native_client_sdk/src/tools/genhttpfs.py

   1 #!/usr/bin/env python
   2 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
   3 # Use of this source code is governed by a BSD-style license that can be
   4 # found in the LICENSE file.
   5
   6 # This scripts generates a manifest file for the MountHttp file system.
   7 # Files and directory paths are specified on the command-line.  The names
   8 # with glob and directories are recursed to form a list of files.
   9 #
  10 # For each file, the mode bits, size and path relative to the CWD are written
  11 # to the output file which is stdout by default.
  12 #
  13
  14 import glob
  15 import optparse
  16 import os
  17 import sys
  18
  19
  20 def main(argv):
  21   parser = optparse.OptionParser(
  22       usage='Usage: %prog [options] filename ...')
  23   parser.add_option('-C', '--srcdir',
  24                     help='Change directory.', dest='srcdir', default=None)
  25   parser.add_option('-o', '--output',
  26                     help='Output file name.', dest='output', default=None)
  27   parser.add_option('-v', '--verbose',
  28                     help='Verbose output.',  dest='verbose',
  29                     action='store_true')
  30   parser.add_option('-r', '--recursive',
  31                     help='Recursive search.', action='store_true')
  32   options, args = parser.parse_args(argv)
  33
  34   if options.output:
  35     outfile = open(options.output, 'w')
  36   else:
  37     outfile = sys.stdout
  38
  39   if options.srcdir:
  40     os.chdir(options.srcdir)
  41
  42   # Generate a set of unique file names bases on the input globs
  43   fileset = set()
  44   for fileglob in args:
  45     filelist = glob.glob(fileglob)
  46     if not filelist:
  47       raise RuntimeError('Could not find match for "%s".\n' % fileglob)
  48     for filename in filelist:
  49       if os.path.isfile(filename):
  50         fileset |= set([filename])
  51         continue
  52       if os.path.isdir(filename) and options.recursive:
  53         for root, _, files in os.walk(filename):
  54           fileset |= set([os.path.join(root, name) for name in files])
  55         continue
  56       raise RuntimeError('Can not handle path "%s".\n' % filename)
  57
  58   cwd = os.path.abspath(os.getcwd())
  59   cwdlen = len(cwd)
  60   for filename in sorted(fileset):
  61     relname = os.path.abspath(filename)
  62     if cwd not in relname:
  63       raise RuntimeError('%s is not relative to CWD %s.\n' % filename, cwd)
  64     relname = relname[cwdlen:]
  65     stat = os.stat(filename)
  66     mode = '-r--'
  67     outfile.write('%s %d %s\n' % (mode, stat.st_size, relname))
  68
  69   return 0
  70
  71
  72 if __name__ == '__main__':
  73   try:
  74     sys.exit(main(sys.argv[1:]))
  75   except OSError, e:
  76     sys.stderr.write('%s: %s\n' % (os.path.basename(__file__), e))
  77     sys.exit(1)