1 files changed, 45 insertions, 0 deletions
diff --git a/Demo/xml/roundtrip.py b/Demo/xml/roundtrip.py
new file mode 100644
index 0000000000..e42bf1b3c7
--- /dev/null
+++ b/Demo/xml/roundtrip.py
@@ -0,0 +1,45 @@
+"""
+A simple demo that reads in an XML document and spits out an equivalent,
+but not necessarily identical, document.
+"""
+
+import sys, string
+
+from xml.sax import saxutils, handler, make_parser
+
+# --- The ContentHandler
+
+class ContentGenerator(handler.ContentHandler):
+
+    def __init__(self, out = sys.stdout):
+        handler.ContentHandler.__init__(self)
+        self._out = out
+
+    # ContentHandler methods
+        
+    def startDocument(self):
+        self._out.write('<?xml version="1.0" encoding="iso-8859-1"?>\n')
+
+    def startElement(self, name, attrs):
+        self._out.write('<' + name)
+        for (name, value) in attrs.items():
+            self._out.write(' %s="%s"' % (name, saxutils.escape(value)))
+        self._out.write('>')
+
+    def endElement(self, name):
+        self._out.write('</%s>' % name)
+
+    def characters(self, content):
+        self._out.write(saxutils.escape(content))
+
+    def ignorableWhitespace(self, content):
+        self._out.write(content)
+        
+    def processingInstruction(self, target, data):
+        self._out.write('<?%s %s?>' % (target, data))
+
+# --- The main program
+
+parser = make_parser()
+parser.setContentHandler(ContentGenerator())
+parser.parse(sys.argv[1])