115 lines
3.0 KiB
Perl
115 lines
3.0 KiB
Perl
#!env perl
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#
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# ***** BEGIN LICENSE BLOCK *****
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# Version: MPL 1.1/GPL 2.0/LGPL 2.1
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#
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# The contents of this file are subject to the Mozilla Public License Version
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# 1.1 (the "License"); you may not use this file except in compliance with
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# the License. You may obtain a copy of the License at
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# http://www.mozilla.org/MPL/
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#
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# Software distributed under the License is distributed on an "AS IS" basis,
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# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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# for the specific language governing rights and limitations under the
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# License.
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#
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# The Original Code is mozilla.org code.
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#
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# The Initial Developer of the Original Code is
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# Netscape Communications Corporation.
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# Portions created by the Initial Developer are Copyright (C) 2001
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# the Initial Developer. All Rights Reserved.
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#
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# Contributor(s):
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# Christopher Seawood <cls@seawood.org>
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#
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# Alternatively, the contents of this file may be used under the terms of
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# either of the GNU General Public License Version 2 or later (the "GPL"),
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# or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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# in which case the provisions of the GPL or the LGPL are applicable instead
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# of those above. If you wish to allow use of your version of this file only
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# under the terms of either the GPL or the LGPL, and not to allow others to
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# use your version of this file under the terms of the MPL, indicate your
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# decision by deleting the provisions above and replace them with the notice
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# and other provisions required by the GPL or the LGPL. If you do not delete
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# the provisions above, a recipient may use your version of this file under
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# the terms of any one of the MPL, the GPL or the LGPL.
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#
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# ***** END LICENSE BLOCK *****
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#
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# A generic script to add entries to a file
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# if the entry does not already exist
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#
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# Usage: $0 [-l] <filename> <entry> [<entry> <entry>]
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#
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# -l do not attempt flock the file.
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use Fcntl qw(:DEFAULT :flock);
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use Getopt::Std;
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use mozLock;
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sub usage() {
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print "$0 [-l] <filename> <entry>\n";
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exit(1);
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}
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$nofilelocks = 0;
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getopts("l");
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$nofilelocks = 1 if defined($::opt_l);
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$file = shift;
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undef @entrylist;
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while (defined($entry = shift)) {
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push @entrylist, $entry;
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}
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$lockfile = $file . ".lck";
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# touch the file if it doesn't exist
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if ( ! -e "$file") {
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$now = time;
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utime $now, $now, $file;
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}
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# This needs to be atomic
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mozLock($lockfile) unless $nofilelocks;
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# Read entire file into mem
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undef @inbuf;
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if ( -e "$file" ) {
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open(IN, "$file") || die ("$file: $!\n");
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binmode(IN);
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while ($tmp = <IN>) {
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chomp($tmp);
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push @inbuf, $tmp;
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}
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close(IN);
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}
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undef @outbuf;
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# Add each entry to file if it's not already there
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foreach $entry (@entrylist) {
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push @outbuf, $entry if (!grep(/^$entry$/, @inbuf));
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}
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$count = $#outbuf + 1;
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# Append new entry to file
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if ($count) {
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open(OUT, ">>$file") || die ("$file: $!\n");
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binmode(OUT);
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foreach $entry (@outbuf) {
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print OUT "$entry\n";
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}
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close(OUT);
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}
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mozUnlock($lockfile) unless $nofilelocks;
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exit(0);
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