1 files changed, 179 insertions, 0 deletions
diff --git a/mysql-test/lib/My/Options.pm b/mysql-test/lib/My/Options.pm
new file mode 100644
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+++ b/mysql-test/lib/My/Options.pm
@@ -0,0 +1,179 @@
+# -*- cperl -*-
+# Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
+#
+# 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  02110-1335  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($name, "default"));
+    }
+  }
+
+  return @result;
+}
+
+
+sub is_subset {
+  my ($set, $subset)= @_;
+  my %cache = map { join('=', _split_option($_)), 1 } @$set;
+
+  for (@$subset){
+    my ($name, $value)= _split_option($_);
+    return 0 unless $cache{"$name=$value"};
+  }
+
+  return 1;
+}
+
+
+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;
+