| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * |
| 5 | * Parses for text marked as revised (insert/delete). |
| 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: Revise.php,v 1.3 2005/02/23 17:38:29 pmjones Exp $ |
| 16 | * |
| 17 | */ |
| 18 | |
| 19 | /** |
| 20 | * |
| 21 | * Parses for text marked as revised (insert/delete). |
| 22 | * |
| 23 | * @category Text |
| 24 | * |
| 25 | * @package Text_Wiki |
| 26 | * |
| 27 | * @author Paul M. Jones <pmjones@php.net> |
| 28 | * |
| 29 | */ |
| 30 | |
| 31 | class Text_Wiki_Parse_Revise extends Text_Wiki_Parse { |
| 32 | |
| 33 | |
| 34 | /** |
| 35 | * |
| 36 | * The regular expression used to parse the source text and find |
| 37 | * matches conforming to this rule. Used by the parse() method. |
| 38 | * |
| 39 | * @access public |
| 40 | * |
| 41 | * @var string |
| 42 | * |
| 43 | * @see parse() |
| 44 | * |
| 45 | */ |
| 46 | |
| 47 | var $regex = "/\@\@({*?.*}*?)\@\@/U"; |
| 48 | |
| 49 | |
| 50 | /** |
| 51 | * |
| 52 | * Config options. |
| 53 | * |
| 54 | * @access public |
| 55 | * |
| 56 | * @var array |
| 57 | * |
| 58 | */ |
| 59 | |
| 60 | var $conf = array( |
| 61 | 'delmark' => '---', |
| 62 | 'insmark' => '+++' |
| 63 | ); |
| 64 | |
| 65 | |
| 66 | /** |
| 67 | * |
| 68 | * Generates a replacement for the matched text. Token options are: |
| 69 | * |
| 70 | * 'type' => ['start'|'end'] The starting or ending point of the |
| 71 | * inserted text. The text itself is left in the source. |
| 72 | * |
| 73 | * @access public |
| 74 | * |
| 75 | * @param array &$matches The array of matches from parse(). |
| 76 | * |
| 77 | * @return string A pair of delimited tokens to be used as a |
| 78 | * placeholder in the source text surrounding the teletype text. |
| 79 | * |
| 80 | */ |
| 81 | |
| 82 | function process(&$matches) |
| 83 | { |
| 84 | $output = ''; |
| 85 | $src = $matches[1]; |
| 86 | $delmark = $this->getConf('delmark'); // --- |
| 87 | $insmark = $this->getConf('insmark'); // +++ |
| 88 | |
| 89 | // '---' must be before '+++' (if they both appear) |
| 90 | $del = strpos($src, $delmark); |
| 91 | $ins = strpos($src, $insmark); |
| 92 | |
| 93 | // if neither is found, return right away |
| 94 | if ($del === false && $ins === false) { |
| 95 | return $matches[0]; |
| 96 | } |
| 97 | |
| 98 | // handle text to be deleted |
| 99 | if ($del !== false) { |
| 100 | |
| 101 | // move forward to the end of the deletion mark |
| 102 | $del += strlen($delmark); |
| 103 | |
| 104 | if ($ins === false) { |
| 105 | // there is no insertion text following |
| 106 | $text = substr($src, $del); |
| 107 | } else { |
| 108 | // there is insertion text following, |
| 109 | // mitigate the length |
| 110 | $text = substr($src, $del, $ins - $del); |
| 111 | } |
| 112 | |
| 113 | $output .= $this->wiki->addToken( |
| 114 | $this->rule, array('type' => 'del_start') |
| 115 | ); |
| 116 | |
| 117 | $output .= $text; |
| 118 | |
| 119 | $output .= $this->wiki->addToken( |
| 120 | $this->rule, array('type' => 'del_end') |
| 121 | ); |
| 122 | } |
| 123 | |
| 124 | // handle text to be inserted |
| 125 | if ($ins !== false) { |
| 126 | |
| 127 | // move forward to the end of the insert mark |
| 128 | $ins += strlen($insmark); |
| 129 | $text = substr($src, $ins); |
| 130 | |
| 131 | $output .= $this->wiki->addToken( |
| 132 | $this->rule, array('type' => 'ins_start') |
| 133 | ); |
| 134 | |
| 135 | $output .= $text; |
| 136 | |
| 137 | $output .= $this->wiki->addToken( |
| 138 | $this->rule, array('type' => 'ins_end') |
| 139 | ); |
| 140 | } |
| 141 | |
| 142 | return $output; |
| 143 | } |
| 144 | } |
| 145 | ?> |