Work for Issue #66

thirdparty/prettyprint/prettyprint.py

@@ -0,0 +1,97 @@
+#!/usr/bin/env python
+
+#Copyright (c) 2010, Chris Hall <chris.hall@mod10.net>
+#All rights reserved.
+
+#Redistribution and use in source and binary forms, with or without modification,
+#are permitted provided that the following conditions are met:
+
+#* Redistributions of source code must retain the above copyright notice,
+#this list of conditions and the following disclaimer.
+#* Redistributions in binary form must reproduce the above copyright notice,
+#this list of conditions and the following disclaimer in the documentation
+#and/or other materials provided with the distribution.
+
+#THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+#ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+#WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+#DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+#ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+#(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+#LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+#ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+#(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+#SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+from xml.dom import minidom
+from xml.dom import Node
+
+def format(text):
+        doc = minidom.parseString(text)
+        root = doc.childNodes[0]
+        return root.toprettyxml(indent='  ')
+
+def formatXML(doc, encoding=None):
+        root = doc.childNodes[0]
+        return root.toprettyxml(indent='  ', encoding=encoding)
+
+def _patch_minidom():
+        minidom.Text.writexml = _writexml_text
+        minidom.Element.writexml = _writexml_element
+        minidom.Node.toprettyxml = _toprettyxml_node
+
+def _collapse(node):
+        for child in node.childNodes:
+                if child.nodeType == Node.TEXT_NODE and len(child.data.strip()) == 0:
+                        child.data = ''
+                else:
+                        _collapse(child)
+
+def _writexml_text(self, writer, indent="", addindent="", newl=""):
+        minidom._write_data(writer, "%s"%(self.data.strip()))
+
+def _writexml_element(self, writer, indent="", addindent="", newl=""):
+        # indent = current indentation
+        # addindent = indentation to add to higher levels
+        # newl = newline string
+        writer.write(indent+"<" + self.tagName)
+
+        attrs = self._get_attributes()
+        a_names = attrs.keys()
+        a_names.sort()
+
+        for a_name in a_names:
+                writer.write(" %s=\"" % a_name)
+                minidom._write_data(writer, attrs[a_name].value)
+                writer.write("\"")
+        if self.childNodes:
+                if self.childNodes[0].nodeType == Node.TEXT_NODE and len(self.childNodes[0].data) > 0:
+                        writer.write(">")
+                else:
+                        writer.write(">%s"%(newl))
+                for node in self.childNodes:
+                        node.writexml(writer,indent+addindent,addindent,newl)
+                if self.childNodes[-1].nodeType == Node.TEXT_NODE and len(self.childNodes[0].data) > 0:
+                        writer.write("</%s>%s" % (self.tagName,newl))
+                else:
+                        writer.write("%s</%s>%s" % (indent,self.tagName,newl))
+        else:
+                writer.write("/>%s"%(newl))
+
+def _toprettyxml_node(self, indent="\t", newl="\n", encoding = None):
+        _collapse(self)
+        # indent = the indentation string to prepend, per level
+        # newl = the newline string to append
+        writer = minidom._get_StringIO()
+        if encoding is not None:
+                import codecs
+                # Can't use codecs.getwriter to preserve 2.0 compatibility
+                writer = codecs.lookup(encoding)[3](writer)
+        if self.nodeType == Node.DOCUMENT_NODE:
+                # Can pass encoding only to document, to put it into XML header
+                self.writexml(writer, "", indent, newl, encoding)
+        else:
+                self.writexml(writer, "", indent, newl)
+        return writer.getvalue()
+
+_patch_minidom()