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        t = []
39        for i in s:
40            if i.find(" ") != -1:
41                i = '"%s"' % i
42            t.append(i)
43
44        t1 = t[1:]
45        # Fix for LNK1170 error
46        filename_str = '@' + filename
47        filename2_str = None
48        if len(' '.join(s)) > 131070:
49            t2 = t[len(t) / 2:]
50            t1 = t[1:len(t) / 2]
51            (fd2, filename2) = tempfile.mkstemp()
52            os.write(fd2, ' '.join(t2))
53            os.close(fd2)
54            filename2_str = '@' + filename2
55        os.write(fd, ' '.join(t1))
56        os.close(fd)
57
58        s = [s[0]]
59        s.append(filename_str)
60        if filename2_str:
61            s.append(filename2_str)
62
63    if 'log' in kw:
64        kw['stdout'] = kw['stderr'] = kw['log']
65        del(kw['log'])
66    kw['shell'] = isinstance(s, str)
67
68    def cleanup():
69        try:
70            if os.path.exists(filename):
71                os.remove(filename)
72        except:
73            pass
74
75    try:
76        proc = subprocess.Popen(s, **kw)
77        result = proc.wait()
78        cleanup()
79        return result
80
81    except OSError:
82        cleanup()
83        raise
84
85Utils.exec_command = exec_command
86
87# Better performing h_file to keep hashing from consuming lots of time
88import stat
89def h_file(filename):
90    st = os.stat(filename)
91    if stat.S_ISDIR(st[stat.ST_MODE]): raise IOError('not a file')
92    m = Utils.md5()
93    m.update(str(st.st_mtime))
94    m.update(str(st.st_size))
95    m.update(filename)
96    return m.digest()
97
98Utils.h_file = h_file
99