145 lines
3.3 KiB
PHP
145 lines
3.3 KiB
PHP
<?php
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/**
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*
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* Parses for text marked as revised (insert/delete).
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*
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* @category Text
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*
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* @package Text_Wiki
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*
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* @author Paul M. Jones <pmjones@php.net>
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*
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* @license LGPL
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*
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* @version $Id: Revise.php,v 1.3 2005/02/23 17:38:29 pmjones Exp $
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*
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*/
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/**
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*
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* Parses for text marked as revised (insert/delete).
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*
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* @category Text
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*
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* @package Text_Wiki
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*
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* @author Paul M. Jones <pmjones@php.net>
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*
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*/
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class Text_Wiki_Parse_Revise extends Text_Wiki_Parse {
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/**
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*
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* The regular expression used to parse the source text and find
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* matches conforming to this rule. Used by the parse() method.
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*
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* @access public
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*
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* @var string
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*
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* @see parse()
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*
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*/
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var $regex = "/\@\@({*?.*}*?)\@\@/U";
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/**
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*
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* Config options.
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*
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* @access public
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*
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* @var array
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*
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*/
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var $conf = array(
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'delmark' => '---',
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'insmark' => '+++'
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);
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/**
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*
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* Generates a replacement for the matched text. Token options are:
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*
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* 'type' => ['start'|'end'] The starting or ending point of the
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* inserted text. The text itself is left in the source.
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*
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* @access public
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*
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* @param array &$matches The array of matches from parse().
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*
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* @return string A pair of delimited tokens to be used as a
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* placeholder in the source text surrounding the teletype text.
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*
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*/
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function process(&$matches)
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{
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$output = '';
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$src = $matches[1];
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$delmark = $this->getConf('delmark'); // ---
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$insmark = $this->getConf('insmark'); // +++
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// '---' must be before '+++' (if they both appear)
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$del = strpos($src, $delmark);
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$ins = strpos($src, $insmark);
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// if neither is found, return right away
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if ($del === false && $ins === false) {
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return $matches[0];
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}
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// handle text to be deleted
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if ($del !== false) {
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// move forward to the end of the deletion mark
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$del += strlen($delmark);
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if ($ins === false) {
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// there is no insertion text following
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$text = substr($src, $del);
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} else {
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// there is insertion text following,
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// mitigate the length
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$text = substr($src, $del, $ins - $del);
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}
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$output .= $this->wiki->addToken(
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$this->rule, array('type' => 'del_start')
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);
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$output .= $text;
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$output .= $this->wiki->addToken(
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$this->rule, array('type' => 'del_end')
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);
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}
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// handle text to be inserted
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if ($ins !== false) {
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// move forward to the end of the insert mark
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$ins += strlen($insmark);
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$text = substr($src, $ins);
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$output .= $this->wiki->addToken(
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$this->rule, array('type' => 'ins_start')
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);
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$output .= $text;
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$output .= $this->wiki->addToken(
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$this->rule, array('type' => 'ins_end')
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);
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}
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return $output;
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}
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}
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?>
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