mirror of
https://github.com/percona/percona-toolkit.git
synced 2025-09-01 18:25:59 +00:00
2bd40d8c39
* Remove trailing spaces * PR-665 - Remove trailing spaces - Updated not stable test t/pt-online-schema-change/preserve_triggers.t - Updated utilities in bin directory * PR-665 - Remove trailing spaces - Fixed typos * PR-665 - Remove trailing spaces - Fixed typos --------- Co-authored-by: Sveta Smirnova <sveta.smirnova@percona.com>
69 lines
2.1 KiB
Perl
69 lines
2.1 KiB
Perl
# This program is copyright 2016 Percona LLC.
|
|
# Feedback and improvements are welcome.
|
|
#
|
|
# THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
|
|
# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
|
|
# MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
|
#
|
|
# 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, version 2; OR the Perl Artistic License. On UNIX and similar
|
|
# systems, you can issue `man perlgpl' or `man perlartistic' to read these
|
|
# licenses.
|
|
#
|
|
# 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.
|
|
# ###########################################################################
|
|
# VersionCompare package
|
|
# ###########################################################################
|
|
|
|
# The purpose of this very simple module is to compare MySQL version strings
|
|
# There's VersionParser and the perl core "version" module, but I wanted
|
|
# something simpler and that could grow incrementally
|
|
|
|
{
|
|
package VersionCompare;
|
|
|
|
use strict;
|
|
use English qw(-no_match_vars);
|
|
use constant PTDEBUG => $ENV{PTDEBUG} || 0;
|
|
|
|
sub cmp {
|
|
my ($v1, $v2) = @_;
|
|
|
|
# Remove all but numbers and dots.
|
|
# Assume simple 1.2.3 style
|
|
$v1 =~ s/[^\d\.]//;
|
|
$v2 =~ s/[^\d\.]//;
|
|
|
|
my @a = ( $v1 =~ /(\d+)\.?/g );
|
|
my @b = ( $v2 =~ /(\d+)\.?/g );
|
|
foreach my $n1 (@a) {
|
|
$n1 += 0; #convert to number
|
|
if (!@b) {
|
|
# b ran out of digits, a is larger
|
|
return 1;
|
|
}
|
|
my $n2 = shift @b;
|
|
$n2 += 0; # convert to number
|
|
if ($n1 == $n2) {
|
|
# still tied?, fetch next
|
|
next;
|
|
}
|
|
else {
|
|
# difference! return result
|
|
return $n1 <=> $n2;
|
|
}
|
|
}
|
|
# b still has digits? it's larger, else it's a tie
|
|
return @b ? -1 : 0;
|
|
}
|
|
|
|
|
|
1;
|
|
}
|
|
# ###########################################################################
|
|
# End VersionCompare package
|
|
# ###########################################################################
|