IkiWiki/Plugin/polygen.pm

   1 #!/usr/bin/perl
   2 #
   3 # Include polygen output in a page
   4 #
   5 # by Enrico Zini
   6 package IkiWiki::Plugin::polygen;
   7
   8 use warnings;
   9 use strict;
  10 use IkiWiki 3.00;
  11 use File::Find;
  12
  13 sub import {
  14         hook(type => "getsetup", id => "polygen", call => \&getsetup);
  15         hook(type => "preprocess", id => "polygen", call => \&preprocess);
  16 }
  17
  18 sub getsetup () {
  19         return
  20                 plugin => {
  21                         safe => 1,
  22                         rebuild => undef,
  23                         section => "widget",
  24                 },
  25 }
  26
  27 sub preprocess (@) {
  28         my %params=@_;
  29         my $grammar = ($params{grammar} or 'polygen');
  30         my $symbol = ($params{symbol} or undef);
  31
  32         # Sanitize parameters
  33         $grammar =~ IkiWiki::basename($grammar);
  34         $grammar =~ s/[^A-Za-z0-9]//g;
  35         $grammar =~ s/\.grm$//;
  36         $grammar .= '.grm';
  37         $symbol =~ s/[^A-Za-z0-9]//g if defined $symbol;
  38         $symbol = IkiWiki::possibly_foolish_untaint($symbol) if defined $symbol;
  39
  40         my $grmfile = '/usr/share/polygen/ita/polygen.grm';
  41         if (! -d '/usr/share/polygen') {
  42                 error gettext("polygen not installed");
  43         }
  44         find({wanted => sub {
  45                         if (substr($File::Find::name, -length($grammar)) eq $grammar) {
  46                                 $grmfile = IkiWiki::possibly_foolish_untaint($File::Find::name);
  47                         }
  48                 },
  49                 no_chdir => 1,
  50         }, '/usr/share/polygen');
  51
  52         my $res;
  53         if (defined $symbol) {
  54                 $res = `polygen -S $symbol $grmfile 2>/dev/null`;
  55         }
  56         else {
  57                 $res = `polygen $grmfile 2>/dev/null`;
  58         }
  59
  60         if ($?) {
  61                 error gettext("command failed");
  62         }
  63
  64         # Strip trailing spaces and newlines so that we flow well with the
  65         # markdown text
  66         $res =~ s/\s*$//;
  67         return $res;
  68 }
  69
  70 1