1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
#!/usr/bin/perl
##############################################################################
# #
# UNURAN -- Universal Non-Uniform Random number generator #
# #
##############################################################################
# #
# FILE: remove_comments.pl #
# #
# Remove all comments and blank lines from given C source or header file #
# #
##############################################################################
# #
# Copyright (c) 2000-2006 Wolfgang Hoermann and Josef Leydold #
# Department of Statistics and Mathematics, WU Wien, Austria #
# #
# This program is free software; you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation; either version 2 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program; if not, write to the #
# Free Software Foundation, Inc., #
# 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA #
# #
##############################################################################
use strict;
my $DEBUG = 0;
############################################################
sub usage {
my $progname = $0;
$progname =~ s#^.*/##g;
print STDERR <<EOM;
usage: $progname <file>
Removes all comments and blank lines from C file <file>
EOM
exit -1;
}
############################################################
# year
my $year = 1900 + (localtime(time))[5];
# read file name from argument list ...
my $file = shift;
(usage and die) unless $file;
print "stripping $file ...\n";
# open file ...
open IN, $file or die "cannot open file $file\n";
# read file ...
my $content = '';
while (<IN>) { $content .= $_; }
close IN;
# some comments must not be removed.
# so we first masks them
$content =~ s {/\*\s*FALLTHROUGH\s*\*/} [\@\@FALLTHROUGH\@\@]gsx;
# remove all comments and empty lines ...
$content =~ s {/\*.*?\*/} []gsx;
$content =~ s /\n\s*\n/\n/gsx;
# now unmask these special comments
$content =~ s {\@\@FALLTHROUGH\@\@} [/\* FALLTHROUGH \*/]gsx;
# copyright statment
my $copyright =
"/* Copyright (c) 2000-$year Wolfgang Hoermann and Josef Leydold */\n" .
"/* Department of Statistics and Mathematics, WU Wien, Austria */\n";
# print into file
open OUT, ">$file";
print OUT $copyright;
print OUT $content;
close OUT;
# end
exit 0;
############################################################
|
