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<?php
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/**
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* ParseWbLink
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* @param string $sContent
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* @return array details of all found Wblink-Tags
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* @description parse
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*/
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function _parseWbLink(&$sContent)
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{
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$aResults = array();
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$aMatches = array();
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$sPattern = '/\[wblink([0-9]+)(\#([^\?]+))?(\?([^\]]+))?\]/is';
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if (preg_match_all($sPattern, $sContent, $aMatches, PREG_SET_ORDER)) {
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foreach ($aMatches as $aTag) {
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$aResults[$aTag[0]] = array();
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$aResults[$aTag[0]]['pageid'] = $aTag[1];
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$aResults[$aTag[0]]['ancor'] = (isset($aTag[3]) ? $aTag[3] : '');
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$aResults[$aTag[0]]['params'] = array();
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$aTag[5] = (isset($aTag[5]) ? $aTag[5] : '');
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$aTmpArgs = preg_split('/&|&/i', $aTag[5], -1, PREG_SPLIT_NO_EMPTY);
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foreach ($aTmpArgs as $sArgument) {
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$aArgs = explode('=', $sArgument);
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$aResults[$aTag[0]]['params'][$aArgs[0]] = $aArgs[1];
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}
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}
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}
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return $aResults;
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}
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/*
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* @param string $content : contains the full content of the current page
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* @return string
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* @description replace all "[wblink{page_id}{?addon=n&item=n...}]" with real links to accessfiles<br />
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* All modules must offer the class 'WbLink'(implementing 'WbLinkAbstract'), to be taken into consideration.
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*/
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function doFilterWbLink($sContent)
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{
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$oDb = WbDatabase::getInstance();
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$oReg = WbAdaptor::getInstance();
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$aReplaceList = array();
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$aTagList = _parseWblink($sContent);
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// iterate list if replacements are available
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foreach ($aTagList as $sKey=>$aTag) {
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// set link on failure ('#' means, still stay on current page)
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$aReplaceList[$sKey] = '#';
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// sanitize possible ancor
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$aTag['ancor'] = ($aTag['ancor'] == '' ? '' : '#'.$aTag['ancor']);
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// handle normal pages links
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if (sizeof($aTag['params']) == 0) {
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$sql = 'SELECT `link` FROM `'.$oDb->TablePrefix.'pages` WHERE `page_id` = '.(int)$aTag['pageid'];
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if(($sLink = $oDb->get_one($sql)))
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{
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$sLink = trim(str_replace('\\', '/', $sLink), '/');
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// test if valid accessfile is available
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if(is_readable($oReg->AppPath.$oReg->PagesDir.$sLink.$oReg->PageExtension))
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{
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// create absolute URL
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$aReplaceList[$sKey] = $oReg->AppUrl.$oReg->PagesDir.$sLink.$oReg->PageExtension.$aTag['ancor'];
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}
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}
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// handle links of modules
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} else {
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// build name of the needed class
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$sClass = 'm_'.$aTag['params']['addon'].'_WbLink';
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// remove addon name from replacement array
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// unset($aReplacement['Args']['addon']);
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if(class_exists($sClass))
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{
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// instantiate class
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$oWbLink = new $sClass();
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// the class must implement the interface
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if($oWbLink instanceof WbLinkAbstract)
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{
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$aTag['params']['pageid'] = $aTag['pageid'];
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$aTag['params']['ancor'] = $aTag['ancor'];
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// create real link from replacement data
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$aReplaceList[$sKey] = $oWbLink->makeLinkFromTag($aTag['params']);
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}
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}
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}
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// extract indexes into a new array
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$aSearchList = array_keys($aReplaceList);
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// replace all identified wblink-tags in content
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$sContent = str_replace($aSearchList, $aReplaceList, $sContent);
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}
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return $sContent;
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}
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// $oDb = WbDatabase::getInstance();
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// $oReg = WbAdaptor::getInstance();
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// $aReplaceList = array();
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// $sPattern = '/\[wblink([0-9]+)\??([^\]]*)\]/is';
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// if(preg_match_all($sPattern,$sContent,$aMatches))
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// {
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// // iterate through all found matches
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// foreach($aMatches[0] as $iKey => $sKeyString )
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// {
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// $aReplaceList[$sKeyString] = array();
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// // use original Tag to save PageId
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// $aReplaceList[$sKeyString]['PageId'] = $aMatches[1][$iKey];
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// // if there are additional arguments given
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// if($aMatches[2][$iKey])
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// {
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// $aReplaceList[$sKeyString]['Args'] = array();
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// $aArgs = preg_split('/&|&/i', $aMatches[2][$iKey], -1, PREG_SPLIT_NO_EMPTY);
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// foreach($aArgs as $sArgument)
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// {
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// $aTmp = explode('=', $sArgument);
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// $aReplaceList[$sKeyString]['Args'][$aTmp[0]] = $aTmp[1];
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// }
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// }
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// }
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// if(sizeof($aReplaceList) > 0)
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// { // iterate list if replacements are available
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// foreach($aReplaceList as $sKey => $aReplacement)
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// {
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// // set link on failure ('#' means, still stay on current page)
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// $aReplaceList[$sKey] = '#';
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// // handle normal pages links
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// if(!isset($aReplacement['Args']))
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// {
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// // read corresponding link from table 'pages'
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// $sql = 'SELECT `link` FROM `'.$oDb->TablePrefix.'pages` WHERE `page_id` = '.(int)$aReplacement['PageId'];
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// if(($sLink = $oDb->get_one($sql)))
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// {
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// $sLink = trim(str_replace('\\', '/', $sLink), '/');
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// // test if valid accessfile is available
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// if(is_readable($oReg->AppPath.$oReg->PagesDir.$sLink.$oReg->PageExtension))
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// {
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// // create absolute URL
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// $aReplaceList[$sKey] = $oReg->AppUrl.$oReg->PagesDir.$sLink.$oReg->PageExtension;
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// }
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// }
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// // handle links of modules
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// }else
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// {
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// // build name of the needed class
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// $sClass = 'm_'.$aReplacement['Args']['addon'].'_WbLink';
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// // remove addon name from replacement array
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// unset($aReplacement['Args']['addon']);
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// if(class_exists($sClass))
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// {
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// // instantiate class
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// $oWbLink = new $sClass();
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// // the class must implement the interface
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// if($oWbLink instanceof WbLinkAbstract)
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// {
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// // create real link from replacement data
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// $aReplaceList[$sKey] = $oWbLink->makeLinkFromTag($aReplacement['Args']);
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// }
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// }
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// }
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// }
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// // extract indexes into a new array
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// $aSearchList = array_keys($aReplaceList);
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// // replace all identified wblink-tags in content
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// $sContent = str_replace($aSearchList, $aReplaceList, $sContent);
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// }
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// }
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// return $sContent;
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// }
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