| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * |
| 5 | * Parses for paragraph blocks. |
| 6 | * |
| 7 | * @category Text |
| 8 | * |
| 9 | * @package Text_Wiki |
| 10 | * |
| 11 | * @author Paul M. Jones <pmjones@php.net> |
| 12 | * |
| 13 | * @license LGPL |
| 14 | * |
| 15 | * @version $Id: Paragraph.php,v 1.3 2005/02/23 17:38:29 pmjones Exp $ |
| 16 | * |
| 17 | */ |
| 18 | |
| 19 | /** |
| 20 | * |
| 21 | * Parses for paragraph blocks. |
| 22 | * |
| 23 | * This class implements a Text_Wiki rule to find sections of the source |
| 24 | * text that are paragraphs. A para is any line not starting with a token |
| 25 | * delimiter, followed by two newlines. |
| 26 | * |
| 27 | * @category Text |
| 28 | * |
| 29 | * @package Text_Wiki |
| 30 | * |
| 31 | * @author Paul M. Jones <pmjones@php.net> |
| 32 | * |
| 33 | */ |
| 34 | |
| 35 | class Text_Wiki_Parse_Paragraph extends Text_Wiki_Parse { |
| 36 | |
| 37 | /** |
| 38 | * |
| 39 | * The regular expression used to find source text matching this |
| 40 | * rule. |
| 41 | * |
| 42 | * @access public |
| 43 | * |
| 44 | * @var string |
| 45 | * |
| 46 | */ |
| 47 | |
| 48 | var $regex = "/^.*?\n\n/m"; |
| 49 | |
| 50 | var $conf = array( |
| 51 | 'skip' => array( |
| 52 | 'blockquote', // are we sure about this one? |
| 53 | 'code', |
| 54 | 'heading', |
| 55 | 'horiz', |
| 56 | 'deflist', |
| 57 | 'table', |
| 58 | 'list', |
| 59 | 'toc' |
| 60 | ) |
| 61 | ); |
| 62 | |
| 63 | |
| 64 | /** |
| 65 | * |
| 66 | * Generates a token entry for the matched text. Token options are: |
| 67 | * |
| 68 | * 'start' => The starting point of the paragraph. |
| 69 | * |
| 70 | * 'end' => The ending point of the paragraph. |
| 71 | * |
| 72 | * @access public |
| 73 | * |
| 74 | * @param array &$matches The array of matches from parse(). |
| 75 | * |
| 76 | * @return A delimited token number to be used as a placeholder in |
| 77 | * the source text. |
| 78 | * |
| 79 | */ |
| 80 | |
| 81 | function process(&$matches) |
| 82 | { |
| 83 | $delim = $this->wiki->delim; |
| 84 | |
| 85 | // was anything there? |
| 86 | if (trim($matches[0]) == '') { |
| 87 | return ''; |
| 88 | } |
| 89 | |
| 90 | // does the match start with a delimiter? |
| 91 | if (substr($matches[0], 0, 1) != $delim) { |
| 92 | // no. |
| 93 | |
| 94 | $start = $this->wiki->addToken( |
| 95 | $this->rule, array('type' => 'start') |
| 96 | ); |
| 97 | |
| 98 | $end = $this->wiki->addToken( |
| 99 | $this->rule, array('type' => 'end') |
| 100 | ); |
| 101 | |
| 102 | return $start . trim($matches[0]) . $end; |
| 103 | } |
| 104 | |
| 105 | // the line starts with a delimiter. read in the delimited |
| 106 | // token number, check the token, and see if we should |
| 107 | // skip it. |
| 108 | |
| 109 | // loop starting at the second character (we already know |
| 110 | // the first is a delimiter) until we find another |
| 111 | // delimiter; the text between them is a token key number. |
| 112 | $key = ''; |
| 113 | $len = strlen($matches[0]); |
| 114 | for ($i = 1; $i < $len; $i++) { |
| 115 | $char = $matches[0]{$i}; |
| 116 | if ($char == $delim) { |
| 117 | break; |
| 118 | } else { |
| 119 | $key .= $char; |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | // look at the token and see if it's skippable (if we skip, |
| 124 | // it will not be marked as a paragraph) |
| 125 | $token_type = strtolower($this->wiki->tokens[$key][0]); |
| 126 | $skip = $this->getConf('skip', array()); |
| 127 | |
| 128 | if (in_array($token_type, $skip)) { |
| 129 | // this type of token should not have paragraphs applied to it. |
| 130 | // return the entire matched text. |
| 131 | return $matches[0]; |
| 132 | } else { |
| 133 | |
| 134 | $start = $this->wiki->addToken( |
| 135 | $this->rule, array('type' => 'start') |
| 136 | ); |
| 137 | |
| 138 | $end = $this->wiki->addToken( |
| 139 | $this->rule, array('type' => 'end') |
| 140 | ); |
| 141 | |
| 142 | return $start . trim($matches[0]) . $end; |
| 143 | } |
| 144 | } |
| 145 | } |
| 146 | ?> |