build/android/gyp/create_java_binary_script.py

   1 #!/usr/bin/env python
   2 #
   3 # Copyright 2014 The Chromium Authors. All rights reserved.
   4 # Use of this source code is governed by a BSD-style license that can be
   5 # found in the LICENSE file.
   6
   7 """Creates a simple script to run a java "binary".
   8
   9 This creates a script that sets up the java command line for running a java
  10 jar. This includes correctly setting the classpath and the main class.
  11 """
  12
  13 import optparse
  14 import os
  15 import sys
  16
  17 from util import build_utils
  18
  19 # The java command must be executed in the current directory because there may
  20 # be user-supplied paths in the args. The script receives the classpath relative
  21 # to the directory that the script is written in and then, when run, must
  22 # recalculate the paths relative to the current directory.
  23 script_template = """\
  24 #!/usr/bin/env python
  25 #
  26 # This file was generated by build/android/gyp/create_java_binary_script.py
  27
  28 import os
  29 import sys
  30
  31 self_dir = os.path.dirname(__file__)
  32 classpath = [{classpath}]
  33 extra_args = {extra_args}
  34 if os.getcwd() != self_dir:
  35   offset = os.path.relpath(self_dir, os.getcwd())
  36   classpath = [os.path.join(offset, p) for p in classpath]
  37 java_args = [
  38   "java",
  39   "-classpath", ":".join(classpath),
  40   "-enableassertions",
  41   \"{main_class}\"] + extra_args + sys.argv[1:]
  42 os.execvp("java", java_args)
  43 """
  44
  45 def main(argv):
  46   argv = build_utils.ExpandFileArgs(argv)
  47   parser = optparse.OptionParser()
  48   build_utils.AddDepfileOption(parser)
  49   parser.add_option('--output', help='Output path for executable script.')
  50   parser.add_option('--jar-path', help='Path to the main jar.')
  51   parser.add_option('--main-class',
  52       help='Name of the java class with the "main" entry point.')
  53   parser.add_option('--classpath', action='append',
  54       help='Classpath for running the jar.')
  55   options, extra_args = parser.parse_args(argv)
  56
  57   classpath = [options.jar_path]
  58   for cp_arg in options.classpath:
  59     classpath += build_utils.ParseGypList(cp_arg)
  60
  61   run_dir = os.path.dirname(options.output)
  62   classpath = [os.path.relpath(p, run_dir) for p in classpath]
  63
  64   with open(options.output, 'w') as script:
  65     script.write(script_template.format(
  66       classpath=('"%s"' % '", "'.join(classpath)),
  67       main_class=options.main_class,
  68       extra_args=repr(extra_args)))
  69
  70   os.chmod(options.output, 0750)
  71
  72   if options.depfile:
  73     build_utils.WriteDepfile(
  74         options.depfile,
  75         build_utils.GetPythonDependencies())
  76
  77
  78 if __name__ == '__main__':
  79   sys.exit(main(sys.argv[1:]))