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Viewing changes to bzrlib/xml_serializer.py

  • Committer: Michael Ellerman
  • Date: 2006-03-09 00:24:48 UTC
  • mto: (1610.1.8 bzr.mbp.integration)
  • mto: This revision was merged to the branch mainline in revision 1616.
  • Revision ID: michael@ellerman.id.au-20060309002448-70cce15e3d605130
Make the "ignore line" in the commit message editor the "right" width, so
that if you make your message that wide it won't wrap in bzr log output.
Just as a visual aid.

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bzrlib/xml_serializer.py
 
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# -*- coding: UTF-8 -*-
 
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# This program is free software; you can redistribute it and/or modify
 
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# it under the terms of the GNU General Public License as published by
 
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# the Free Software Foundation; either version 2 of the License, or
 
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# (at your option) any later version.
 
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# This program is distributed in the hope that it will be useful,
 
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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# GNU General Public License for more details.
 
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# You should have received a copy of the GNU General Public License
 
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# along with this program; if not, write to the Free Software
 
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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"""XML externalization support."""
 
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# "XML is like violence: if it doesn't solve your problem, you aren't
 
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# using enough of it." -- various
 
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# importing this module is fairly slow because it has to load several
 
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# ElementTree bits
 
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from bzrlib.trace import mutter, warning
 
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try:
 
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    from cElementTree import (ElementTree, SubElement, Element,
 
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                              XMLTreeBuilder, fromstring, tostring)
 
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except ImportError:
 
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    mutter('WARNING: using slower ElementTree; consider installing cElementTree'
 
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           " and make sure it's on your PYTHONPATH")
 
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    from util.elementtree.ElementTree import (ElementTree, SubElement,
 
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                                              Element, XMLTreeBuilder,
 
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                                              fromstring, tostring)
 
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from bzrlib.errors import BzrError
 
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class Serializer(object):
 
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    """Abstract object serialize/deserialize"""
 
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    def write_inventory(self, inv, f):
 
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        """Write inventory to a file"""
 
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        elt = self._pack_inventory(inv)
 
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        self._write_element(elt, f)
 
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    def write_inventory_to_string(self, inv):
 
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        return tostring(self._pack_inventory(inv)) + '\n'
 
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    def read_inventory_from_string(self, xml_string):
 
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        return self._unpack_inventory(fromstring(xml_string))
 
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    def read_inventory(self, f):
 
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        return self._unpack_inventory(self._read_element(f))
 
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    def write_revision(self, rev, f):
 
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        self._write_element(self._pack_revision(rev), f)
 
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    def write_revision_to_string(self, rev):
 
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        return tostring(self._pack_revision(rev)) + '\n'
 
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    def read_revision(self, f):
 
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        return self._unpack_revision(self._read_element(f))
 
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    def read_revision_from_string(self, xml_string):
 
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        return self._unpack_revision(fromstring(xml_string))
 
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    def _write_element(self, elt, f):
 
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        ElementTree(elt).write(f, 'utf-8')
 
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        f.write('\n')
 
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    def _read_element(self, f):
 
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        return ElementTree().parse(f)