← Back to branch summary

~bzr-pqm/bzr/bzr.dev

« back to all changes in this revision

Viewing changes to bzrlib/xml_serializer.py

  • Committer: Canonical.com Patch Queue Manager
  • Date: 2010-09-01 08:02:42 UTC
  • mfrom: (5390.3.3 faster-revert-593560)
  • Revision ID: pqm@pqm.ubuntu.com-20100901080242-esg62ody4frwmy66
(spiv) Avoid repeatedly calling self.target.all_file_ids() in
 InterTree.iter_changes. (Andrew Bennetts)

Show diffs side-by-side

added added

removed removed

Lines of Context:
bzrlib/xml_serializer.py
22
22
# importing this module is fairly slow because it has to load several
23
23
# ElementTree bits
24
24
 
25
 
import re
26
 
 
27
25
from bzrlib.serializer import Serializer
28
26
from bzrlib.trace import mutter
29
27
 
33
31
        from xml.etree.cElementTree import (ElementTree, SubElement, Element,
34
32
            XMLTreeBuilder, fromstring, tostring)
35
33
        import xml.etree as elementtree
36
 
        # Also import ElementTree module so monkey-patching below always works
37
 
        import xml.etree.ElementTree
38
34
    except ImportError:
39
35
        from cElementTree import (ElementTree, SubElement, Element,
40
36
                                  XMLTreeBuilder, fromstring, tostring)
115
111
        return ElementTree().parse(f)
116
112
 
117
113
 
 
114
# performance tuning for elementree's serialiser. This should be
 
115
# sent upstream - RBC 20060523.
 
116
# the functions here are patched into elementtree at runtime.
 
117
import re
 
118
escape_re = re.compile("[&'\"<>]")
 
119
escape_map = {
 
120
    "&":'&amp;',
 
121
    "'":"&apos;", # FIXME: overkill
 
122
    "\"":"&quot;",
 
123
    "<":"&lt;",
 
124
    ">":"&gt;",
 
125
    }
 
126
def _escape_replace(match, map=escape_map):
 
127
    return map[match.group()]
 
128
 
 
129
def _escape_attrib(text, encoding=None, replace=None):
 
130
    # escape attribute value
 
131
    try:
 
132
        if encoding:
 
133
            try:
 
134
                text = elementtree.ElementTree._encode(text, encoding)
 
135
            except UnicodeError:
 
136
                return elementtree.ElementTree._encode_entity(text)
 
137
        if replace is None:
 
138
            return escape_re.sub(_escape_replace, text)
 
139
        else:
 
140
            text = replace(text, "&", "&amp;")
 
141
            text = replace(text, "'", "&apos;") # FIXME: overkill
 
142
            text = replace(text, "\"", "&quot;")
 
143
            text = replace(text, "<", "&lt;")
 
144
            text = replace(text, ">", "&gt;")
 
145
            return text
 
146
    except (TypeError, AttributeError):
 
147
        elementtree.ElementTree._raise_serialization_error(text)
 
148
 
 
149
elementtree.ElementTree._escape_attrib = _escape_attrib
 
150
 
 
151
escape_cdata_re = re.compile("[&<>]")
 
152
escape_cdata_map = {
 
153
    "&":'&amp;',
 
154
    "<":"&lt;",
 
155
    ">":"&gt;",
 
156
    }
 
157
def _escape_cdata_replace(match, map=escape_cdata_map):
 
158
    return map[match.group()]
 
159
 
 
160
def _escape_cdata(text, encoding=None, replace=None):
 
161
    # escape character data
 
162
    try:
 
163
        if encoding:
 
164
            try:
 
165
                text = elementtree.ElementTree._encode(text, encoding)
 
166
            except UnicodeError:
 
167
                return elementtree.ElementTree._encode_entity(text)
 
168
        if replace is None:
 
169
            return escape_cdata_re.sub(_escape_cdata_replace, text)
 
170
        else:
 
171
            text = replace(text, "&", "&amp;")
 
172
            text = replace(text, "<", "&lt;")
 
173
            text = replace(text, ">", "&gt;")
 
174
            return text
 
175
    except (TypeError, AttributeError):
 
176
        elementtree.ElementTree._raise_serialization_error(text)
 
177
 
 
178
elementtree.ElementTree._escape_cdata = _escape_cdata
 
179
 
 
180
 
118
181
def escape_invalid_chars(message):
119
182
    """Escape the XML-invalid characters in a commit message.
120
183