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## @file
# 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.
#
# Copyright (c) 2011 - 2014, Intel Corporation. All rights reserved.<BR>
#
# 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.
#
'''
XmlRoutines
'''
##
# Import Modules
#
import xml.dom.minidom
import re
import codecs
from Logger.ToolError import PARSER_ERROR
import Logger.Log as Logger
## Create a element of XML
#
# @param Name
# @param String
# @param NodeList
# @param AttributeList
#
def CreateXmlElement(Name, String, NodeList, AttributeList):
Doc = xml.dom.minidom.Document()
Element = Doc.createElement(Name)
if String != '' and String != None:
Element.appendChild(Doc.createTextNode(String))
for Item in NodeList:
if type(Item) == type([]):
Key = Item[0]
Value = Item[1]
if Key != '' and Key != None and Value != '' and Value != None:
Node = Doc.createElement(Key)
Node.appendChild(Doc.createTextNode(Value))
Element.appendChild(Node)
else:
Element.appendChild(Item)
for Item in AttributeList:
Key = Item[0]
Value = Item[1]
if Key != '' and Key != None and Value != '' and Value != None:
Element.setAttribute(Key, Value)
return Element
## Get a list of XML nodes using XPath style syntax.
#
# Return a list of XML DOM nodes from the root Dom specified by XPath String.
# If the input Dom or String is not valid, then an empty list is returned.
#
# @param Dom The root XML DOM node.
# @param String A XPath style path.
#
def XmlList(Dom, String):
if String == None or String == "" or Dom == None or Dom == "":
return []
if Dom.nodeType == Dom.DOCUMENT_NODE:
Dom = Dom.documentElement
if String[0] == "/":
String = String[1:]
TagList = String.split('/')
Nodes = [Dom]
Index = 0
End = len(TagList) - 1
while Index <= End:
ChildNodes = []
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
## Get a single XML node using XPath style syntax.
#
# Return a single XML DOM node from the root Dom specified by XPath String.
# If the input Dom or String is not valid, then an empty string is returned.
#
# @param Dom The root XML DOM node.
# @param String A XPath style path.
#
def XmlNode(Dom, String):
if String == None or String == "" or Dom == None or Dom == "":
return None
if Dom.nodeType == Dom.DOCUMENT_NODE:
Dom = Dom.documentElement
if String[0] == "/":
String = String[1:]
TagList = String.split('/')
Index = 0
End = len(TagList) - 1
ChildNodes = [Dom]
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 None
## Get a single XML element using XPath style syntax.
#
# Return a single XML element from the root Dom specified by XPath String.
# If the input Dom or String is not valid, then an empty string is returned.
#
# @param Dom The root XML DOM object.
# @param Strin A XPath style path.
#
def XmlElement(Dom, String):
try:
return XmlNode(Dom, String).firstChild.data.strip()
except BaseException:
return ""
## Get a single XML element using XPath style syntax.
#
# Similar with XmlElement, but do not strip all the leading and tailing space
# and newline, instead just remove the newline and spaces introduced by
# toprettyxml()
#
# @param Dom The root XML DOM object.
# @param Strin A XPath style path.
#
def XmlElement2(Dom, String):
try:
HelpStr = XmlNode(Dom, String).firstChild.data
gRemovePrettyRe = re.compile(r"""(?:(\n *) )(.*)\1""", re.DOTALL)
HelpStr = re.sub(gRemovePrettyRe, r"\2", HelpStr)
return HelpStr
except BaseException:
return ""
## Get a single XML element of the current node.
#
# Return a single XML element specified by the current root Dom.
# If the input Dom is not valid, then an empty string is returned.
#
# @param Dom The root XML DOM object.
#
def XmlElementData(Dom):
try:
return Dom.firstChild.data.strip()
except BaseException:
return ""
## Get a list of XML elements using XPath style syntax.
#
# Return a list of XML elements from the root Dom specified by XPath String.
# If the input Dom or String is not valid, then an empty list is returned.
#
# @param Dom The root XML DOM object.
# @param String A XPath style path.
#
def XmlElementList(Dom, String):
return map(XmlElementData, XmlList(Dom, String))
## Get the XML attribute of the current node.
#
# Return a single XML attribute named Attribute from the current root Dom.
# If the input Dom or Attribute is not valid, then an empty string is returned.
#
# @param Dom The root XML DOM object.
# @param Attribute The name of Attribute.
#
def XmlAttribute(Dom, Attribute):
try:
return Dom.getAttribute(Attribute)
except BaseException:
return ''
## Get the XML node name of the current node.
#
# Return a single XML node name from the current root Dom.
# If the input Dom is not valid, then an empty string is returned.
#
# @param Dom The root XML DOM object.
#
def XmlNodeName(Dom):
try:
return Dom.nodeName.strip()
except BaseException:
return ''
## Parse an XML file.
#
# Parse the input XML file named FileName and return a XML DOM it stands for.
# If the input File is not a valid XML file, then an empty string is returned.
#
# @param FileName The XML file name.
#
def XmlParseFile(FileName):
try:
XmlFile = codecs.open(FileName, 'rb')
Dom = xml.dom.minidom.parse(XmlFile)
XmlFile.close()
return Dom
except BaseException, XExcept:
XmlFile.close()
Logger.Error('\nUPT', PARSER_ERROR, XExcept, File=FileName, RaiseError=True)
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