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#!/usr/bin/env python
# Copyright (c) 2012 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
''' Toolbar preprocessing code. Turns all IDS_COMMAND macros in the RC file
into simpler constructs that can be understood by GRIT. Also deals with
expansion of $lf; placeholders into the correct linefeed character.
'''
import preprocess_interface
from grit import lazy_re
class ToolbarPreProcessor(preprocess_interface.PreProcessor):
''' Toolbar PreProcessing class.
'''
_IDS_COMMAND_MACRO = lazy_re.compile(
r'(.*IDS_COMMAND)\s*\(([a-zA-Z0-9_]*)\s*,\s*([a-zA-Z0-9_]*)\)(.*)')
_LINE_FEED_PH = lazy_re.compile(r'\$lf;')
_PH_COMMENT = lazy_re.compile(r'PHRWR')
_COMMENT = lazy_re.compile(r'^(\s*)//.*')
def Process(self, rctext, rcpath):
''' Processes the data in rctext.
Args:
rctext: string containing the contents of the RC file being processed
rcpath: the path used to access the file.
Return:
The processed text.
'''
ret = ''
rclines = rctext.splitlines()
for line in rclines:
if self._LINE_FEED_PH.search(line):
# Replace "$lf;" placeholder comments by an empty line.
# this will not be put into the processed result
if self._PH_COMMENT.search(line):
mm = self._COMMENT.search(line)
if mm:
line = '%s//' % mm.group(1)
else:
# Replace $lf by the right linefeed character
line = self._LINE_FEED_PH.sub(r'\\n', line)
# Deal with IDS_COMMAND_MACRO stuff
mo = self._IDS_COMMAND_MACRO.search(line)
if mo:
line = '%s_%s_%s%s' % (mo.group(1), mo.group(2), mo.group(3), mo.group(4))
ret += (line + '\n')
return ret
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