michael@0: #!/usr/bin/env python
michael@0: # Copyright (c) 2012 The Chromium Authors. All rights reserved.
michael@0: # Use of this source code is governed by a BSD-style license that can be
michael@0: # found in the LICENSE file.
michael@0: 
michael@0: """Copies test data files or directories into a given output directory."""
michael@0: 
michael@0: import optparse
michael@0: import os
michael@0: import shutil
michael@0: import sys
michael@0: 
michael@0: class WrongNumberOfArgumentsException(Exception):
michael@0:   pass
michael@0: 
michael@0: def ListFilesForPath(path):
michael@0:   """Returns a list of all the files under a given path."""
michael@0:   output = []
michael@0:   # Ignore dotfiles and dot directories.
michael@0:   # TODO(rohitrao): This will fail to exclude cases where the initial argument
michael@0:   # is a relative path that starts with a dot.
michael@0:   if os.path.basename(path).startswith('.'):
michael@0:     return output
michael@0: 
michael@0:   # Files get returned without modification.
michael@0:   if not os.path.isdir(path):
michael@0:     output.append(path)
michael@0:     return output
michael@0: 
michael@0:   # Directories get recursively expanded.
michael@0:   contents = os.listdir(path)
michael@0:   for item in contents:
michael@0:     full_path = os.path.join(path, item)
michael@0:     output.extend(ListFilesForPath(full_path))
michael@0:   return output
michael@0: 
michael@0: def CalcInputs(inputs):
michael@0:   """Computes the full list of input files for a set of command-line arguments.
michael@0:   """
michael@0:   # |inputs| is a list of strings, each of which may contain muliple paths
michael@0:   # separated by spaces.
michael@0:   output = []
michael@0:   for input in inputs:
michael@0:     tokens = input.split()
michael@0:     for token in tokens:
michael@0:       output.extend(ListFilesForPath(token))
michael@0:   return output
michael@0: 
michael@0: def CopyFiles(relative_filenames, output_basedir):
michael@0:   """Copies files to the given output directory."""
michael@0:   for file in relative_filenames:
michael@0:     relative_dirname = os.path.dirname(file)
michael@0:     output_dir = os.path.join(output_basedir, relative_dirname)
michael@0:     output_filename = os.path.join(output_basedir, file)
michael@0: 
michael@0:     # In cases where a directory has turned into a file or vice versa, delete it
michael@0:     # before copying it below.
michael@0:     if os.path.exists(output_dir) and not os.path.isdir(output_dir):
michael@0:       os.remove(output_dir)
michael@0:     if os.path.exists(output_filename) and os.path.isdir(output_filename):
michael@0:       shutil.rmtree(output_filename)
michael@0: 
michael@0:     if not os.path.exists(output_dir):
michael@0:       os.makedirs(output_dir)
michael@0:     shutil.copy(file, output_filename)
michael@0: 
michael@0: def DoMain(argv):
michael@0:   parser = optparse.OptionParser()
michael@0:   usage = 'Usage: %prog -o <output_dir> [--inputs] [--outputs] <input_files>'
michael@0:   parser.set_usage(usage)
michael@0:   parser.add_option('-o', dest='output_dir')
michael@0:   parser.add_option('--inputs', action='store_true', dest='list_inputs')
michael@0:   parser.add_option('--outputs', action='store_true', dest='list_outputs')
michael@0:   options, arglist = parser.parse_args(argv)
michael@0: 
michael@0:   if len(arglist) == 0:
michael@0:     raise WrongNumberOfArgumentsException('<input_files> required.')
michael@0: 
michael@0:   files_to_copy = CalcInputs(arglist)
michael@0:   if options.list_inputs:
michael@0:     return '\n'.join(files_to_copy)
michael@0: 
michael@0:   if not options.output_dir:
michael@0:     raise WrongNumberOfArgumentsException('-o required.')
michael@0: 
michael@0:   if options.list_outputs:
michael@0:     outputs = [os.path.join(options.output_dir, x) for x in files_to_copy]
michael@0:     return '\n'.join(outputs)
michael@0: 
michael@0:   CopyFiles(files_to_copy, options.output_dir)
michael@0:   return
michael@0: 
michael@0: def main(argv):
michael@0:   try:
michael@0:     result = DoMain(argv[1:])
michael@0:   except WrongNumberOfArgumentsException, e:
michael@0:     print >>sys.stderr, e
michael@0:     return 1
michael@0:   if result:
michael@0:     print result
michael@0:   return 0
michael@0: 
michael@0: if __name__ == '__main__':
michael@0:   sys.exit(main(sys.argv))