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Side by Side Diff: Source/core/scripts/preprocessor.pm

Issue 26414004: Move core/scripts to build/scripts so that platform can use them. (Closed) Base URL: svn://svn.chromium.org/blink/trunk
Patch Set: Created 7 years, 2 months ago
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1 #
2 # Copyright (C) 2005 Nikolas Zimmermann <wildfox@kde.org>
3 # Copyright (C) 2011 Google Inc.
4 #
5 # This library is free software; you can redistribute it and/or
6 # modify it under the terms of the GNU Library General Public
7 # License as published by the Free Software Foundation; either
8 # version 2 of the License, or (at your option) any later version.
9 #
10 # This library is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 # Library General Public License for more details.
14 #
15 # You should have received a copy of the GNU Library General Public License
16 # along with this library; see the file COPYING.LIB. If not, write to
17 # the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 # Boston, MA 02110-1301, USA.
19 #
20
21 use strict;
22 use warnings;
23
24 use Config;
25 use IPC::Open2;
26 use IPC::Open3;
27
28 BEGIN {
29 use Exporter ();
30 our ($VERSION, @ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS);
31 $VERSION = 1.00;
32 @ISA = qw(Exporter);
33 @EXPORT = qw(&applyPreprocessor);
34 %EXPORT_TAGS = ( );
35 @EXPORT_OK = ();
36 }
37
38 # Returns an array of lines.
39 sub applyPreprocessor
40 {
41 my $fileName = shift;
42 my $defines = shift;
43 my $preprocessor = shift;
44
45 my @args = ();
46 if (!$preprocessor) {
47 require Config;
48 if ($ENV{CC}) {
49 $preprocessor = $ENV{CC};
50 } elsif (($Config::Config{'osname'}) =~ /solaris/i) {
51 $preprocessor = "/usr/sfw/bin/gcc";
52 } else {
53 $preprocessor = "/usr/bin/gcc";
54 }
55 push(@args, qw(-E -P -x c++));
56 }
57
58 # Remove double quotations from $defines and extract macros.
59 # For example, if $defines is ' "A=1" "B=1" C=1 "" D ',
60 # then it is converted into four macros -DA=1, -DB=1, -DC=1 and -DD.
61 $defines =~ s/\"//g;
62 my @macros = grep { $_ } split(/\s+/, $defines); # grep skips empty macros.
63 @macros = map { "-D$_" } @macros;
64
65 my $pid = 0;
66 if ($Config{osname} eq "cygwin" || $Config{osname} eq 'MSWin32') {
67 # This call can fail if Windows rebases cygwin, so retry a few times unt il it succeeds.
68 for (my $tries = 0; !$pid && ($tries < 20); $tries++) {
69 eval {
70 # Suppress STDERR so that if we're using cl.exe, the output
71 # name isn't needlessly echoed.
72 use Symbol 'gensym'; my $err = gensym;
73 $pid = open3(\*PP_IN, \*PP_OUT, $err, split(' ', $preprocessor), @args, @macros, $fileName);
74 1;
75 } or do {
76 sleep 1;
77 }
78 };
79 } else {
80 $pid = open2(\*PP_OUT, \*PP_IN, split(' ', $preprocessor), @args, @macro s, $fileName);
81 }
82 close PP_IN;
83 my @documentContent = <PP_OUT>;
84 close PP_OUT;
85 waitpid($pid, 0);
86 return @documentContent;
87 }
88
89 1;
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