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#!/usr/bin/env python
# Copyright (c) 2007, Intel Corporation
# All rights reserved. This program and the accompanying materials
# are licensed and made available under the terms and conditions of the BSD License
# which accompanies this distribution. The full text of the license may be found at
# http://opensource.org/licenses/bsd-license.php
#
# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
"""This is an XML API that uses a syntax similar to XPath, but it is written in
standard python so that no extra python packages are required to use it."""
import xml.dom.minidom
def XmlList(Dom, String):
"""Get a list of XML Elements using XPath style syntax."""
if String == "" or Dom == None or not isinstance(Dom, xml.dom.Node):
return []
if String[0] == "/":
String = String[1:]
if Dom.nodeType==Dom.DOCUMENT_NODE:
Dom = Dom.documentElement
tagList = String.split('/')
nodes = [Dom]
childNodes = []
index = 0
end = len(tagList) - 1
while index <= end:
for node in nodes:
if node.nodeType == node.ELEMENT_NODE and node.tagName == tagList[index]:
if index < end:
childNodes.extend(node.childNodes)
else:
childNodes.append(node)
nodes = childNodes
childNodes = []
index += 1
return nodes
def XmlElement (Dom, String):
"""Return a single element that matches the String which is XPath style syntax."""
if String == "" or Dom == None or not isinstance(Dom, xml.dom.Node):
return ""
if String[0] == "/":
String = String[1:]
if Dom.nodeType==Dom.DOCUMENT_NODE:
Dom = Dom.documentElement
tagList = String.split('/')
childNodes = [Dom]
index = 0
end = len(tagList) - 1
while index <= end:
for node in childNodes:
if node.nodeType == node.ELEMENT_NODE and node.tagName == tagList[index]:
if index < end:
childNodes = node.childNodes
else:
return node
break
index += 1
return ""
def XmlElementData (Dom):
"""Get the text for this element."""
if Dom == None or Dom == '' or Dom.firstChild == None:
return ''
return Dom.firstChild.data.strip(' ')
def XmlAttribute (Dom, String):
"""Return a single attribute that named by String."""
if Dom == None or Dom == '':
return ''
try:
return Dom.getAttribute(String).strip(' ')
except:
return ''
def XmlTopTag(Dom):
"""Return the name of the Root or top tag in the XML tree."""
if Dom == None or Dom == '' or Dom.firstChild == None:
return ''
return Dom.firstChild.nodeName
# This acts like the main() function for the script, unless it is 'import'ed into another
# script.
if __name__ == '__main__':
# Nothing to do here. Could do some unit tests.
pass
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