Add a quick and dirty thandy-client json2xml command. I am going to regret this someday.

git-svn-id: file:///home/or/svnrepo/updater/trunk@17366 55e972cd-5a19-0410-ae62-a4d7a52db4cd

1 files changed, 70 insertions, 0 deletions

diff --git a/lib/thandy/encodeToXML.py b/lib/thandy/encodeToXML.py
new file mode 100644
index 0000000..4387c88
--- /dev/null
+++ b/lib/thandy/encodeToXML.py
@@ -0,0 +1,70 @@
+# Copyright 2008 The Tor Project, Inc.  See LICENSE for licensing information.
+
+import re
+
+def xml_str_encoder(s):
+    s = s.replace("&", "&")
+    s = s.replace("<", "&lt;")
+    s = s.replace(">", "&gt;")
+    return s
+
+def isAsciiName(s):
+    """
+       Return true iff s is pure-ascii, and a syntactically valid XML name.
+
+       >>> isAsciiName("a")
+       True
+       >>> isAsciiName("ab.-dc")
+       True
+       >>> isAsciiName("")
+       False
+       >>> isAsciiName(".foo")
+       False
+    """
+    return re.match(r'^[A-Za-z\_\:][A-Za-z0-9\_\:\-\.]*$', s) != None
+
+def _encodeToXML(obj, outf, indent=0):
+    if isinstance(obj, basestring):
+        outf(xml_str_encoder(obj))
+    elif obj is True:
+        outf("true")
+    elif obj is False:
+        outf("false")
+    elif obj is None:
+        outf("null")
+    elif isinstance(obj, (int,long)):
+        outf(str(obj))
+    elif isinstance(obj, (tuple, list)):
+        istr = " "*indent
+        outf("<list>\n")
+        for item in obj:
+            outf("<item>")
+            _encodeToXML(item, outf)
+            outf("</item> ")
+        outf("</list>\n")
+    elif isinstance(obj, dict):
+        outf("<dict>\n")
+        for k,v in sorted(obj.items()):
+            isAscii = isAsciiName(k)
+            if isAscii:
+                outf("<%s>"%k)
+                _encodeToXML(v, outf)
+                outf("</%s>\n"%k)
+            else:
+                outf("<dict-entry><key>%s</key><val>"%xml_str_encoder(k))
+                _encodeToXML(v, outf)
+                outf("</val></dict-entry>\n")
+        outf("</dict>\n")
+    else:
+        raise thandy.FormatException("I can't encode %r"%obj)
+
+def encodeToXML(obj, outf=None):
+    """Convert a json-encodable object to a quick-and-dirty XML equivalent."""
+    result = None
+    if outf == None:
+        outf = result.append
+
+    _encodeToXML(obj, outf)
+    if result is not None:
+        return "".join(result)
+