Move grit from DEPS into src.

tools/grit/grit/format/c_format.py

Index: tools/grit/grit/format/c_format.py
diff --git a/tools/grit/grit/format/c_format.py b/tools/grit/grit/format/c_format.py
new file mode 100755
index 0000000000000000000000000000000000000000..5e10b988da9dc126e90b1e97c5d4745194a743e7
--- /dev/null
+++ b/tools/grit/grit/format/c_format.py
@@ -0,0 +1,86 @@
+#!/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.
+
+"""Formats as a .C file for compilation.
+"""
+
+import os
+import re
+import types
+
+from grit import util
+
+
+def _FormatHeader(root, output_dir):
+  """Returns the required preamble for C files."""
+  # Find the location of the resource header file, so that we can include
+  # it.
+  resource_header = 'resource.h'  # fall back to this
+  for output in root.GetOutputFiles():
+    if output.attrs['type'] == 'rc_header':
+      resource_header = os.path.abspath(output.GetOutputFilename())
+      resource_header = util.MakeRelativePath(output_dir, resource_header)
+  return """// This file is automatically generated by GRIT.  Do not edit.
+
+#include "%s"
+
+// All strings are UTF-8
+""" % (resource_header)
+# end _FormatHeader() function
+
+
+def Format(root, lang='en', output_dir='.'):
+  """Outputs a C switch statement representing the string table."""
+  from grit.node import message
+  assert isinstance(lang, types.StringTypes)
+
+  yield _FormatHeader(root, output_dir)
+
+  yield 'const char* GetString(int id) {\n  switch (id) {'
+
+  for item in root.ActiveDescendants():
+    with item:
+      if isinstance(item, message.MessageNode):
+        yield _FormatMessage(item, lang)
+
+  yield '\n    default:\n      return 0;\n  }\n}\n'
+
+
+def _HexToOct(match):
+  "Return the octal form of the hex numbers"
+  hex = match.group("hex")
+  result = ""
+  while len(hex):
+    next_num = int(hex[2:4], 16)
+    result += "\\" + '%03d' % int(oct(next_num), 10)
+    hex = hex[4:]
+  return match.group("escaped_backslashes") + result
+
+
+def _FormatMessage(item, lang):
+  """Format a single <message> element."""
+
+  message = item.ws_at_start + item.Translate(lang) + item.ws_at_end
+  # output message with non-ascii chars escaped as octal numbers
+  # C's grammar allows escaped hexadecimal numbers to be infinite,
+  # but octal is always of the form \OOO
+  message = message.encode('utf-8').encode('string_escape')
+  # an escaped char is (\xHH)+ but only if the initial
+  # backslash is not escaped.
+  not_a_backslash = r"(^|[^\\])"  # beginning of line or a non-backslash char
+  escaped_backslashes = not_a_backslash + r"(\\\\)*"
+  hex_digits = r"((\\x)[0-9a-f]{2})+"
+  two_digit_hex_num = re.compile(
+    r"(?P<escaped_backslashes>%s)(?P<hex>%s)"
+    % (escaped_backslashes, hex_digits))
+  message = two_digit_hex_num.sub(_HexToOct, message)
+  # unescape \ (convert \\ back to \)
+  message = message.replace('\\\\', '\\')
+  message = message.replace('"', '\\"')
+  message = util.LINEBREAKS.sub(r'\\n', message)
+
+  name_attr = item.GetTextualIds()[0]
+
+  return '\n    case %s:\n      return "%s";' % (name_attr, message)