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Some buffing up ... no changes

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moodler 2005-03-07 16:10:52 +00:00
parent 8a0556be8c
commit ff2fc9e22d
1 changed files with 21 additions and 15 deletions
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36
lib/filterlib.php
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@ -1,5 +1,12 @@
<?php
<?php // $Id$
// Contains special functions that are particularly useful to filters
/**
* This is just a little object to define a phrase and some instructions
* for how to process it. Filters can create an array of these to pass
* to the filter_phrases function below.
**/
class filterobject {
var $phrase;
var $hreftagbegin;
@ -8,8 +15,12 @@ class filterobject {
var $fullmatch;
/// a constructor just because I like constructing
function filterobject($phrase, $hreftagbegin='<span class="highlight">', $hreftagend='</span>', $casesensitive=false, $fullmatch=false) {
$this->phrase = $phrase;
function filterobject($phrase, $hreftagbegin='<span class="highlight">',
$hreftagend='</span>',
$casesensitive=false,
$fullmatch=false) {
$this->phrase = $phrase;
$this->hreftagbegin = $hreftagbegin;
$this->hreftagend = $hreftagend;
$this->casesensitive = $casesensitive;
@ -19,11 +30,13 @@ class filterobject {
/**
param text the text that we are filtering
param link_array an array of filterobjects
param ignoretagsopen an array of opening tags that we should ignore while filtering
param ignoretagsclose an array of corresponding closing tags
**/
* Process phrases intelligently found within a HTML text (such as adding links)
*
* param text the text that we are filtering
* param link_array an array of filterobjects
* param ignoretagsopen an array of opening tags that we should ignore while filtering
* param ignoretagsclose an array of corresponding closing tags
**/
function filter_phrases ($text, $link_array, $ignoretagsopen=NULL, $ignoretagsclose=NULL) {
/// A list of open/close tags that we should not replace within
@ -37,7 +50,6 @@ function filter_phrases ($text, $link_array, $ignoretagsopen=NULL, $ignoretagscl
$filterinvalidsuffixes = '([a-zA-Z0-9])';
/// Add the user defined ignore tags to the default list
/// Unless specified otherwise, we will not replace within <a></a> tags
if ( $ignoretagsopen === NULL ) {
@ -46,13 +58,11 @@ function filter_phrases ($text, $link_array, $ignoretagsopen=NULL, $ignoretagscl
}
if ( is_array($ignoretagsopen) ) {
$filterignoretagsopen += $ignoretagsopen; // gotta love PHP's array handling!
$filterignoretagsclose += $ignoretagsclose;
}
/// Remove everything enclosed by the ignore tags from $text
$ignoretags = array();
foreach ($filterignoretagsopen as $key=>$opentag) {
@ -139,13 +149,10 @@ function filter_phrases ($text, $link_array, $ignoretagsopen=NULL, $ignoretagscl
}
/// Finally we do our highlighting
$text = preg_replace('/('.$linkobject->phrase.')/'.$modifiers, $linkobject->hreftagbegin.'$1'.$linkobject->hreftagend, $text);
/// Replace the not full matches before cycling to next link object
if (!empty($notfullmatches)) {
$text = str_replace(array_keys($notfullmatches),$notfullmatches,$text);
@ -192,5 +199,4 @@ function filter_phrases ($text, $link_array, $ignoretagsopen=NULL, $ignoretagscl
}
?>