<?php
-/***************************************************************
- * Library to convert HTML into an approximate text equivalent *
- ***************************************************************
-
- Version: 1.0.3 (with modifications)
- Copyright 2003 Mark Wilton-Jones
- License: HowToCreate script license with written permission
- URL: http://www.howtocreate.co.uk/php/
-
- For full details about the script and to get the latest version,
- please see the HowToCreate web site above.
-
- This version contains modifications for Moodle. In each case the
- lines are marked with "Moodle", so you can see what has changed.
-
- ********************************************************************/
-
-function html2text( $badStr ) {
-
- $is_open_tb = false;
- $is_open_dq = false;
- $is_open_sq = false;
+/*************************************************************************
+ * *
+ * class.html2text.inc *
+ * *
+ *************************************************************************
+ * *
+ * Converts HTML to formatted plain text *
+ * *
+ * Copyright (c) 2005-2007 Jon Abernathy <jon@chuggnutt.com> *
+ * All rights reserved. *
+ * *
+ * This script is free software; you can redistribute it and/or modify *
+ * it under the terms of the GNU General Public License as published by *
+ * the Free Software Foundation; either version 2 of the License, or *
+ * (at your option) any later version. *
+ * *
+ * The GNU General Public License can be found at *
+ * http://www.gnu.org/copyleft/gpl.html. *
+ * *
+ * This script is distributed in the hope that it will be useful, *
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of *
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
+ * GNU General Public License for more details. *
+ * *
+ * Author(s): Jon Abernathy <jon@chuggnutt.com> *
+ * *
+ * Last modified: 08/08/07 *
+ * *
+ *************************************************************************/
+
+
+/**
+ * Takes HTML and converts it to formatted, plain text.
+ *
+ * Thanks to Alexander Krug (http://www.krugar.de/) to pointing out and
+ * correcting an error in the regexp search array. Fixed 7/30/03.
+ *
+ * Updated set_html() function's file reading mechanism, 9/25/03.
+ *
+ * Thanks to Joss Sanglier (http://www.dancingbear.co.uk/) for adding
+ * several more HTML entity codes to the $search and $replace arrays.
+ * Updated 11/7/03.
+ *
+ * Thanks to Darius Kasperavicius (http://www.dar.dar.lt/) for
+ * suggesting the addition of $allowed_tags and its supporting function
+ * (which I slightly modified). Updated 3/12/04.
+ *
+ * Thanks to Justin Dearing for pointing out that a replacement for the
+ * <TH> tag was missing, and suggesting an appropriate fix.
+ * Updated 8/25/04.
+ *
+ * Thanks to Mathieu Collas (http://www.myefarm.com/) for finding a
+ * display/formatting bug in the _build_link_list() function: email
+ * readers would show the left bracket and number ("[1") as part of the
+ * rendered email address.
+ * Updated 12/16/04.
+ *
+ * Thanks to Wojciech Bajon (http://histeria.pl/) for submitting code
+ * to handle relative links, which I hadn't considered. I modified his
+ * code a bit to handle normal HTTP links and MAILTO links. Also for
+ * suggesting three additional HTML entity codes to search for.
+ * Updated 03/02/05.
+ *
+ * Thanks to Jacob Chandler for pointing out another link condition
+ * for the _build_link_list() function: "https".
+ * Updated 04/06/05.
+ *
+ * Thanks to Marc Bertrand (http://www.dresdensky.com/) for
+ * suggesting a revision to the word wrapping functionality; if you
+ * specify a $width of 0 or less, word wrapping will be ignored.
+ * Updated 11/02/06.
+ *
+ * *** Big housecleaning updates below:
+ *
+ * Thanks to Colin Brown (http://www.sparkdriver.co.uk/) for
+ * suggesting the fix to handle </li> and blank lines (whitespace).
+ * Christian Basedau (http://www.movetheweb.de/) also suggested the
+ * blank lines fix.
+ *
+ * Special thanks to Marcus Bointon (http://www.synchromedia.co.uk/),
+ * Christian Basedau, Norbert Laposa (http://ln5.co.uk/),
+ * Bas van de Weijer, and Marijn van Butselaar
+ * for pointing out my glaring error in the <th> handling. Marcus also
+ * supplied a host of fixes.
+ *
+ * Thanks to Jeffrey Silverman (http://www.newtnotes.com/) for pointing
+ * out that extra spaces should be compressed--a problem addressed with
+ * Marcus Bointon's fixes but that I had not yet incorporated.
+ *
+ * Thanks to Daniel Schledermann (http://www.typoconsult.dk/) for
+ * suggesting a valuable fix with <a> tag handling.
+ *
+ * Thanks to Wojciech Bajon (again!) for suggesting fixes and additions,
+ * including the <a> tag handling that Daniel Schledermann pointed
+ * out but that I had not yet incorporated. I haven't (yet)
+ * incorporated all of Wojciech's changes, though I may at some
+ * future time.
+ *
+ * *** End of the housecleaning updates. Updated 08/08/07.
+ *
+ * @author Jon Abernathy <jon@chuggnutt.com>
+ * @version 1.0.0
+ * @since PHP 4.0.2
+ */
+class html2text
+{
+
+ /**
+ * Contains the HTML content to convert.
+ *
+ * @var string $html
+ * @access public
+ */
+ var $html;
+
+ /**
+ * Contains the converted, formatted text.
+ *
+ * @var string $text
+ * @access public
+ */
+ var $text;
+
+ /**
+ * Maximum width of the formatted text, in columns.
+ *
+ * Set this value to 0 (or less) to ignore word wrapping
+ * and not constrain text to a fixed-width column.
+ *
+ * @var integer $width
+ * @access public
+ */
+ var $width = 70;
+
+ /**
+ * List of preg* regular expression patterns to search for,
+ * used in conjunction with $replace.
+ *
+ * @var array $search
+ * @access public
+ * @see $replace
+ */
+ var $search = array(
+ "/\r/", // Non-legal carriage return
+ "/[\n\t]+/", // Newlines and tabs
+ '/[ ]{2,}/', // Runs of spaces, pre-handling
+ '/<script[^>]*>.*?<\/script>/i', // <script>s -- which strip_tags supposedly has problems with
+ '/<style[^>]*>.*?<\/style>/i', // <style>s -- which strip_tags supposedly has problems with
+ //'/<!-- .* -->/', // Comments -- which strip_tags might have problem a with
+ '/<p[^>]*>/i', // <P>
+ '/<br[^>]*>/i', // <br>
+ '/<i[^>]*>(.*?)<\/i>/i', // <i>
+ '/<em[^>]*>(.*?)<\/em>/i', // <em>
+ '/(<ul[^>]*>|<\/ul>)/i', // <ul> and </ul>
+ '/(<ol[^>]*>|<\/ol>)/i', // <ol> and </ol>
+ '/<li[^>]*>(.*?)<\/li>/i', // <li> and </li>
+ '/<li[^>]*>/i', // <li>
+ '/<hr[^>]*>/i', // <hr>
+ '/(<table[^>]*>|<\/table>)/i', // <table> and </table>
+ '/(<tr[^>]*>|<\/tr>)/i', // <tr> and </tr>
+ '/<td[^>]*>(.*?)<\/td>/i', // <td> and </td>
+ '/&(nbsp|#160);/i', // Non-breaking space
+ '/&(quot|rdquo|ldquo|#8220|#8221|#147|#148);/i',
+ // Double quotes
+ '/&(apos|rsquo|lsquo|#8216|#8217);/i', // Single quotes
+ '/>/i', // Greater-than
+ '/</i', // Less-than
+ '/&(amp|#38);/i', // Ampersand
+ '/&(copy|#169);/i', // Copyright
+ '/&(trade|#8482|#153);/i', // Trademark
+ '/&(reg|#174);/i', // Registered
+ '/&(mdash|#151|#8212);/i', // mdash
+ '/&(ndash|minus|#8211|#8722);/i', // ndash
+ '/&(bull|#149|#8226);/i', // Bullet
+ '/&(pound|#163);/i', // Pound sign
+ '/&(euro|#8364);/i', // Euro sign
+ '/&[^&;]+;/i', // Unknown/unhandled entities
+ '/[ ]{2,}/' // Runs of spaces, post-handling
+ );
+
+ /**
+ * List of pattern replacements corresponding to patterns searched.
+ *
+ * @var array $replace
+ * @access public
+ * @see $search
+ */
+ var $replace = array(
+ '', // Non-legal carriage return
+ ' ', // Newlines and tabs
+ ' ', // Runs of spaces, pre-handling
+ '', // <script>s -- which strip_tags supposedly has problems with
+ '', // <style>s -- which strip_tags supposedly has problems with
+ //'', // Comments -- which strip_tags might have problem a with
+ "\n\n", // <P>
+ "\n", // <br>
+ '_\\1_', // <i>
+ '_\\1_', // <em>
+ "\n\n", // <ul> and </ul>
+ "\n\n", // <ol> and </ol>
+ "\t* \\1\n", // <li> and </li>
+ "\n\t* ", // <li>
+ "\n-------------------------\n", // <hr>
+ "\n\n", // <table> and </table>
+ "\n", // <tr> and </tr>
+ "\t\t\\1\n", // <td> and </td>
+ ' ', // Non-breaking space
+ '"', // Double quotes
+ "'", // Single quotes
+ '>',
+ '<',
+ '&',
+ '(c)',
+ '(tm)',
+ '(R)',
+ '--',
+ '-',
+ '*',
+ '£',
+ 'EUR', // Euro sign. \80 ?
+ '', // Unknown/unhandled entities
+ ' ' // Runs of spaces, post-handling
+ );
+
+ /**
+ * List of preg* regular expression patterns to search for
+ * and replace using callback function.
+ *
+ * @var array $callback_search
+ * @access public
+ */
+ var $callback_search = array(
+ '/<(h)[123456][^>]*>(.*?)<\/h[123456]>/i', // H1 - H3
+ '/<(b)[^>]*>(.*?)<\/b>/i', // <b>
+ '/<(strong)[^>]*>(.*?)<\/strong>/i', // <strong>
+ '/<(a) [^>]*href=("|\')([^"\']+)\2[^>]*>(.*?)<\/a>/i',
+ // <a href="">
+ '/<(th)[^>]*>(.*?)<\/th>/i', // <th> and </th>
+ );
+
+ /**
+ * List of preg* regular expression patterns to search for in PRE body,
+ * used in conjunction with $pre_replace.
+ *
+ * @var array $pre_search
+ * @access public
+ * @see $pre_replace
+ */
+ var $pre_search = array(
+ "/\n/",
+ "/\t/",
+ '/ /',
+ '/<pre[^>]*>/',
+ '/<\/pre>/'
+ );
+
+ /**
+ * List of pattern replacements corresponding to patterns searched for PRE body.
+ *
+ * @var array $pre_replace
+ * @access public
+ * @see $pre_search
+ */
+ var $pre_replace = array(
+ '<br>',
+ ' ',
+ ' ',
+ '',
+ ''
+ );
+
+ /**
+ * Contains a list of HTML tags to allow in the resulting text.
+ *
+ * @var string $allowed_tags
+ * @access public
+ * @see set_allowed_tags()
+ */
+ var $allowed_tags = '';
+
+ /**
+ * Contains the base URL that relative links should resolve to.
+ *
+ * @var string $url
+ * @access public
+ */
+ var $url;
+
+ /**
+ * Indicates whether content in the $html variable has been converted yet.
+ *
+ * @var boolean $_converted
+ * @access private
+ * @see $html, $text
+ */
+ var $_converted = false;
+
+ /**
+ * Contains URL addresses from links to be rendered in plain text.
+ *
+ * @var string $_link_list
+ * @access private
+ * @see _build_link_list()
+ */
+ var $_link_list = '';
+
+ /**
+ * Number of valid links detected in the text, used for plain text
+ * display (rendered similar to footnotes).
+ *
+ * @var integer $_link_count
+ * @access private
+ * @see _build_link_list()
+ */
+ var $_link_count = 0;
+
+ /**
+ * Boolean flag, true if a table of link URLs should be listed after the text.
+ *
+ * @var boolean $_do_links
+ * @access private
+ * @see html2text()
+ */
+ var $_do_links = true;
+
+ /**
+ * Constructor.
+ *
+ * If the HTML source string (or file) is supplied, the class
+ * will instantiate with that source propagated, all that has
+ * to be done it to call get_text().
+ *
+ * @param string $source HTML content
+ * @param boolean $from_file Indicates $source is a file to pull content from
+ * @param boolean $do_links Indicate whether a table of link URLs is desired
+ * @param integer $width Maximum width of the formatted text, 0 for no limit
+ * @access public
+ * @return void
+ */
+ function html2text( $source = '', $from_file = false, $do_links = true, $width = 75 )
+ {
+ if ( !empty($source) ) {
+ $this->set_html($source, $from_file);
+ }
+
+ $this->set_base_url();
+ $this->_do_links = $do_links;
+ $this->width = $width;
+ }
- //remove comments
+ /**
+ * Loads source HTML into memory, either from $source string or a file.
+ *
+ * @param string $source HTML content
+ * @param boolean $from_file Indicates $source is a file to pull content from
+ * @access public
+ * @return void
+ */
+ function set_html( $source, $from_file = false )
+ {
+ if ( $from_file && file_exists($source) ) {
+ $this->html = file_get_contents($source);
+ }
+ else
+ $this->html = $source;
- while (substr_count($badStr, '<!--') &&
- substr_count($badStr, '-->') &&
- strpos($badStr, '-->', strpos($badStr, '<!--' ) ) > strpos( $badStr, '<!--' ) ) {
- $badStr = substr( $badStr, 0, strpos( $badStr, '<!--' ) ) .
- substr( $badStr, strpos( $badStr, '-->',
- strpos( $badStr, '<!--' ) ) + 3 );
+ $this->_converted = false;
}
- //now make sure all HTML tags are correctly written (> not in between quotes)
-
- $len = strlen($badStr); // Moodle
- $chr = $badStr{0}; // Moodle
- $goodStr = ''; // Moodle
-
- if ($len > 0) { // Moodle
- for ($x=0; $x < $len; $x++ ) { // Moodle
- $chr = $badStr{$x}; //take each letter in turn and check if that character is permitted there
- switch ( $chr ) {
- case '<':
- if ( !$is_open_tb && strtolower( substr( $badStr, $x + 1, 5 ) ) == 'style' ) {
- $x = strpos( strtolower( $badStr ), '</style>', $x ) + 7; // Moodle
- $chr = '';
- } else if ( !$is_open_tb && strtolower( substr( $badStr, $x + 1, 6 ) ) == 'script' ) {
- $x = strpos( strtolower( $badStr ), '</script>', $x ) + 8; // Moodle
- $chr = '';
- } else if (!$is_open_tb) {
- $is_open_tb = true;
- } else {
- $chr = '<';
- }
- break;
-
- case '>':
- if ( !$is_open_tb || $is_open_dq || $is_open_sq ) {
- $chr = '>';
- } else {
- $is_open_tb = false;
- }
- break;
-
- case '"':
- if ( $is_open_tb && !$is_open_dq && !$is_open_sq ) {
- $is_open_dq = true;
- } else if ( $is_open_tb && $is_open_dq && !$is_open_sq ) {
- $is_open_dq = false;
- } else {
- $chr = '"';
- }
- break;
-
- case "'":
- if ( $is_open_tb && !$is_open_dq && !$is_open_sq ) {
- $is_open_sq = true;
- } else if ( $is_open_tb && !$is_open_dq && $is_open_sq ) {
- $is_open_sq = false;
- }
- break;
- }
- $goodStr .= $chr;
+ /**
+ * Returns the text, converted from HTML.
+ *
+ * @access public
+ * @return string
+ */
+ function get_text()
+ {
+ if ( !$this->_converted ) {
+ $this->_convert();
}
- } // Moodle
- //now that the page is valid (I hope) for strip_tags, strip all unwanted tags
+ return $this->text;
+ }
- $goodStr = strip_tags( $goodStr, '<title><hr><h1><h2><h3><h4><h5><h6><div><p><pre><sup><ul><ol><br><dl><dt><table><caption><tr><li><dd><th><td><a><area><img><form><input><textarea><button><select><option>' );
+ /**
+ * Prints the text, converted from HTML.
+ *
+ * @access public
+ * @return void
+ */
+ function print_text()
+ {
+ print $this->get_text();
+ }
- //strip extra whitespace except between <pre> and <textarea> tags
+ /**
+ * Alias to print_text(), operates identically.
+ *
+ * @access public
+ * @return void
+ * @see print_text()
+ */
+ function p()
+ {
+ print $this->get_text();
+ }
- $badStr = preg_split( "/<\/?pre[^>]*>/i", $goodStr );
+ /**
+ * Sets the allowed HTML tags to pass through to the resulting text.
+ *
+ * Tags should be in the form "<p>", with no corresponding closing tag.
+ *
+ * @access public
+ * @return void
+ */
+ function set_allowed_tags( $allowed_tags = '' )
+ {
+ if ( !empty($allowed_tags) ) {
+ $this->allowed_tags = $allowed_tags;
+ }
+ }
- for ( $x = 0; isset($badStr[$x]) && is_string( $badStr[$x] ); $x++ ) { // Moodle: added isset() test
- if ( $x % 2 ) { $badStr[$x] = '<pre>'.$badStr[$x].'</pre>'; } else {
- $goodStr = preg_split( "/<\/?textarea[^>]*>/i", $badStr[$x] );
- for ( $z = 0; isset($goodStr[$z]) && is_string( $goodStr[$z] ); $z++ ) { // Moodle: added isset() test
- if ( $z % 2 ) { $goodStr[$z] = '<textarea>'.$goodStr[$z].'</textarea>'; } else {
- $goodStr[$z] = str_replace(' ', ' ', $goodStr[$z] );
- }
+ /**
+ * Sets a base URL to handle relative links.
+ *
+ * @access public
+ * @return void
+ */
+ function set_base_url( $url = '' )
+ {
+ if ( empty($url) ) {
+ if ( !empty($_SERVER['HTTP_HOST']) ) {
+ $this->url = 'http://' . $_SERVER['HTTP_HOST'];
+ } else {
+ $this->url = '';
+ }
+ } else {
+ // Strip any trailing slashes for consistency (relative
+ // URLs may already start with a slash like "/file.html")
+ if ( substr($url, -1) == '/' ) {
+ $url = substr($url, 0, -1);
}
- $badStr[$x] = implode('',$goodStr);
+ $this->url = $url;
}
}
- $goodStr = implode('',$badStr);
-
- //remove all options from select inputs
-
- $goodStr = preg_replace( "/<option[^>]*>[^<]*/i", '', $goodStr );
-
- //replace all tags with their text equivalents
-
- $goodStr = preg_replace( "/<(\/title|hr)[^>]*>/i", "\n --------------------\n", $goodStr );
-
- $goodStr = preg_replace( "/<(h|div|p)[^>]*>/i", "\n\n", $goodStr );
-
- $goodStr = preg_replace( "/<sup[^>]*>/i", '^', $goodStr );
-
- $goodStr = preg_replace( "/<(ul|ol|br|dl|dt|table|caption|\/textarea|tr[^>]*>\s*<(td|th))[^>]*>/i", "\n", $goodStr );
-
- $goodStr = preg_replace( "/<li[^>]*>/i", "\n� ", $goodStr );
-
- $goodStr = preg_replace( "/<dd[^>]*>/i", "\n\t", $goodStr );
-
- $goodStr = preg_replace( "/<(th|td)[^>]*>/i", "\t", $goodStr );
-
- // $goodStr = preg_replace( "/<a[^>]* href=(\"((?!\"|#|javascript:)[^\"#]*)(\"|#)|'((?!'|#|javascript:)[^'#]*)('|#)|((?!'|\"|>|#|javascript:)[^#\"'> ]*))[^>]*>/i", "[LINK: $2$4$6] ", $goodStr ); // Moodle
- $goodStr = preg_replace( "/<a\s[^>]*href=(\"((?!\"|#|javascript:)[^\"#]*)(\"|#)|'((?!'|#|javascript:)[^'#]*)('|#)|((?!'|\"|>|#|javascript:)[^#\"'> ]*))[^>]*>([^<]*)<\/a>/i", "$7 [$2$4$6]", $goodStr );
-
- // $goodStr = preg_replace( "/<img[^>]* alt=(\"([^\"]+)\"|'([^']+)'|([^\"'> ]+))[^>]*>/i", "[IMAGE: $2$3$4] ", $goodStr ); // Moodle
- $goodStr = preg_replace( "/<img[^>]* alt=(\"([^\"]+)\"|'([^']+)'|([^\"'> ]+))[^>]*>/i", "[$2$3$4] ", $goodStr );
-
- $goodStr = preg_replace( "/<form[^>]* action=(\"([^\"]+)\"|'([^']+)'|([^\"'> ]+))[^>]*>/i", "\n[FORM: $2$3$4] ", $goodStr );
-
- $goodStr = preg_replace( "/<(input|textarea|button|select)[^>]*>/i", "[INPUT] ", $goodStr );
-
- //strip all remaining tags (mostly closing tags)
-
- $goodStr = strip_tags( $goodStr );
-
- //convert HTML entities
-
- $goodStr = strtr( $goodStr, array_flip( get_html_translation_table( HTML_ENTITIES ) ) );
+ /**
+ * Workhorse function that does actual conversion.
+ *
+ * First performs custom tag replacement specified by $search and
+ * $replace arrays. Then strips any remaining HTML tags, reduces whitespace
+ * and newlines to a readable format, and word wraps the text to
+ * $width characters.
+ *
+ * @access private
+ * @return void
+ */
+ function _convert()
+ {
+ // Variables used for building the link list
+ $this->_link_count = 0;
+ $this->_link_list = '';
+
+ $text = trim(stripslashes($this->html));
+
+ // Convert <PRE>
+ $this->_convert_pre($text);
+
+ // Replace known html entities
+ $text = html_entity_decode($text, ENT_COMPAT, 'UTF-8');
+
+ // Run our defined search-and-replace
+ $text = preg_replace($this->search, $this->replace, $text);
+ $text = preg_replace_callback($this->callback_search, array('html2text', '_preg_callback'), $text);
+
+ // Strip any other HTML tags
+ $text = strip_tags($text, $this->allowed_tags);
+
+ // Bring down number of empty lines to 2 max
+ $text = preg_replace("/\n\s+\n/", "\n\n", $text);
+ $text = preg_replace("/[\n]{3,}/", "\n\n", $text);
+
+ // Add link list
+ if ( !empty($this->_link_list) ) {
+ $text .= "\n\nLinks:\n------\n" . $this->_link_list;
+ }
- preg_replace( "/&#(\d+);/me", "chr('$1')", $goodStr );
+ // Wrap the text to a readable format
+ // for PHP versions >= 4.0.2. Default width is 75
+ // If width is 0 or less, don't wrap the text.
+ if ( $this->width > 0 ) {
+ $text = wordwrap($text, $this->width);
+ }
- //wordwrap
+ $this->text = $text;
- // $goodStr = wordwrap( $goodStr ); // Moodle
- $goodStr = wordwrap( $goodStr, 78 );
+ $this->_converted = true;
+ }
- //make sure there are no more than 3 linebreaks in a row and trim whitespace
- $goodStr = preg_replace("/\r\n?|\f/", "\n", $goodStr);
- $goodStr = preg_replace("/\n(\s*\n){2}/", "\n\n\n", $goodStr);
- $goodStr = preg_replace("/[ \t]+(\n|$)/", "$1", $goodStr);
- $goodStr = preg_replace("/^\n*|\n*$/", '', $goodStr);
+ /**
+ * Helper function called by preg_replace() on link replacement.
+ *
+ * Maintains an internal list of links to be displayed at the end of the
+ * text, with numeric indices to the original point in the text they
+ * appeared. Also makes an effort at identifying and handling absolute
+ * and relative links.
+ *
+ * @param string $link URL of the link
+ * @param string $display Part of the text to associate number with
+ * @access private
+ * @return string
+ */
+ function _build_link_list( $link, $display )
+ {
+ if ( !$this->_do_links ) return $display;
+
+ if ( substr($link, 0, 7) == 'http://' || substr($link, 0, 8) == 'https://' ||
+ substr($link, 0, 7) == 'mailto:' ) {
+ $this->_link_count++;
+ $this->_link_list .= "[" . $this->_link_count . "] $link\n";
+ $additional = ' [' . $this->_link_count . ']';
+ } elseif ( substr($link, 0, 11) == 'javascript:' ) {
+ // Don't count the link; ignore it
+ $additional = '';
+ // what about href="#anchor" ?
+ } else {
+ $this->_link_count++;
+ $this->_link_list .= "[" . $this->_link_count . "] " . $this->url;
+ if ( substr($link, 0, 1) != '/' ) {
+ $this->_link_list .= '/';
+ }
+ $this->_link_list .= "$link\n";
+ $additional = ' [' . $this->_link_count . ']';
+ }
- return $goodStr;
+ return $display . $additional;
+ }
+
+ /**
+ * Helper function for PRE body conversion.
+ *
+ * @param string HTML content
+ * @access private
+ */
+ function _convert_pre(&$text)
+ {
+ while(preg_match('/<pre[^>]*>(.*)<\/pre>/ismU', $text, $matches))
+ {
+ $result = preg_replace($this->pre_search, $this->pre_replace, $matches[1]);
+ $text = preg_replace('/<pre[^>]*>.*<\/pre>/ismU', '<div><br>' . $result . '<br></div>', $text, 1);
+ }
+ }
+ /**
+ * Callback function for preg_replace_callback use.
+ *
+ * @param array PREG matches
+ * @return string
+ * @access private
+ */
+ function _preg_callback($matches)
+ {
+ switch($matches[1])
+ {
+ case 'b':
+ case 'strong':
+ return $this->_strtoupper($matches[2]);
+ case 'hr':
+ return $this->_strtoupper("\t\t". $matches[2] ."\n");
+ case 'h':
+ return $this->_strtoupper("\n\n". $matches[2] ."\n\n");
+ case 'a':
+ return $this->_build_link_list($matches[3], $matches[4]);
+ }
+ }
+
+ /**
+ * Strtoupper multibyte wrapper function
+ *
+ * @param string
+ * @return string
+ * @access private
+ */
+ function _strtoupper($str)
+ {
+ if (function_exists('mb_strtoupper'))
+ return mb_strtoupper($str);
+ else
+ return strtoupper($str);
+ }
}
?>
projects / moodle.git / commitdiff