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#!/usr/bin/perl
#
# Include polygen output in a page
#
# by Enrico Zini
package IkiWiki::Plugin::polygen;
use warnings;
use strict;
use IkiWiki;
use File::Find;
sub import { #{{{
IkiWiki::hook(type => "preprocess", id => "polygen",
call => \&preprocess);
} # }}}
sub preprocess (@) { #{{{
my %params=@_;
my $grammar = ($params{grammar} or 'polygen');
my $symbol = ($params{symbol} or undef);
# Sanitize parameters
$grammar =~ IkiWiki::basename($grammar);
$grammar =~ s/\.grm$//;
$grammar .= '.grm';
$symbol =~ s/[^A-Za-z0-9]//g if defined $symbol;
$symbol = IkiWiki::possibly_foolish_untaint($symbol) if defined $symbol;
my $grmfile = '/usr/share/polygen/ita/polygen.grm';
if (! -d '/usr/share/polygen') {
return "[[polygen not installed]]";
}
find({wanted => sub {
if (substr($File::Find::name, -length($grammar)) eq $grammar) {
$grmfile = IkiWiki::possibly_foolish_untaint($File::Find::name);
}
},
no_chdir => 1,
}, '/usr/share/polygen');
my $res;
if (defined $symbol) {
$res = `polygen -S $symbol $grmfile 2>/dev/null`;
}
else {
$res = `polygen $grmfile 2>/dev/null`;
}
if ($?) {
$res="[[polygen failed]]";
}
# Strip trainling spaces and newlines so that we flow well with the
# markdown text
$res =~ s/\s*$//;
return $res;
} # }}}
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