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# -*- cperl -*-
# Copyright (C) 2008 MySQL AB
#
# 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 of the License.
#
# 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
package My::Options;
#
# Utility functions to work with list of options
#
use strict;
sub same($$) {
my $l1= shift;
my $l2= shift;
return compare($l1,$l2) == 0;
}
sub compare ($$) {
my $l1= shift;
my $l2= shift;
my @l1= @$l1;
my @l2= @$l2;
return -1 if @l1 < @l2;
return 1 if @l1 > @l2;
while ( @l1 ) # Same length
{
my $e1= shift @l1;
my $e2= shift @l2;
my $cmp= ($e1 cmp $e2);
return $cmp if $cmp != 0;
}
return 0; # They are the same
}
sub _split_option {
my ($option)= @_;
if ($option=~ /^--(.*)=(.*)$/){
return ($1, $2);
}
elsif ($option=~ /^--(.*)$/){
return ($1, undef)
}
elsif ($option=~ /^\$(.*)$/){ # $VAR
return ($1, undef)
}
elsif ($option=~ /^(.*)=(.*)$/){
return ($1, $2)
}
die "Unknown option format '$option'";
}
sub _build_option {
my ($name, $value)= @_;
if ($name =~ /^O, /){
return "-".$name."=".$value;
}
elsif ($value){
return "--".$name."=".$value;
}
return "--".$name;
}
#
# Compare two list of options and return what would need
# to be done to get the server running with the new settings
#
sub diff {
my ($from_opts, $to_opts)= @_;
my %from;
foreach my $from (@$from_opts)
{
my ($opt, $value)= _split_option($from);
next unless defined($opt);
$from{$opt}= $value;
}
#print "from: ", %from, "\n";
my %to;
foreach my $to (@$to_opts)
{
my ($opt, $value)= _split_option($to);
next unless defined($opt);
$to{$opt}= $value;
}
#print "to: ", %to, "\n";
# Remove the ones that are in both lists
foreach my $name (keys %from){
if (exists $to{$name} and $to{$name} eq $from{$name}){
#print "removing '$name' from both lists\n";
delete $to{$name};
delete $from{$name};
}
}
#print "from: ", %from, "\n";
#print "to: ", %to, "\n";
# Add all keys in "to" to result
my @result;
foreach my $name (keys %to){
push(@result, _build_option($name, $to{$name}));
}
# Add all keys in "from" that are not in "to"
# to result as "set to default"
foreach my $name (keys %from){
if (not exists $to{$name}) {
push(@result, _build_option($name, "default"));
}
}
return @result;
}
sub is_set {
my ($opts, $set_opts)= @_;
foreach my $opt (@$opts){
my ($opt_name1, $value1)= _split_option($opt);
foreach my $set_opt (@$set_opts){
my ($opt_name2, $value2)= _split_option($set_opt);
if ($opt_name1 eq $opt_name2){
# Option already set
return 1;
}
}
}
return 0;
}
sub toSQL {
my (@options)= @_;
my @sql;
foreach my $option (@options) {
my ($sql_name, $value)= _split_option($option);
#print "name: $sql_name\n";
#print "value: $value\n";
$sql_name=~ s/-/_/g;
push(@sql, "SET GLOBAL $sql_name=$value");
}
return join("; ", @sql);
}
sub toStr {
my $name= shift;
return "$name: ",
"['", join("', '", @_), "']\n";
}
1;
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