Initial import of the Chrome Frame codebase. Integration in chrome.gyp coming...

chrome_frame/combine_libs.py

+# 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.
+
+# TODO(slightlyoff): move to using shared version of this script.
+
+'''This script makes it easy to combine libs and object files to a new lib,
+optionally removing some of the object files in the input libs by regular
+expression matching.
+For usage information, run the script with a --help argument.
+'''
+import optparse
+import os
+import re
+import subprocess
+import sys
+
+
+def Shell(*args):
+  '''Runs the program and args in args, returns the output from the program.'''
+  process = subprocess.Popen(args,
+                             stdin = None,
+                             stdout = subprocess.PIPE,
+                             stderr = subprocess.STDOUT)
+  output = process.stdout.readlines()
+  process.wait()
+  retcode = process.returncode
+  if retcode != 0:
+    raise RuntimeError('%s exited with status %d' % (args[0], retcode))
+  return output
+
+
+def CollectRemovals(remove_re, inputs):
+  '''Returns a list of all object files in inputs that match remove_re.'''
+  removals = []
+  for input in inputs:
+    output = Shell('lib.exe', '/list', input)
+
+    for line in output:
+      line = line.rstrip()
+      if remove_re.search(line):
+        removals.append(line)
+
+  return removals
+
+
+def CombineLibraries(output, remove_re, inputs):
+  '''Combines all the libraries and objects in inputs, while removing any
+  object files that match remove_re.
+  '''
+  removals = []
+  if remove_re:
+    removals = CollectRemovals(remove_re, inputs)
+  
+  print removals
+
+  args = ['lib.exe', '/out:%s' % output]
+  args += ['/remove:%s' % obj for obj in removals]
+  args += inputs
+  Shell(*args)
+
+
+USAGE = '''usage: %prog [options] <lib or obj>+
+
+Combines input libraries or objects into an output library, while removing
+any object file (in the input libraries) that matches a given regular
+expression.
+'''
+
+def GetOptionParser():
+  parser = optparse.OptionParser(USAGE)
+  parser.add_option('-o', '--output', dest = 'output',
+                    help = 'write to this output library')
+  parser.add_option('-r', '--remove', dest = 'remove',
+                    help = 'object files matching this regexp will be removed '
+                            'from the output library')
+  return parser
+
+
+def Main():
+  '''Main function for this script'''
+  parser = GetOptionParser()
+  (opt, args) = parser.parse_args()
+  output = opt.output
+  remove = opt.remove
+  if not output:
+    parser.error('You must specify an output file')
+
+  if not args:
+    parser.error('You must specify at least one object or library')
+
+  output = output.strip()
+  remove = remove.strip()
+
+  if remove:
+    try:
+      remove_re = re.compile(opt.remove)
+    except:
+      parser.error('%s is not a valid regular expression' % opt.remove)
+  else:
+    remove_re = None
+
+  if sys.platform != 'win32':
+    parser.error('this script only works on Windows for now')
+
+  # If this is set, we can't capture lib.exe's output.
+  if 'VS_UNICODE_OUTPUT' in os.environ:
+    del os.environ['VS_UNICODE_OUTPUT']
+
+  CombineLibraries(output, remove_re, args)
+
+
+if __name__ == '__main__':
+  Main()