1 files changed, 205 insertions, 0 deletions
diff --git a/share/www/script/couch.js b/share/www/script/couch.js
new file mode 100644
index 00000000..9815882a
--- /dev/null
+++ b/share/www/script/couch.js
@@ -0,0 +1,205 @@
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not
+// use this file except in compliance with the License.  You may obtain a copy
+// of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+// License for the specific language governing permissions and limitations under
+// the License.
+
+// A simple class to represent a database. Uses XMLHttpRequest to interface with
+// the CouchDB server.
+
+function CouchDB(name) {
+  this.name = name
+  this.uri = "/" + encodeURIComponent(name) + "/";
+  request = CouchDB.request;
+
+  // Creates the database on the server
+  this.createDb = function() {
+    var req = request("PUT", this.uri);
+    var result = JSON.parse(req.responseText);
+    if (req.status != 201)
+      throw result;
+    return result;
+  }
+
+  // Deletes the database on the server
+  this.deleteDb = function() {
+    var req = request("DELETE", this.uri);
+    if (req.status == 404)
+      return false;
+    var result = JSON.parse(req.responseText);
+    if (req.status != 202)
+      throw result;
+    return result;
+  }
+
+  // Save a document to the database
+  this.save = function(doc, options) {
+    var req;
+    if (doc._id == undefined)
+      req = request("POST", this.uri + encodeOptions(options), {
+        body: JSON.stringify(doc)
+      });
+    else
+      req = request("PUT", this.uri  + encodeURIComponent(doc._id) + encodeOptions(options), {
+        body: JSON.stringify(doc)
+      });
+    var result = JSON.parse(req.responseText);
+    if (req.status != 201)
+      throw result;
+    // set the _id and _rev members on the input object, for caller convenience.
+    doc._id = result.id;
+    doc._rev = result.rev;
+    return result;
+  }
+
+  // Open a document from the database
+  this.open = function(docId, options) {
+    var req = request("GET", this.uri + encodeURIComponent(docId) + encodeOptions(options));
+    if (req.status == 404)
+      return null;
+    var result = JSON.parse(req.responseText);
+    if (req.status != 200)
+      throw result;
+    return result;
+  }
+
+  // Deletes a document from the database
+  this.deleteDoc = function(doc) {
+    var req = request("DELETE", this.uri + encodeURIComponent(doc._id) + "?rev=" + doc._rev);
+    var result = JSON.parse(req.responseText);
+    if (req.status != 202)
+      throw result;
+    doc._rev = result.rev; //record rev in input document
+    doc._deleted = true;
+    return result;
+  }
+
+  this.bulkSave = function(docs, options) {
+    var req = request("POST", this.uri + "_bulk_docs" + encodeOptions(options), {
+      body: JSON.stringify({"docs": docs})
+    });
+    var result = JSON.parse(req.responseText);
+    if (req.status != 201)
+      throw result;
+    return result;
+  }
+
+  // Applies the map function to the contents of database and returns the results.
+  this.query = function(mapFun, options) {
+    if (typeof(mapFun) != "string")
+      mapFun = mapFun.toSource ? mapFun.toSource() : "(" + mapFun.toString() + ")";
+    var req = request("POST", this.uri + "_temp_view" + encodeOptions(options), {
+      headers: {"Content-Type": "text/javascript"},
+      body: mapFun
+    });
+    var result = JSON.parse(req.responseText);
+    if (req.status != 200)
+      throw result;
+    return result;
+  }
+
+  this.view = function(viewname, options) {
+    var req = request("GET", this.uri + "_view/" + viewname + encodeOptions(options));
+    if (req.status == 404)
+      return null;
+    var result = JSON.parse(req.responseText);
+    if (req.status != 200)
+      throw result;
+    return result;
+  }
+
+  // gets information about the database
+  this.info = function() {
+    var req = request("GET", this.uri);
+    var result = JSON.parse(req.responseText);
+    if (req.status != 200)
+      throw result;
+    return result;
+  }
+
+  this.allDocs = function(options) {
+    var req = request("GET", this.uri + "_all_docs" + encodeOptions(options));
+    var result = JSON.parse(req.responseText);
+    if (req.status != 200)
+      throw result;
+    return result;
+  }
+
+  // Convert a options object to an url query string.
+  // ex: {key:'value',key2:'value2'} becomes '?key="value"&key2="value2"'
+  function encodeOptions(options) {
+    var buf = []
+    if (typeof(options) == "object" && options !== null) {
+      for (var name in options) {
+        if (!options.hasOwnProperty(name)) continue;
+        var value = options[name];
+        if (name == "key" || name == "startkey" || name == "endkey") {
+          value = toJSON(value);
+        }
+        buf.push(encodeURIComponent(name) + "=" + encodeURIComponent(value));
+      }
+    }
+    if (!buf.length) {
+      return "";
+    }
+    return "?" + buf.join("&");
+  }
+
+  function toJSON(obj) {
+    return obj !== null ? JSON.stringify(obj) : null;
+  }
+}
+
+CouchDB.allDbs = function() {
+  var req = CouchDB.request("GET", "/_all_dbs");
+  var result = JSON.parse(req.responseText);
+  if (req.status != 200)
+    throw result;
+  return result;
+}
+
+CouchDB.getVersion = function() {
+  var req = CouchDB.request("GET", "/");
+  var result = JSON.parse(req.responseText);
+  if (req.status != 200)
+    throw result;
+  return result.version;
+}
+
+CouchDB.replicate = function(source, target) {
+  var req = CouchDB.request("POST", "/_replicate", {
+    body: JSON.stringify({source: source, target: target})
+  });
+  var result = JSON.parse(req.responseText);
+  if (req.status != 200)
+    throw result;
+  return result;
+}
+
+CouchDB.request = function(method, uri, options) {
+  options = options || {};
+  var req = null;
+  if (typeof(XMLHttpRequest) != "undefined") {
+    req = new XMLHttpRequest();
+  } else if (typeof(ActiveXObject) != "undefined") {
+    req = new ActiveXObject("Microsoft.XMLHTTP");
+  } else {
+    throw new Error("No XMLHTTPRequest support detected");
+  }
+  req.open(method, uri, false);
+  if (options.headers) {
+    var headers = options.headers;
+    for (var headerName in headers) {
+      if (!headers.hasOwnProperty(headerName)) continue;
+      req.setRequestHeader(headerName, headers[headerName]);
+    }
+  }
+  req.send(options.body || null);
+  return req;
+}