root/maint/find-dup-includes/find-in-one-file.pl

/*   */

#!/usr/bin/env perl
 
# Locate duplicate includes
 
# Copyright (c) 2005, Pavel Roskin
#   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 3 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, see <http://www.gnu.org/licenses/>.
 
 
use strict;
 
my %sys_includes;
my %loc_includes;
 
if ($#ARGV != 0) {
        print "Usage: dupincludes.pl file\n";
        exit 1;
}
 
my $filename = $ARGV[0];
 
if (!open (FILE, "$filename")) {
        print "Cannot open file \"$filename\"\n";
        exit 1;
}
 
my $lineno=1;
foreach (<FILE>) {
        if (/^\s*#\s*include\s*<(.*)>/) {
                if (defined $sys_includes{$1}) {
                        print "$filename:$lineno: duplicate <$1> (line no ".$sys_includes{$1}.")\n";
                } else {
                        $sys_includes{$1} = $lineno;
                }
        } elsif (/^\s*#\s*include\s*"(.*)"/) {
                if (defined $loc_includes{$1}) {
                        print "$filename:$lineno: duplicate \"$1\" (line no ".$loc_includes{$1}.")\n";
                } else {
                        $loc_includes{$1} = $lineno;
                }
        }
        $lineno++;
}

/*   */