Source for file Freelink.php
Documentation is available at Freelink.php
// $Id: Freelink.php,v 1.2 2004/09/25 19:05:13 pmjones Exp $
* This class implements a Text_Wiki_Parse to find source text marked as a
* wiki freelink, and automatically create a link to that page.
* A freelink is any page name not conforming to the standard
* StudlyCapsStyle for a wiki page name. For example, a page normally
* named MyHomePage can be renamed and referred to as ((My Home Page)) --
* note the spaces in the page name. You can also make a "nice-looking"
* link without renaming the target page; e.g., ((MyHomePage|My Home
* Page)). Finally, you can use named anchors on the target page:
* ((MyHomePage|My Home Page#Section1)).
* @author Paul M. Jones <pmjones@ciaweb.net>
* Constructor. We override the Text_Wiki_Parse constructor so we can
* explicitly comment each part of the $regex property.
* @param object &$obj The calling "parent" Text_Wiki object.
"\\(\\(" . // double open-parens
"(" . // START freelink page patter
"[-A-Za-z0-9 _+\\/.,;:!?'\"\\[\\]\\{\\}&\xc0-\xff]+" . // 1 or more of just about any character
")" . // END freelink page pattern
"(" . // START display-name
"\|" . // a pipe to start the display name
"[-A-Za-z0-9 _+\\/.,;:!?'\"\\[\\]\\{\\}&\xc0-\xff]+" . // 1 or more of just about any character
")?" . // END display-name pattern 0 or 1
"(" . // START pattern for named anchors
"[-A-Za-z0-9_:.]*" . // 0 or more alpha, digit, underscore
")?" . // END named anchors pattern 0 or 1
"()\\)\\)" . // double close-parens
* Generates a replacement for the matched text. Token options are:
* 'page' => the wiki page name (e.g., HomePage).
* 'text' => alternative text to be displayed in place of the wiki
* 'anchor' => a named anchor on the target wiki page
* @param array &$matches The array of matches from parse().
* @return A delimited token to be used as a placeholder in
* the source text, plus any text priot to the match.
// use nice variable names
// get rid of the leading # from the anchor, if any
$anchor = substr($matches[3 ], 1 );
// is the page given a new text appearance?
// yes, strip the leading | character
// return a token placeholder
return $this->wiki->addToken ($this->rule, $options);
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