| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * |
| 5 | * Parses for interwiki links. |
| 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: Interwiki.php,v 1.4 2005/02/23 17:38:29 pmjones Exp $ |
| 16 | * |
| 17 | */ |
| 18 | |
| 19 | /** |
| 20 | * |
| 21 | * Parses for interwiki links. |
| 22 | * |
| 23 | * This class implements a Text_Wiki_Parse to find source text marked as |
| 24 | * an Interwiki link. See the regex for a detailed explanation of the |
| 25 | * text matching procedure; e.g., "InterWikiName:PageName". |
| 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_Interwiki extends Text_Wiki_Parse { |
| 36 | |
| 37 | // double-colons wont trip up now |
| 38 | var $regex = '([A-Za-z0-9_]+):((?!:)[A-Za-z0-9_\/=&~#.:;-]+)'; |
| 39 | |
| 40 | |
| 41 | /** |
| 42 | * |
| 43 | * Parser. We override the standard parser so we can |
| 44 | * find both described interwiki links and standalone links. |
| 45 | * |
| 46 | * @access public |
| 47 | * |
| 48 | * @return void |
| 49 | * |
| 50 | */ |
| 51 | |
| 52 | function parse() |
| 53 | { |
| 54 | // described interwiki links |
| 55 | $tmp_regex = '/\[' . $this->regex . ' (.+?)\]/'; |
| 56 | $this->wiki->source = preg_replace_callback( |
| 57 | $tmp_regex, |
| 58 | array(&$this, 'processDescr'), |
| 59 | $this->wiki->source |
| 60 | ); |
| 61 | |
| 62 | // standalone interwiki links |
| 63 | $tmp_regex = '/' . $this->regex . '/'; |
| 64 | $this->wiki->source = preg_replace_callback( |
| 65 | $tmp_regex, |
| 66 | array(&$this, 'process'), |
| 67 | $this->wiki->source |
| 68 | ); |
| 69 | |
| 70 | } |
| 71 | |
| 72 | |
| 73 | /** |
| 74 | * |
| 75 | * Generates a replacement for the matched standalone interwiki text. |
| 76 | * Token options are: |
| 77 | * |
| 78 | * 'site' => The key name for the Text_Wiki interwiki array map, |
| 79 | * usually the name of the interwiki site. |
| 80 | * |
| 81 | * 'page' => The page on the target interwiki to link to. |
| 82 | * |
| 83 | * 'text' => The text to display as the link. |
| 84 | * |
| 85 | * @access public |
| 86 | * |
| 87 | * @param array &$matches The array of matches from parse(). |
| 88 | * |
| 89 | * @return A delimited token to be used as a placeholder in |
| 90 | * the source text, plus any text priot to the match. |
| 91 | * |
| 92 | */ |
| 93 | |
| 94 | function process(&$matches) |
| 95 | { |
| 96 | $options = array( |
| 97 | 'site' => $matches[1], |
| 98 | 'page' => $matches[2], |
| 99 | 'text' => $matches[0] |
| 100 | ); |
| 101 | |
| 102 | return $this->wiki->addToken($this->rule, $options); |
| 103 | } |
| 104 | |
| 105 | |
| 106 | /** |
| 107 | * |
| 108 | * Generates a replacement for described interwiki links. Token |
| 109 | * options are: |
| 110 | * |
| 111 | * 'site' => The key name for the Text_Wiki interwiki array map, |
| 112 | * usually the name of the interwiki site. |
| 113 | * |
| 114 | * 'page' => The page on the target interwiki to link to. |
| 115 | * |
| 116 | * 'text' => The text to display as the link. |
| 117 | * |
| 118 | * @access public |
| 119 | * |
| 120 | * @param array &$matches The array of matches from parse(). |
| 121 | * |
| 122 | * @return A delimited token to be used as a placeholder in |
| 123 | * the source text, plus any text priot to the match. |
| 124 | * |
| 125 | */ |
| 126 | |
| 127 | function processDescr(&$matches) |
| 128 | { |
| 129 | $options = array( |
| 130 | 'site' => $matches[1], |
| 131 | 'page' => $matches[2], |
| 132 | 'text' => $matches[3] |
| 133 | ); |
| 134 | |
| 135 | return $this->wiki->addToken($this->rule, $options); |
| 136 | } |
| 137 | } |
| 138 | ?> |