Moving version script and gypi file to build\util.

chrome/tools/build/version.py

-#!/usr/bin/env 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.
-
-"""
-version.py -- Chromium version string substitution utility.
-"""
-
-import getopt
-import os
-import sys
-
-
-class Usage(Exception):
-  def __init__(self, msg):
-    self.msg = msg
-
-
-def fetch_values_from_file(values_dict, file_name):
-  """
-  Fetches KEYWORD=VALUE settings from the specified file.
-
-  Everything to the left of the first '=' is the keyword,
-  everything to the right is the value.  No stripping of
-  white space, so beware.
-
-  The file must exist, otherwise you get the Python exception from open().
-  """
-  for line in open(file_name, 'r').readlines():
-    key, val = line.rstrip('\r\n').split('=', 1)
-    values_dict[key] = val
-
-
-def fetch_values(file_list):
-  """
-  Returns a dictionary of values to be used for substitution, populating
-  the dictionary with KEYWORD=VALUE settings from the files in 'file_list'.
-
-  Explicitly adds the following value from internal calculations:
-
-    OFFICIAL_BUILD
-  """
-  CHROME_BUILD_TYPE = os.environ.get('CHROME_BUILD_TYPE')
-  if CHROME_BUILD_TYPE == '_official':
-    official_build = '1'
-  else:
-    official_build = '0'
-
-  values = dict(
-    OFFICIAL_BUILD = official_build,
-  )
-
-  for file_name in file_list:
-    fetch_values_from_file(values, file_name)
-
-  return values
-
-
-def subst_template(contents, values):
-  """
-  Returns the template with substituted values from the specified dictionary.
-
-  Keywords to be substituted are surrounded by '@':  @KEYWORD@.
-
-  No attempt is made to avoid recursive substitution.  The order
-  of evaluation is random based on the order of the keywords returned
-  by the Python dictionary.  So do NOT substitute a value that
-  contains any @KEYWORD@ strings expecting them to be recursively
-  substituted, okay?
-  """
-  for key, val in values.iteritems():
-    try:
-      contents = contents.replace('@' + key + '@', val)
-    except TypeError:
-      print repr(key), repr(val)
-  return contents
-
-
-def subst_file(file_name, values):
-  """
-  Returns the contents of the specified file_name with substited
-  values from the specified dictionary.
-
-  This is like subst_template, except it operates on a file.
-  """
-  template = open(file_name, 'r').read()
-  return subst_template(template, values);
-
-
-def write_if_changed(file_name, contents):
-  """
-  Writes the specified contents to the specified file_name
-  iff the contents are different than the current contents.
-  """
-  try:
-    old_contents = open(file_name, 'r').read()
-  except EnvironmentError:
-    pass
-  else:
-    if contents == old_contents:
-      return
-    os.unlink(file_name)
-  open(file_name, 'w').write(contents)
-
-
-def main(argv=None):
-  if argv is None:
-    argv = sys.argv
-
-  short_options = 'e:f:i:o:t:h'
-  long_options = ['eval=', 'file=', 'help']
-
-  helpstr = """\
-Usage:  version.py [-h] [-f FILE] ([[-i] FILE] | -t TEMPLATE) [[-o] FILE]
-
-  -f FILE, --file=FILE              Read variables from FILE.
-  -i FILE, --input=FILE             Read strings to substitute from FILE.
-  -o FILE, --output=FILE            Write substituted strings to FILE.
-  -t TEMPLATE, --template=TEMPLATE  Use TEMPLATE as the strings to substitute.
-  -e VAR=VAL, --eval=VAR=VAL        Evaluate VAL after reading variables. Can
-                                    be used to synthesize variables. e.g.
-                                    -e 'PATCH_HI=int(PATCH)/256'.
-  -h, --help                        Print this help and exit.
-"""
-
-  evals = {}
-  variable_files = []
-  in_file = None
-  out_file = None
-  template = None
-
-  try:
-    try:
-      opts, args = getopt.getopt(argv[1:], short_options, long_options)
-    except getopt.error, msg:
-      raise Usage(msg)
-    for o, a in opts:
-      if o in ('-e', '--eval'):
-        try:
-          evals.update(dict([a.split('=',1)]))
-        except ValueError:
-          raise Usage("-e requires VAR=VAL")
-      elif o in ('-f', '--file'):
-        variable_files.append(a)
-      elif o in ('-i', '--input'):
-        in_file = a
-      elif o in ('-o', '--output'):
-        out_file = a
-      elif o in ('-t', '--template'):
-        template = a
-      elif o in ('-h', '--help'):
-        print helpstr
-        return 0
-    while len(args) and (in_file is None or out_file is None or
-                         template is None):
-      if in_file is None:
-        in_file = args.pop(0)
-      elif out_file is None:
-        out_file = args.pop(0)
-    if args:
-      msg = 'Unexpected arguments: %r' % args
-      raise Usage(msg)
-  except Usage, err:
-    sys.stderr.write(err.msg)
-    sys.stderr.write('; Use -h to get help.\n')
-    return 2
-
-  values = fetch_values(variable_files)
-  for key, val in evals.iteritems():
-    values[key] = str(eval(val, globals(), values))
-
-  if template is not None:
-    contents = subst_template(template, values)
-  elif in_file:
-    contents = subst_file(in_file, values)
-  else:
-    # Generate a default set of version information.
-    contents = """MAJOR=%(MAJOR)s
-MINOR=%(MINOR)s
-BUILD=%(BUILD)s
-PATCH=%(PATCH)s
-LASTCHANGE=%(LASTCHANGE)s
-OFFICIAL_BUILD=%(OFFICIAL_BUILD)s
-""" % values
-
-
-  if out_file:
-    write_if_changed(out_file, contents)
-  else:
-    print contents
-
-  return 0
-
-
-if __name__ == '__main__':
-  sys.exit(main())