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#-*- coding: utf-8 -*-
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# Copyright 2008-2010 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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import time
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import re
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from xml import xpath
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import xml.dom.minidom
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from format.xml_xfce import xml_xfce
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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_gconf(xml_xfce):
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"""Класс для объединения gconf-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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# Текущее время в секундах
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currentTime = ""
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# Комментарий
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_comment = ("<!--","-->")
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# поддерживаемые аттрибуты тега entry. Пример <entry type="int"/>
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supportEntryTypes = ("int", "bool", "float", "string", "list", "pair")
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# регулярное выражения для поиска \t в начале строки (преобразование xml)
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reStartTabs = re.compile("^(\t+)(.*)$")
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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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# Пустой метод (не нужно имя файла для корневой ноды)
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setattr(self, "setNameBodyNode", self.emptyMethod)
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# Создаем XML документ
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self.doc = self.textToXML()
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def getCurrentTime(self):
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"""Получение текущего времени в секундах"""
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return str(int(time.time()))
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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"?><gconf></gconf>'''
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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 cmpListsNodesEntry(self, listXmlA, listXmlB):
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"""Сравнение содержимого двух списков XML нод"""
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getTextsNodes = lambda y: map(lambda x:\
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x.toxml().replace(" ","").replace("\t","").replace("\n",""),
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map(lambda x: x.hasAttribute("mtime") and\
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x.removeAttribute("mtime") or x,
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map(lambda x: x.cloneNode(True),
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filter(lambda x: x.nodeType==x.ELEMENT_NODE, y))))
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if set(getTextsNodes(listXmlA))==set(getTextsNodes(listXmlB)):
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return True
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return False
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def _join(self, xmlNewNode, xmlOldNode, flagRootNode=True, levelNumber=0):
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"""Объединение корневой ноды шаблона и корневой ноды файла"""
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if levelNumber>1:
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return True
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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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tagName = n.tagName
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nAction = u''
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nName = u''
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nType = u''
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nValue = u''
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nSchema = u''
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attrName = ''
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if flagRootNode:
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if not tagName == "gconf":
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self.setError(_("The text is not a valid gconf-XML format \
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(not found '<gconf>...</gconf>')"))
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return False
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flagType = False
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flagValue = False
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flagSchema = False
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else:
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if not tagName == "entry":
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self.setError(_("The text is not a valid gconf-XML format \
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(found '<gconf><%s>..</%s></gconf>'")%(tagName,tagName))
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return False
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if not n.hasAttribute("name"):
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self.setError(_('Not found arrtibute "name" in tag entry'))
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return False
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flagType = n.hasAttribute("type")
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flagValue = False
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flagSchema = n.hasAttribute("schema")
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if flagSchema:
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nSchema = n.getAttribute("schema")
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if not flagType and not flagSchema:
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self.setError(_('Not found arrtibute "type" in tag entry'))
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return False
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nName = n.getAttribute("name")
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attrName = u"attribute::name='%s'"%nName
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if flagType:
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flagValue = n.hasAttribute("value")
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nType = n.getAttribute("type")
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# Проверка правильности аттрибута type
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if not nType in self.supportEntryTypes:
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self.setError(\
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_('Incorrect arrtibute "type" - <entry type="%s"/>')\
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%nType)
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return False
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if flagValue:
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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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findAttrStr = ""
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if attrName:
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findAttrStr = "[%s]"%attrName
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findPath = u"child::%s%s"%(tagName,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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# По умолчанию - объединение
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flagJoin = True
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flagReplace = False
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flagDrop = False
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# Замещаем ноду
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if nType=="string" or nAction=="replace":
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flagJoin = False
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flagReplace = True
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# Замещаем ноду в случае массива
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elif nType == "list" or nType == "pair":
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flagJoin = False
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flagReplace = True
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# Удаляем ноду
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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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# Объединение нод
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if flagJoin:
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if flagType and flagValue:
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flagChange = False
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foundValue = nextOldNode.hasAttribute("value")
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if foundValue:
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oValue = nextOldNode.getAttribute("value")
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if nValue != oValue:
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flagChange = True
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else:
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flagChange = True
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if flagChange:
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nextOldNode.setAttribute("mtime",
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self.currentTime)
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nextOldNode.setAttribute("value",nValue)
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elif flagSchema:
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flagChange = False
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foundValue = nextOldNode.hasAttribute("schema")
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if foundValue:
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oSchema = nextOldNode.getAttribute("schema")
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if nSchema != oSchema:
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flagChange = True
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else:
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flagChange = True
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if flagChange:
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nextOldNode.setAttribute("mtime",
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self.currentTime)
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nextOldNode.setAttribute("schema",nSchema)
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# Замещение ноды
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elif flagReplace:
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replaceXmlNode = xmlNode.cloneNode(True)
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# Сравнение содержимого нод
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if not self.cmpListsNodesEntry([replaceXmlNode],
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[nextOldNode]):
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replaceXmlNode.setAttribute("mtime",
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self.currentTime)
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if not\
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self._removeDropNodesAndAttrAction(\
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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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appendXmlNode.setAttribute("mtime", self.currentTime)
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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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levelNumber +=1
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if not self._join(node, nextOldNode, False, levelNumber):
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flagError = True
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break
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levelNumber -= 1
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if flagError:
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return False
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return True
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def join(self, xml_gconfObj):
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"""Объединяем конфигурации"""
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# Получаем текущее время
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self.currentTime = self.getCurrentTime()
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if isinstance(xml_gconfObj, xml_gconf):
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try:
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self.joinDoc(xml_gconfObj.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 getConfig(self):
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"""Получение текстового файла из XML документа"""
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def expandStartTabs(s):
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if s.startswith("\t"):
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res = self.reStartTabs.search(s)
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return res.group(1).replace("\t"," ") + res.group(2)
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else:
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return s
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data = self.doc.toprettyxml().split("\n")
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data = map(lambda x: expandStartTabs(x),
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filter(lambda x: x.strip(), data))
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dataOut = []
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z = 0
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lenData = len(data)
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lenM2 = lenData - 2
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for i in xrange(lenData):
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if z>0:
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z -= 1
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continue
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if i < lenM2 and data[i].endswith(">") and not "<" in data[i+1]:
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dataOut.append(data[i] + data[i+1].strip() + data[i+2].strip())
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z = 2
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continue
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dataOut.append(data[i])
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return "\n".join(dataOut)
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