	if (defined $project && $have_search) {
+		if (!defined $searchtext) {
+			$searchtext = "";
+		}
+		my $search_hash;
+		if (defined $hash_base) {
+			$search_hash = $hash_base;
+		} elsif (defined $hash) {
+			$search_hash = $hash;
+		} else {
+			$search_hash = "HEAD";
+		}
+		my $action = $my_uri;
+		my $use_pathinfo = gitweb_check_feature('pathinfo');
+		if ($use_pathinfo) {
+			$action .= "/".esc_url($project);
+		}
+		print $cgi->startform(-method => "get", -action => $action) .
+		      "<div class=\"search\">\n" .
+		      (!$use_pathinfo &&
+		      $cgi->input({-name=>"p", -value=>$project, -type=>"hidden"}) . "\n") .
+		      $cgi->input({-name=>"a", -value=>"search", -type=>"hidden"}) . "\n" .
+		      $cgi->input({-name=>"h", -value=>$search_hash, -type=>"hidden"}) . "\n" .
+		      $cgi->popup_menu(-name => 'st', -default => 'commit',
+		                       -values => ['commit', 'grep', 'author', 'committer', 'pickaxe']) .
+		      $cgi->sup($cgi->a({-href => href(action=>"search_help")}, "?")) .
+		      " search:\n",
+		      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
+		      "<span title=\"Extended regular expression\">" .
+		      $cgi->checkbox(-name => 'sr', -value => 1, -label => 're',
+		                     -checked => $search_use_regexp) .
+		      "</span>" .
+		      "</div>" .
+		      $cgi->end_form() . "\n";
+	}
+}
+
+sub git_footer_html {
+	my $feed_class = 'rss_logo';
+
+	print "<div class=\"page_footer\">\n";
+	if (defined $project) {
+		my $descr = git_get_project_description($project);
+		if (defined $descr) {
+			print "<div class=\"page_footer_text\">" . esc_html($descr) . "</div>\n";
+		}
+
+		my %href_params = get_feed_info();
+		if (!%href_params) {
+			$feed_class .= ' generic';
+		}
+		$href_params{'-title'} ||= 'log';
+
+		foreach my $format qw(RSS Atom) {
+			$href_params{'action'} = lc($format);
+			print $cgi->a({-href => href(%href_params),
+			              -title => "$href_params{'-title'} $format feed",
+			              -class => $feed_class}, $format)."\n";
+		}
+
+	} else {
+		print $cgi->a({-href => href(project=>undef, action=>"opml"),
+		              -class => $feed_class}, "OPML") . " ";
+		print $cgi->a({-href => href(project=>undef, action=>"project_index"),
+		              -class => $feed_class}, "TXT") . "\n";
+	}
+	print "</div>\n"; # class="page_footer"
+
+	if (defined $t0 && gitweb_check_feature('timed')) {
+		print "<div id=\"generating_info\">\n";
+		print 'This page took '.
+		      '<span id="generating_time" class="time_span">'.
+		      Time::HiRes::tv_interval($t0, [Time::HiRes::gettimeofday()]).
+		      ' seconds </span>'.
+		      ' and '.
+		      '<span id="generating_cmd">'.
+		      $number_of_git_cmds.
+		      '</span> git commands '.
+		      " to generate.\n";
+		print "</div>\n"; # class="page_footer"
+	}
+
+	if (defined $site_footer && -f $site_footer) {
+		insert_file($site_footer);
+	}
+
+	print qq!<script type="text/javascript" src="!.esc_url($javascript).qq!"></script>\n!;
+	if (defined $action &&
+	    $action eq 'blame_incremental') {
+		print qq!<script type="text/javascript">\n!.
+		      qq!startBlame("!. href(action=>"blame_data", -replay=>1) .qq!",\n!.
+		      qq!           "!. href() .qq!");\n!.
+		      qq!</script>\n!;
+	} elsif (gitweb_check_feature('javascript-actions')) {
+		print qq!<script type="text/javascript">\n!.
+		      qq!window.onload = fixLinks;\n!.
+		      qq!</script>\n!;
+	}
+
+	print "</body>\n" .
+	      "</html>";
+}
+
+# die_error(<http_status_code>, <error_message>[, <detailed_html_description>])
+# Example: die_error(404, 'Hash not found')
+# By convention, use the following status codes (as defined in RFC 2616):
+# 400: Invalid or missing CGI parameters, or
+#      requested object exists but has wrong type.
+# 403: Requested feature (like "pickaxe" or "snapshot") not enabled on
+#      this server or project.
+# 404: Requested object/revision/project doesn't exist.
+# 500: The server isn't configured properly, or
+#      an internal error occurred (e.g. failed assertions caused by bugs), or
+#      an unknown error occurred (e.g. the git binary died unexpectedly).
+# 503: The server is currently unavailable (because it is overloaded,
+#      or down for maintenance).  Generally, this is a temporary state.
+sub die_error {
+	my $status = shift || 500;
+	my $error = esc_html(shift) || "Internal Server Error";
+	my $extra = shift;
+	my %opts = @_;
+
+	my %http_responses = (
+		400 => '400 Bad Request',
+		403 => '403 Forbidden',
+		404 => '404 Not Found',
+		500 => '500 Internal Server Error',
+		503 => '503 Service Unavailable',
+	);
+	git_header_html($http_responses{$status}, undef, %opts);
+	print <<EOF;
+<div class="page_body">
+<br /><br />
+$status - $error
+<br />
+EOF
+	if (defined $extra) {
+		print "<hr />\n" .
+		      "$extra\n";
+	}
+	print "</div>\n";
+
+	git_footer_html();
+	goto DONE_GITWEB
+		unless ($opts{'-error_handler'});
+}
+
+## ----------------------------------------------------------------------
+## functions printing or outputting HTML: navigation
+
+sub git_print_page_nav {
+	my ($current, $suppress, $head, $treehead, $treebase, $extra) = @_;
+	$extra = '' if !defined $extra; # pager or formats
+
+	my @navs = qw(summary shortlog log commit commitdiff tree);
+	if ($suppress) {
+		@navs = grep { $_ ne $suppress } @navs;
+	}
+
+	my %arg = map { $_ => {action=>$_} } @navs;
+	if (defined $head) {
+		for (qw(commit commitdiff)) {
+			$arg{$_}{'hash'} = $head;
+		}
+		if ($current =~ m/^(tree | log | shortlog | commit | commitdiff | search)$/x) {
+			for (qw(shortlog log)) {
+				$arg{$_}{'hash'} = $head;
+			}
+		}
+	}
+
+	$arg{'tree'}{'hash'} = $treehead if defined $treehead;
+	$arg{'tree'}{'hash_base'} = $treebase if defined $treebase;
+
+	my @actions = gitweb_get_feature('actions');
+	my %repl = (
+		'%' => '%',
+		'n' => $project,         # project name
+		'f' => $git_dir,         # project path within filesystem
+		'h' => $treehead || '',  # current hash ('h' parameter)
+		'b' => $treebase || '',  # hash base ('hb' parameter)
+	);
+	while (@actions) {
+		my ($label, $link, $pos) = splice(@actions,0,3);
+		# insert
+		@navs = map { $_ eq $pos ? ($_, $label) : $_ } @navs;
+		# munch munch
+		$link =~ s/%([%nfhb])/$repl{$1}/g;
+		$arg{$label}{'_href'} = $link;
+	}
+
+	print "<div class=\"page_nav\">\n" .
+		(join " | ",
+		 map { $_ eq $current ?
+		       $_ : $cgi->a({-href => ($arg{$_}{_href} ? $arg{$_}{_href} : href(%{$arg{$_}}))}, "$_")
+		 } @navs);
+	print "<br/>\n$extra<br/>\n" .
+	      "</div>\n";
+}
+
+sub format_paging_nav {
+	my ($action, $page, $has_next_link) = @_;
+	my $paging_nav;
+
+
+	if ($page > 0) {
+		$paging_nav .=
+			$cgi->a({-href => href(-replay=>1, page=>undef)}, "first") .
+			" &sdot; " .
+			$cgi->a({-href => href(-replay=>1, page=>$page-1),
+			         -accesskey => "p", -title => "Alt-p"}, "prev");
+	} else {
+		$paging_nav .= "first &sdot; prev";
+	}
+
+	if ($has_next_link) {
+		$paging_nav .= " &sdot; " .
+			$cgi->a({-href => href(-replay=>1, page=>$page+1),
+			         -accesskey => "n", -title => "Alt-n"}, "next");
+	} else {
+		$paging_nav .= " &sdot; next";
+	}
+
+	return $paging_nav;
+}
+
+## ......................................................................
+## functions printing or outputting HTML: div
+
+sub git_print_header_div {
+	my ($action, $title, $hash, $hash_base) = @_;
+	my %args = ();
+
+	$args{'action'} = $action;
+	$args{'hash'} = $hash if $hash;
+	$args{'hash_base'} = $hash_base if $hash_base;
+
+	print "<div class=\"header\">\n" .
+	      $cgi->a({-href => href(%args), -class => "title"},
+	      $title ? $title : $action) .
+	      "\n</div>\n";
+}
+
+sub print_local_time {
+	print format_local_time(@_);
+}
+
+sub format_local_time {
+	my $localtime = '';
+	my %date = @_;
+	if ($date{'hour_local'} < 6) {
+		$localtime .= sprintf(" (<span class=\"atnight\">%02d:%02d</span> %s)",
+			$date{'hour_local'}, $date{'minute_local'}, $date{'tz_local'});
+	} else {
+		$localtime .= sprintf(" (%02d:%02d %s)",
+			$date{'hour_local'}, $date{'minute_local'}, $date{'tz_local'});
+	}
+
+	return $localtime;
+}
+
+# Outputs the author name and date in long form
+sub git_print_authorship {
+	my $co = shift;
+	my %opts = @_;
+	my $tag = $opts{-tag} || 'div';
+	my $author = $co->{'author_name'};
+
+	my %ad = parse_date($co->{'author_epoch'}, $co->{'author_tz'});
+	print "<$tag class=\"author_date\">" .
+	      format_search_author($author, "author", esc_html($author)) .
+	      " [$ad{'rfc2822'}";
+	print_local_time(%ad) if ($opts{-localtime});
+	print "]" . git_get_avatar($co->{'author_email'}, -pad_before => 1)
+		  . "</$tag>\n";
+}
+
+# Outputs table rows containing the full author or committer information,
+# in the format expected for 'commit' view (& similar).
+# Parameters are a commit hash reference, followed by the list of people
+# to output information for. If the list is empty it defaults to both
+# author and committer.
+sub git_print_authorship_rows {
+	my $co = shift;
+	# too bad we can't use @people = @_ || ('author', 'committer')
+	my @people = @_;
+	@people = ('author', 'committer') unless @people;
+	foreach my $who (@people) {
+		my %wd = parse_date($co->{"${who}_epoch"}, $co->{"${who}_tz"});
+		print "<tr><td>$who</td><td>" .
+		      format_search_author($co->{"${who}_name"}, $who,
+			       esc_html($co->{"${who}_name"})) . " " .
+		      format_search_author($co->{"${who}_email"}, $who,
+			       esc_html("<" . $co->{"${who}_email"} . ">")) .
+		      "</td><td rowspan=\"2\">" .
+		      git_get_avatar($co->{"${who}_email"}, -size => 'double') .
+		      "</td></tr>\n" .
+		      "<tr>" .
+		      "<td></td><td> $wd{'rfc2822'}";
+		print_local_time(%wd);
+		print "</td>" .
+		      "</tr>\n";
+	}
+}
+
+sub git_print_page_path {
+	my $name = shift;
+	my $type = shift;
+	my $hb = shift;
+
+
+	print "<div class=\"page_path\">";
+	print $cgi->a({-href => href(action=>"tree", hash_base=>$hb),
+	              -title => 'tree root'}, to_utf8("[$project]"));
+	print " / ";
+	if (defined $name) {
+		my @dirname = split '/', $name;
+		my $basename = pop @dirname;
+		my $fullname = '';
+
+		foreach my $dir (@dirname) {
+			$fullname .= ($fullname ? '/' : '') . $dir;
+			print $cgi->a({-href => href(action=>"tree", file_name=>$fullname,
+			                             hash_base=>$hb),
+			              -title => $fullname}, esc_path($dir));
+			print " / ";
+		}
+		if (defined $type && $type eq 'blob') {
+			print $cgi->a({-href => href(action=>"blob_plain", file_name=>$file_name,
+			                             hash_base=>$hb),
+			              -title => $name}, esc_path($basename));
+		} elsif (defined $type && $type eq 'tree') {
+			print $cgi->a({-href => href(action=>"tree", file_name=>$file_name,
+			                             hash_base=>$hb),
+			              -title => $name}, esc_path($basename));
+			print " / ";
+		} else {
+			print esc_path($basename);
+		}
+	}
+	print "<br/></div>\n";
+}
+
+sub git_print_log {
+	my $log = shift;
+	my %opts = @_;
+
+	if ($opts{'-remove_title'}) {
+		# remove title, i.e. first line of log
+		shift @$log;
+	}
+	# remove leading empty lines
+	while (defined $log->[0] && $log->[0] eq "") {
+		shift @$log;
+	}
+
+	# print log
+	my $signoff = 0;
+	my $empty = 0;
+	foreach my $line (@$log) {
+		if ($line =~ m/^ *(signed[ \-]off[ \-]by[ :]|acked[ \-]by[ :]|cc[ :])/i) {
+			$signoff = 1;
+			$empty = 0;
+			if (! $opts{'-remove_signoff'}) {
+				print "<span class=\"signoff\">" . esc_html($line) . "</span><br/>\n";
+				next;
+			} else {
+				# remove signoff lines
+				next;
+			}
+		} else {
+			$signoff = 0;
+		}
+
+		# print only one empty line
+		# do not print empty line after signoff
+		if ($line eq "") {
+			next if ($empty || $signoff);
+			$empty = 1;
+		} else {
+			$empty = 0;
+		}
+
+		print format_log_line_html($line) . "<br/>\n";
+	}
+
+	if ($opts{'-final_empty_line'}) {
+		# end with single empty line
+		print "<br/>\n" unless $empty;
+	}
+}
+
+# return link target (what link points to)
+sub git_get_link_target {
+	my $hash = shift;
+	my $link_target;
+
+	# read link
+	open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
+		or return;
+	{
+		local $/ = undef;
+		$link_target = <$fd>;
+	}
+	close $fd
+		or return;
+
+	return $link_target;
+}
+
+# given link target, and the directory (basedir) the link is in,
+# return target of link relative to top directory (top tree);
+# return undef if it is not possible (including absolute links).
+sub normalize_link_target {
+	my ($link_target, $basedir) = @_;
+
+	# absolute symlinks (beginning with '/') cannot be normalized
+	return if (substr($link_target, 0, 1) eq '/');
+
+	# normalize link target to path from top (root) tree (dir)
+	my $path;
+	if ($basedir) {
+		$path = $basedir . '/' . $link_target;
+	} else {
+		# we are in top (root) tree (dir)
+		$path = $link_target;
+	}
+
+	# remove //, /./, and /../
+	my @path_parts;
+	foreach my $part (split('/', $path)) {
+		# discard '.' and ''
+		next if (!$part || $part eq '.');
+		# handle '..'
+		if ($part eq '..') {
+			if (@path_parts) {
+				pop @path_parts;
+			} else {
+				# link leads outside repository (outside top dir)
+				return;
+			}
+		} else {
+			push @path_parts, $part;
+		}
+	}
+	$path = join('/', @path_parts);
+
+	return $path;
+}
+
+# print tree entry (row of git_tree), but without encompassing <tr> element
+sub git_print_tree_entry {
+	my ($t, $basedir, $hash_base, $have_blame) = @_;
+
+	my %base_key = ();
+	$base_key{'hash_base'} = $hash_base if defined $hash_base;
+
+	# The format of a table row is: mode list link.  Where mode is
+	# the mode of the entry, list is the name of the entry, an href,
+	# and link is the action links of the entry.
+
+	print "<td class=\"mode\">" . mode_str($t->{'mode'}) . "</td>\n";
+	if (exists $t->{'size'}) {
+		print "<td class=\"size\">$t->{'size'}</td>\n";
+	}
+	if ($t->{'type'} eq "blob") {
+		print "<td class=\"list\">" .
+			$cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
+			                       file_name=>"$basedir$t->{'name'}", %base_key),
+			        -class => "list"}, esc_path($t->{'name'}));
+		if (S_ISLNK(oct $t->{'mode'})) {
+			my $link_target = git_get_link_target($t->{'hash'});
+			if ($link_target) {
+				my $norm_target = normalize_link_target($link_target, $basedir);
+				if (defined $norm_target) {
+					print " -> " .
+					      $cgi->a({-href => href(action=>"object", hash_base=>$hash_base,
+					                             file_name=>$norm_target),
+					               -title => $norm_target}, esc_path($link_target));
+				} else {
+					print " -> " . esc_path($link_target);
+				}
+			}
+		}
+		print "</td>\n";
+		print "<td class=\"link\">";
+		print $cgi->a({-href => href(action=>"blob", hash=>$t->{'hash'},
+		                             file_name=>"$basedir$t->{'name'}", %base_key)},
+		              "blob");
+		if ($have_blame) {
+			print " | " .
+			      $cgi->a({-href => href(action=>"blame", hash=>$t->{'hash'},
+			                             file_name=>"$basedir$t->{'name'}", %base_key)},
+			              "blame");
+		}
+		if (defined $hash_base) {
+			print " | " .
+			      $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
+			                             hash=>$t->{'hash'}, file_name=>"$basedir$t->{'name'}")},
+			              "history");
+		}
+		print " | " .
+			$cgi->a({-href => href(action=>"blob_plain", hash_base=>$hash_base,
+			                       file_name=>"$basedir$t->{'name'}")},
+			        "raw");
+		print "</td>\n";
+
+	} elsif ($t->{'type'} eq "tree") {
+		print "<td class=\"list\">";
+		print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
+		                             file_name=>"$basedir$t->{'name'}",
+		                             %base_key)},
+		              esc_path($t->{'name'}));
+		print "</td>\n";
+		print "<td class=\"link\">";
+		print $cgi->a({-href => href(action=>"tree", hash=>$t->{'hash'},
+		                             file_name=>"$basedir$t->{'name'}",
+		                             %base_key)},
+		              "tree");
+		if (defined $hash_base) {
+			print " | " .
+			      $cgi->a({-href => href(action=>"history", hash_base=>$hash_base,
+			                             file_name=>"$basedir$t->{'name'}")},
+			              "history");
+		}
+		print "</td>\n";
+	} else {
+		# unknown object: we can only present history for it
+		# (this includes 'commit' object, i.e. submodule support)
+		print "<td class=\"list\">" .
+		      esc_path($t->{'name'}) .
+		      "</td>\n";
+		print "<td class=\"link\">";
+		if (defined $hash_base) {
+			print $cgi->a({-href => href(action=>"history",
+			                             hash_base=>$hash_base,
+			                             file_name=>"$basedir$t->{'name'}")},
+			              "history");
+		}
+		print "</td>\n";
+	}
+}
+
+## ......................................................................
+## functions printing large fragments of HTML
+
+# get pre-image filenames for merge (combined) diff
+sub fill_from_file_info {
+	my ($diff, @parents) = @_;
+
+	$diff->{'from_file'} = [ ];
+	$diff->{'from_file'}[$diff->{'nparents'} - 1] = undef;
+	for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
+		if ($diff->{'status'}[$i] eq 'R' ||
+		    $diff->{'status'}[$i] eq 'C') {
+			$diff->{'from_file'}[$i] =
+				git_get_path_by_hash($parents[$i], $diff->{'from_id'}[$i]);
+		}
+	}
+
+	return $diff;
+}
+
+# is current raw difftree line of file deletion
+sub is_deleted {
+	my $diffinfo = shift;
+
+	return $diffinfo->{'to_id'} eq ('0' x 40);
+}
+
+# does patch correspond to [previous] difftree raw line
+# $diffinfo  - hashref of parsed raw diff format
+# $patchinfo - hashref of parsed patch diff format
+#              (the same keys as in $diffinfo)
+sub is_patch_split {
+	my ($diffinfo, $patchinfo) = @_;
+
+	return defined $diffinfo && defined $patchinfo
+		&& $diffinfo->{'to_file'} eq $patchinfo->{'to_file'};
+}
+
+
+sub git_difftree_body {
+	my ($difftree, $hash, @parents) = @_;
+	my ($parent) = $parents[0];
+	my $have_blame = gitweb_check_feature('blame');
+	print "<div class=\"list_head\">\n";
+	if ($#{$difftree} > 10) {
+		print(($#{$difftree} + 1) . " files changed:\n");
+	}
+	print "</div>\n";
+
+	print "<table class=\"" .
+	      (@parents > 1 ? "combined " : "") .
+	      "diff_tree\">\n";
+
+	# header only for combined diff in 'commitdiff' view
+	my $has_header = @$difftree && @parents > 1 && $action eq 'commitdiff';
+	if ($has_header) {
+		# table header
+		print "<thead><tr>\n" .
+		       "<th></th><th></th>\n"; # filename, patchN link
+		for (my $i = 0; $i < @parents; $i++) {
+			my $par = $parents[$i];
+			print "<th>" .
+			      $cgi->a({-href => href(action=>"commitdiff",
+			                             hash=>$hash, hash_parent=>$par),
+			               -title => 'commitdiff to parent number ' .
+			                          ($i+1) . ': ' . substr($par,0,7)},
+			              $i+1) .
+			      "&nbsp;</th>\n";
+		}
+		print "</tr></thead>\n<tbody>\n";
+	}
+
+	my $alternate = 1;
+	my $patchno = 0;
+	foreach my $line (@{$difftree}) {
+		my $diff = parsed_difftree_line($line);
+
+		if ($alternate) {
+			print "<tr class=\"dark\">\n";
+		} else {
+			print "<tr class=\"light\">\n";
+		}
+		$alternate ^= 1;
+
+		if (exists $diff->{'nparents'}) { # combined diff
+
+			fill_from_file_info($diff, @parents)
+				unless exists $diff->{'from_file'};
+
+			if (!is_deleted($diff)) {
+				# file exists in the result (child) commit
+				print "<td>" .
+				      $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
+				                             file_name=>$diff->{'to_file'},
+				                             hash_base=>$hash),
+				              -class => "list"}, esc_path($diff->{'to_file'})) .
+				      "</td>\n";
+			} else {
+				print "<td>" .
+				      esc_path($diff->{'to_file'}) .
+				      "</td>\n";
+			}
+
+			if ($action eq 'commitdiff') {
+				# link to patch
+				$patchno++;
+				print "<td class=\"link\">" .
+				      $cgi->a({-href => "#patch$patchno"}, "patch") .
+				      " | " .
+				      "</td>\n";
+			}
+
+			my $has_history = 0;
+			my $not_deleted = 0;
+			for (my $i = 0; $i < $diff->{'nparents'}; $i++) {
+				my $hash_parent = $parents[$i];
+				my $from_hash = $diff->{'from_id'}[$i];
+				my $from_path = $diff->{'from_file'}[$i];
+				my $status = $diff->{'status'}[$i];
+
+				$has_history ||= ($status ne 'A');
+				$not_deleted ||= ($status ne 'D');
+
+				if ($status eq 'A') {
+					print "<td  class=\"link\" align=\"right\"> | </td>\n";
+				} elsif ($status eq 'D') {
+					print "<td class=\"link\">" .
+					      $cgi->a({-href => href(action=>"blob",
+					                             hash_base=>$hash,
+					                             hash=>$from_hash,
+					                             file_name=>$from_path)},
+					              "blob" . ($i+1)) .
+					      " | </td>\n";
+				} else {
+					if ($diff->{'to_id'} eq $from_hash) {
+						print "<td class=\"link nochange\">";
+					} else {
+						print "<td class=\"link\">";
+					}
+					print $cgi->a({-href => href(action=>"blobdiff",
+					                             hash=>$diff->{'to_id'},
+					                             hash_parent=>$from_hash,
+					                             hash_base=>$hash,
+					                             hash_parent_base=>$hash_parent,
+					                             file_name=>$diff->{'to_file'},
+					                             file_parent=>$from_path)},
+					              "diff" . ($i+1)) .
+					      " | </td>\n";
+				}
+			}
+
+			print "<td class=\"link\">";
+			if ($not_deleted) {
+				print $cgi->a({-href => href(action=>"blob",
+				                             hash=>$diff->{'to_id'},
+				                             file_name=>$diff->{'to_file'},
+				                             hash_base=>$hash)},
+				              "blob");
+				print " | " if ($has_history);
+			}
+			if ($has_history) {
+				print $cgi->a({-href => href(action=>"history",
+				                             file_name=>$diff->{'to_file'},
+				                             hash_base=>$hash)},
+				              "history");
+			}
+			print "</td>\n";
+
+			print "</tr>\n";
+			next; # instead of 'else' clause, to avoid extra indent
+		}
+		# else ordinary diff
+
+		my ($to_mode_oct, $to_mode_str, $to_file_type);
+		my ($from_mode_oct, $from_mode_str, $from_file_type);
+		if ($diff->{'to_mode'} ne ('0' x 6)) {
+			$to_mode_oct = oct $diff->{'to_mode'};
+			if (S_ISREG($to_mode_oct)) { # only for regular file
+				$to_mode_str = sprintf("%04o", $to_mode_oct & 0777); # permission bits
+			}
+			$to_file_type = file_type($diff->{'to_mode'});
+		}
+		if ($diff->{'from_mode'} ne ('0' x 6)) {
+			$from_mode_oct = oct $diff->{'from_mode'};
+			if (S_ISREG($to_mode_oct)) { # only for regular file
+				$from_mode_str = sprintf("%04o", $from_mode_oct & 0777); # permission bits
+			}
+			$from_file_type = file_type($diff->{'from_mode'});
+		}
+
+		if ($diff->{'status'} eq "A") { # created
+			my $mode_chng = "<span class=\"file_status new\">[new $to_file_type";
+			$mode_chng   .= " with mode: $to_mode_str" if $to_mode_str;
+			$mode_chng   .= "]</span>";
+			print "<td>";
+			print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
+			                             hash_base=>$hash, file_name=>$diff->{'file'}),
+			              -class => "list"}, esc_path($diff->{'file'}));
+			print "</td>\n";
+			print "<td>$mode_chng</td>\n";
+			print "<td class=\"link\">";
+			if ($action eq 'commitdiff') {
+				# link to patch
+				$patchno++;
+				print $cgi->a({-href => "#patch$patchno"}, "patch");
+				print " | ";
+			}
+			print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
+			                             hash_base=>$hash, file_name=>$diff->{'file'})},
+			              "blob");
+			print "</td>\n";
+
+		} elsif ($diff->{'status'} eq "D") { # deleted
+			my $mode_chng = "<span class=\"file_status deleted\">[deleted $from_file_type]</span>";
+			print "<td>";
+			print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
+			                             hash_base=>$parent, file_name=>$diff->{'file'}),
+			               -class => "list"}, esc_path($diff->{'file'}));
+			print "</td>\n";
+			print "<td>$mode_chng</td>\n";
+			print "<td class=\"link\">";
+			if ($action eq 'commitdiff') {
+				# link to patch
+				$patchno++;
+				print $cgi->a({-href => "#patch$patchno"}, "patch");
+				print " | ";
+			}
+			print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'from_id'},
+			                             hash_base=>$parent, file_name=>$diff->{'file'})},
+			              "blob") . " | ";
+			if ($have_blame) {
+				print $cgi->a({-href => href(action=>"blame", hash_base=>$parent,
+				                             file_name=>$diff->{'file'})},
+				              "blame") . " | ";
+			}
+			print $cgi->a({-href => href(action=>"history", hash_base=>$parent,
+			                             file_name=>$diff->{'file'})},
+			              "history");
+			print "</td>\n";
+
+		} elsif ($diff->{'status'} eq "M" || $diff->{'status'} eq "T") { # modified, or type changed
+			my $mode_chnge = "";
+			if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
+				$mode_chnge = "<span class=\"file_status mode_chnge\">[changed";
+				if ($from_file_type ne $to_file_type) {
+					$mode_chnge .= " from $from_file_type to $to_file_type";
+				}
+				if (($from_mode_oct & 0777) != ($to_mode_oct & 0777)) {
+					if ($from_mode_str && $to_mode_str) {
+						$mode_chnge .= " mode: $from_mode_str->$to_mode_str";
+					} elsif ($to_mode_str) {
+						$mode_chnge .= " mode: $to_mode_str";
+					}
+				}
+				$mode_chnge .= "]</span>\n";
+			}
+			print "<td>";
+			print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
+			                             hash_base=>$hash, file_name=>$diff->{'file'}),
+			              -class => "list"}, esc_path($diff->{'file'}));
+			print "</td>\n";
+			print "<td>$mode_chnge</td>\n";
+			print "<td class=\"link\">";
+			if ($action eq 'commitdiff') {
+				# link to patch
+				$patchno++;
+				print $cgi->a({-href => "#patch$patchno"}, "patch") .
+				      " | ";
+			} elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
+				# "commit" view and modified file (not onlu mode changed)
+				print $cgi->a({-href => href(action=>"blobdiff",
+				                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
+				                             hash_base=>$hash, hash_parent_base=>$parent,
+				                             file_name=>$diff->{'file'})},
+				              "diff") .
+				      " | ";
+			}
+			print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
+			                             hash_base=>$hash, file_name=>$diff->{'file'})},
+			               "blob") . " | ";
+			if ($have_blame) {
+				print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
+				                             file_name=>$diff->{'file'})},
+				              "blame") . " | ";
+			}
+			print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
+			                             file_name=>$diff->{'file'})},
+			              "history");
+			print "</td>\n";
+
+		} elsif ($diff->{'status'} eq "R" || $diff->{'status'} eq "C") { # renamed or copied
+			my %status_name = ('R' => 'moved', 'C' => 'copied');
+			my $nstatus = $status_name{$diff->{'status'}};
+			my $mode_chng = "";
+			if ($diff->{'from_mode'} != $diff->{'to_mode'}) {
+				# mode also for directories, so we cannot use $to_mode_str
+				$mode_chng = sprintf(", mode: %04o", $to_mode_oct & 0777);
+			}
+			print "<td>" .
+			      $cgi->a({-href => href(action=>"blob", hash_base=>$hash,
+			                             hash=>$diff->{'to_id'}, file_name=>$diff->{'to_file'}),
+			              -class => "list"}, esc_path($diff->{'to_file'})) . "</td>\n" .
+			      "<td><span class=\"file_status $nstatus\">[$nstatus from " .
+			      $cgi->a({-href => href(action=>"blob", hash_base=>$parent,
+			                             hash=>$diff->{'from_id'}, file_name=>$diff->{'from_file'}),
+			              -class => "list"}, esc_path($diff->{'from_file'})) .
+			      " with " . (int $diff->{'similarity'}) . "% similarity$mode_chng]</span></td>\n" .
+			      "<td class=\"link\">";
+			if ($action eq 'commitdiff') {
+				# link to patch
+				$patchno++;
+				print $cgi->a({-href => "#patch$patchno"}, "patch") .
+				      " | ";
+			} elsif ($diff->{'to_id'} ne $diff->{'from_id'}) {
+				# "commit" view and modified file (not only pure rename or copy)
+				print $cgi->a({-href => href(action=>"blobdiff",
+				                             hash=>$diff->{'to_id'}, hash_parent=>$diff->{'from_id'},
+				                             hash_base=>$hash, hash_parent_base=>$parent,
+				                             file_name=>$diff->{'to_file'}, file_parent=>$diff->{'from_file'})},
+				              "diff") .
+				      " | ";
+			}
+			print $cgi->a({-href => href(action=>"blob", hash=>$diff->{'to_id'},
+			                             hash_base=>$parent, file_name=>$diff->{'to_file'})},
+			              "blob") . " | ";
+			if ($have_blame) {
+				print $cgi->a({-href => href(action=>"blame", hash_base=>$hash,
+				                             file_name=>$diff->{'to_file'})},
+				              "blame") . " | ";
+			}
+			print $cgi->a({-href => href(action=>"history", hash_base=>$hash,
+			                            file_name=>$diff->{'to_file'})},
+			              "history");
+			print "</td>\n";
+
+		} # we should not encounter Unmerged (U) or Unknown (X) status
+		print "</tr>\n";
+	}
+	print "</tbody>" if $has_header;
+	print "</table>\n";
+}
+
+sub git_patchset_body {
+	my ($fd, $difftree, $hash, @hash_parents) = @_;
+	my ($hash_parent) = $hash_parents[0];
+
+	my $is_combined = (@hash_parents > 1);
+	my $patch_idx = 0;
+	my $patch_number = 0;
+	my $patch_line;
+	my $diffinfo;
+	my $to_name;
+	my (%from, %to);
+
+	print "<div class=\"patchset\">\n";
+
+	# skip to first patch
+	while ($patch_line = <$fd>) {
+		chomp $patch_line;
+
+		last if ($patch_line =~ m/^diff /);
+	}
+
+ PATCH:
+	while ($patch_line) {
+
+		# parse "git diff" header line
+		if ($patch_line =~ m/^diff --git (\"(?:[^\\\"]*(?:\\.[^\\\"]*)*)\"|[^ "]*) (.*)$/) {
+			# $1 is from_name, which we do not use
+			$to_name = unquote($2);
+			$to_name =~ s!^b/!!;
+		} elsif ($patch_line =~ m/^diff --(cc|combined) ("?.*"?)$/) {
+			# $1 is 'cc' or 'combined', which we do not use
+			$to_name = unquote($2);
+		} else {
+			$to_name = undef;
+		}
+
+		# check if current patch belong to current raw line
+		# and parse raw git-diff line if needed
+		if (is_patch_split($diffinfo, { 'to_file' => $to_name })) {
+			# this is continuation of a split patch
+			print "<div class=\"patch cont\">\n";
+		} else {
+			# advance raw git-diff output if needed
+			$patch_idx++ if defined $diffinfo;
+
+			# read and prepare patch information
+			$diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
+
+			# compact combined diff output can have some patches skipped
+			# find which patch (using pathname of result) we are at now;
+			if ($is_combined) {
+				while ($to_name ne $diffinfo->{'to_file'}) {
+					print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
+					      format_diff_cc_simplified($diffinfo, @hash_parents) .
+					      "</div>\n";  # class="patch"
+
+					$patch_idx++;
+					$patch_number++;
+
+					last if $patch_idx > $#$difftree;
+					$diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
+				}
+			}
+
+			# modifies %from, %to hashes
+			parse_from_to_diffinfo($diffinfo, \%from, \%to, @hash_parents);
+
+			# this is first patch for raw difftree line with $patch_idx index
+			# we index @$difftree array from 0, but number patches from 1
+			print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n";
+		}
+
+		# git diff header
+		#assert($patch_line =~ m/^diff /) if DEBUG;
+		#assert($patch_line !~ m!$/$!) if DEBUG; # is chomp-ed
+		$patch_number++;
+		# print "git diff" header
+		print format_git_diff_header_line($patch_line, $diffinfo,
+		                                  \%from, \%to);
+
+		# print extended diff header
+		print "<div class=\"diff extended_header\">\n";
+	EXTENDED_HEADER:
+		while ($patch_line = <$fd>) {
+			chomp $patch_line;
+
+			last EXTENDED_HEADER if ($patch_line =~ m/^--- |^diff /);
+
+			print format_extended_diff_header_line($patch_line, $diffinfo,
+			                                       \%from, \%to);
+		}
+		print "</div>\n"; # class="diff extended_header"
+
+		# from-file/to-file diff header
+		if (! $patch_line) {
+			print "</div>\n"; # class="patch"
+			last PATCH;
+		}
+		next PATCH if ($patch_line =~ m/^diff /);
+		#assert($patch_line =~ m/^---/) if DEBUG;
+
+		my $last_patch_line = $patch_line;
+		$patch_line = <$fd>;
+		chomp $patch_line;
+		#assert($patch_line =~ m/^\+\+\+/) if DEBUG;
+
+		print format_diff_from_to_header($last_patch_line, $patch_line,
+		                                 $diffinfo, \%from, \%to,
+		                                 @hash_parents);
+
+		# the patch itself
+	LINE:
+		while ($patch_line = <$fd>) {
+			chomp $patch_line;
+
+			next PATCH if ($patch_line =~ m/^diff /);
+
+			print format_diff_line($patch_line, \%from, \%to);
+		}
+
+	} continue {
+		print "</div>\n"; # class="patch"
+	}
+
+	# for compact combined (--cc) format, with chunk and patch simplification
+	# the patchset might be empty, but there might be unprocessed raw lines
+	for (++$patch_idx if $patch_number > 0;
+	     $patch_idx < @$difftree;
+	     ++$patch_idx) {
+		# read and prepare patch information
+		$diffinfo = parsed_difftree_line($difftree->[$patch_idx]);
+
+		# generate anchor for "patch" links in difftree / whatchanged part
+		print "<div class=\"patch\" id=\"patch". ($patch_idx+1) ."\">\n" .
+		      format_diff_cc_simplified($diffinfo, @hash_parents) .
+		      "</div>\n";  # class="patch"
+
+		$patch_number++;
+	}
+
+	if ($patch_number == 0) {
+		if (@hash_parents > 1) {
+			print "<div class=\"diff nodifferences\">Trivial merge</div>\n";
+		} else {
+			print "<div class=\"diff nodifferences\">No differences found</div>\n";
+		}
+	}
+
+	print "</div>\n"; # class="patchset"
+}
+
+# . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+
+# fills project list info (age, description, owner, forks) for each
+# project in the list, removing invalid projects from returned list
+# NOTE: modifies $projlist, but does not remove entries from it
+sub fill_project_list_info {
+	my ($projlist, $check_forks) = @_;
+	my @projects;
+
+	my $show_ctags = gitweb_check_feature('ctags');
+ PROJECT:
+	foreach my $pr (@$projlist) {
+		my (@activity) = git_get_last_activity($pr->{'path'});
+		unless (@activity) {
+			next PROJECT;
+		}
+		($pr->{'age'}, $pr->{'age_string'}) = @activity;
+		if (!defined $pr->{'descr'}) {
+			my $descr = git_get_project_description($pr->{'path'}) || "";
+			$descr = to_utf8($descr);
+			$pr->{'descr_long'} = $descr;
+			$pr->{'descr'} = chop_str($descr, $projects_list_description_width, 5);
+		}
+		if (!defined $pr->{'owner'}) {
+			$pr->{'owner'} = git_get_project_owner("$pr->{'path'}") || "";
+		}
+		if ($check_forks) {
+			my $pname = $pr->{'path'};
+			if (($pname =~ s/\.git$//) &&
+			    ($pname !~ /\/$/) &&
+			    (-d "$projectroot/$pname")) {
+				$pr->{'forks'} = "-d $projectroot/$pname";
+			} else {
+				$pr->{'forks'} = 0;
+			}
+		}
+		$show_ctags and $pr->{'ctags'} = git_get_project_ctags($pr->{'path'});
+		push @projects, $pr;
+	}
+
+	return @projects;
+}
+
+# print 'sort by' <th> element, generating 'sort by $name' replay link
+# if that order is not selected
+sub print_sort_th {
+	print format_sort_th(@_);
+}
+
+sub format_sort_th {
+	my ($name, $order, $header) = @_;
+	my $sort_th = "";
+	$header ||= ucfirst($name);
+
+	if ($order eq $name) {
+		$sort_th .= "<th>$header</th>\n";
+	} else {
+		$sort_th .= "<th>" .
+		            $cgi->a({-href => href(-replay=>1, order=>$name),
+		                     -class => "header"}, $header) .
+		            "</th>\n";
+	}
+
+	return $sort_th;
+}
+
+sub git_project_list_body {
+	# actually uses global variable $project
+	my ($projlist, $order, $from, $to, $extra, $no_header) = @_;
+
+	my $check_forks = gitweb_check_feature('forks');
+	my @projects = fill_project_list_info($projlist, $check_forks);
+
+	$order ||= $default_projects_order;
+	$from = 0 unless defined $from;
+	$to = $#projects if (!defined $to || $#projects < $to);
+
+	my %order_info = (
+		project => { key => 'path', type => 'str' },
+		descr => { key => 'descr_long', type => 'str' },
+		owner => { key => 'owner', type => 'str' },
+		age => { key => 'age', type => 'num' }
+	);
+	my $oi = $order_info{$order};
+	if ($oi->{'type'} eq 'str') {
+		@projects = sort {$a->{$oi->{'key'}} cmp $b->{$oi->{'key'}}} @projects;
+	} else {
+		@projects = sort {$a->{$oi->{'key'}} <=> $b->{$oi->{'key'}}} @projects;
+	}
+
+	my $show_ctags = gitweb_check_feature('ctags');
+	if ($show_ctags) {
+		my %ctags;
+		foreach my $p (@projects) {
+			foreach my $ct (keys %{$p->{'ctags'}}) {
+				$ctags{$ct} += $p->{'ctags'}->{$ct};
+			}
+		}
+		my $cloud = git_populate_project_tagcloud(\%ctags);
+		print git_show_project_tagcloud($cloud, 64);
+	}
+
+	print "<table class=\"project_list\">\n";
+	unless ($no_header) {
+		print "<tr>\n";
+		if ($check_forks) {
+			print "<th></th>\n";
+		}
+		print_sort_th('project', $order, 'Project');
+		print_sort_th('descr', $order, 'Description');
+		print_sort_th('owner', $order, 'Owner');
+		print_sort_th('age', $order, 'Last Change');
+		print "<th></th>\n" . # for links
+		      "</tr>\n";
+	}
+	my $alternate = 1;
+	my $tagfilter = $cgi->param('by_tag');
+	for (my $i = $from; $i <= $to; $i++) {
+		my $pr = $projects[$i];
+
+		next if $tagfilter and $show_ctags and not grep { lc $_ eq lc $tagfilter } keys %{$pr->{'ctags'}};
+		next if $searchtext and not $pr->{'path'} =~ /$searchtext/
+			and not $pr->{'descr_long'} =~ /$searchtext/;
+		# Weed out forks or non-matching entries of search
+		if ($check_forks) {
+			my $forkbase = $project; $forkbase ||= ''; $forkbase =~ s#\.git$#/#;
+			$forkbase="^$forkbase" if $forkbase;
+			next if not $searchtext and not $tagfilter and $show_ctags
+				and $pr->{'path'} =~ m#$forkbase.*/.*#; # regexp-safe
+		}
+
+		if ($alternate) {
+			print "<tr class=\"dark\">\n";
+		} else {
+			print "<tr class=\"light\">\n";
+		}
+		$alternate ^= 1;
+		if ($check_forks) {
+			print "<td>";
+			if ($pr->{'forks'}) {
+				print "<!-- $pr->{'forks'} -->\n";
+				print $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "+");
+			}
+			print "</td>\n";
+		}
+		print "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
+		                        -class => "list"}, esc_html($pr->{'path'})) . "</td>\n" .
+		      "<td>" . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary"),
+		                        -class => "list", -title => $pr->{'descr_long'}},
+		                        esc_html($pr->{'descr'})) . "</td>\n" .
+		      "<td><i>" . chop_and_escape_str($pr->{'owner'}, 15) . "</i></td>\n";
+		print "<td class=\"". age_class($pr->{'age'}) . "\">" .
+		      (defined $pr->{'age_string'} ? $pr->{'age_string'} : "No commits") . "</td>\n" .
+		      "<td class=\"link\">" .
+		      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"summary")}, "summary")   . " | " .
+		      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"shortlog")}, "shortlog") . " | " .
+		      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"log")}, "log") . " | " .
+		      $cgi->a({-href => href(project=>$pr->{'path'}, action=>"tree")}, "tree") .
+		      ($pr->{'forks'} ? " | " . $cgi->a({-href => href(project=>$pr->{'path'}, action=>"forks")}, "forks") : '') .
+		      "</td>\n" .
+		      "</tr>\n";
+	}
+	if (defined $extra) {
+		print "<tr>\n";
+		if ($check_forks) {
+			print "<td></td>\n";
+		}
+		print "<td colspan=\"5\">$extra</td>\n" .
+		      "</tr>\n";
+	}
+	print "</table>\n";
+}
+
+sub git_log_body {
+	# uses global variable $project
+	my ($commitlist, $from, $to, $refs, $extra) = @_;
+
+	$from = 0 unless defined $from;
+	$to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
+
+	for (my $i = 0; $i <= $to; $i++) {
+		my %co = %{$commitlist->[$i]};
+		next if !%co;
+		my $commit = $co{'id'};
+		my $ref = format_ref_marker($refs, $commit);
+		my %ad = parse_date($co{'author_epoch'});
+		git_print_header_div('commit',
+		               "<span class=\"age\">$co{'age_string'}</span>" .
+		               esc_html($co{'title'}) . $ref,
+		               $commit);
+		print "<div class=\"title_text\">\n" .
+		      "<div class=\"log_link\">\n" .
+		      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") .
+		      " | " .
+		      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") .
+		      " | " .
+		      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree") .
+		      "<br/>\n" .
+		      "</div>\n";
+		      git_print_authorship(\%co, -tag => 'span');
+		      print "<br/>\n</div>\n";
+
+		print "<div class=\"log_body\">\n";
+		git_print_log($co{'comment'}, -final_empty_line=> 1);
+		print "</div>\n";
+	}
+	if ($extra) {
+		print "<div class=\"page_nav\">\n";
+		print "$extra\n";
+		print "</div>\n";
+	}
+}
+
+sub git_shortlog_body {
+	# uses global variable $project
+	my ($commitlist, $from, $to, $refs, $extra) = @_;
+
+	$from = 0 unless defined $from;
+	$to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
+
+	print "<table class=\"shortlog\">\n";
+	my $alternate = 1;
+	for (my $i = $from; $i <= $to; $i++) {
+		my %co = %{$commitlist->[$i]};
+		my $commit = $co{'id'};
+		my $ref = format_ref_marker($refs, $commit);
+		if ($alternate) {
+			print "<tr class=\"dark\">\n";
+		} else {
+			print "<tr class=\"light\">\n";
+		}
+		$alternate ^= 1;
+		# git_summary() used print "<td><i>$co{'age_string'}</i></td>\n" .
+		print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
+		      format_author_html('td', \%co, 10) . "<td>";
+		print format_subject_html($co{'title'}, $co{'title_short'},
+		                          href(action=>"commit", hash=>$commit), $ref);
+		print "</td>\n" .
+		      "<td class=\"link\">" .
+		      $cgi->a({-href => href(action=>"commit", hash=>$commit)}, "commit") . " | " .
+		      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff") . " | " .
+		      $cgi->a({-href => href(action=>"tree", hash=>$commit, hash_base=>$commit)}, "tree");
+		my $snapshot_links = format_snapshot_links($commit);
+		if (defined $snapshot_links) {
+			print " | " . $snapshot_links;
+		}
+		print "</td>\n" .
+		      "</tr>\n";
+	}
+	if (defined $extra) {
+		print "<tr>\n" .
+		      "<td colspan=\"4\">$extra</td>\n" .
+		      "</tr>\n";
+	}
+	print "</table>\n";
+}
+
+sub git_history_body {
+	# Warning: assumes constant type (blob or tree) during history
+	my ($commitlist, $from, $to, $refs, $extra,
+	    $file_name, $file_hash, $ftype) = @_;
+
+	$from = 0 unless defined $from;
+	$to = $#{$commitlist} unless (defined $to && $to <= $#{$commitlist});
+
+	print "<table class=\"history\">\n";
+	my $alternate = 1;
+	for (my $i = $from; $i <= $to; $i++) {
+		my %co = %{$commitlist->[$i]};
+		if (!%co) {
+			next;
+		}
+		my $commit = $co{'id'};
+
+		my $ref = format_ref_marker($refs, $commit);
+
+		if ($alternate) {
+			print "<tr class=\"dark\">\n";
+		} else {
+			print "<tr class=\"light\">\n";
+		}
+		$alternate ^= 1;
+		print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
+	# shortlog:   format_author_html('td', \%co, 10)
+		      format_author_html('td', \%co, 15, 3) . "<td>";
+		# originally git_history used chop_str($co{'title'}, 50)
+		print format_subject_html($co{'title'}, $co{'title_short'},
+		                          href(action=>"commit", hash=>$commit), $ref);
+		print "</td>\n" .
+		      "<td class=\"link\">" .
+		      $cgi->a({-href => href(action=>$ftype, hash_base=>$commit, file_name=>$file_name)}, $ftype) . " | " .
+		      $cgi->a({-href => href(action=>"commitdiff", hash=>$commit)}, "commitdiff");
+
+		if ($ftype eq 'blob') {
+			my $blob_current = $file_hash;
+			my $blob_parent  = git_get_hash_by_path($commit, $file_name);
+			if (defined $blob_current && defined $blob_parent &&
+					$blob_current ne $blob_parent) {
+				print " | " .
+					$cgi->a({-href => href(action=>"blobdiff",
+					                       hash=>$blob_current, hash_parent=>$blob_parent,
+					                       hash_base=>$hash_base, hash_parent_base=>$commit,
+					                       file_name=>$file_name)},
+					        "diff to current");
+			}
+		}
+		print "</td>\n" .
+		      "</tr>\n";
+	}
+	if (defined $extra) {
+		print "<tr>\n" .
+		      "<td colspan=\"4\">$extra</td>\n" .
+		      "</tr>\n";
+	}
+	print "</table>\n";
+}
+
+sub git_tags_body {
+	# uses global variable $project
+	my ($taglist, $from, $to, $extra) = @_;
+	$from = 0 unless defined $from;
+	$to = $#{$taglist} if (!defined $to || $#{$taglist} < $to);
+
+	print "<table class=\"tags\">\n";
+	my $alternate = 1;
+	for (my $i = $from; $i <= $to; $i++) {
+		my $entry = $taglist->[$i];
+		my %tag = %$entry;
+		my $comment = $tag{'subject'};
+		my $comment_short;
+		if (defined $comment) {
+			$comment_short = chop_str($comment, 30, 5);
+		}
+		if ($alternate) {
+			print "<tr class=\"dark\">\n";
+		} else {
+			print "<tr class=\"light\">\n";
+		}
+		$alternate ^= 1;
+		if (defined $tag{'age'}) {
+			print "<td><i>$tag{'age'}</i></td>\n";
+		} else {
+			print "<td></td>\n";
+		}
+		print "<td>" .
+		      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'}),
+		               -class => "list name"}, esc_html($tag{'name'})) .
+		      "</td>\n" .
+		      "<td>";
+		if (defined $comment) {
+			print format_subject_html($comment, $comment_short,
+			                          href(action=>"tag", hash=>$tag{'id'}));
+		}
+		print "</td>\n" .
+		      "<td class=\"selflink\">";
+		if ($tag{'type'} eq "tag") {
+			print $cgi->a({-href => href(action=>"tag", hash=>$tag{'id'})}, "tag");
+		} else {
+			print "&nbsp;";
+		}
+		print "</td>\n" .
+		      "<td class=\"link\">" . " | " .
+		      $cgi->a({-href => href(action=>$tag{'reftype'}, hash=>$tag{'refid'})}, $tag{'reftype'});
+		if ($tag{'reftype'} eq "commit") {
+			print " | " . $cgi->a({-href => href(action=>"shortlog", hash=>$tag{'fullname'})}, "shortlog") .
+			      " | " . $cgi->a({-href => href(action=>"log", hash=>$tag{'fullname'})}, "log");
+		} elsif ($tag{'reftype'} eq "blob") {
+			print " | " . $cgi->a({-href => href(action=>"blob_plain", hash=>$tag{'refid'})}, "raw");
+		}
+		print "</td>\n" .
+		      "</tr>";
+	}
+	if (defined $extra) {
+		print "<tr>\n" .
+		      "<td colspan=\"5\">$extra</td>\n" .
+		      "</tr>\n";
+	}
+	print "</table>\n";
+}
+
+sub git_heads_body {
+	# uses global variable $project
+	my ($headlist, $head, $from, $to, $extra) = @_;
+	$from = 0 unless defined $from;
+	$to = $#{$headlist} if (!defined $to || $#{$headlist} < $to);
+
+	print "<table class=\"heads\">\n";
+	my $alternate = 1;
+	for (my $i = $from; $i <= $to; $i++) {
+		my $entry = $headlist->[$i];
+		my %ref = %$entry;
+		my $curr = $ref{'id'} eq $head;
+		if ($alternate) {
+			print "<tr class=\"dark\">\n";
+		} else {
+			print "<tr class=\"light\">\n";
+		}
+		$alternate ^= 1;
+		print "<td><i>$ref{'age'}</i></td>\n" .
+		      ($curr ? "<td class=\"current_head\">" : "<td>") .
+		      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'}),
+		               -class => "list name"},esc_html($ref{'name'})) .
+		      "</td>\n" .
+		      "<td class=\"link\">" .
+		      $cgi->a({-href => href(action=>"shortlog", hash=>$ref{'fullname'})}, "shortlog") . " | " .
+		      $cgi->a({-href => href(action=>"log", hash=>$ref{'fullname'})}, "log") . " | " .
+		      $cgi->a({-href => href(action=>"tree", hash=>$ref{'fullname'}, hash_base=>$ref{'name'})}, "tree") .
+		      "</td>\n" .
+		      "</tr>";
+	}
+	if (defined $extra) {
+		print "<tr>\n" .
+		      "<td colspan=\"3\">$extra</td>\n" .
+		      "</tr>\n";
+	}
+	print "</table>\n";
+}
+
+sub git_search_grep_body {
+	my ($commitlist, $from, $to, $extra) = @_;
+	$from = 0 unless defined $from;
+	$to = $#{$commitlist} if (!defined $to || $#{$commitlist} < $to);
+
+	print "<table class=\"commit_search\">\n";
+	my $alternate = 1;
+	for (my $i = $from; $i <= $to; $i++) {
+		my %co = %{$commitlist->[$i]};
+		if (!%co) {
+			next;
+		}
+		my $commit = $co{'id'};
+		if ($alternate) {
+			print "<tr class=\"dark\">\n";
+		} else {
+			print "<tr class=\"light\">\n";
+		}
+		$alternate ^= 1;
+		print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
+		      format_author_html('td', \%co, 15, 5) .
+		      "<td>" .
+		      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
+		               -class => "list subject"},
+		              chop_and_escape_str($co{'title'}, 50) . "<br/>");
+		my $comment = $co{'comment'};
+		foreach my $line (@$comment) {
+			if ($line =~ m/^(.*?)($search_regexp)(.*)$/i) {
+				my ($lead, $match, $trail) = ($1, $2, $3);
+				$match = chop_str($match, 70, 5, 'center');
+				my $contextlen = int((80 - length($match))/2);
+				$contextlen = 30 if ($contextlen > 30);
+				$lead  = chop_str($lead,  $contextlen, 10, 'left');
+				$trail = chop_str($trail, $contextlen, 10, 'right');
+
+				$lead  = esc_html($lead);
+				$match = esc_html($match);
+				$trail = esc_html($trail);
+
+				print "$lead<span class=\"match\">$match</span>$trail<br />";
+			}
+		}
+		print "</td>\n" .
+		      "<td class=\"link\">" .
+		      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
+		      " | " .
+		      $cgi->a({-href => href(action=>"commitdiff", hash=>$co{'id'})}, "commitdiff") .
+		      " | " .
+		      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
+		print "</td>\n" .
+		      "</tr>\n";
+	}
+	if (defined $extra) {
+		print "<tr>\n" .
+		      "<td colspan=\"3\">$extra</td>\n" .
+		      "</tr>\n";
+	}
+	print "</table>\n";
+}
+
+## ======================================================================
+## ======================================================================
+## actions
+
+sub git_project_list {
+	my $order = $input_params{'order'};
+	if (defined $order && $order !~ m/none|project|descr|owner|age/) {
+		die_error(400, "Unknown order parameter");
+	}
+
+	my @list = git_get_projects_list();
+	if (!@list) {
+		die_error(404, "No projects found");
+	}
+
+	git_header_html();
+	if (defined $home_text && -f $home_text) {
+		print "<div class=\"index_include\">\n";
+		insert_file($home_text);
+		print "</div>\n";
+	}
+	print $cgi->startform(-method => "get") .
+	      "<p class=\"projsearch\">Search:\n" .
+	      $cgi->textfield(-name => "s", -value => $searchtext) . "\n" .
+	      "</p>" .
+	      $cgi->end_form() . "\n";
+	git_project_list_body(\@list, $order);
+	git_footer_html();
+}
+
+sub git_forks {
+	my $order = $input_params{'order'};
+	if (defined $order && $order !~ m/none|project|descr|owner|age/) {
+		die_error(400, "Unknown order parameter");
+	}
+
+	my @list = git_get_projects_list($project);
+	if (!@list) {
+		die_error(404, "No forks found");
+	}
+
+	git_header_html();
+	git_print_page_nav('','');
+	git_print_header_div('summary', "$project forks");
+	git_project_list_body(\@list, $order);
+	git_footer_html();
+}
+
+sub git_project_index {
+	my @projects = git_get_projects_list($project);
+
+	print $cgi->header(
+		-type => 'text/plain',
+		-charset => 'utf-8',
+		-content_disposition => 'inline; filename="index.aux"');
+
+	foreach my $pr (@projects) {
+		if (!exists $pr->{'owner'}) {
+			$pr->{'owner'} = git_get_project_owner("$pr->{'path'}");
+		}
+
+		my ($path, $owner) = ($pr->{'path'}, $pr->{'owner'});
+		# quote as in CGI::Util::encode, but keep the slash, and use '+' for ' '
+		$path  =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
+		$owner =~ s/([^a-zA-Z0-9_.\-\/ ])/sprintf("%%%02X", ord($1))/eg;
+		$path  =~ s/ /\+/g;
+		$owner =~ s/ /\+/g;
+
+		print "$path $owner\n";
+	}
+}
+
+sub git_summary {
+	my $descr = git_get_project_description($project) || "none";
+	my %co = parse_commit("HEAD");
+	my %cd = %co ? parse_date($co{'committer_epoch'}, $co{'committer_tz'}) : ();
+	my $head = $co{'id'};
+
+	my $owner = git_get_project_owner($project);
+
+	my $refs = git_get_references();
+	# These get_*_list functions return one more to allow us to see if
+	# there are more ...
+	my @taglist  = git_get_tags_list(16);
+	my @headlist = git_get_heads_list(16);
+	my @forklist;
+	my $check_forks = gitweb_check_feature('forks');
+
+	if ($check_forks) {
+		@forklist = git_get_projects_list($project);
+	}
+
+	git_header_html();
+	git_print_page_nav('summary','', $head);
+
+	print "<div class=\"title\">&nbsp;</div>\n";
+	print "<table class=\"projects_list\">\n" .
+	      "<tr id=\"metadata_desc\"><td>description</td><td>" . esc_html($descr) . "</td></tr>\n" .
+	      "<tr id=\"metadata_owner\"><td>owner</td><td>" . esc_html($owner) . "</td></tr>\n";
+	if (defined $cd{'rfc2822'}) {
+		print "<tr id=\"metadata_lchange\"><td>last change</td><td>$cd{'rfc2822'}</td></tr>\n";
+	}
+
+	# use per project git URL list in $projectroot/$project/cloneurl
+	# or make project git URL from git base URL and project name
+	my $url_tag = "URL";
+	my @url_list = git_get_project_url_list($project);
+	@url_list = map { "$_/$project" } @git_base_url_list unless @url_list;
+	foreach my $git_url (@url_list) {
+		next unless $git_url;
+		print "<tr class=\"metadata_url\"><td>$url_tag</td><td>$git_url</td></tr>\n";
+		$url_tag = "";
+	}
+
+	# Tag cloud
+	my $show_ctags = gitweb_check_feature('ctags');
+	if ($show_ctags) {
+		my $ctags = git_get_project_ctags($project);
+		my $cloud = git_populate_project_tagcloud($ctags);
+		print "<tr id=\"metadata_ctags\"><td>Content tags:<br />";
+		print "</td>\n<td>" unless %$ctags;
+		print "<form action=\"$show_ctags\" method=\"post\"><input type=\"hidden\" name=\"p\" value=\"$project\" />Add: <input type=\"text\" name=\"t\" size=\"8\" /></form>";
+		print "</td>\n<td>" if %$ctags;
+		print git_show_project_tagcloud($cloud, 48);
+		print "</td></tr>";
+	}
+
+	print "</table>\n";
+
+	# If XSS prevention is on, we don't include README.html.
+	# TODO: Allow a readme in some safe format.
+	if (!$prevent_xss && -s "$projectroot/$project/README.html") {
+		print "<div class=\"title\">readme</div>\n" .
+		      "<div class=\"readme\">\n";
+		insert_file("$projectroot/$project/README.html");
+		print "\n</div>\n"; # class="readme"
+	}
+
+	# we need to request one more than 16 (0..15) to check if
+	# those 16 are all
+	my @commitlist = $head ? parse_commits($head, 17) : ();
+	if (@commitlist) {
+		git_print_header_div('shortlog');
+		git_shortlog_body(\@commitlist, 0, 15, $refs,
+		                  $#commitlist <=  15 ? undef :
+		                  $cgi->a({-href => href(action=>"shortlog")}, "..."));
+	}
+
+	if (@taglist) {
+		git_print_header_div('tags');
+		git_tags_body(\@taglist, 0, 15,
+		              $#taglist <=  15 ? undef :
+		              $cgi->a({-href => href(action=>"tags")}, "..."));
+	}
+
+	if (@headlist) {
+		git_print_header_div('heads');
+		git_heads_body(\@headlist, $head, 0, 15,
+		               $#headlist <= 15 ? undef :
+		               $cgi->a({-href => href(action=>"heads")}, "..."));
+	}
+
+	if (@forklist) {
+		git_print_header_div('forks');
+		git_project_list_body(\@forklist, 'age', 0, 15,
+		                      $#forklist <= 15 ? undef :
+		                      $cgi->a({-href => href(action=>"forks")}, "..."),
+		                      'no_header');
+	}
+
+	git_footer_html();
+}
+
+sub git_tag {
+	my $head = git_get_head_hash($project);
+	git_header_html();
+	git_print_page_nav('','', $head,undef,$head);
+	my %tag = parse_tag($hash);
+
+	if (! %tag) {
+		die_error(404, "Unknown tag object");
+	}
+
+	git_print_header_div('commit', esc_html($tag{'name'}), $hash);
+	print "<div class=\"title_text\">\n" .
+	      "<table class=\"object_header\">\n" .
+	      "<tr>\n" .
+	      "<td>object</td>\n" .
+	      "<td>" . $cgi->a({-class => "list", -href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
+	                       $tag{'object'}) . "</td>\n" .
+	      "<td class=\"link\">" . $cgi->a({-href => href(action=>$tag{'type'}, hash=>$tag{'object'})},
+	                                      $tag{'type'}) . "</td>\n" .
+	      "</tr>\n";
+	if (defined($tag{'author'})) {
+		git_print_authorship_rows(\%tag, 'author');
+	}
+	print "</table>\n\n" .
+	      "</div>\n";
+	print "<div class=\"page_body\">";
+	my $comment = $tag{'comment'};
+	foreach my $line (@$comment) {
+		chomp $line;
+		print esc_html($line, -nbsp=>1) . "<br/>\n";
+	}
+	print "</div>\n";
+	git_footer_html();
+}
+
+sub git_blame_common {
+	my $format = shift || 'porcelain';
+	if ($format eq 'porcelain' && $cgi->param('js')) {
+		$format = 'incremental';
+		$action = 'blame_incremental'; # for page title etc
+	}
+
+	# permissions
+	gitweb_check_feature('blame')
+		or die_error(403, "Blame view not allowed");
+
+	# error checking
+	die_error(400, "No file name given") unless $file_name;
+	$hash_base ||= git_get_head_hash($project);
+	die_error(404, "Couldn't find base commit") unless $hash_base;
+	my %co = parse_commit($hash_base)
+		or die_error(404, "Commit not found");
+	my $ftype = "blob";
+	if (!defined $hash) {
+		$hash = git_get_hash_by_path($hash_base, $file_name, "blob")
+			or die_error(404, "Error looking up file");
+	} else {
+		$ftype = git_get_type($hash);
+		if ($ftype !~ "blob") {
+			die_error(400, "Object is not a blob");
+		}
+	}
+
+	my $fd;
+	if ($format eq 'incremental') {
+		# get file contents (as base)
+		open $fd, "-|", git_cmd(), 'cat-file', 'blob', $hash
+			or die_error(500, "Open git-cat-file failed");
+	} elsif ($format eq 'data') {
+		# run git-blame --incremental
+		open $fd, "-|", git_cmd(), "blame", "--incremental",
+			$hash_base, "--", $file_name
+			or die_error(500, "Open git-blame --incremental failed");
+	} else {
+		# run git-blame --porcelain
+		open $fd, "-|", git_cmd(), "blame", '-p',
+			$hash_base, '--', $file_name
+			or die_error(500, "Open git-blame --porcelain failed");
+	}
+
+	# incremental blame data returns early
+	if ($format eq 'data') {
+		print $cgi->header(
+			-type=>"text/plain", -charset => "utf-8",
+			-status=> "200 OK");
+		local $| = 1; # output autoflush
+		print while <$fd>;
+		close $fd
+			or print "ERROR $!\n";
+
+		print 'END';
+		if (defined $t0 && gitweb_check_feature('timed')) {
+			print ' '.
+			      Time::HiRes::tv_interval($t0, [Time::HiRes::gettimeofday()]).
+			      ' '.$number_of_git_cmds;
+		}
+		print "\n";
+
+		return;
+	}
+
+	# page header
+	git_header_html();
+	my $formats_nav =
+		$cgi->a({-href => href(action=>"blob", -replay=>1)},
+		        "blob") .
+		" | ";
+	if ($format eq 'incremental') {
+		$formats_nav .=
+			$cgi->a({-href => href(action=>"blame", javascript=>0, -replay=>1)},
+			        "blame") . " (non-incremental)";
+	} else {
+		$formats_nav .=
+			$cgi->a({-href => href(action=>"blame_incremental", -replay=>1)},
+			        "blame") . " (incremental)";
+	}
+	$formats_nav .=
+		" | " .
+		$cgi->a({-href => href(action=>"history", -replay=>1)},
+		        "history") .
+		" | " .
+		$cgi->a({-href => href(action=>$action, file_name=>$file_name)},
+		        "HEAD");
+	git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
+	git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
+	git_print_page_path($file_name, $ftype, $hash_base);
+
+	# page body
+	if ($format eq 'incremental') {
+		print "<noscript>\n<div class=\"error\"><center><b>\n".
+		      "This page requires JavaScript to run.\n Use ".
+		      $cgi->a({-href => href(action=>'blame',javascript=>0,-replay=>1)},
+		              'this page').
+		      " instead.\n".
+		      "</b></center></div>\n</noscript>\n";
+
+		print qq!<div id="progress_bar" style="width: 100%; background-color: yellow"></div>\n!;
+	}
+
+	print qq!<div class="page_body">\n!;
+	print qq!<div id="progress_info">... / ...</div>\n!
+		if ($format eq 'incremental');
+	print qq!<table id="blame_table" class="blame" width="100%">\n!.
+	      #qq!<col width="5.5em" /><col width="2.5em" /><col width="*" />\n!.
+	      qq!<thead>\n!.
+	      qq!<tr><th>Commit</th><th>Line</th><th>Data</th></tr>\n!.
+	      qq!</thead>\n!.
+	      qq!<tbody>\n!;
+
+	my @rev_color = qw(light dark);
+	my $num_colors = scalar(@rev_color);
+	my $current_color = 0;
+
+	if ($format eq 'incremental') {
+		my $color_class = $rev_color[$current_color];
+
+		#contents of a file
+		my $linenr = 0;
+	LINE:
+		while (my $line = <$fd>) {
+			chomp $line;
+			$linenr++;
+
+			print qq!<tr id="l$linenr" class="$color_class">!.
+			      qq!<td class="sha1"><a href=""> </a></td>!.
+			      qq!<td class="linenr">!.
+			      qq!<a class="linenr" href="">$linenr</a></td>!;
+			print qq!<td class="pre">! . esc_html($line) . "</td>\n";
+			print qq!</tr>\n!;
+		}
+
+	} else { # porcelain, i.e. ordinary blame
+		my %metainfo = (); # saves information about commits
+
+		# blame data
+	LINE:
+		while (my $line = <$fd>) {
+			chomp $line;
+			# the header: <SHA-1> <src lineno> <dst lineno> [<lines in group>]
+			# no <lines in group> for subsequent lines in group of lines
+			my ($full_rev, $orig_lineno, $lineno, $group_size) =
+			   ($line =~ /^([0-9a-f]{40}) (\d+) (\d+)(?: (\d+))?$/);
+			if (!exists $metainfo{$full_rev}) {
+				$metainfo{$full_rev} = { 'nprevious' => 0 };
+			}
+			my $meta = $metainfo{$full_rev};
+			my $data;
+			while ($data = <$fd>) {
+				chomp $data;
+				last if ($data =~ s/^\t//); # contents of line
+				if ($data =~ /^(\S+)(?: (.*))?$/) {
+					$meta->{$1} = $2 unless exists $meta->{$1};
+				}
+				if ($data =~ /^previous /) {
+					$meta->{'nprevious'}++;
+				}
+			}
+			my $short_rev = substr($full_rev, 0, 8);
+			my $author = $meta->{'author'};
+			my %date =
+				parse_date($meta->{'author-time'}, $meta->{'author-tz'});
+			my $date = $date{'iso-tz'};
+			if ($group_size) {
+				$current_color = ($current_color + 1) % $num_colors;
+			}
+			my $tr_class = $rev_color[$current_color];
+			$tr_class .= ' boundary' if (exists $meta->{'boundary'});
+			$tr_class .= ' no-previous' if ($meta->{'nprevious'} == 0);
+			$tr_class .= ' multiple-previous' if ($meta->{'nprevious'} > 1);
+			print "<tr id=\"l$lineno\" class=\"$tr_class\">\n";
+			if ($group_size) {
+				print "<td class=\"sha1\"";
+				print " title=\"". esc_html($author) . ", $date\"";
+				print " rowspan=\"$group_size\"" if ($group_size > 1);
+				print ">";
+				print $cgi->a({-href => href(action=>"commit",
+				                             hash=>$full_rev,
+				                             file_name=>$file_name)},
+				              esc_html($short_rev));
+				if ($group_size >= 2) {
+					my @author_initials = ($author =~ /\b([[:upper:]])\B/g);
+					if (@author_initials) {
+						print "<br />" .
+						      esc_html(join('', @author_initials));
+						#           or join('.', ...)
+					}
+				}
+				print "</td>\n";
+			}
+			# 'previous' <sha1 of parent commit> <filename at commit>
+			if (exists $meta->{'previous'} &&
+			    $meta->{'previous'} =~ /^([a-fA-F0-9]{40}) (.*)$/) {
+				$meta->{'parent'} = $1;
+				$meta->{'file_parent'} = unquote($2);
+			}
+			my $linenr_commit =
+				exists($meta->{'parent'}) ?
+				$meta->{'parent'} : $full_rev;
+			my $linenr_filename =
+				exists($meta->{'file_parent'}) ?
+				$meta->{'file_parent'} : unquote($meta->{'filename'});
+			my $blamed = href(action => 'blame',
+			                  file_name => $linenr_filename,
+			                  hash_base => $linenr_commit);
+			print "<td class=\"linenr\">";
+			print $cgi->a({ -href => "$blamed#l$orig_lineno",
+			                -class => "linenr" },
+			              esc_html($lineno));
+			print "</td>";
+			print "<td class=\"pre\">" . esc_html($data) . "</td>\n";
+			print "</tr>\n";
+		} # end while
+
+	}
+
+	# footer
+	print "</tbody>\n".
+	      "</table>\n"; # class="blame"
+	print "</div>\n";   # class="blame_body"
+	close $fd
+		or print "Reading blob failed\n";
+
+	git_footer_html();
+}
+
+sub git_blame {
+	git_blame_common();
+}
+
+sub git_blame_incremental {
+	git_blame_common('incremental');
+}
+
+sub git_blame_data {
+	git_blame_common('data');
+}
+
+sub git_tags {
+	my $head = git_get_head_hash($project);
+	git_header_html();
+	git_print_page_nav('','', $head,undef,$head);
+	git_print_header_div('summary', $project);
+
+	my @tagslist = git_get_tags_list();
+	if (@tagslist) {
+		git_tags_body(\@tagslist);
+	}
+	git_footer_html();
+}
+
+sub git_heads {
+	my $head = git_get_head_hash($project);
+	git_header_html();
+	git_print_page_nav('','', $head,undef,$head);
+	git_print_header_div('summary', $project);
+
+	my @headslist = git_get_heads_list();
+	if (@headslist) {
+		git_heads_body(\@headslist, $head);
+	}
+	git_footer_html();
+}
+
+sub git_blob_plain {
+	my $type = shift;
+	my $expires;
+
+	if (!defined $hash) {
+		if (defined $file_name) {
+			my $base = $hash_base || git_get_head_hash($project);
+			$hash = git_get_hash_by_path($base, $file_name, "blob")
+				or die_error(404, "Cannot find file");
+		} else {
+			die_error(400, "No file name defined");
+		}
+	} elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
+		# blobs defined by non-textual hash id's can be cached
+		$expires = "+1d";
+	}
+
+	open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
+		or die_error(500, "Open git-cat-file blob '$hash' failed");
+
+	# content-type (can include charset)
+	$type = blob_contenttype($fd, $file_name, $type);
+
+	# "save as" filename, even when no $file_name is given
+	my $save_as = "$hash";
+	if (defined $file_name) {
+		$save_as = $file_name;
+	} elsif ($type =~ m/^text\//) {
+		$save_as .= '.txt';
+	}
+
+	# With XSS prevention on, blobs of all types except a few known safe
+	# ones are served with "Content-Disposition: attachment" to make sure
+	# they don't run in our security domain.  For certain image types,
+	# blob view writes an <img> tag referring to blob_plain view, and we
+	# want to be sure not to break that by serving the image as an
+	# attachment (though Firefox 3 doesn't seem to care).
+	my $sandbox = $prevent_xss &&
+		$type !~ m!^(?:text/plain|image/(?:gif|png|jpeg))$!;
+
+	print $cgi->header(
+		-type => $type,
+		-expires => $expires,
+		-content_disposition =>
+			($sandbox ? 'attachment' : 'inline')
+			. '; filename="' . $save_as . '"');
+	local $/ = undef;
+	binmode STDOUT, ':raw';
+	print <$fd>;
+	binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
+	close $fd;
+}
+
+sub git_blob {
+	my $expires;
+
+	if (!defined $hash) {
+		if (defined $file_name) {
+			my $base = $hash_base || git_get_head_hash($project);
+			$hash = git_get_hash_by_path($base, $file_name, "blob")
+				or die_error(404, "Cannot find file");
+		} else {
+			die_error(400, "No file name defined");
+		}
+	} elsif ($hash =~ m/^[0-9a-fA-F]{40}$/) {
+		# blobs defined by non-textual hash id's can be cached
+		$expires = "+1d";
+	}
+
+	my $have_blame = gitweb_check_feature('blame');
+	open my $fd, "-|", git_cmd(), "cat-file", "blob", $hash
+		or die_error(500, "Couldn't cat $file_name, $hash");
+	my $mimetype = blob_mimetype($fd, $file_name);
+	# use 'blob_plain' (aka 'raw') view for files that cannot be displayed
+	if ($mimetype !~ m!^(?:text/|image/(?:gif|png|jpeg)$)! && -B $fd) {
+		close $fd;
+		return git_blob_plain($mimetype);
+	}
+	# we can have blame only for text/* mimetype
+	$have_blame &&= ($mimetype =~ m!^text/!);
+
+	my $highlight = gitweb_check_feature('highlight');
+	my $syntax = guess_file_syntax($highlight, $mimetype, $file_name);
+	$fd = run_highlighter($fd, $highlight, $syntax)
+		if $syntax;
+
+	git_header_html(undef, $expires);
+	my $formats_nav = '';
+	if (defined $hash_base && (my %co = parse_commit($hash_base))) {
+		if (defined $file_name) {
+			if ($have_blame) {
+				$formats_nav .=
+					$cgi->a({-href => href(action=>"blame", -replay=>1)},
+					        "blame") .
+					" | ";
+			}
+			$formats_nav .=
+				$cgi->a({-href => href(action=>"history", -replay=>1)},
+				        "history") .
+				" | " .
+				$cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
+				        "raw") .
+				" | " .
+				$cgi->a({-href => href(action=>"blob",
+				                       hash_base=>"HEAD", file_name=>$file_name)},
+				        "HEAD");
+		} else {
+			$formats_nav .=
+				$cgi->a({-href => href(action=>"blob_plain", -replay=>1)},
+				        "raw");
+		}
+		git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
+		git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
+	} else {
+		print "<div class=\"page_nav\">\n" .
+		      "<br/><br/></div>\n" .
+		      "<div class=\"title\">".esc_html($hash)."</div>\n";
+	}
+	git_print_page_path($file_name, "blob", $hash_base);
+	print "<div class=\"page_body\">\n";
+	if ($mimetype =~ m!^image/!) {
+		print qq!<img type="!.esc_attr($mimetype).qq!"!;
+		if ($file_name) {
+			print qq! alt="!.esc_attr($file_name).qq!" title="!.esc_attr($file_name).qq!"!;
+		}
+		print qq! src="! .
+		      href(action=>"blob_plain", hash=>$hash,
+		           hash_base=>$hash_base, file_name=>$file_name) .
+		      qq!" />\n!;
+	} else {
+		my $nr;
+		while (my $line = <$fd>) {
+			chomp $line;
+			$nr++;
+			$line = untabify($line);
+			printf qq!<div class="pre"><a id="l%i" href="%s#l%i" class="linenr">%4i</a> %s</div>\n!,
+			       $nr, esc_attr(href(-replay => 1)), $nr, $nr, $syntax ? $line : esc_html($line, -nbsp=>1);
+		}
+	}
+	close $fd
+		or print "Reading blob failed.\n";
+	print "</div>";
+	git_footer_html();
+}
+
+sub git_tree {
+	if (!defined $hash_base) {
+		$hash_base = "HEAD";
+	}
+	if (!defined $hash) {
+		if (defined $file_name) {
+			$hash = git_get_hash_by_path($hash_base, $file_name, "tree");
+		} else {
+			$hash = $hash_base;
+		}
+	}
+	die_error(404, "No such tree") unless defined($hash);
+
+	my $show_sizes = gitweb_check_feature('show-sizes');
+	my $have_blame = gitweb_check_feature('blame');
+
+	my @entries = ();
+	{
+		local $/ = "\0";
+		open my $fd, "-|", git_cmd(), "ls-tree", '-z',
+			($show_sizes ? '-l' : ()), @extra_options, $hash
+			or die_error(500, "Open git-ls-tree failed");
+		@entries = map { chomp; $_ } <$fd>;
+		close $fd
+			or die_error(404, "Reading tree failed");
+	}
+
+	my $refs = git_get_references();
+	my $ref = format_ref_marker($refs, $hash_base);
+	git_header_html();
+	my $basedir = '';
+	if (defined $hash_base && (my %co = parse_commit($hash_base))) {
+		my @views_nav = ();
+		if (defined $file_name) {
+			push @views_nav,
+				$cgi->a({-href => href(action=>"history", -replay=>1)},
+				        "history"),
+				$cgi->a({-href => href(action=>"tree",
+				                       hash_base=>"HEAD", file_name=>$file_name)},
+				        "HEAD"),
+		}
+		my $snapshot_links = format_snapshot_links($hash);
+		if (defined $snapshot_links) {
+			# FIXME: Should be available when we have no hash base as well.
+			push @views_nav, $snapshot_links;
+		}
+		git_print_page_nav('tree','', $hash_base, undef, undef,
+		                   join(' | ', @views_nav));
+		git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash_base);
+	} else {
+		undef $hash_base;
+		print "<div class=\"page_nav\">\n";
+		print "<br/><br/></div>\n";
+		print "<div class=\"title\">".esc_html($hash)."</div>\n";
+	}
+	if (defined $file_name) {
+		$basedir = $file_name;
+		if ($basedir ne '' && substr($basedir, -1) ne '/') {
+			$basedir .= '/';
+		}
+		git_print_page_path($file_name, 'tree', $hash_base);
+	}
+	print "<div class=\"page_body\">\n";
+	print "<table class=\"tree\">\n";
+	my $alternate = 1;
+	# '..' (top directory) link if possible
+	if (defined $hash_base &&
+	    defined $file_name && $file_name =~ m![^/]+$!) {
+		if ($alternate) {
+			print "<tr class=\"dark\">\n";
+		} else {
+			print "<tr class=\"light\">\n";
+		}
+		$alternate ^= 1;
+
+		my $up = $file_name;
+		$up =~ s!/?[^/]+$!!;
+		undef $up unless $up;
+		# based on git_print_tree_entry
+		print '<td class="mode">' . mode_str('040000') . "</td>\n";
+		print '<td class="size">&nbsp;</td>'."\n" if $show_sizes;
+		print '<td class="list">';
+		print $cgi->a({-href => href(action=>"tree",
+		                             hash_base=>$hash_base,
+		                             file_name=>$up)},
+		              "..");
+		print "</td>\n";
+		print "<td class=\"link\"></td>\n";
+
+		print "</tr>\n";
+	}
+	foreach my $line (@entries) {
+		my %t = parse_ls_tree_line($line, -z => 1, -l => $show_sizes);
+
+		if ($alternate) {
+			print "<tr class=\"dark\">\n";
+		} else {
+			print "<tr class=\"light\">\n";
+		}
+		$alternate ^= 1;
+
+		git_print_tree_entry(\%t, $basedir, $hash_base, $have_blame);
+
+		print "</tr>\n";
+	}
+	print "</table>\n" .
+	      "</div>";
+	git_footer_html();
+}
+
+sub snapshot_name {
+	my ($project, $hash) = @_;
+
+	# path/to/project.git  -> project
+	# path/to/project/.git -> project
+	my $name = to_utf8($project);
+	$name =~ s,([^/])/*\.git$,$1,;
+	$name = basename($name);
+	# sanitize name
+	$name =~ s/[[:cntrl:]]/?/g;
+
+	my $ver = $hash;
+	if ($hash =~ /^[0-9a-fA-F]+$/) {
+		# shorten SHA-1 hash
+		my $full_hash = git_get_full_hash($project, $hash);
+		if ($full_hash =~ /^$hash/ && length($hash) > 7) {
+			$ver = git_get_short_hash($project, $hash);
+		}
+	} elsif ($hash =~ m!^refs/tags/(.*)$!) {
+		# tags don't need shortened SHA-1 hash
+		$ver = $1;
+	} else {
+		# branches and other need shortened SHA-1 hash
+		if ($hash =~ m!^refs/(?:heads|remotes)/(.*)$!) {
+			$ver = $1;
+		}
+		$ver .= '-' . git_get_short_hash($project, $hash);
+	}
+	# in case of hierarchical branch names
+	$ver =~ s!/!.!g;
+
+	# name = project-version_string
+	$name = "$name-$ver";
+
+	return wantarray ? ($name, $name) : $name;
+}
+
+sub git_snapshot {
+	my $format = $input_params{'snapshot_format'};
+	if (!@snapshot_fmts) {
+		die_error(403, "Snapshots not allowed");
+	}
+	# default to first supported snapshot format
+	$format ||= $snapshot_fmts[0];
+	if ($format !~ m/^[a-z0-9]+$/) {
+		die_error(400, "Invalid snapshot format parameter");
+	} elsif (!exists($known_snapshot_formats{$format})) {
+		die_error(400, "Unknown snapshot format");
+	} elsif ($known_snapshot_formats{$format}{'disabled'}) {
+		die_error(403, "Snapshot format not allowed");
+	} elsif (!grep($_ eq $format, @snapshot_fmts)) {
+		die_error(403, "Unsupported snapshot format");
+	}
+
+	my $type = git_get_type("$hash^{}");
+	if (!$type) {
+		die_error(404, 'Object does not exist');
+	}  elsif ($type eq 'blob') {
+		die_error(400, 'Object is not a tree-ish');
+	}
+
+	my ($name, $prefix) = snapshot_name($project, $hash);
+	my $filename = "$name$known_snapshot_formats{$format}{'suffix'}";
+	my $cmd = quote_command(
+		git_cmd(), 'archive',
+		"--format=$known_snapshot_formats{$format}{'format'}",
+		"--prefix=$prefix/", $hash);
+	if (exists $known_snapshot_formats{$format}{'compressor'}) {
+		$cmd .= ' | ' . quote_command(@{$known_snapshot_formats{$format}{'compressor'}});
+	}
+
+	$filename =~ s/(["\\])/\\$1/g;
+	print $cgi->header(
+		-type => $known_snapshot_formats{$format}{'type'},
+		-content_disposition => 'inline; filename="' . $filename . '"',
+		-status => '200 OK');
+
+	open my $fd, "-|", $cmd
+		or die_error(500, "Execute git-archive failed");
+	binmode STDOUT, ':raw';
+	print <$fd>;
+	binmode STDOUT, ':utf8'; # as set at the beginning of gitweb.cgi
+	close $fd;
+}
+
+sub git_log_generic {
+	my ($fmt_name, $body_subr, $base, $parent, $file_name, $file_hash) = @_;
+
+	my $head = git_get_head_hash($project);
+	if (!defined $base) {
+		$base = $head;
+	}
+	if (!defined $page) {
+		$page = 0;
+	}
+	my $refs = git_get_references();
+
+	my $commit_hash = $base;
+	if (defined $parent) {
+		$commit_hash = "$parent..$base";
+	}
+	my @commitlist =
+		parse_commits($commit_hash, 101, (100 * $page),
+		              defined $file_name ? ($file_name, "--full-history") : ());
+
+	my $ftype;
+	if (!defined $file_hash && defined $file_name) {
+		# some commits could have deleted file in question,
+		# and not have it in tree, but one of them has to have it
+		for (my $i = 0; $i < @commitlist; $i++) {
+			$file_hash = git_get_hash_by_path($commitlist[$i]{'id'}, $file_name);
+			last if defined $file_hash;
+		}
+	}
+	if (defined $file_hash) {
+		$ftype = git_get_type($file_hash);
+	}
+	if (defined $file_name && !defined $ftype) {
+		die_error(500, "Unknown type of object");
+	}
+	my %co;
+	if (defined $file_name) {
+		%co = parse_commit($base)
+			or die_error(404, "Unknown commit object");
+	}
+
+
+	my $paging_nav = format_paging_nav($fmt_name, $page, $#commitlist >= 100);
+	my $next_link = '';
+	if ($#commitlist >= 100) {
+		$next_link =
+			$cgi->a({-href => href(-replay=>1, page=>$page+1),
+			         -accesskey => "n", -title => "Alt-n"}, "next");
+	}
+	my $patch_max = gitweb_get_feature('patches');
+	if ($patch_max && !defined $file_name) {
+		if ($patch_max < 0 || @commitlist <= $patch_max) {
+			$paging_nav .= " &sdot; " .
+				$cgi->a({-href => href(action=>"patches", -replay=>1)},
+					"patches");
+		}
+	}
+
+	git_header_html();
+	git_print_page_nav($fmt_name,'', $hash,$hash,$hash, $paging_nav);
+	if (defined $file_name) {
+		git_print_header_div('commit', esc_html($co{'title'}), $base);
+	} else {
+		git_print_header_div('summary', $project)
+	}
+	git_print_page_path($file_name, $ftype, $hash_base)
+		if (defined $file_name);
+
+	$body_subr->(\@commitlist, 0, 99, $refs, $next_link,
+	             $file_name, $file_hash, $ftype);
+
+	git_footer_html();
+}
+
+sub git_log {
+	git_log_generic('log', \&git_log_body,
+	                $hash, $hash_parent);
+}
+
+sub git_commit {
+	$hash ||= $hash_base || "HEAD";
+	my %co = parse_commit($hash)
+	    or die_error(404, "Unknown commit object");
+
+	my $parent  = $co{'parent'};
+	my $parents = $co{'parents'}; # listref
+
+	# we need to prepare $formats_nav before any parameter munging
+	my $formats_nav;
+	if (!defined $parent) {
+		# --root commitdiff
+		$formats_nav .= '(initial)';
+	} elsif (@$parents == 1) {
+		# single parent commit
+		$formats_nav .=
+			'(parent: ' .
+			$cgi->a({-href => href(action=>"commit",
+			                       hash=>$parent)},
+			        esc_html(substr($parent, 0, 7))) .
+			')';
+	} else {
+		# merge commit
+		$formats_nav .=
+			'(merge: ' .
+			join(' ', map {
+				$cgi->a({-href => href(action=>"commit",
+				                       hash=>$_)},
+				        esc_html(substr($_, 0, 7)));
+			} @$parents ) .
+			')';
+	}
+	if (gitweb_check_feature('patches') && @$parents <= 1) {
+		$formats_nav .= " | " .
+			$cgi->a({-href => href(action=>"patch", -replay=>1)},
+				"patch");
+	}
+
+	if (!defined $parent) {
+		$parent = "--root";
+	}
+	my @difftree;
+	open my $fd, "-|", git_cmd(), "diff-tree", '-r', "--no-commit-id",
+		@diff_opts,
+		(@$parents <= 1 ? $parent : '-c'),
+		$hash, "--"
+		or die_error(500, "Open git-diff-tree failed");
+	@difftree = map { chomp; $_ } <$fd>;
+	close $fd or die_error(404, "Reading git-diff-tree failed");
+
+	# non-textual hash id's can be cached
+	my $expires;
+	if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
+		$expires = "+1d";
+	}
+	my $refs = git_get_references();
+	my $ref = format_ref_marker($refs, $co{'id'});
+
+	git_header_html(undef, $expires);
+	git_print_page_nav('commit', '',
+	                   $hash, $co{'tree'}, $hash,
+	                   $formats_nav);
+
+	if (defined $co{'parent'}) {
+		git_print_header_div('commitdiff', esc_html($co{'title'}) . $ref, $hash);
+	} else {
+		git_print_header_div('tree', esc_html($co{'title'}) . $ref, $co{'tree'}, $hash);
+	}
+	print "<div class=\"title_text\">\n" .
+	      "<table class=\"object_header\">\n";
+	git_print_authorship_rows(\%co);
+	print "<tr><td>commit</td><td class=\"sha1\">$co{'id'}</td></tr>\n";
+	print "<tr>" .
+	      "<td>tree</td>" .
+	      "<td class=\"sha1\">" .
+	      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash),
+	               class => "list"}, $co{'tree'}) .
+	      "</td>" .
+	      "<td class=\"link\">" .
+	      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$hash)},
+	              "tree");
+	my $snapshot_links = format_snapshot_links($hash);
+	if (defined $snapshot_links) {
+		print " | " . $snapshot_links;
+	}
+	print "</td>" .
+	      "</tr>\n";
+
+	foreach my $par (@$parents) {
+		print "<tr>" .
+		      "<td>parent</td>" .
+		      "<td class=\"sha1\">" .
+		      $cgi->a({-href => href(action=>"commit", hash=>$par),
+		               class => "list"}, $par) .
+		      "</td>" .
+		      "<td class=\"link\">" .
+		      $cgi->a({-href => href(action=>"commit", hash=>$par)}, "commit") .
+		      " | " .
+		      $cgi->a({-href => href(action=>"commitdiff", hash=>$hash, hash_parent=>$par)}, "diff") .
+		      "</td>" .
+		      "</tr>\n";
+	}
+	print "</table>".
+	      "</div>\n";
+
+	print "<div class=\"page_body\">\n";
+	git_print_log($co{'comment'});
+	print "</div>\n";
+
+	git_difftree_body(\@difftree, $hash, @$parents);
+
+	git_footer_html();
+}
+
+sub git_object {
+	# object is defined by:
+	# - hash or hash_base alone
+	# - hash_base and file_name
+	my $type;
+
+	# - hash or hash_base alone
+	if ($hash || ($hash_base && !defined $file_name)) {
+		my $object_id = $hash || $hash_base;
+
+		open my $fd, "-|", quote_command(
+			git_cmd(), 'cat-file', '-t', $object_id) . ' 2> /dev/null'
+			or die_error(404, "Object does not exist");
+		$type = <$fd>;
+		chomp $type;
+		close $fd
+			or die_error(404, "Object does not exist");
+
+	# - hash_base and file_name
+	} elsif ($hash_base && defined $file_name) {
+		$file_name =~ s,/+$,,;
+
+		system(git_cmd(), "cat-file", '-e', $hash_base) == 0
+			or die_error(404, "Base object does not exist");
+
+		# here errors should not hapen
+		open my $fd, "-|", git_cmd(), "ls-tree", $hash_base, "--", $file_name
+			or die_error(500, "Open git-ls-tree failed");
+		my $line = <$fd>;
+		close $fd;
+
+		#'100644 blob 0fa3f3a66fb6a137f6ec2c19351ed4d807070ffa	panic.c'
+		unless ($line && $line =~ m/^([0-9]+) (.+) ([0-9a-fA-F]{40})\t/) {
+			die_error(404, "File or directory for given base does not exist");
+		}
+		$type = $2;
+		$hash = $3;
+	} else {
+		die_error(400, "Not enough information to find object");
+	}
+
+	print $cgi->redirect(-uri => href(action=>$type, -full=>1,
+	                                  hash=>$hash, hash_base=>$hash_base,
+	                                  file_name=>$file_name),
+	                     -status => '302 Found');
+}
+
+sub git_blobdiff {
+	my $format = shift || 'html';
+
+	my $fd;
+	my @difftree;
+	my %diffinfo;
+	my $expires;
+
+	# preparing $fd and %diffinfo for git_patchset_body
+	# new style URI
+	if (defined $hash_base && defined $hash_parent_base) {
+		if (defined $file_name) {
+			# read raw output
+			open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
+				$hash_parent_base, $hash_base,
+				"--", (defined $file_parent ? $file_parent : ()), $file_name
+				or die_error(500, "Open git-diff-tree failed");
+			@difftree = map { chomp; $_ } <$fd>;
+			close $fd
+				or die_error(404, "Reading git-diff-tree failed");
+			@difftree
+				or die_error(404, "Blob diff not found");
+
+		} elsif (defined $hash &&
+		         $hash =~ /[0-9a-fA-F]{40}/) {
+			# try to find filename from $hash
+
+			# read filtered raw output
+			open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
+				$hash_parent_base, $hash_base, "--"
+				or die_error(500, "Open git-diff-tree failed");
+			@difftree =
+				# ':100644 100644 03b21826... 3b93d5e7... M	ls-files.c'
+				# $hash == to_id
+				grep { /^:[0-7]{6} [0-7]{6} [0-9a-fA-F]{40} $hash/ }
+				map { chomp; $_ } <$fd>;
+			close $fd
+				or die_error(404, "Reading git-diff-tree failed");
+			@difftree
+				or die_error(404, "Blob diff not found");
+
+		} else {
+			die_error(400, "Missing one of the blob diff parameters");
+		}
+
+		if (@difftree > 1) {
+			die_error(400, "Ambiguous blob diff specification");
+		}
+
+		%diffinfo = parse_difftree_raw_line($difftree[0]);
+		$file_parent ||= $diffinfo{'from_file'} || $file_name;
+		$file_name   ||= $diffinfo{'to_file'};
+
+		$hash_parent ||= $diffinfo{'from_id'};
+		$hash        ||= $diffinfo{'to_id'};
+
+		# non-textual hash id's can be cached
+		if ($hash_base =~ m/^[0-9a-fA-F]{40}$/ &&
+		    $hash_parent_base =~ m/^[0-9a-fA-F]{40}$/) {
+			$expires = '+1d';
+		}
+
+		# open patch output
+		open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
+			'-p', ($format eq 'html' ? "--full-index" : ()),
+			$hash_parent_base, $hash_base,
+			"--", (defined $file_parent ? $file_parent : ()), $file_name
+			or die_error(500, "Open git-diff-tree failed");
+	}
+
+	# old/legacy style URI -- not generated anymore since 1.4.3.
+	if (!%diffinfo) {
+		die_error('404 Not Found', "Missing one of the blob diff parameters")
+	}
+
+	# header
+	if ($format eq 'html') {
+		my $formats_nav =
+			$cgi->a({-href => href(action=>"blobdiff_plain", -replay=>1)},
+			        "raw");
+		git_header_html(undef, $expires);
+		if (defined $hash_base && (my %co = parse_commit($hash_base))) {
+			git_print_page_nav('','', $hash_base,$co{'tree'},$hash_base, $formats_nav);
+			git_print_header_div('commit', esc_html($co{'title'}), $hash_base);
+		} else {
+			print "<div class=\"page_nav\"><br/>$formats_nav<br/></div>\n";
+			print "<div class=\"title\">".esc_html("$hash vs $hash_parent")."</div>\n";
+		}
+		if (defined $file_name) {
+			git_print_page_path($file_name, "blob", $hash_base);
+		} else {
+			print "<div class=\"page_path\"></div>\n";
+		}
+
+	} elsif ($format eq 'plain') {
+		print $cgi->header(
+			-type => 'text/plain',
+			-charset => 'utf-8',
+			-expires => $expires,
+			-content_disposition => 'inline; filename="' . "$file_name" . '.patch"');
+
+		print "X-Git-Url: " . $cgi->self_url() . "\n\n";
+
+	} else {
+		die_error(400, "Unknown blobdiff format");
+	}
+
+	# patch
+	if ($format eq 'html') {
+		print "<div class=\"page_body\">\n";
+
+		git_patchset_body($fd, [ \%diffinfo ], $hash_base, $hash_parent_base);
+		close $fd;
+
+		print "</div>\n"; # class="page_body"
+		git_footer_html();
+
+	} else {
+		while (my $line = <$fd>) {
+			$line =~ s!a/($hash|$hash_parent)!'a/'.esc_path($diffinfo{'from_file'})!eg;
+			$line =~ s!b/($hash|$hash_parent)!'b/'.esc_path($diffinfo{'to_file'})!eg;
+
+			print $line;
+
+			last if $line =~ m!^\+\+\+!;
+		}
+		local $/ = undef;
+		print <$fd>;
+		close $fd;
+	}
+}
+
+sub git_blobdiff_plain {
+	git_blobdiff('plain');
+}
+
+sub git_commitdiff {
+	my %params = @_;
+	my $format = $params{-format} || 'html';
+
+	my ($patch_max) = gitweb_get_feature('patches');
+	if ($format eq 'patch') {
+		die_error(403, "Patch view not allowed") unless $patch_max;
+	}
+
+	$hash ||= $hash_base || "HEAD";
+	my %co = parse_commit($hash)
+	    or die_error(404, "Unknown commit object");
+
+	# choose format for commitdiff for merge
+	if (! defined $hash_parent && @{$co{'parents'}} > 1) {
+		$hash_parent = '--cc';
+	}
+	# we need to prepare $formats_nav before almost any parameter munging
+	my $formats_nav;
+	if ($format eq 'html') {
+		$formats_nav =
+			$cgi->a({-href => href(action=>"commitdiff_plain", -replay=>1)},
+			        "raw");
+		if ($patch_max && @{$co{'parents'}} <= 1) {
+			$formats_nav .= " | " .
+				$cgi->a({-href => href(action=>"patch", -replay=>1)},
+					"patch");
+		}
+
+		if (defined $hash_parent &&
+		    $hash_parent ne '-c' && $hash_parent ne '--cc') {
+			# commitdiff with two commits given
+			my $hash_parent_short = $hash_parent;
+			if ($hash_parent =~ m/^[0-9a-fA-F]{40}$/) {
+				$hash_parent_short = substr($hash_parent, 0, 7);
+			}
+			$formats_nav .=
+				' (from';
+			for (my $i = 0; $i < @{$co{'parents'}}; $i++) {
+				if ($co{'parents'}[$i] eq $hash_parent) {
+					$formats_nav .= ' parent ' . ($i+1);
+					last;
+				}
+			}
+			$formats_nav .= ': ' .
+				$cgi->a({-href => href(action=>"commitdiff",
+				                       hash=>$hash_parent)},
+				        esc_html($hash_parent_short)) .
+				')';
+		} elsif (!$co{'parent'}) {
+			# --root commitdiff
+			$formats_nav .= ' (initial)';
+		} elsif (scalar @{$co{'parents'}} == 1) {
+			# single parent commit
+			$formats_nav .=
+				' (parent: ' .
+				$cgi->a({-href => href(action=>"commitdiff",
+				                       hash=>$co{'parent'})},
+				        esc_html(substr($co{'parent'}, 0, 7))) .
+				')';
+		} else {
+			# merge commit
+			if ($hash_parent eq '--cc') {
+				$formats_nav .= ' | ' .
+					$cgi->a({-href => href(action=>"commitdiff",
+					                       hash=>$hash, hash_parent=>'-c')},
+					        'combined');
+			} else { # $hash_parent eq '-c'
+				$formats_nav .= ' | ' .
+					$cgi->a({-href => href(action=>"commitdiff",
+					                       hash=>$hash, hash_parent=>'--cc')},
+					        'compact');
+			}
+			$formats_nav .=
+				' (merge: ' .
+				join(' ', map {
+					$cgi->a({-href => href(action=>"commitdiff",
+					                       hash=>$_)},
+					        esc_html(substr($_, 0, 7)));
+				} @{$co{'parents'}} ) .
+				')';
+		}
+	}
+
+	my $hash_parent_param = $hash_parent;
+	if (!defined $hash_parent_param) {
+		# --cc for multiple parents, --root for parentless
+		$hash_parent_param =
+			@{$co{'parents'}} > 1 ? '--cc' : $co{'parent'} || '--root';
+	}
+
+	# read commitdiff
+	my $fd;
+	my @difftree;
+	if ($format eq 'html') {
+		open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
+			"--no-commit-id", "--patch-with-raw", "--full-index",
+			$hash_parent_param, $hash, "--"
+			or die_error(500, "Open git-diff-tree failed");
+
+		while (my $line = <$fd>) {
+			chomp $line;
+			# empty line ends raw part of diff-tree output
+			last unless $line;
+			push @difftree, scalar parse_difftree_raw_line($line);
+		}
+
+	} elsif ($format eq 'plain') {
+		open $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
+			'-p', $hash_parent_param, $hash, "--"
+			or die_error(500, "Open git-diff-tree failed");
+	} elsif ($format eq 'patch') {
+		# For commit ranges, we limit the output to the number of
+		# patches specified in the 'patches' feature.
+		# For single commits, we limit the output to a single patch,
+		# diverging from the git-format-patch default.
+		my @commit_spec = ();
+		if ($hash_parent) {
+			if ($patch_max > 0) {
+				push @commit_spec, "-$patch_max";
+			}
+			push @commit_spec, '-n', "$hash_parent..$hash";
+		} else {
+			if ($params{-single}) {
+				push @commit_spec, '-1';
+			} else {
+				if ($patch_max > 0) {
+					push @commit_spec, "-$patch_max";
+				}
+				push @commit_spec, "-n";
+			}
+			push @commit_spec, '--root', $hash;
+		}
+		open $fd, "-|", git_cmd(), "format-patch", '--encoding=utf8',
+			'--stdout', @commit_spec
+			or die_error(500, "Open git-format-patch failed");
+	} else {
+		die_error(400, "Unknown commitdiff format");
+	}
+
+	# non-textual hash id's can be cached
+	my $expires;
+	if ($hash =~ m/^[0-9a-fA-F]{40}$/) {
+		$expires = "+1d";
+	}
+
+	# write commit message
+	if ($format eq 'html') {
+		my $refs = git_get_references();
+		my $ref = format_ref_marker($refs, $co{'id'});
+
+		git_header_html(undef, $expires);
+		git_print_page_nav('commitdiff','', $hash,$co{'tree'},$hash, $formats_nav);
+		git_print_header_div('commit', esc_html($co{'title'}) . $ref, $hash);
+		print "<div class=\"title_text\">\n" .
+		      "<table class=\"object_header\">\n";
+		git_print_authorship_rows(\%co);
+		print "</table>".
+		      "</div>\n";
+		print "<div class=\"page_body\">\n";
+		if (@{$co{'comment'}} > 1) {
+			print "<div class=\"log\">\n";
+			git_print_log($co{'comment'}, -final_empty_line=> 1, -remove_title => 1);
+			print "</div>\n"; # class="log"
+		}
+
+	} elsif ($format eq 'plain') {
+		my $refs = git_get_references("tags");
+		my $tagname = git_get_rev_name_tags($hash);
+		my $filename = basename($project) . "-$hash.patch";
+
+		print $cgi->header(
+			-type => 'text/plain',
+			-charset => 'utf-8',
+			-expires => $expires,
+			-content_disposition => 'inline; filename="' . "$filename" . '"');
+		my %ad = parse_date($co{'author_epoch'}, $co{'author_tz'});
+		print "From: " . to_utf8($co{'author'}) . "\n";
+		print "Date: $ad{'rfc2822'} ($ad{'tz_local'})\n";
+		print "Subject: " . to_utf8($co{'title'}) . "\n";
+
+		print "X-Git-Tag: $tagname\n" if $tagname;
+		print "X-Git-Url: " . $cgi->self_url() . "\n\n";
+
+		foreach my $line (@{$co{'comment'}}) {
+			print to_utf8($line) . "\n";
+		}
+		print "---\n\n";
+	} elsif ($format eq 'patch') {
+		my $filename = basename($project) . "-$hash.patch";
+
+		print $cgi->header(
+			-type => 'text/plain',
+			-charset => 'utf-8',
+			-expires => $expires,
+			-content_disposition => 'inline; filename="' . "$filename" . '"');
+	}
+
+	# write patch
+	if ($format eq 'html') {
+		my $use_parents = !defined $hash_parent ||
+			$hash_parent eq '-c' || $hash_parent eq '--cc';
+		git_difftree_body(\@difftree, $hash,
+		                  $use_parents ? @{$co{'parents'}} : $hash_parent);
+		print "<br/>\n";
+
+		git_patchset_body($fd, \@difftree, $hash,
+		                  $use_parents ? @{$co{'parents'}} : $hash_parent);
+		close $fd;
+		print "</div>\n"; # class="page_body"
+		git_footer_html();
+
+	} elsif ($format eq 'plain') {
+		local $/ = undef;
+		print <$fd>;
+		close $fd
+			or print "Reading git-diff-tree failed\n";
+	} elsif ($format eq 'patch') {
+		local $/ = undef;
+		print <$fd>;
+		close $fd
+			or print "Reading git-format-patch failed\n";
+	}
+}
+
+sub git_commitdiff_plain {
+	git_commitdiff(-format => 'plain');
+}
+
+# format-patch-style patches
+sub git_patch {
+	git_commitdiff(-format => 'patch', -single => 1);
+}
+
+sub git_patches {
+	git_commitdiff(-format => 'patch');
+}
+
+sub git_history {
+	git_log_generic('history', \&git_history_body,
+	                $hash_base, $hash_parent_base,
+	                $file_name, $hash);
+}
+
+sub git_search {
+	gitweb_check_feature('search') or die_error(403, "Search is disabled");
+	if (!defined $searchtext) {
+		die_error(400, "Text field is empty");
+	}
+	if (!defined $hash) {
+		$hash = git_get_head_hash($project);
+	}
+	my %co = parse_commit($hash);
+	if (!%co) {
+		die_error(404, "Unknown commit object");
+	}
+	if (!defined $page) {
+		$page = 0;
+	}
+
+	$searchtype ||= 'commit';
+	if ($searchtype eq 'pickaxe') {
+		# pickaxe may take all resources of your box and run for several minutes
+		# with every query - so decide by yourself how public you make this feature
+		gitweb_check_feature('pickaxe')
+		    or die_error(403, "Pickaxe is disabled");
+	}
+	if ($searchtype eq 'grep') {
+		gitweb_check_feature('grep')
+		    or die_error(403, "Grep is disabled");
+	}
+
+	git_header_html();
+
+	if ($searchtype eq 'commit' or $searchtype eq 'author' or $searchtype eq 'committer') {
+		my $greptype;
+		if ($searchtype eq 'commit') {
+			$greptype = "--grep=";
+		} elsif ($searchtype eq 'author') {
+			$greptype = "--author=";
+		} elsif ($searchtype eq 'committer') {
+			$greptype = "--committer=";
+		}
+		$greptype .= $searchtext;
+		my @commitlist = parse_commits($hash, 101, (100 * $page), undef,
+		                               $greptype, '--regexp-ignore-case',
+		                               $search_use_regexp ? '--extended-regexp' : '--fixed-strings');
+
+		my $paging_nav = '';
+		if ($page > 0) {
+			$paging_nav .=
+				$cgi->a({-href => href(action=>"search", hash=>$hash,
+				                       searchtext=>$searchtext,
+				                       searchtype=>$searchtype)},
+				        "first");
+			$paging_nav .= " &sdot; " .
+				$cgi->a({-href => href(-replay=>1, page=>$page-1),
+				         -accesskey => "p", -title => "Alt-p"}, "prev");
+		} else {
+			$paging_nav .= "first";
+			$paging_nav .= " &sdot; prev";
+		}
+		my $next_link = '';
+		if ($#commitlist >= 100) {
+			$next_link =
+				$cgi->a({-href => href(-replay=>1, page=>$page+1),
+				         -accesskey => "n", -title => "Alt-n"}, "next");
+			$paging_nav .= " &sdot; $next_link";
+		} else {
+			$paging_nav .= " &sdot; next";
+		}
+
+		git_print_page_nav('','', $hash,$co{'tree'},$hash, $paging_nav);
+		git_print_header_div('commit', esc_html($co{'title'}), $hash);
+		if ($page == 0 && !@commitlist) {
+			print "<p>No match.</p>\n";
+		} else {
+			git_search_grep_body(\@commitlist, 0, 99, $next_link);
+		}
+	}
+
+	if ($searchtype eq 'pickaxe') {
+		git_print_page_nav('','', $hash,$co{'tree'},$hash);
+		git_print_header_div('commit', esc_html($co{'title'}), $hash);
+
+		print "<table class=\"pickaxe search\">\n";
+		my $alternate = 1;
+		local $/ = "\n";
+		open my $fd, '-|', git_cmd(), '--no-pager', 'log', @diff_opts,
+			'--pretty=format:%H', '--no-abbrev', '--raw', "-S$searchtext",
+			($search_use_regexp ? '--pickaxe-regex' : ());
+		undef %co;
+		my @files;
+		while (my $line = <$fd>) {
+			chomp $line;
+			next unless $line;
+
+			my %set = parse_difftree_raw_line($line);
+			if (defined $set{'commit'}) {
+				# finish previous commit
+				if (%co) {
+					print "</td>\n" .
+					      "<td class=\"link\">" .
+					      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
+					      " | " .
+					      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
+					print "</td>\n" .
+					      "</tr>\n";
+				}
+
+				if ($alternate) {
+					print "<tr class=\"dark\">\n";
+				} else {
+					print "<tr class=\"light\">\n";
+				}
+				$alternate ^= 1;
+				%co = parse_commit($set{'commit'});
+				my $author = chop_and_escape_str($co{'author_name'}, 15, 5);
+				print "<td title=\"$co{'age_string_age'}\"><i>$co{'age_string_date'}</i></td>\n" .
+				      "<td><i>$author</i></td>\n" .
+				      "<td>" .
+				      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'}),
+				              -class => "list subject"},
+				              chop_and_escape_str($co{'title'}, 50) . "<br/>");
+			} elsif (defined $set{'to_id'}) {
+				next if ($set{'to_id'} =~ m/^0{40}$/);
+
+				print $cgi->a({-href => href(action=>"blob", hash_base=>$co{'id'},
+				                             hash=>$set{'to_id'}, file_name=>$set{'to_file'}),
+				              -class => "list"},
+				              "<span class=\"match\">" . esc_path($set{'file'}) . "</span>") .
+				      "<br/>\n";
+			}
+		}
+		close $fd;
+
+		# finish last commit (warning: repetition!)
+		if (%co) {
+			print "</td>\n" .
+			      "<td class=\"link\">" .
+			      $cgi->a({-href => href(action=>"commit", hash=>$co{'id'})}, "commit") .
+			      " | " .
+			      $cgi->a({-href => href(action=>"tree", hash=>$co{'tree'}, hash_base=>$co{'id'})}, "tree");
+			print "</td>\n" .
+			      "</tr>\n";
+		}
+
+		print "</table>\n";
+	}
+
+	if ($searchtype eq 'grep') {
+		git_print_page_nav('','', $hash,$co{'tree'},$hash);
+		git_print_header_div('commit', esc_html($co{'title'}), $hash);
+
+		print "<table class=\"grep_search\">\n";
+		my $alternate = 1;
+		my $matches = 0;
+		local $/ = "\n";
+		open my $fd, "-|", git_cmd(), 'grep', '-n',
+			$search_use_regexp ? ('-E', '-i') : '-F',
+			$searchtext, $co{'tree'};
+		my $lastfile = '';
+		while (my $line = <$fd>) {
+			chomp $line;
+			my ($file, $lno, $ltext, $binary);
+			last if ($matches++ > 1000);
+			if ($line =~ /^Binary file (.+) matches$/) {
+				$file = $1;
+				$binary = 1;
+			} else {
+				(undef, $file, $lno, $ltext) = split(/:/, $line, 4);
+			}
+			if ($file ne $lastfile) {
+				$lastfile and print "</td></tr>\n";
+				if ($alternate++) {
+					print "<tr class=\"dark\">\n";
+				} else {
+					print "<tr class=\"light\">\n";
+				}
+				print "<td class=\"list\">".
+					$cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
+							       file_name=>"$file"),
+						-class => "list"}, esc_path($file));
+				print "</td><td>\n";
+				$lastfile = $file;
+			}
+			if ($binary) {
+				print "<div class=\"binary\">Binary file</div>\n";
+			} else {
+				$ltext = untabify($ltext);
+				if ($ltext =~ m/^(.*)($search_regexp)(.*)$/i) {
+					$ltext = esc_html($1, -nbsp=>1);
+					$ltext .= '<span class="match">';
+					$ltext .= esc_html($2, -nbsp=>1);
+					$ltext .= '</span>';
+					$ltext .= esc_html($3, -nbsp=>1);
+				} else {
+					$ltext = esc_html($ltext, -nbsp=>1);
+				}
+				print "<div class=\"pre\">" .
+					$cgi->a({-href => href(action=>"blob", hash=>$co{'hash'},
+							       file_name=>"$file").'#l'.$lno,
+						-class => "linenr"}, sprintf('%4i', $lno))
+					. ' ' .  $ltext . "</div>\n";
+			}
+		}
+		if ($lastfile) {
+			print "</td></tr>\n";
+			if ($matches > 1000) {
+				print "<div class=\"diff nodifferences\">Too many matches, listing trimmed</div>\n";
+			}
+		} else {
+			print "<div class=\"diff nodifferences\">No matches found</div>\n";
+		}
+		close $fd;
+
+		print "</table>\n";
+	}
+	git_footer_html();
+}
+
+sub git_search_help {
+	git_header_html();
+	git_print_page_nav('','', $hash,$hash,$hash);
+	print <<EOT;
+<p><strong>Pattern</strong> is by default a normal string that is matched precisely (but without
+regard to case, except in the case of pickaxe). However, when you check the <em>re</em> checkbox,
+the pattern entered is recognized as the POSIX extended
+<a href="http://en.wikipedia.org/wiki/Regular_expression">regular expression</a> (also case
+insensitive).</p>
+<dl>
+<dt><b>commit</b></dt>
+<dd>The commit messages and authorship information will be scanned for the given pattern.</dd>
+EOT
+	my $have_grep = gitweb_check_feature('grep');
+	if ($have_grep) {
+		print <<EOT;
+<dt><b>grep</b></dt>
+<dd>All files in the currently selected tree (HEAD unless you are explicitly browsing
+    a different one) are searched for the given pattern. On large trees, this search can take
+a while and put some strain on the server, so please use it with some consideration. Note that
+due to git-grep peculiarity, currently if regexp mode is turned off, the matches are
+case-sensitive.</dd>
+EOT
+	}
+	print <<EOT;
+<dt><b>author</b></dt>
+<dd>Name and e-mail of the change author and date of birth of the patch will be scanned for the given pattern.</dd>
+<dt><b>committer</b></dt>
+<dd>Name and e-mail of the committer and date of commit will be scanned for the given pattern.</dd>
+EOT
+	my $have_pickaxe = gitweb_check_feature('pickaxe');
+	if ($have_pickaxe) {
+		print <<EOT;
+<dt><b>pickaxe</b></dt>
+<dd>All commits that caused the string to appear or disappear from any file (changes that
+added, removed or "modified" the string) will be listed. This search can take a while and
+takes a lot of strain on the server, so please use it wisely. Note that since you may be
+interested even in changes just changing the case as well, this search is case sensitive.</dd>
+EOT
+	}
+	print "</dl>\n";
+	git_footer_html();
+}
+
+sub git_shortlog {
+	git_log_generic('shortlog', \&git_shortlog_body,
+	                $hash, $hash_parent);
+}
+
+## ......................................................................
+## feeds (RSS, Atom; OPML)
+
+sub git_feed {
+	my $format = shift || 'atom';
+	my $have_blame = gitweb_check_feature('blame');
+
+	# Atom: http://www.atomenabled.org/developers/syndication/
+	# RSS:  http://www.notestips.com/80256B3A007F2692/1/NAMO5P9UPQ
+	if ($format ne 'rss' && $format ne 'atom') {
+		die_error(400, "Unknown web feed format");
+	}
+
+	# log/feed of current (HEAD) branch, log of given branch, history of file/directory
+	my $head = $hash || 'HEAD';
+	my @commitlist = parse_commits($head, 150, 0, $file_name);
+
+	my %latest_commit;
+	my %latest_date;
+	my $content_type = "application/$format+xml";
+	if (defined $cgi->http('HTTP_ACCEPT') &&
+		 $cgi->Accept('text/xml') > $cgi->Accept($content_type)) {
+		# browser (feed reader) prefers text/xml
+		$content_type = 'text/xml';
+	}
+	if (defined($commitlist[0])) {
+		%latest_commit = %{$commitlist[0]};
+		my $latest_epoch = $latest_commit{'committer_epoch'};
+		%latest_date   = parse_date($latest_epoch);
+		my $if_modified = $cgi->http('IF_MODIFIED_SINCE');
+		if (defined $if_modified) {
+			my $since;
+			if (eval { require HTTP::Date; 1; }) {
+				$since = HTTP::Date::str2time($if_modified);
+			} elsif (eval { require Time::ParseDate; 1; }) {
+				$since = Time::ParseDate::parsedate($if_modified, GMT => 1);
+			}
+			if (defined $since && $latest_epoch <= $since) {
+				print $cgi->header(
+					-type => $content_type,
+					-charset => 'utf-8',
+					-last_modified => $latest_date{'rfc2822'},
+					-status => '304 Not Modified');
+				return;
+			}
+		}
+		print $cgi->header(
+			-type => $content_type,
+			-charset => 'utf-8',
+			-last_modified => $latest_date{'rfc2822'});
+	} else {
+		print $cgi->header(
+			-type => $content_type,
+			-charset => 'utf-8');
+	}
+
+	# Optimization: skip generating the body if client asks only
+	# for Last-Modified date.
+	return if ($cgi->request_method() eq 'HEAD');
+
+	# header variables
+	my $title = "$site_name - $project/$action";
+	my $feed_type = 'log';
+	if (defined $hash) {
+		$title .= " - '$hash'";
+		$feed_type = 'branch log';
+		if (defined $file_name) {
+			$title .= " :: $file_name";
+			$feed_type = 'history';
+		}
+	} elsif (defined $file_name) {
+		$title .= " - $file_name";
+		$feed_type = 'history';
+	}
+	$title .= " $feed_type";
+	my $descr = git_get_project_description($project);
+	if (defined $descr) {
+		$descr = esc_html($descr);
+	} else {
+		$descr = "$project " .
+		         ($format eq 'rss' ? 'RSS' : 'Atom') .
+		         " feed";
+	}
+	my $owner = git_get_project_owner($project);
+	$owner = esc_html($owner);
+
+	#header
+	my $alt_url;
+	if (defined $file_name) {
+		$alt_url = href(-full=>1, action=>"history", hash=>$hash, file_name=>$file_name);
+	} elsif (defined $hash) {
+		$alt_url = href(-full=>1, action=>"log", hash=>$hash);
+	} else {
+		$alt_url = href(-full=>1, action=>"summary");
+	}
+	print qq!<?xml version="1.0" encoding="utf-8"?>\n!;
+	if ($format eq 'rss') {
+		print <<XML;
+<rss version="2.0" xmlns:content="http://purl.org/rss/1.0/modules/content/">
+<channel>
+XML
+		print "<title>$title</title>\n" .
+		      "<link>$alt_url</link>\n" .
+		      "<description>$descr</description>\n" .
+		      "<language>en</language>\n" .
+		      # project owner is responsible for 'editorial' content
+		      "<managingEditor>$owner</managingEditor>\n";
+		if (defined $logo || defined $favicon) {
+			# prefer the logo to the favicon, since RSS
+			# doesn't allow both
+			my $img = esc_url($logo || $favicon);
+			print "<image>\n" .
+			      "<url>$img</url>\n" .
+			      "<title>$title</title>\n" .
+			      "<link>$alt_url</link>\n" .
+			      "</image>\n";
+		}
+		if (%latest_date) {
+			print "<pubDate>$latest_date{'rfc2822'}</pubDate>\n";
+			print "<lastBuildDate>$latest_date{'rfc2822'}</lastBuildDate>\n";
+		}
+		print "<generator>gitweb v.$version/$git_version</generator>\n";
+	} elsif ($format eq 'atom') {
+		print <<XML;
+<feed xmlns="http://www.w3.org/2005/Atom">
+XML
+		print "<title>$title</title>\n" .
+		      "<subtitle>$descr</subtitle>\n" .
+		      '<link rel="alternate" type="text/html" href="' .
+		      $alt_url . '" />' . "\n" .
+		      '<link rel="self" type="' . $content_type . '" href="' .
+		      $cgi->self_url() . '" />' . "\n" .
+		      "<id>" . href(-full=>1) . "</id>\n" .
+		      # use project owner for feed author
+		      "<author><name>$owner</name></author>\n";
+		if (defined $favicon) {
+			print "<icon>" . esc_url($favicon) . "</icon>\n";
+		}
+		if (defined $logo) {
+			# not twice as wide as tall: 72 x 27 pixels
+			print "<logo>" . esc_url($logo) . "</logo>\n";
+		}
+		if (! %latest_date) {
+			# dummy date to keep the feed valid until commits trickle in:
+			print "<updated>1970-01-01T00:00:00Z</updated>\n";
+		} else {
+			print "<updated>$latest_date{'iso-8601'}</updated>\n";
+		}
+		print "<generator version='$version/$git_version'>gitweb</generator>\n";
+	}
+
+	# contents
+	for (my $i = 0; $i <= $#commitlist; $i++) {
+		my %co = %{$commitlist[$i]};
+		my $commit = $co{'id'};
+		# we read 150, we always show 30 and the ones more recent than 48 hours
+		if (($i >= 20) && ((time - $co{'author_epoch'}) > 48*60*60)) {
+			last;
+		}
+		my %cd = parse_date($co{'author_epoch'});
+
+		# get list of changed files
+		open my $fd, "-|", git_cmd(), "diff-tree", '-r', @diff_opts,
+			$co{'parent'} || "--root",
+			$co{'id'}, "--", (defined $file_name ? $file_name : ())
+			or next;
+		my @difftree = map { chomp; $_ } <$fd>;
+		close $fd
+			or next;
+
+		# print element (entry, item)
+		my $co_url = href(-full=>1, action=>"commitdiff", hash=>$commit);
+		if ($format eq 'rss') {
+			print "<item>\n" .
+			      "<title>" . esc_html($co{'title'}) . "</title>\n" .
+			      "<author>" . esc_html($co{'author'}) . "</author>\n" .
+			      "<pubDate>$cd{'rfc2822'}</pubDate>\n" .
+			      "<guid isPermaLink=\"true\">$co_url</guid>\n" .
+			      "<link>$co_url</link>\n" .
+			      "<description>" . esc_html($co{'title'}) . "</description>\n" .
+			      "<content:encoded>" .
+			      "<![CDATA[\n";
+		} elsif ($format eq 'atom') {
+			print "<entry>\n" .
+			      "<title type=\"html\">" . esc_html($co{'title'}) . "</title>\n" .
+			      "<updated>$cd{'iso-8601'}</updated>\n" .
+			      "<author>\n" .
+			      "  <name>" . esc_html($co{'author_name'}) . "</name>\n";
+			if ($co{'author_email'}) {
+				print "  <email>" . esc_html($co{'author_email'}) . "</email>\n";
+			}
+			print "</author>\n" .
+			      # use committer for contributor
+			      "<contributor>\n" .
+			      "  <name>" . esc_html($co{'committer_name'}) . "</name>\n";
+			if ($co{'committer_email'}) {
+				print "  <email>" . esc_html($co{'committer_email'}) . "</email>\n";
+			}
+			print "</contributor>\n" .
+			      "<published>$cd{'iso-8601'}</published>\n" .
+			      "<link rel=\"alternate\" type=\"text/html\" href=\"$co_url\" />\n" .
+			      "<id>$co_url</id>\n" .
+			      "<content type=\"xhtml\" xml:base=\"" . esc_url($my_url) . "\">\n" .
+			      "<div xmlns=\"http://www.w3.org/1999/xhtml\">\n";
+		}
+		my $comment = $co{'comment'};
+		print "<pre>\n";
+		foreach my $line (@$comment) {
+			$line = esc_html($line);
+			print "$line\n";
+		}
+		print "</pre><ul>\n";
+		foreach my $difftree_line (@difftree) {
+			my %difftree = parse_difftree_raw_line($difftree_line);
+			next if !$difftree{'from_id'};
+
+			my $file = $difftree{'file'} || $difftree{'to_file'};
+
+			print "<li>" .
+			      "[" .
+			      $cgi->a({-href => href(-full=>1, action=>"blobdiff",
+			                             hash=>$difftree{'to_id'}, hash_parent=>$difftree{'from_id'},
+			                             hash_base=>$co{'id'}, hash_parent_base=>$co{'parent'},
+			                             file_name=>$file, file_parent=>$difftree{'from_file'}),
+			              -title => "diff"}, 'D');
+			if ($have_blame) {
+				print $cgi->a({-href => href(-full=>1, action=>"blame",
+				                             file_name=>$file, hash_base=>$commit),
+				              -title => "blame"}, 'B');
+			}
+			# if this is not a feed of a file history
+			if (!defined $file_name || $file_name ne $file) {
+				print $cgi->a({-href => href(-full=>1, action=>"history",
+				                             file_name=>$file, hash=>$commit),
+				              -title => "history"}, 'H');
+			}
+			$file = esc_path($file);
+			print "] ".
+			      "$file</li>\n";
+		}
+		if ($format eq 'rss') {
+			print "</ul>]]>\n" .
+			      "</content:encoded>\n" .
+			      "</item>\n";
+		} elsif ($format eq 'atom') {
+			print "</ul>\n</div>\n" .
+			      "</content>\n" .
+			      "</entry>\n";
+		}
+	}
+
+	# end of feed
+	if ($format eq 'rss') {
+		print "</channel>\n</rss>\n";
+	} elsif ($format eq 'atom') {
+		print "</feed>\n";
+	}
+}
+
+sub git_rss {
+	git_feed('rss');
+}
+
+sub git_atom {
+	git_feed('atom');
+}
+
+sub git_opml {
+	my @list = git_get_projects_list();
+
+	print $cgi->header(
+		-type => 'text/xml',
+		-charset => 'utf-8',
+		-content_disposition => 'inline; filename="opml.xml"');
+
+	print <<XML;
+<?xml version="1.0" encoding="utf-8"?>
+<opml version="1.0">
+<head>
+  <title>$site_name OPML Export</title>
+</head>
+<body>
+<outline text="git RSS feeds">
+XML
+
+	foreach my $pr (@list) {
+		my %proj = %$pr;
+		my $head = git_get_head_hash($proj{'path'});
+		if (!defined $head) {
+			next;
+		}
+		$git_dir = "$projectroot/$proj{'path'}";
+		my %co = parse_commit($head);
+		if (!%co) {
+			next;
+		}
+
+		my $path = esc_html(chop_str($proj{'path'}, 25, 5));
+		my $rss  = href('project' => $proj{'path'}, 'action' => 'rss', -full => 1);
+		my $html = href('project' => $proj{'path'}, 'action' => 'summary', -full => 1);
+		print "<outline type=\"rss\" text=\"$path\" title=\"$path\" xmlUrl=\"$rss\" htmlUrl=\"$html\"/>\n";
+	}
+	print <<XML;
+</outline>
+</body>
+</opml>
+XML
+}
diff --git a/manifests/init.pp b/manifests/init.pp
index 1d7fd82..0a73883 100644
--- a/manifests/init.pp
+++ b/manifests/init.pp
@@ -9,11 +9,7 @@
 #   - gitweb::settings
 # Sample Usage:
 #   include gitweb
-class gitweb($site_alias, $doc_root, $project_root, $projects_list) {
-
-  package { "gitweb":
-    ensure  => present,
-  }
+class gitweb($site_alias, $doc_root, $project_root, $projects_list, $ssl = true) {
 
   file { "/etc/gitweb.conf":
     ensure  => present,
@@ -21,7 +17,6 @@ class gitweb($site_alias, $doc_root, $project_root, $projects_list) {
     group   => "root",
     mode    => "0644",
     content => template("gitweb/gitweb.conf.erb"),
-    require => Package["gitweb"],
   }
 
   file { $doc_root: