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#!/usr/bin/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.
# usage: rule_binding.py INPUT CPPDIR HDIR -- INPUTS -- OPTIONS
#
# INPUT is an IDL file, such as Whatever.idl.
#
# CPPDIR is the directory into which V8Whatever.cpp will be placed. HDIR is
# the directory into which V8Whatever.h will be placed.
#
# The first item in INPUTS is the path to generate-bindings.pl. Remaining
# items in INPUTS are used to build the Perl module include path.
#
# OPTIONS are passed as-is to generate-bindings.pl as additional arguments.
import errno
import os
import shlex
import shutil
import subprocess
import sys
def SplitArgsIntoSections(args):
sections = []
while len(args) > 0:
if not '--' in args:
# If there is no '--' left, everything remaining is an entire section.
dashes = len(args)
else:
dashes = args.index('--')
sections.append(args[:dashes])
# Next time through the loop, look at everything after this '--'.
if dashes + 1 == len(args):
# If the '--' is at the end of the list, we won't come back through the
# loop again. Add an empty section now corresponding to the nothingness
# following the final '--'.
args = []
sections.append(args)
else:
args = args[dashes + 1:]
return sections
def main(args):
sections = SplitArgsIntoSections(args[1:])
assert len(sections) == 3
(base, inputs, options) = sections
assert len(base) == 3
input = base[0]
cppdir = base[1]
hdir = base[2]
assert len(inputs) > 1
generate_bindings = inputs[0]
perl_modules = inputs[1:]
include_dirs = []
for perl_module in perl_modules:
include_dir = os.path.dirname(perl_module)
if not include_dir in include_dirs:
include_dirs.append(include_dir)
# The defines come in as one flat string. Split it up into distinct arguments.
if '--defines' in options:
defines_index = options.index('--defines')
if defines_index + 1 < len(options):
split_options = shlex.split(options[defines_index + 1])
if split_options:
options[defines_index + 1] = ' '.join(split_options)
# Build up the command.
command = ['perl', '-w']
for include_dir in include_dirs:
command.extend(['-I', include_dir])
command.append(generate_bindings)
command.extend(options)
command.extend(['--outputDir', cppdir, input])
# Do it. check_call is new in 2.5, so simulate its behavior with call and
# assert.
return_code = subprocess.call(command)
assert return_code == 0
# Both the .cpp and .h were generated in cppdir, but if hdir is different,
# the .h needs to move. Copy it instead of using os.rename for maximum
# portability in all cases.
if cppdir != hdir:
input_basename = os.path.basename(input)
(root, ext) = os.path.splitext(input_basename)
hname = 'V8%s.h' % root
hsrc = os.path.join(cppdir, hname)
hdst = os.path.join(hdir, hname)
shutil.copyfile(hsrc, hdst)
os.unlink(hsrc)
return return_code
if __name__ == '__main__':
sys.exit(main(sys.argv))
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