Add exceptions to max_cols rule.

PRESUBMIT.py

 #!/usr/bin/python
 # Copyright (c) 2009 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.
 
 """Top-level presubmit script for Chromium.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts for
 details on the presubmit API built into gcl.
 """
@@ skipping 46 matching lines @@
 def LocalChecks(input_api, output_api, max_cols=80):
   """Reports an error if for any source file in SOURCE_FILE_EXTENSIONS:
      - uses CR (or CRLF)
      - contains a TAB
      - has a line that ends with whitespace
      - contains a line >|max_cols| cols unless |max_cols| is 0.
      - File does not end in a newline, or ends in more than one.
 
   Note that the whole file is checked, not only the changes.
   """
+  C_SOURCE_FILE_EXTENSIONS = ('.c', '.cc', '.cpp', '.h', '.inl')
   cr_files = []
   eof_files = []
   results = []
   excluded_paths = [input_api.re.compile(x) for x in EXCLUDED_PATHS]
   files = input_api.AffectedFiles()
   for f in files:
     path = f.LocalPath()
     root, ext = input_api.os_path.splitext(path)
     # Look for unsupported extensions.
     if not ext in SOURCE_FILE_EXTENSIONS:
@@ skipping 19 matching lines @@
 
     local_errors = []
     # Remove EOL character.
     lines = contents.splitlines()
     line_num = 1
     for line in lines:
       if line.endswith(' '):
         local_errors.append(output_api.PresubmitError(
             '%s, line %s ends with whitespaces.' %
             (path, line_num)))
-      # Accept lines with http:// to exceed the max_cols rule.
-      if max_cols and len(line) > max_cols and not 'http://' in line:
+      # Accept lines with http://, https:// and C #define/#pragma/#include to
+      # exceed the max_cols rule.
+      if (max_cols and
+          len(line) > max_cols and
+          not 'http://' in line and
+          not 'https://' in line and
+          not (line[0] == '#' and ext in C_SOURCE_FILE_EXTENSIONS)):
         local_errors.append(output_api.PresubmitError(
             '%s, line %s has %s chars, please reduce to %d chars.' %
             (path, line_num, len(line), max_cols)))
       if '\t' in line:
         local_errors.append(output_api.PresubmitError(
             "%s, line %s contains a tab character." %
             (path, line_num)))
       line_num += 1
       # Just show the first 5 errors.
       if len(local_errors) == 6:
         local_errors.pop()
         local_errors.append(output_api.PresubmitError("... and more."))
         break
     results.extend(local_errors)
 
   if cr_files:
     results.append(output_api.PresubmitError(
         'Found CR (or CRLF) line ending in these files, please use only LF:',
         items=cr_files))
   if eof_files:
     results.append(output_api.PresubmitError(
         'These files should end in one (and only one) newline character:',
         items=eof_files))
   return results