Make autofill regular expressions unicode again.

Instead of compiling the source file with UTF8 directly, run it through
a python script that rewrites the UTF8 into C literals.

BUG=95858


Review URL: http://codereview.chromium.org/7891020

git-svn-id: http://src.chromium.org/svn/trunk/src/build@101236 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

escape_unicode.py

@@ -0,0 +1,55 @@
+#!/usr/bin/python
+
+# Copyright (c) 2011 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.
+
+"""Convert any unicode characters found in the input file to C literals."""
+
+import codecs
+import optparse
+import os
+import sys
+
+def main(argv):
+  parser = optparse.OptionParser()
+  usage = 'Usage: %prog -o <output_dir> <input_file>'
+  parser.set_usage(usage)
+  parser.add_option('-o', dest='output_dir')
+
+  options, arglist = parser.parse_args(argv)
+
+  if not options.output_dir:
+    print "output_dir required"
+    return 1
+
+  if len(arglist) != 2:
+    print "input_file required"
+    return 1
+
+  in_filename = arglist[1]
+
+  if not in_filename.endswith('.utf8'):
+    print "input_file should end in .utf8"
+    return 1
+
+  out_filename = os.path.join(options.output_dir, os.path.basename(
+      os.path.splitext(in_filename)[0]))
+
+  WriteEscapedFile(in_filename, out_filename)
+
+
+def WriteEscapedFile(in_filename, out_filename):
+  input_data = codecs.open(in_filename, 'r', 'utf8').read()
+  with codecs.open(out_filename, 'w', 'ascii') as out_file:
+    for i, char in enumerate(input_data):
+      if ord(char) > 127:
+        out_file.write(repr(char.encode('utf8'))[1:-1])
+        if input_data[i + 1:i + 2] in '0123456789abcdefABCDEF':
+          out_file.write('""')
+      else:
+        out_file.write(char.encode('ascii'))
+
+
+if __name__ == '__main__':
+  exit(main(sys.argv))