path: root/IkiWiki/Plugin/shortcut.pm

#!/usr/bin/perl
package IkiWiki::Plugin::shortcut;

use warnings;
use strict;
use IkiWiki 3.00;

sub import {
    hook(type => "getsetup", id => "shortcut", call => \&getsetup);
    hook(type => "checkconfig", id => "shortcut", call => \&checkconfig);
    hook(type => "preprocess", id => "shortcut", call => \&preprocess_shortcut);
}

sub getsetup () {
    return
        plugin => {
            safe => 1,
            rebuild => undef,
        },
}

sub checkconfig () {
    if (defined $config{srcdir} && length $config{srcdir}) {
        # Preprocess the shortcuts page to get all the available shortcuts
        # defined before other pages are rendered.
        my $srcfile=srcfile("shortcuts.".$config{default_pageext}, 1);
        if (! defined $srcfile) {
            $srcfile=srcfile("shortcuts.mdwn", 1);
        }
        if (! defined $srcfile) {
            print STDERR sprintf(gettext("shortcut plugin will not work without %s"),
                "shortcuts.".$config{default_pageext})."\n";
        }
        else {
            IkiWiki::preprocess("shortcuts", "shortcuts", readfile($srcfile));
        }
    }
}

sub preprocess_shortcut (@) {
    my %params=@_;

    if (! defined $params{name} || ! defined $params{url}) {
        error gettext("missing name or url parameter");
    }

    hook(type => "preprocess", no_override => 1, id => $params{name},
        shortcut => 1,
        call => sub { shortcut_expand($params{url}, $params{desc}, @_) });

    #translators: This is used to display what shortcuts are defined.
    #translators: First parameter is the name of the shortcut, the second
    #translators: is an URL.
    return sprintf(gettext("shortcut %s points to <i>%s</i>"), $params{name}, $params{url});
}

sub shortcut_expand ($$@) {
    my $url=shift;
    my $desc=shift;
    my %params=@_;

    # Get params in original order.
    my @params;
    while (@_) {
        my $key=shift;
        my $value=shift;
        push @params, $key if ! length $value;
    }

    # If the shortcuts page changes, all pages that use shortcuts will
    # need to be updated.
    add_depends($params{destpage}, "shortcuts");

    my $text=join(" ", @params);
    my $encoded_text=$text;
    $encoded_text=~s/([^A-Za-z0-9])/sprintf("%%%02X", ord($1))/seg;
    
    $url=~s{\%([sS])}{
        $1 eq 's' ? $encoded_text : $text
    }eg;

    $text=~s/_/ /g;
    if (defined $params{desc}) {
        $desc=$params{desc};
    }
    if (defined $desc) {
        $desc=~s/\%s/$text/g;
    }
    else {
        $desc=$text;
    }

    return "<a href=\"$url\">$desc</a>";
}

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