modules/paragraph-link.pl

   1 # Copyright (C) 2004  Alex Schroeder <alex@emacswiki.org>
   2 #
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 2 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program; if not, write to the
  15 #    Free Software Foundation, Inc.
  16 #    59 Temple Place, Suite 330
  17 #    Boston, MA 02111-1307 USA
  18
  19 $ModulesDescription .= '<p><a href="http://git.savannah.gnu.org/cgit/oddmuse.git/tree/modules/paragraph-link.pl">paragraph-link.pl</a>, see <a href="http://www.oddmuse.org/cgi-bin/oddmuse/Paragraph_Link_Extension">Paragraph Link Extension</a></p>';
  20
  21 push(@MyRules, \&ParagraphLinkRule);
  22 # The [...] rule conflicts with the [new] in portrait-support.pl
  23 $RuleOrder{\&ParagraphLinkRule} = 100;
  24
  25 sub ParagraphLinkRule {
  26   if ($bol && m/\G(\[(-)?$FreeLinkPattern\])/cog) {
  27     Dirty($1);
  28     my $invisible = $2;
  29     my $orig = $3;
  30     my $id = FreeToNormal($orig);
  31     my $text = $id;
  32     $text =~ s/_/ /g;
  33     my $html = ScriptLink(UrlEncode($id), $invisible ? '' : $text, 'permalink', $id,
  34                           Ts('Permalink to "%s"', $orig));
  35     my ($class, $resolved, $title, $exists) = ResolveId($id);
  36     if ($class eq 'alias' and $title ne $OpenPageName) {
  37       $html .= ' [' . Ts('anchor first defined here: %s',
  38                          ScriptLink(UrlEncode($resolved), $text, 'alias')) . ']';
  39     } elsif ($PermanentAnchors{$id} ne $OpenPageName
  40              and RequestLockDir('permanentanchors')) { # not fatal
  41       $PermanentAnchors{$id} = $OpenPageName;
  42       WritePermanentAnchors();
  43       ReleaseLockDir('permanentanchors');
  44     }
  45     $PagePermanentAnchors{$id} = 1; # add to the list of anchors in page
  46     $html .= ' [' . Ts('the page %s also exists',
  47                        ScriptLink("action=browse;anchor=0;id="
  48                                   . UrlEncode($id), $id, 'local')) . ']'
  49                                     if $exists;
  50     print $html;
  51     return '';
  52   }
  53   return undef;
  54 }