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xmlom.py
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xmlom.py
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import xml.dom.minidom as minidom
import xmlElement
__license__ = """
Copyright (c) 2014, IDPF, Will Manis
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
2. 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.
3. Neither the name of the copyright holder nor the names of its contributors
may be used to endorse or promote products derived from this software without
specific prior written permission.
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 OWNER 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.
"""
#-----------------------------------------------------------------
def findChildrenByTagName(node, tagname):
children = []
if node.nodeType == node.ELEMENT_NODE:
for child in node.childNodes:
if child.nodeType == node.ELEMENT_NODE and child.localName == tagname:
children.append(child)
return children
class XMLOM:
def __init__(self, xmltext):
self.dom_ = minidom.parseString(xmltext)
#-----------------------------------------------------------------
def getRootElement(self):
for child in self.dom_.childNodes:
if child.nodeType == child.ELEMENT_NODE:
return child
return self.dom_
#-----------------------------------------------------------------
def findByID(self, elementid):
def walk(node, elementid):
if node.attributes != None:
for attr in node.attributes.values():
if attr.name == 'id' and attr.value == elementid:
return node
for child in node.childNodes:
if child.nodeType == node.ELEMENT_NODE:
id = walk(child, elementid)
if id != None:
return id
return None
return walk(self.dom_.documentElement, elementid)
#-----------------------------------------------------------------
def findChildrenByTagName(self, node, tagname):
return findChildrenByTagName(node, tagname)
#-----------------------------------------------------------------
def findAllByTagName(self, tagname):
def walk(node, tagname, found):
if node.nodeType == minidom.Element.ELEMENT_NODE:
if node.localName == tagname:
found.append(node)
for child in node.childNodes:
walk(child, tagname, found)
found = []
walk(self.dom_.documentElement, tagname, found)
return found
#-----------------------------------------------------------------
def setAttribute(self, node, name, value):
xmlElement.setAttribute(node, name, value)
#-----------------------------------------------------------------
def getAttribute(self, node, name):
return xmlElement.getAttributeValue(node, name)
#-----------------------------------------------------------------
def getAttributes(self, node):
return xmlElement.getAttributes(node)
#-----------------------------------------------------------------
def addChild(self, parent, tagname, attrs=None, ns=None):
return xmlElement.addChildElement(parent, tagname, attrs, ns)
#-----------------------------------------------------------------
def addTextNode(self, parent, text):
return xmlElement.addTextNode(parent, text)
#-----------------------------------------------------------------
def addComment(self, parent, data):
return xmlElement.addComment(parent, data)
#-----------------------------------------------------------------
def getText(self, node):
return xmlElement.getText(node)
#-----------------------------------------------------------------
def removeNode(self, node):
xmlElement.removeNode(node)
#-----------------------------------------------------------------
def toPrettyXML(self):
lines = self.dom_.toprettyxml()
lines = lines.split('\n')
trimmedlines = []
for line in lines:
line = line.rstrip()
if len(line) != 0:
trimmedlines.append(line)
# print trimmedlines
return '\n'.join(trimmedlines)
def unitTest():
html = """<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang='en-us' lang='en-us'>
<head>
<meta charset="utf-8"/>
<meta name="description" content=""/>
<meta name="author" content=""/>
<foo name="1"/>
<title>IDPF Component - Gallery Sample</title>
</head>
<body>
<h3>Component container</h3>
xx
<iframe id="component1"/>
xx
<img id="xx"></img>
<foo name="2dd"/>
<foo name="3"/>
<foo name="4"/>
<foo namex="5dd"/>
</body>
</html>"""
xmlom = XMLOM(html)
iframeNode = xmlom.findByID('component1')
xmlElement.setAttribute(iframeNode, 'foo', 'bar')
node = xmlom.findByID('xx')
xmlElement.addChildElement(node, 'baz', {'foo': 'bar', 'id': 'monkey'})
node = xmlom.findByID('monkey')
print xmlom.toPrettyXML()
xmlElement.setAttribute(node, 'foo', 'graz')
print xmlom.toPrettyXML()
xmlElement.removeNode(iframeNode)
print xmlom.toPrettyXML()
nodes = xmlom.findAllByTagName('foo')
for node in nodes:
print node, xmlElement.getAttributeValue(node, 'name'), xmlElement.getAttributeValue(node, 'namex')
print "eoj"
if __name__ == '__main__':
unitTest()