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[Fmsystem-commits] [17469] upgrade html2text from upstream
|
From: |
sigurdne |
|
Subject: |
[Fmsystem-commits] [17469] upgrade html2text from upstream |
|
Date: |
Mon, 25 Dec 2017 16:03:52 -0500 (EST) |
Revision: 17469
http://svn.sv.gnu.org/viewvc/?view=rev&root=fmsystem&revision=17469
Author: sigurdne
Date: 2017-12-25 16:03:52 -0500 (Mon, 25 Dec 2017)
Log Message:
-----------
upgrade html2text from upstream
Modified Paths:
--------------
trunk/phpgwapi/inc/class.html2text.inc.php
Modified: trunk/phpgwapi/inc/class.html2text.inc.php
===================================================================
--- trunk/phpgwapi/inc/class.html2text.inc.php 2017-12-25 20:32:22 UTC (rev
17468)
+++ trunk/phpgwapi/inc/class.html2text.inc.php 2017-12-25 21:03:52 UTC (rev
17469)
@@ -1,432 +1,628 @@
<?php
-/*************************************************************************
- * *
- * class.html2text.inc *
- * *
- *************************************************************************
- * *
- * Converts HTML to formatted plain text *
- * *
- * Copyright (c) 2005 Jon Abernathy <address@hidden> *
- * 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 <address@hidden> *
- * *
- * Last modified: 04/06/05 *
- * *
- * @package phpgwapi *
- * @subpackage utilities *
- ************************************************************************/
-
-
-/**
- * Takes HTML and converts it to formatted, plain text.
+/*
+ * Copyright (c) 2005-2007 Jon Abernathy <address@hidden>
*
- * Thanks to Alexander Krug (http://www.krugar.de/) to pointing out and
- * correcting an error in the regexp search array. Fixed 7/30/03.
+ * 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.
*
- * Updated set_html() function's file reading mechanism, 9/25/03.
+ * The GNU General Public License can be found at
+ * http://www.gnu.org/copyleft/gpl.html.
*
- * 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.
- *
- * @author Jon Abernathy <address@hidden>
- * @version 0.6.1
- * @since PHP 4.0.2
- * @package phpgwapi
- * @subpackage utilities
+ * 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.
*/
+
+
class html2text
{
+ const ENCODING = 'UTF-8';
- /**
- * Contains the HTML content to convert.
- *
- * @var string $html
- * @access public
- */
- var $html;
+ protected $htmlFuncFlags;
- /**
- * Contains the converted, formatted text.
- *
- * @var string $text
- * @access public
- */
- var $text;
+ /**
+ * Contains the HTML content to convert.
+ *
+ * @type string
+ */
+ protected $html;
- /**
- * Maximum width of the formatted text, in columns.
- *
- * @var integer $width
- * @access public
- */
- var $width = 70;
+ /**
+ * Contains the converted, formatted text.
+ *
+ * @type string
+ */
+ protected $text;
- /**
- * 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
- '/<script[^>]*>.*?<\/script>/i', // <script>s
- '/<!-- .* -->/', // Comments
- '/<h[123][^>]*>(.+?)<\/h[123]>/ie', // H1 - H3
- '/<h[456][^>]*>(.+?)<\/h[456]>/ie', // H4 - H6
- '/<p[^>]*>/i', // <P>
- '/<br[^>]*>/i', // <br>
- '/<b[^>]*>(.+?)<\/b>/ie', // <b>
- '/<i[^>]*>(.+?)<\/i>/i', // <i>
- '/(<ul[^>]*>|<\/ul>)/i', // <ul> and </ul>
- '/(<ol[^>]*>|<\/ol>)/i', // <ol> and </ol>
- '/<li[^>]*>/i', // <li>
- '/<a href="([^"]+)"[^>]*>(.+?)<\/a>/ie', // <a href="">
- '/<hr[^>]*>/i', // <hr>
- '/(<table[^>]*>|<\/table>)/i', // <table> and </table>
- '/(<tr[^>]*>|<\/tr>)/i', // <tr> and </tr>
- '/<td[^>]*>(.+?)<\/td>/i', // <td> and </td>
- '/<th[^>]*>(.+?)<\/th>/i', // <th> and </th>
- '/<style[^>]*>.*?<\/style>/i', //<style>s
- '/ /i',
- '/"/i',
- '/>/i',
- '/</i',
- '/&/i',
- '/©/i',
- '/™/i',
- '/“/',
- '/”/',
- '/–/',
- '/’/',
- '/&/',
- '/©/',
- '/™/',
- '/—/',
- '/“/',
- '/”/',
- '/•/',
- '/®/i',
- '/•/i',
- '/&[&;]+;/i'
- );
+ /**
+ * List of preg* regular expression patterns to search for,
+ * used in conjunction with $replace.
+ *
+ * @type array
+ * @see $replace
+ */
+ protected $search = array(
+ "/\r/", // Non-legal
carriage return
+ "/[\n\t]+/", // Newlines and tabs
+ '/<head\b[^>]*>.*?<\/head>/i', // <head>
+ '/<script\b[^>]*>.*?<\/script>/i', // <script>s --
which strip_tags supposedly has problems with
+ '/<style\b[^>]*>.*?<\/style>/i', // <style>s -- which
strip_tags supposedly has problems with
+ '/<i\b[^>]*>(.*?)<\/i>/i', // <i>
+ '/<em\b[^>]*>(.*?)<\/em>/i', // <em>
+ '/(<ul\b[^>]*>|<\/ul>)/i', // <ul> and </ul>
+ '/(<ol\b[^>]*>|<\/ol>)/i', // <ol> and </ol>
+ '/(<dl\b[^>]*>|<\/dl>)/i', // <dl> and </dl>
+ '/<li\b[^>]*>(.*?)<\/li>/i', // <li> and </li>
+ '/<dd\b[^>]*>(.*?)<\/dd>/i', // <dd> and </dd>
+ '/<dt\b[^>]*>(.*?)<\/dt>/i', // <dt> and </dt>
+ '/<li\b[^>]*>/i', // <li>
+ '/<hr\b[^>]*>/i', // <hr>
+ '/<div\b[^>]*>/i', // <div>
+ '/(<table\b[^>]*>|<\/table>)/i', // <table> and
</table>
+ '/(<tr\b[^>]*>|<\/tr>)/i', // <tr> and </tr>
+ '/<td\b[^>]*>(.*?)<\/td>/i', // <td> and </td>
+ '/<span class="_html2text_ignore">.+?<\/span>/i', // <span
class="_html2text_ignore">...</span>
+ '/<(img)\b[^>]*alt=\"([^>"]+)\"[^>]*>/i', // <img> with alt tag
+ );
- /**
- * List of pattern replacements corresponding to patterns searched.
- *
- * @var array $replace
- * @access public
- * @see $search
- */
- var $replace = array(
- '', // Non-legal carriage
return
- ' ', // Newlines and tabs
- '', // <script>s
- '', // Comments
- "strtoupper(\"\n\n\\1\n\n\")", // H1 - H3
- "ucwords(\"\n\n\\1\n\n\")", // H4 - H6
- "\n\n\t", // <P>
- "\n", // <br>
- 'strtoupper("\\1")', // <b>
- '_\\1_', // <i>
- "\n\n", // <ul> and </ul>
- "\n\n", // <ol> and </ol>
- "\t*", // <li>
- '$this->_build_link_list($link_count++, "\\1", "\\2")',
-
// <a href="">
- "\n-------------------------\n", // <hr>
- "\n\n", // <table> and </table>
- "\n", // <tr> and </tr>
- "\t\t\\1\n", // <td> and </td>
- "strtoupper(\"\t\t\\1\n\")", // <th> and </th>
- '', // <style>s
- ' ',
- '"',
- '>',
- '<',
- '&',
- '(c)',
- '(tm)',
- '"',
- '"',
- '-',
- "'",
- '&',
- '(c)',
- '(tm)',
- '--',
- '"',
- '"',
- '*',
- '(R)',
- '*',
- ''
- );
+ /**
+ * List of pattern replacements corresponding to patterns searched.
+ *
+ * @type array
+ * @see $search
+ */
+ protected $replace = array(
+ '', // Non-legal carriage return
+ ' ', // Newlines and tabs
+ '', // <head>
+ '', // <script>s -- which strip_tags
supposedly has problems with
+ '', // <style>s -- which strip_tags
supposedly has problems with
+ '_\\1_', // <i>
+ '_\\1_', // <em>
+ "\n\n", // <ul> and </ul>
+ "\n\n", // <ol> and </ol>
+ "\n\n", // <dl> and </dl>
+ "\t* \\1\n", // <li> and </li>
+ " \\1\n", // <dd> and </dd>
+ "\t* \\1", // <dt> and </dt>
+ "\n\t* ", // <li>
+ "\n-------------------------\n", // <hr>
+ "<div>\n", // <div>
+ "\n\n", // <table> and </table>
+ "\n", // <tr> and </tr>
+ "\t\t\\1\n", // <td> and </td>
+ "", // <span
class="_html2text_ignore">...</span>
+ '[\\2]', // <img> with alt tag
+ );
- /**
- * 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 = '';
+ /**
+ * List of preg* regular expression patterns to search for,
+ * used in conjunction with $entReplace.
+ *
+ * @type array
+ * @see $entReplace
+ */
+ protected $entSearch = array(
+ '/™/i', // TM symbol in
win-1252
+ '/—/i', // m-dash in win-1252
+ '/&(amp|#38);/i', // Ampersand: see
converter()
+ '/[ ]{2,}/', // Runs of spaces,
post-handling
+ );
- /**
- * Contains the base URL that relative links should resolve to.
- *
- * @var string $url
- * @access public
- */
- var $url;
+ /**
+ * List of pattern replacements corresponding to patterns searched.
+ *
+ * @type array
+ * @see $entSearch
+ */
+ protected $entReplace = array(
+ '™', // TM symbol
+ '—', // m-dash
+ '|+|amp|+|', // Ampersand: see converter()
+ ' ', // Runs of spaces, post-handling
+ );
- /**
- * Indicates whether content in the $html variable has been converted
yet.
- *
- * @var boolean $converted
- * @access private
- * @see $html, $text
- */
- var $_converted = false;
+ /**
+ * List of preg* regular expression patterns to search for
+ * and replace using callback function.
+ *
+ * @type array
+ */
+ protected $callbackSearch = array(
+ '/<(h)[123456]( [^>]*)?>(.*?)<\/h[123456]>/i', // h1 - h6
+ '/[ ]*<(p)( [^>]*)?>(.*?)<\/p>[ ]*/si', // <p> with
surrounding whitespace.
+ '/<(br)[^>]*>[ ]*/i', // <br> with
leading whitespace after the newline.
+ '/<(b)( [^>]*)?>(.*?)<\/b>/i', // <b>
+ '/<(strong)( [^>]*)?>(.*?)<\/strong>/i', // <strong>
+ '/<(th)( [^>]*)?>(.*?)<\/th>/i', // <th> and
</th>
+ '/<(a) [^>]*href=("|\')([^"\']+)\2([^>]*)>(.*?)<\/a>/i' // <a href="">
+ );
- /**
- * Contains URL addresses from links to be rendered in plain text.
- *
- * @var string $link_list
- * @access private
- * @see _build_link_list()
- */
- var $_link_list;
+ /**
+ * List of preg* regular expression patterns to search for in PRE body,
+ * used in conjunction with $preReplace.
+ *
+ * @type array
+ * @see $preReplace
+ */
+ protected $preSearch = array(
+ "/\n/",
+ "/\t/",
+ '/ /',
+ '/<pre[^>]*>/',
+ '/<\/pre>/'
+ );
- /**
- * 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
- * @access public
- * @return void
- */
- function __construct( $source = '', $from_file = false )
- {
- if ( !empty($source) ) {
- $this->set_html($source, $from_file);
- }
- $this->set_base_url();
- }
+ /**
+ * List of pattern replacements corresponding to patterns searched for PRE
body.
+ *
+ * @type array
+ * @see $preSearch
+ */
+ protected $preReplace = array(
+ '<br>',
+ ' ',
+ ' ',
+ '',
+ '',
+ );
- /**
- * 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 )
- {
- $this->html = $source;
+ /**
+ * Temporary workspace used during PRE processing.
+ *
+ * @type string
+ */
+ protected $preContent = '';
- if ( $from_file && file_exists($source) ) {
- $fp = fopen($source, 'r');
- $this->html = fread($fp, filesize($source));
- fclose($fp);
- }
+ /**
+ * Contains the base URL that relative links should resolve to.
+ *
+ * @type string
+ */
+ protected $baseurl = '';
- $this->_converted = false;
- }
+ /**
+ * Indicates whether content in the $html variable has been converted yet.
+ *
+ * @type boolean
+ * @see $html, $text
+ */
+ protected $converted = false;
- /**
- * Returns the text, converted from HTML.
- *
- * @access public
- * @return string
- */
- function get_text()
- {
- if ( !$this->_converted ) {
- $this->_convert();
- }
+ /**
+ * Contains URL addresses from links to be rendered in plain text.
+ *
+ * @type array
+ * @see buildlinkList()
+ */
+ protected $linkList = array();
- return $this->text;
- }
+ /**
+ * Various configuration options (able to be set in the constructor)
+ *
+ * @type array
+ */
+ protected $options = array(
+ 'do_links' => 'inline', // 'none'
+ // 'inline' (show links inline)
+ // 'nextline' (show links on the next line)
+ // 'table' (if a table of link URLs should be
listed after the text.
+ // 'bbcode' (show links as bbcode)
- /**
- * Prints the text, converted from HTML.
- *
- * @access public
- * @return void
- */
- function print_text()
- {
- print $this->get_text();
- }
+ 'width' => 70, // 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.
+ );
- /**
- * Alias to print_text(), operates identically.
- *
- * @access public
- * @return void
- * @see print_text()
- */
- function p()
- {
- print $this->get_text();
- }
+ private function legacyConstruct($html = '', $fromFile = false, array
$options = array())
+ {
+ $this->set_html($html, $fromFile);
+ $this->options = array_merge($this->options, $options);
+ }
- /**
- * 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;
- }
- }
+ /**
+ * @param string $html Source HTML
+ * @param array $options Set configuration options
+ */
+ public function __construct($html = '', $options = array())
+ {
+ // for backwards compatibility
+ if (!is_array($options)) {
+ return call_user_func_array(array($this, 'legacyConstruct'),
func_get_args());
+ }
- /**
- * Sets a base URL to handle relative links.
- *
- * @access public
- * @return void
- */
- function set_base_url( $url = '' )
- {
- if ( empty($url) ) {
- $this->url = 'http://' . $_SERVER['HTTP_HOST'];
- } else {
- // Strip any trailing slashes for consistency (relative
- // URLs may already start with a slash like
"/file.html")
- if ( substr($url, -1) == '/' ) {
- $url = substr($url, 0, -1);
- }
- $this->url = $url;
- }
- }
+ $this->html = $html;
+ $this->options = array_merge($this->options, $options);
+ $this->htmlFuncFlags = (PHP_VERSION_ID < 50400)
+ ? ENT_COMPAT
+ : ENT_COMPAT | ENT_HTML5;
+ }
- /**
- * 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
- $link_count = 1;
- $this->_link_list = '';
+ /**
+ * Get the source HTML
+ *
+ * @return string
+ */
+ public function getHtml()
+ {
+ return $this->html;
+ }
- $text = trim(stripslashes($this->html));
+ /**
+ * Set the source HTML
+ *
+ * @param string $html HTML source content
+ */
+ public function setHtml($html)
+ {
+ $this->html = $html;
+ $this->converted = false;
+ }
- // Run our defined search-and-replace
- $text = preg_replace($this->search, $this->replace, $text);
+ /**
+ * @deprecated
+ */
+ public function set_html($html, $from_file = false)
+ {
+ if ($from_file) {
+ throw new \InvalidArgumentException("Argument from_file no longer
supported");
+ }
- // Strip any other HTML tags
- $text = strip_tags($text, $this->allowed_tags);
+ return $this->setHtml($html);
+ }
- // Bring down number of empty lines to 2 max
- $text = preg_replace("/\n\s+\n/", "\n", $text);
- $text = preg_replace("/[\n]{3,}/", "\n\n", $text);
+ /**
+ * Returns the text, converted from HTML.
+ *
+ * @return string
+ */
+ public function getText()
+ {
+ if (!$this->converted) {
+ $this->convert();
+ }
- // Add link list
- if ( !empty($this->_link_list) ) {
- $text .= "\n\nLinks:\n------\n" . $this->_link_list;
- }
+ return $this->text;
+ }
- // Wrap the text to a readable format
- // for PHP versions >= 4.0.2. Default width is 75
- $text = wordwrap($text, $this->width);
+ /**
+ * @deprecated
+ */
+ public function get_text()
+ {
+ return $this->getText();
+ }
- $this->text = $text;
+ /**
+ * @deprecated
+ */
+ public function print_text()
+ {
+ print $this->getText();
+ }
- $this->_converted = true;
- }
+ /**
+ * @deprecated
+ */
+ public function p()
+ {
+ return $this->print_text();
+ }
- /**
- * 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 integer $link_count Counter tracking current link number
- * @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_count, $link, $display)
- {
- if ( substr($link, 0, 7) == 'http://' || substr($link, 0, 8) ==
'https://' ||
- substr($link, 0, 7) == 'mailto:' ) {
- $this->_link_list .= "[$link_count] $link\n";
- } else {
- $this->_link_list .= "[$link_count] " . $this->url;
- if ( substr($link, 0, 1) != '/' ) {
- $this->_link_list .= '/';
- }
- $this->_link_list .= "$link\n";
- }
+ /**
+ * Sets a base URL to handle relative links.
+ *
+ * @param string $baseurl
+ */
+ public function setBaseUrl($baseurl)
+ {
+ $this->baseurl = $baseurl;
+ }
- return $display . ' [' . $link_count . ']';
- }
+ /**
+ * @deprecated
+ */
+ public function set_base_url($baseurl)
+ {
+ return $this->setBaseUrl($baseurl);
+ }
-}
+ protected function convert()
+ {
+ $origEncoding = mb_internal_encoding();
+ mb_internal_encoding(self::ENCODING);
+ $this->doConvert();
+
+ mb_internal_encoding($origEncoding);
+ }
+
+ protected function doConvert()
+ {
+ $this->linkList = array();
+
+ $text = trim($this->html);
+
+ $this->converter($text);
+
+ if ($this->linkList) {
+ $text .= "\n\nLinks:\n------\n";
+ foreach ($this->linkList as $i => $url) {
+ $text .= '[' . ($i + 1) . '] ' . $url . "\n";
+ }
+ }
+
+ $this->text = $text;
+
+ $this->converted = true;
+ }
+
+ protected function converter(&$text)
+ {
+ $this->convertBlockquotes($text);
+ $this->convertPre($text);
+ $text = preg_replace($this->search, $this->replace, $text);
+ $text = preg_replace_callback($this->callbackSearch, array($this,
'pregCallback'), $text);
+ $text = strip_tags($text);
+ $text = preg_replace($this->entSearch, $this->entReplace, $text);
+ $text = html_entity_decode($text, $this->htmlFuncFlags,
self::ENCODING);
+
+ // Remove unknown/unhandled entities (this cannot be done in
search-and-replace block)
+ $text = preg_replace('/&([a-zA-Z0-9]{2,6}|#[0-9]{2,4});/', '', $text);
+
+ // Convert "|+|amp|+|" into "&", need to be done after handling of
unknown entities
+ // This properly handles situation of "&quot;" in input string
+ $text = str_replace('|+|amp|+|', '&', $text);
+
+ // Normalise empty lines
+ $text = preg_replace("/\n\s+\n/", "\n\n", $text);
+ $text = preg_replace("/[\n]{3,}/", "\n\n", $text);
+
+ // remove leading empty lines (can be produced by eg. P tag on the
beginning)
+ $text = ltrim($text, "\n");
+
+ if ($this->options['width'] > 0) {
+ $text = wordwrap($text, $this->options['width']);
+ }
+ }
+
+ /**
+ * 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
+ * @param null $linkOverride
+ * @return string
+ */
+ protected function buildlinkList($link, $display, $linkOverride = null)
+ {
+ $linkMethod = ($linkOverride) ? $linkOverride :
$this->options['do_links'];
+ if ($linkMethod == 'none') {
+ return $display;
+ }
+
+ // Ignored link types
+ if (preg_match('!^(javascript:|mailto:|#)!i', $link)) {
+ return $display;
+ }
+
+ if (preg_match('!^([a-z][a-z0-9.+-]+:)!i', $link)) {
+ $url = $link;
+ } else {
+ $url = $this->baseurl;
+ if (mb_substr($link, 0, 1) != '/') {
+ $url .= '/';
+ }
+ $url .= $link;
+ }
+
+ if ($linkMethod == 'table') {
+ if (($index = array_search($url, $this->linkList)) === false) {
+ $index = count($this->linkList);
+ $this->linkList[] = $url;
+ }
+
+ return $display . ' [' . ($index + 1) . ']';
+ } elseif ($linkMethod == 'nextline') {
+ if ($url === $display) {
+ return $display;
+ }
+ return $display . "\n[" . $url . ']';
+ } elseif ($linkMethod == 'bbcode') {
+ return sprintf('[url=%s]%s[/url]', $url, $display);
+ } else { // link_method defaults to inline
+ if ($url === $display) {
+ return $display;
+ }
+ return $display . ' [' . $url . ']';
+ }
+ }
+
+ protected function convertPre(&$text)
+ {
+ // get the content of PRE element
+ while (preg_match('/<pre[^>]*>(.*)<\/pre>/ismU', $text, $matches)) {
+ // Replace br tags with newlines to prevent the search-and-replace
callback from killing whitespace
+ $this->preContent = preg_replace('/(<br\b[^>]*>)/i', "\n",
$matches[1]);
+
+ // Run our defined tags search-and-replace with callback
+ $this->preContent = preg_replace_callback(
+ $this->callbackSearch,
+ array($this, 'pregCallback'),
+ $this->preContent
+ );
+
+ // convert the content
+ $this->preContent = sprintf(
+ '<div><br>%s<br></div>',
+ preg_replace($this->preSearch, $this->preReplace,
$this->preContent)
+ );
+
+ // replace the content (use callback because content can contain
$0 variable)
+ $text = preg_replace_callback(
+ '/<pre[^>]*>.*<\/pre>/ismU',
+ array($this, 'pregPreCallback'),
+ $text,
+ 1
+ );
+
+ // free memory
+ $this->preContent = '';
+ }
+ }
+
+ /**
+ * Helper function for BLOCKQUOTE body conversion.
+ *
+ * @param string $text HTML content
+ */
+ protected function convertBlockquotes(&$text)
+ {
+ if (preg_match_all('/<\/*blockquote[^>]*>/i', $text, $matches,
PREG_OFFSET_CAPTURE)) {
+ $originalText = $text;
+ $start = 0;
+ $taglen = 0;
+ $level = 0;
+ $diff = 0;
+ foreach ($matches[0] as $m) {
+ $m[1] = mb_strlen(substr($originalText, 0, $m[1]));
+ if ($m[0][0] == '<' && $m[0][1] == '/') {
+ $level--;
+ if ($level < 0) {
+ $level = 0; // malformed HTML: go to next blockquote
+ } elseif ($level > 0) {
+ // skip inner blockquote
+ } else {
+ $end = $m[1];
+ $len = $end - $taglen - $start;
+ // Get blockquote content
+ $body = mb_substr($text, $start + $taglen - $diff,
$len);
+
+ // Set text width
+ $pWidth = $this->options['width'];
+ if ($this->options['width'] > 0)
$this->options['width'] -= 2;
+ // Convert blockquote content
+ $body = trim($body);
+ $this->converter($body);
+ // Add citation markers and create PRE block
+ $body = preg_replace('/((^|\n)>*)/', '\\1> ',
trim($body));
+ $body = '<pre>' . htmlspecialchars($body,
$this->htmlFuncFlags, self::ENCODING) . '</pre>';
+ // Re-set text width
+ $this->options['width'] = $pWidth;
+ // Replace content
+ $text = mb_substr($text, 0, $start - $diff)
+ . $body
+ . mb_substr($text, $end + mb_strlen($m[0]) -
$diff);
+
+ $diff += $len + $taglen + mb_strlen($m[0]) -
mb_strlen($body);
+ unset($body);
+ }
+ } else {
+ if ($level == 0) {
+ $start = $m[1];
+ $taglen = mb_strlen($m[0]);
+ }
+ $level++;
+ }
+ }
+ }
+ }
+
+ /**
+ * Callback function for preg_replace_callback use.
+ *
+ * @param array $matches PREG matches
+ * @return string
+ */
+ protected function pregCallback($matches)
+ {
+ switch (mb_strtolower($matches[1])) {
+ case 'p':
+ // Replace newlines with spaces.
+ $para = str_replace("\n", " ", $matches[3]);
+
+ // Trim trailing and leading whitespace within the tag.
+ $para = trim($para);
+
+ // Add trailing newlines for this para.
+ return "\n" . $para . "\n";
+ case 'br':
+ return "\n";
+ case 'b':
+ case 'strong':
+ return $this->toupper($matches[3]);
+ case 'th':
+ return $this->toupper("\t\t" . $matches[3] . "\n");
+ case 'h':
+ return $this->toupper("\n\n" . $matches[3] . "\n\n");
+ case 'a':
+ // override the link method
+ $linkOverride = null;
+ if (preg_match('/_html2text_link_(\w+)/', $matches[4],
$linkOverrideMatch)) {
+ $linkOverride = $linkOverrideMatch[1];
+ }
+ // Remove spaces in URL (#1487805)
+ $url = str_replace(' ', '', $matches[3]);
+
+ return $this->buildlinkList($url, $matches[5], $linkOverride);
+ }
+
+ return '';
+ }
+
+ /**
+ * Callback function for preg_replace_callback use in PRE content handler.
+ *
+ * @param array $matches PREG matches
+ * @return string
+ */
+ protected function pregPreCallback(/** @noinspection
PhpUnusedParameterInspection */ $matches)
+ {
+ return $this->preContent;
+ }
+
+ /**
+ * Strtoupper function with HTML tags and entities handling.
+ *
+ * @param string $str Text to convert
+ * @return string Converted text
+ */
+ protected function toupper($str)
+ {
+ // string can contain HTML tags
+ $chunks = preg_split('/(<[^>]*>)/', $str, -1, PREG_SPLIT_NO_EMPTY |
PREG_SPLIT_DELIM_CAPTURE);
+
+ // convert toupper only the text between HTML tags
+ foreach ($chunks as $i => $chunk) {
+ if ($chunk[0] != '<') {
+ $chunks[$i] = $this->strtoupper($chunk);
+ }
+ }
+
+ return implode($chunks);
+ }
+
+ /**
+ * Strtoupper multibyte wrapper function with HTML entities handling.
+ *
+ * @param string $str Text to convert
+ * @return string Converted text
+ */
+ protected function strtoupper($str)
+ {
+ $str = html_entity_decode($str, $this->htmlFuncFlags, self::ENCODING);
+ $str = mb_strtoupper($str);
+ $str = htmlspecialchars($str, $this->htmlFuncFlags, self::ENCODING);
+
+ return $str;
+ }
+}
\ No newline at end of file
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