1# Copyright (C) 2009 Kevin Ollivier  All rights reserved.
2#
3# Redistribution and use in source and binary forms, with or without
4# modification, are permitted provided that the following conditions
5# are met:
6# 1. Redistributions of source code must retain the above copyright
7#    notice, this list of conditions and the following disclaimer.
8# 2. Redistributions in binary form must reproduce the above copyright
9#    notice, this list of conditions and the following disclaimer in the
10#    documentation and/or other materials provided with the distribution.
11#
12# THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
13# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
14# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
15# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
16# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
17# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
18# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
19# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
20# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
22# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23#
24# This module is for code where we override waf's default behavior or extend waf
25
26import os
27import subprocess
28import sys
29
30import Utils
31
32# version of exec_command that handles Windows command lines longer than 32000 chars
33def exec_command(s, **kw):
34    filename = ''
35    if sys.platform.startswith('win') and len(' '.join(s)) > 32000:
36        import tempfile
37        (fd, filename) = tempfile.mkstemp()
38        os.write(fd, ' '.join(s[1:]))
39        os.close(fd)
40
41        s = [s[0], '@' + filename]
42
43    if 'log' in kw:
44        kw['stdout'] = kw['stderr'] = kw['log']
45        del(kw['log'])
46    kw['shell'] = isinstance(s, str)
47
48    def cleanup():
49        try:
50            if os.path.exists(filename):
51                os.remove(filename)
52        except:
53            pass
54
55    try:
56        proc = subprocess.Popen(s, **kw)
57        result = proc.wait()
58        cleanup()
59        return result
60
61    except OSError:
62        cleanup()
63        raise
64
65Utils.exec_command = exec_command
66
67# Better performing h_file to keep hashing from consuming lots of time
68import stat
69def h_file(filename):
70    st = os.stat(filename)
71    if stat.S_ISDIR(st[stat.ST_MODE]): raise IOError('not a file')
72    m = Utils.md5()
73    m.update(str(st.st_mtime))
74    m.update(str(st.st_size))
75    m.update(filename)
76    return m.digest()
77
78Utils.h_file = h_file
79