1 <?php

     2 /*

     3 Plugin Name: GeSHi syntax highlighting

     4 Plugin URI: http://enanocms.org/GeSHi_support

     5 Description: Adds syntax highlighting support using the GeSHi engine.

     6 Author: Dan Fuhry

     7 Version: 0.1

     8 Author URI: http://enanocms.org/

     9 */

    10 

    11 /*

    12  * GeSHi highlighting plugin for Enano

    13  * Version 0.1

    14  * Copyright (C) 2007 Dan Fuhry

    15  *

    16  * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License

    17  * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

    18  *

    19  * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied

    20  * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.

    21  */

    22 

    23 global $db, $session, $paths, $template, $plugins; // Common objects

    24 $GLOBALS['geshi_supported_formats'] = array(

    25     'abap', 'blitzbasic', 'cpp-qt', 'd', 'idl', 'lua', 'ocaml', 'python', 'smalltalk', 'vhdl', 'actionscript', 'bnf', 'csharp',

    26     'eiffel', 'ini', 'm68k', 'oobas', 'qbasic', 'smarty', 'visualfoxpro', 'ada', 'caddcl', 'fortran', 'inno', 'matlab',

    27     'oracle8', 'rails', 'sql', 'winbatch', 'apache', 'cadlisp', 'css', 'freebasic', 'io', 'mirc', 'pascal', 'reg', 'tcl', 'xml',

    28     'applescript', 'cfdg', 'delphi', 'genero', 'java5', 'mpasm', 'perl', 'robots', 'text', 'xpp', 'asm', 'cfm', 'diff', 'gml', 'java',

    29     'mysql', 'per', 'ruby', 'thinbasic', 'z80', 'asp', 'c_mac', 'div', 'groovy', 'javascript', 'nsis', 'php-brief', 'sas', 'tsql',

    30     'autoit', 'c', 'dos', 'haskell', 'latex', 'objc', 'php', 'scheme', 'vbnet', 'bash', 'cpp', 'dot', 'html', 'lisp',

    31     'ocaml-brief', 'plsql', 'sdlbasic', 'vb'

    32   );

    33 

    34 // Knock out the existing <code> tag support

    35 $plugins->attachHook('text_wiki_construct', 'geshi_disable_tw_code($this);');

    36 

    37 function geshi_disable_tw_code($tw)

    38 {

    39   $tw->disable[] = 'Code';

    40   foreach ( $tw->rules as $i => $rule )

    41   {

    42     if ( $rule == 'Code' )

    43     {

    44       unset($tw->rules[$i]);

    45       return true;

    46     }

    47   }

    48 }

    49 

    50 // Prevent <code> tags from being stripped or sanitized (the plugin will handle all sanitation)

    51 $plugins->attachHook('render_sanitize_pre', 'geshi_strip_code($text, $geshi_code_blocks, $random_id);');

    52 $plugins->attachHook('render_sanitize_post', 'geshi_restore_code($text, $geshi_code_blocks, $random_id);');

    53 

    54 function geshi_strip_code(&$text, &$codeblocks, $random_id)

    55 {

    56   global $geshi_supported_formats;

    57   $codeblocks = array();

    58   $sf = '(' . implode('|', $geshi_supported_formats) . ')';

    59   preg_match_all('/<code type="?' . $sf . '"?>([\w\W]*?)<\/code>/ms', $text, $matches);

    60   

    61   // for debug

    62   /*

    63   if ( strstr($text, '<code type') )

    64     die('processing codes: <pre>' . htmlspecialchars(print_r($matches, true)) . '</pre><pre>' . htmlspecialchars($text) . '</pre>' . htmlspecialchars('/<code type="?' . $sf . '"?>([\w\W]*?)<\/code>/'));

    65   */

    66   

    67   foreach ( $matches[0] as $i => $match )

    68   {

    69     $codeblocks[$i] = array(

    70         'match' => $match,

    71         'lang' => $matches[1][$i],

    72         'code' => $matches[2][$i]

    73       );

    74     $text = str_replace_once($match, "{GESHI_BLOCK:$i:$random_id}", $text);

    75   }

    76 }

    77 

    78 function geshi_restore_code(&$text, &$codeblocks, $random_id)

    79 {

    80   foreach ( $codeblocks as $i => $match )

    81   {

    82     $text = str_replace_once("{GESHI_BLOCK:$i:$random_id}", $match['match'], $text);

    83   }

    84 }

    85 

    86 // Formatter hook - where the actual highlighting is performed

    87 $plugins->attachHook('render_wikiformat_veryearly', 'geshi_strip_code($text, $codeblocks, $random_id);');

    88 $plugins->attachHook('render_wikiformat_post', 'geshi_perform_highlight($result, $codeblocks, $random_id);');

    89 

    90 function geshi_perform_highlight(&$text, &$codeblocks, $random_id)

    91 {

    92   static $did_header_tweak = false;

    93   if ( !$did_header_tweak )

    94   {

    95     $did_header_tweak = true;

    96     global $template;

    97     $template->add_header('<style type="text/css">

    98       pre.geshi_highlighted {

    99         max-height: 1000000px !important;

   100       }

   101       pre.geshi_highlighted a {

   102         background-image: none !important;

   103         padding-right: 0 !important;

   104       }

   105       </style>

   106       ');

   107   }

   108   if ( !defined('GESHI_ROOT') )

   109     define('GESHI_ROOT', ENANO_ROOT . '/plugins/geshi/');

   110   

   111   require_once ( GESHI_ROOT . '/base.php' );

   112   

   113   foreach ( $codeblocks as $i => $match )

   114   {

   115     $lang =& $match['lang'];

   116     $code =& $match['code'];

   117     

   118     $geshi = new GeSHi($code, $lang, null);

   119     $geshi->set_header_type(GESHI_HEADER_PRE);

   120     // $geshi->enable_line_numbers(GESHI_FANCY_LINE_NUMBERS);

   121     $geshi->set_overall_class('geshi_highlighted');

   122     $parsed = $geshi->parse_code();

   123     

   124     $text = str_replace_once("{GESHI_BLOCK:$i:$random_id}", $parsed, $text);

   125   }

   126 }