def get_patched_content(self):
"""Get self.patched_content, computing it if necessary.
This is the content of the file after applying this patch.
Returns:
a Content instance.
Raises:
engine.FetchError: If there was a problem fetching the old content.
"""
try:
if self.patched_content is not None:
return self.patched_content
except db.Error:
# This may happen when a Content entity was deleted behind our
# back.
self.patched_content = None
old_lines = self.get_content().text.splitlines(True)
logging.info('Creating patched_content for %s', self.filename)
chunks = patching.ParsePatchToChunks(self.lines, self.filename)
new_lines = []
for _, _, new in patching.PatchChunks(old_lines, chunks):
new_lines.extend(new)
text = db.Text(''.join(new_lines))
patched_content = Content(text=text, parent=self)
patched_content.put()
self.patched_content = patched_content
self.put()
return patched_content
def _RenderDiffTableRows(request,
old_lines,
chunks,
patch,
colwidth=DEFAULT_COLUMN_WIDTH,
debug=False):
"""Internal version of RenderDiffTableRows().
Args:
The same as for RenderDiffTableRows.
Yields:
Tuples (tag, row) where tag is an indication of the row type.
"""
old_dict = {}
new_dict = {}
if patch:
old_dict, new_dict = _GetComments(request)
old_max, new_max = _ComputeLineCounts(old_lines, chunks)
return _TableRowGenerator(patch, old_dict, old_max, 'old', patch, new_dict,
new_max, 'new',
patching.PatchChunks(old_lines,
chunks), colwidth, debug)
def _apply_patch(old_lines, patch_name, dif_lines):
new_lines = []
chunks = patching.ParsePatchToChunks(dif_lines, patch_name)
for tag, old, new in patching.PatchChunks(old_lines, chunks):
new_lines.extend(new)
return ''.join(new_lines)