# Copyright (C) 2009 Kevin Ollivier  All rights reserved.

#

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

# modification, are permitted provided that the following conditions

# are met:

# 1. Redistributions of source code must retain the above copyright

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

# 2. 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.

#

# THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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. 

#

# This module is for code where we override waf's default behavior or extend waf

import os

import subprocess

import sys

import Utils

# version of exec_command that handles Windows command lines longer than 32000 chars

def exec_command(s, **kw):

    filename = ''

    if sys.platform.startswith('win') and len(' '.join(s)) > 32000:

        import tempfile

        (fd, filename) = tempfile.mkstemp()

        os.write(fd, ' '.join(s[1:]))

        os.close(fd)

        s = [s[0], '@' + filename]

    if 'log' in kw:

        kw['stdout'] = kw['stderr'] = kw['log']

        del(kw['log'])

    kw['shell'] = isinstance(s, str)

    def cleanup():

        try:

            if os.path.exists(filename):

                os.remove(filename)

        except:

            pass

    try:

        proc = subprocess.Popen(s, **kw)

        result = proc.wait()

        cleanup()

        return result

    except OSError:

        cleanup()

        raise

Utils.exec_command = exec_command

# Better performing h_file to keep hashing from consuming lots of time

import stat

def h_file(filename):

    st = os.stat(filename)

    if stat.S_ISDIR(st[stat.ST_MODE]): raise IOError('not a file')

    m = Utils.md5()

    m.update(str(st.st_mtime))

    m.update(str(st.st_size))

    m.update(filename)

    return m.digest()

Utils.h_file = h_file