ed_xml.py
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###############################################################################
# Name: ed_thread.py #
# Purpose: Provides a base class for managing XML files and data. #
# Author: Cody Precord <cprecord@editra.org> #
# Copyright: (c) 2011 Cody Precord <staff@editra.org> #
# License: wxWindows License #
###############################################################################
"""
XML base class
"""
__author__ = "Cody Precord <cprecord@editra.org>"
__svnid__ = "$Id: ed_xml.py 72624 2012-10-06 19:38:14Z CJP $"
__revision__ = "$Revision: 72624 $"
#-----------------------------------------------------------------------------#
# Imports
import types
from xml.dom import minidom
import extern.dexml as dexml
from extern.dexml.fields import *
import util
#-----------------------------------------------------------------------------#
class EdXml(dexml.Model):
"""XML base class"""
def __init__(self, **kwds):
super(EdXml, self).__init__(**kwds)
Xml = property(lambda self: self.GetXml(),
lambda self, xstr: self.parse(xstr))
PrettyXml = property(lambda self: self.GetPrettyXml(),
lambda self, xstr: self.parse(xstr))
def GetPrettyXml(self):
"""Get a nicely formatted version of the rendered xml string
@return: string
"""
txt = ""
try:
txt = self.render()
txt = minidom.parseString(txt).toprettyxml()
txt = txt.replace('\t', ' ') # DeTabify
except UnicodeEncodeError, err:
util.Log("[EdXml][err] GetPrettyXml %s" % err)
return txt
def GetXml(self):
"""Get the XML string for this object
@return: string
"""
xstr = ""
try:
xstr = self.render()
except UnicodeEncodeError, err:
util.Log("[EdXml][err] GetXml %s" % err)
return xstr
def Write(self, path):
"""Write the xml to a file
@param path: string
@return: success (bool)
"""
suceeded = True
try:
xmlstr = self.PrettyXml
if isinstance(xmlstr, types.UnicodeType):
xmlstr = xmlstr.encode('utf-8')
handle = open(path, 'wb')
handle.write(xmlstr)
handle.close()
except (IOError, OSError, UnicodeEncodeError):
suceeded = False
return suceeded
@classmethod
def Load(cls, path):
"""Load this object from a file
@param path: path to xml file
@return: instance
"""
instance = None
try:
handle = open(path, 'rb')
xmlstr = handle.read()
handle.close()
instance = cls.parse(xmlstr)
except (IOError, OSError):
instance = None
return instance
@classmethod
def LoadString(cls, xmlstr):
"""Load an object from an XML string
@param cls: Class object
@param xmlstr: string
"""
instance = cls.parse(xmlstr)
return instance