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# This program is free software; you can redistribute it and/or modify
# it under the terms of the (LGPL) GNU Lesser General Public License as
# published by the Free Software Foundation; either version 3 of the 
# License, or (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# GNU Library Lesser General Public License for more details at
# ( http://www.gnu.org/licenses/lgpl.html ).
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
# written by: Jeff Ortel ( jortel@redhat.com )

Contains XML text classes.

from suds import *
from suds.sax import *

00025 class Text(unicode):
    An XML text object used to represent text content.
    @ivar lang: The (optional) language flag.
    @type lang: bool
    @ivar escaped: The (optional) XML special character escaped flag.
    @type escaped: bool
    __slots__ = ('lang', 'escaped',)
    def __valid(cls, *args):
        return ( len(args) and args[0] is not None )
    def __new__(cls, *args, **kwargs):
        if cls.__valid(*args):
            lang = kwargs.pop('lang', None)
            escaped = kwargs.pop('escaped', False)
            result = super(Text, cls).__new__(cls, *args, **kwargs)
            result.lang = lang
            result.escaped = escaped
            result = None
        return result
00050     def escape(self):
        Encode (escape) special XML characters.
        @return: The text with XML special characters escaped.
        @rtype: L{Text}
        if not self.escaped:
            post = sax.encoder.encode(self)
            escaped = ( post != self )
            return Text(post, lang=self.lang, escaped=escaped)
        return self
00062     def unescape(self):
        Decode (unescape) special XML characters.
        @return: The text with escaped XML special characters decoded.
        @rtype: L{Text}
        if self.escaped:
            post = sax.encoder.decode(self)
            return Text(post, lang=self.lang)
        return self
    def trim(self):
        post = self.strip()
        return Text(post, lang=self.lang, escaped=self.escaped)
    def __add__(self, other):
        joined = u''.join((self, other))
        result = Text(joined, lang=self.lang, escaped=self.escaped)
        if isinstance(other, Text):
            result.escaped = ( self.escaped or other.escaped )
        return result
    def __repr__(self):
        s = [self]
        if self.lang is not None:
            s.append(' [%s]' % self.lang)
        if self.escaped:
            s.append(' <escaped>')
        return ''.join(s)
    def __getstate__(self):
        state = {}
        for k in self.__slots__:
            state[k] = getattr(self, k)
        return state
    def __setstate__(self, state):
        for k in self.__slots__:
            setattr(self, k, state[k])
00103 class Raw(Text):
    Raw text which is not XML escaped.
    This may include I{string} XML.
00108     def escape(self):
        return self
00111     def unescape(self):
        return self
    def __add__(self, other):
        joined = u''.join((self, other))
        return Raw(joined, lang=self.lang)

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