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#-*- coding: utf-8 -*-
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# Copyright 2008-2010 Mir Calculate Ltd. http://www.calculate-linux.org
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import sys
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from xml import xpath
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import xml.dom.minidom
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from cl_utils import _error
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# Перевод cообщений модуля
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from cl_lang import lang
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tr = lang()
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tr.setLocalDomain('cl_lib')
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tr.setLanguage(sys.modules[__name__])
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class xml_xfce(_error):
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"""Класс для объединения xfce-xml файлов"""
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# root нода
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rootNode = False
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# body нода
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bodyNode = False
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# Документ
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doc = False
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# Текст шаблона
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text = ""
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# Комментарий
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_comment = ("<!--","-->")
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def __init__(self, text):
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self.text = text
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# Создаем пустой объект
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self.docObj = type("_empty_class", (object,), {})()
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# Названия аттрибутов для пустого объекта
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emptyMethods = ["getNodeBody","removeComment","insertBRtoBody",
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"insertBeforeSepAreas"]
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# Добавляем необходимые аттрибуты пустому объекту
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for method in emptyMethods:
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setattr(self.docObj, method, self.emptyMethod)
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# Создаем XML документ
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self.doc = self.textToXML()
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def emptyMethod(self, *arg , **argv):
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"""Пустой метод"""
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return True
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def setNameBodyNode(self, name):
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"""Устанавливает название для корневой ноды документа"""
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if not self.bodyNode:
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return False
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self.bodyNode.setAttribute("name", name)
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return True
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def textToXML(self):
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"""Создание из текста XML документа
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Храним xml в своем формате
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"""
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if not self.text.strip():
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self.text = '''<?xml version="1.0" encoding="UTF-8"?>
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<channel version="1.0">
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</channel>'''
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try:
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self.doc = xml.dom.minidom.parseString(self.text)
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except:
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self.setError(_("Can not text template is XML"))
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return False
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self.rootNode = self.doc.documentElement
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self.bodyNode = self.rootNode
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return self.doc
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def join(self, xml_xfceObj):
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"""Объединяем конфигурации"""
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if isinstance(xml_xfceObj, xml_xfce):
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try:
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self.joinDoc(xml_xfceObj.doc)
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except:
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self.setError(_("Can not join template"))
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return False
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return True
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def _removeDropNodesAndAttrAction(self, xmlNode):
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"""Удаляет ноды с аттрибутом action='drop'
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Также удаляет аттрибут action у всех нод
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"""
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flagError = False
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childNodes = xmlNode.childNodes
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if xmlNode.nodeType ==xmlNode.ELEMENT_NODE:
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if xmlNode.hasAttribute("action"):
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nAction = xmlNode.getAttribute("action")
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if not nAction in ("join","replace","drop"):
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textError = _('''In the text, XML template, look \
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for a reserved attribute 'action' with the incorrect value.\n\
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Valid values attribute 'action': \
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(action="join", action="replace", action="drop")''')
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self.setError(textError)
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return False
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xmlNode.removeAttribute("action")
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if nAction == "drop":
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parentNode = xmlNode.parentNode
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if parentNode:
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parentNode.removeChild(xmlNode)
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if childNodes:
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for node in childNodes:
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if not self._removeDropNodesAndAttrAction(node):
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flagError = True
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break
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if flagError:
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return False
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return True
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def postXML(self):
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"""Последующая постобработка XML"""
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# Удаляем теги action и удаляемые ноды
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self._removeDropNodesAndAttrAction(self.bodyNode)
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def _join(self, xmlNewNode, xmlOldNode, flagRootNode=True):
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"""Объединение корневой ноды шаблона и корневой ноды файла"""
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xmlNode = xmlNewNode
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childNodes = xmlNode.childNodes
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nextOldNode = xmlOldNode
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flagError = False
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if xmlNode.nodeType ==xmlNode.ELEMENT_NODE:
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n = xmlNode
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path = u''
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nName = u''
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nType = u''
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nValue = u''
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nAction = u''
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attrName = ''
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attrType = ''
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path = n.tagName
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if n.hasAttribute("name"):
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nName = n.getAttribute("name")
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attrName = u"attribute::name='%s'"%nName
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if n.hasAttribute("type"):
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nType = n.getAttribute("type")
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attrType = u"attribute::type='%s'"%nType
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if n.hasAttribute("value"):
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nValue = n.getAttribute("value")
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if n.hasAttribute("action"):
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nAction = n.getAttribute("action")
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if not nAction in ("join","replace","drop"):
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textError = _('''In the text, XML template, look \
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for a reserved attribute 'action' with the incorrect value.\n\
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Valid values attribute 'action': \
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(action="join", action="replace", action="drop")''')
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self.setError(textError)
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return False
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if xmlOldNode.parentNode:
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strAttr = [attrName, attrType]
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findAttr = filter(lambda x: x, strAttr)
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findAttrStr = ''
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if findAttr:
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strAttr = u' and '.join(findAttr)
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findAttrStr = "[%s]"%strAttr
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findPath = u"child::%s%s"%(path,findAttrStr)
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# Рабочая нода
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if flagRootNode:
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workNode = xmlOldNode.parentNode
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else:
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workNode = xmlOldNode
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oldNodes = xpath.Evaluate(findPath, workNode)
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# Новая нода список
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flagArray = False
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if nType == "array":
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flagArray = True
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flagDrop = False
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flagJoin = True
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flagReplace = False
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if nAction == "replace":
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flagJoin = False
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flagReplace = True
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elif nAction == "drop":
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flagJoin = False
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flagDrop = True
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if flagRootNode:
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textError = _('Incorrect action="drop" in root node')
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self.setError(textError)
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return False
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if oldNodes:
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if len(oldNodes)>1:
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textError = _("The uncertainty in this template are \
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the same nodes at one level")
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self.setError(textError)
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return False
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nextOldNode = oldNodes[0]
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# Замещаем ноду в случае массива
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if flagArray and not flagDrop:
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replaceXmlNode = xmlNode.cloneNode(True)
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if nAction:
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replaceXmlNode.removeAttribute("action")
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workNode.replaceChild(replaceXmlNode,
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nextOldNode)
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flagJoin = False
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flagReplace = False
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childNodes = False
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# Объединение нод
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if flagJoin:
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if nextOldNode.hasAttribute("value"):
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oValue = nextOldNode.getAttribute("value")
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if nValue != oValue:
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nextOldNode.setAttribute("value",nValue)
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# Замещение ноды
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elif flagReplace:
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replaceXmlNode = xmlNode.cloneNode(True)
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if not\
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self._removeDropNodesAndAttrAction(replaceXmlNode):
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return False
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workNode.replaceChild(replaceXmlNode,
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nextOldNode)
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childNodes = False
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# Удаление ноды
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elif flagDrop:
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workNode.removeChild(nextOldNode)
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childNodes = False
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else:
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# Добавление ноды
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childNodes = False
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if not flagDrop:
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appendXmlNode = xmlNode.cloneNode(True)
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if not\
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self._removeDropNodesAndAttrAction(appendXmlNode):
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return False
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workNode.appendChild(appendXmlNode)
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if childNodes:
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for node in childNodes:
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if not self._join(node, nextOldNode, False):
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flagError = True
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break
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if flagError:
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return False
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return True
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def joinDoc(self, doc):
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"""Объединение документа шаблона и документа файла"""
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if not self.doc:
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self.setError(_("Can not text file is XML"))
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return False
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if not doc:
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self.setError(_("Can not text template is XML"))
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return False
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# Импортируем корневую ноду нового документа в текущий документ
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#newImportBodyNode = self.doc.importNode(doc.documentElement, True)
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# Объединение корневой ноды шаблона и корневой ноды файла
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if not self._join(doc.documentElement, self.bodyNode):
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return False
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return True
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def getConfig(self):
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"""Получение текстового файла из XML документа"""
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data = self.doc.toprettyxml(encoding='UTF-8').split("\n")
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data = filter(lambda x: x.strip(), data)
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return "\n".join(data).replace("\t"," ").decode("UTF-8")
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