#!/usr/bin/python

#

# Copyright (C) 2009 Google Inc. All rights reserved.

# 

# Redistribution and use in source and binary forms, with or without

# modification, are permitted provided that the following conditions are

# met:

# 

#     * Redistributions of source code must retain the above copyright

# notice, this list of conditions and the following disclaimer.

#     * Redistributions in binary form must reproduce the above

# copyright notice, this list of conditions and the following disclaimer

# in the documentation and/or other materials provided with the

# distribution.

#     * Neither the name of Google Inc. nor the names of its

# contributors may be used to endorse or promote products derived from

# this software without specific prior written permission.

# 

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#

# 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, sections

    (base, inputs, options) = sections

    assert len(base) == 3, base

    (input, cppdir, hdir) = base

    assert len(inputs) > 1, inputs

    generateBindings = inputs[0]

    perlModules = inputs[1:]

    includeDirs = []

    for perlModule in perlModules:

        includeDir = os.path.dirname(perlModule)

        if not includeDir in includeDirs:

            includeDirs.append(includeDir)

    if '--prefix' in options:

        prefixIndex = options.index('--prefix')

    else:

        prefixIndex = options.index('--generator')

    fileName = ''

    if '--filename' in options:

        fileName = options[options.index('--filename') + 1]

    if prefixIndex + 1 < len(options):

        prefix = options[prefixIndex + 1]

    # The defines come in as one flat string. Split it up into distinct arguments.

    if '--defines' in options:

        definesIndex = options.index('--defines')

        if definesIndex + 1 < len(options):

            splitOptions = shlex.split(options[definesIndex + 1])

            if splitOptions:

                options[definesIndex + 1] = ' '.join(splitOptions)

    # Build up the command.

    command = ['perl', '-w']

    for includeDir in includeDirs:

        command.extend(['-I', includeDir])

    command.append(generateBindings)

    command.extend(options)

    command.extend(['--outputHeadersDir', hdir])

    command.extend(['--outputDir', cppdir, input])

    # Do it. check_call is new in 2.5, so simulate its behavior with call and

    # assert.

    returnCode = subprocess.call(command)

    assert returnCode == 0

    return returnCode

if __name__ == '__main__':

    sys.exit(main(sys.argv))