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#!/usr/bin/perl
package IkiWiki::Plugin::conditional;
use warnings;
use strict;
use IkiWiki;
use UNIVERSAL;
# Globals used to pass information into the PageSpec functions.
our ($sourcepage, $destpage);
sub import { #{{{
hook(type => "preprocess", id => "if", call => \&preprocess_if);
} # }}}
sub preprocess_if (@) { #{{{
my %params=@_;
if (! exists $params{test} || ! exists $params{then}) {
return "[[if ".gettext('"test" and "then" parameters are required')."]]";
}
my $result=0;
$sourcepage=$params{page};
$destpage=$params{destpage};
# An optimisation to avoid needless looping over every page
# and adding of dependencies for simple uses of some of the
# tests.
if ($params{test} =~ /^(enabled|sourcepage|destpage)\((.*)\)$/) {
$result=eval "IkiWiki::PageSpec::match_$1(undef, ".
IkiWiki::safequote($2).", \$params{page})";
}
else {
add_depends($params{page}, $params{test});
foreach my $page (keys %pagesources) {
if (pagespec_match($page, $params{test}, $params{page})) {
$result=1;
last;
}
}
}
$sourcepage="";
$destpage="";
my $ret;
if ($result) {
$ret=$params{then};
}
elsif (exists $params{else}) {
$ret=$params{else};
}
else {
$ret="";
}
return IkiWiki::preprocess($params{page}, $params{destpage},
IkiWiki::filter($params{page}, $ret));
} # }}}
package IkiWiki::PageSpec;
sub match_enabled ($$$) { #{{{
shift;
my $plugin=shift;
# test if the plugin is enabled
return UNIVERSAL::can("IkiWiki::Plugin::".$plugin, "import");
} #}}}
sub match_sourcepage ($$$) { #{{{
shift;
my $glob=shift;
return match_glob($IkiWiki::Plugin::conditional::sourcepage, $glob,
$IkiWiki::Plugin::conditional::sourcepage);
} #}}}
sub match_destpage ($$$) { #{{{
shift;
my $glob=shift;
return match_glob($IkiWiki::Plugin::conditional::destpage, $glob,
$IkiWiki::Plugin::conditional::sourcepage);
} #}}}
sub match_included ($$$) { #{{{
return $IkiWiki::Plugin::conditional::sourcepage ne $IkiWiki::Plugin::conditional::destpage;
} #}}}
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