146 lines
3.5 KiB
PHP
146 lines
3.5 KiB
PHP
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<?php
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/**
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*
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* Parses for paragraph blocks.
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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: Paragraph.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 paragraph blocks.
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*
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* This class implements a Text_Wiki rule to find sections of the source
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* text that are paragraphs. A para is any line not starting with a token
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* delimiter, followed by two newlines.
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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_Paragraph extends Text_Wiki_Parse {
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/**
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*
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* The regular expression used to find source text matching this
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* rule.
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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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*/
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var $regex = "/^.*?\n\n/m";
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var $conf = array(
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'skip' => array(
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'blockquote', // are we sure about this one?
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'code',
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'heading',
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'horiz',
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'deflist',
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'table',
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'list',
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'toc'
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)
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);
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/**
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*
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* Generates a token entry for the matched text. Token options are:
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*
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* 'start' => The starting point of the paragraph.
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*
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* 'end' => The ending point of the paragraph.
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*
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* @access public
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*
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* @param array &$matches The array of matches from parse().
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*
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* @return A delimited token number to be used as a placeholder in
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* the source text.
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*
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*/
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function process(&$matches)
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{
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$delim = $this->wiki->delim;
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// was anything there?
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if (trim($matches[0]) == '') {
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return '';
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}
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// does the match start with a delimiter?
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if (substr($matches[0], 0, 1) != $delim) {
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// no.
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$start = $this->wiki->addToken(
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$this->rule, array('type' => 'start')
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);
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$end = $this->wiki->addToken(
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$this->rule, array('type' => 'end')
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);
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return $start . trim($matches[0]) . $end;
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}
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// the line starts with a delimiter. read in the delimited
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// token number, check the token, and see if we should
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// skip it.
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// loop starting at the second character (we already know
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// the first is a delimiter) until we find another
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// delimiter; the text between them is a token key number.
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$key = '';
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$len = strlen($matches[0]);
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for ($i = 1; $i < $len; $i++) {
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$char = $matches[0]{$i};
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if ($char == $delim) {
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break;
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} else {
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$key .= $char;
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}
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}
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// look at the token and see if it's skippable (if we skip,
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// it will not be marked as a paragraph)
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$token_type = strtolower($this->wiki->tokens[$key][0]);
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$skip = $this->getConf('skip', array());
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if (in_array($token_type, $skip)) {
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// this type of token should not have paragraphs applied to it.
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// return the entire matched text.
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return $matches[0];
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} else {
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$start = $this->wiki->addToken(
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$this->rule, array('type' => 'start')
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);
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$end = $this->wiki->addToken(
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$this->rule, array('type' => 'end')
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);
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return $start . trim($matches[0]) . $end;
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}
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}
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}
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?>
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