tjhunt
ccc161f8f0
* Rename filter base class from filter_base to moodle_text_filter * Remove unnecessary explicit constructors in moodle_text_filter subclasses * New filter_manager class, rather than static methods in filter_base * Move some logic out of weblib, and into filter_manager * Count filtering ops when $CFG->perfdebug on, via performance_measuring_filter_manager * Kill unused filter_string function. Petr said it should have been private to weblib
40 lines
1.3 KiB
PHP
40 lines
1.3 KiB
PHP
<?PHP // $Id$
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// This class looks for email addresses in Moodle text and
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// hides them using the Moodle obfuscate_text function.
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// Original code by Mike Churchward
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class emailprotect_filter extends moodle_text_filter {
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function filter($text) {
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/// Do a quick check using stripos to avoid unnecessary work
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if (strpos($text, '@') === false) {
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return $text;
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}
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/// There might be an email in here somewhere so continue ...
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$matches = array();
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/// regular expression to define a standard email string.
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$emailregex = '((?:[\w\.\-])+\@(?:(?:[a-zA-Z\d\-])+\.)+(?:[a-zA-Z\d]{2,4}))';
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/// pattern to find a mailto link with the linked text.
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$pattern = '|(<a\s+href\s*=\s*[\'"]?mailto:)'.$emailregex.'([\'"]?\s*>)'.'(.*)'.'(</a>)|iU';
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$text = preg_replace_callback($pattern, 'alter_mailto', $text);
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/// pattern to find any other email address in the text.
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$pattern = '/(^|\s+|>)'.$emailregex.'($|\s+|\.\s+|\.$|<)/i';
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$text = preg_replace_callback($pattern, 'alter_email', $text);
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return $text;
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}
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}
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function alter_email($matches) {
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return $matches[1].obfuscate_text($matches[2]).$matches[3];
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}
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function alter_mailto($matches) {
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return obfuscate_mailto($matches[2], $matches[4]);
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}
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?>
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