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Source code

function smilies_init() {

	global $wpsmiliestrans, $wp_smiliessearch;



	// don't bother setting up smilies if they are disabled

	if ( !get_option( 'use_smilies' ) )

		return;



	if ( !isset( $wpsmiliestrans ) ) {

		$wpsmiliestrans = array(

		':mrgreen:' => 'icon_mrgreen.gif',

		':neutral:' => 'icon_neutral.gif',

		':twisted:' => 'icon_twisted.gif',

		  ':arrow:' => 'icon_arrow.gif',

		  ':shock:' => 'icon_eek.gif',

		  ':smile:' => 'icon_smile.gif',

		    ':???:' => 'icon_confused.gif',

		   ':cool:' => 'icon_cool.gif',

		   ':evil:' => 'icon_evil.gif',

		   ':grin:' => 'icon_biggrin.gif',

		   ':idea:' => 'icon_idea.gif',

		   ':oops:' => 'icon_redface.gif',

		   ':razz:' => 'icon_razz.gif',

		   ':roll:' => 'icon_rolleyes.gif',

		   ':wink:' => 'icon_wink.gif',

		    ':cry:' => 'icon_cry.gif',

		    ':eek:' => 'icon_surprised.gif',

		    ':lol:' => 'icon_lol.gif',

		    ':mad:' => 'icon_mad.gif',

		    ':sad:' => 'icon_sad.gif',

		      '8-)' => 'icon_cool.gif',

		      '8-O' => 'icon_eek.gif',

		      ':-(' => 'icon_sad.gif',

		      ':-)' => 'icon_smile.gif',

		      ':-?' => 'icon_confused.gif',

		      ':-D' => 'icon_biggrin.gif',

		      ':-P' => 'icon_razz.gif',

		      ':-o' => 'icon_surprised.gif',

		      ':-x' => 'icon_mad.gif',

		      ':-|' => 'icon_neutral.gif',

		      ';-)' => 'icon_wink.gif',

		       '8)' => 'icon_cool.gif',

		       '8O' => 'icon_eek.gif',

		       ':(' => 'icon_sad.gif',

		       ':)' => 'icon_smile.gif',

		       ':?' => 'icon_confused.gif',

		       ':D' => 'icon_biggrin.gif',

		       ':P' => 'icon_razz.gif',

		       ':o' => 'icon_surprised.gif',

		       ':x' => 'icon_mad.gif',

		       ':|' => 'icon_neutral.gif',

		       ';)' => 'icon_wink.gif',

		      ':!:' => 'icon_exclaim.gif',

		      ':?:' => 'icon_question.gif',

		);

	}



	if (count($wpsmiliestrans) == 0) {

		return;

	}



	/*

	 * NOTE: we sort the smilies in reverse key order. This is to make sure

	 * we match the longest possible smilie (:???: vs :?) as the regular

	 * expression used below is first-match

	 */

	krsort($wpsmiliestrans);



	$wp_smiliessearch = '/(?:\s|^)';



	$subchar = '';

	foreach ( (array) $wpsmiliestrans as $smiley => $img ) {

		$firstchar = substr($smiley, 0, 1);

		$rest = substr($smiley, 1);



		// new subpattern?

		if ($firstchar != $subchar) {

			if ($subchar != '') {

				$wp_smiliessearch .= ')|(?:\s|^)';

			}

			$subchar = $firstchar;

			$wp_smiliessearch .= preg_quote($firstchar, '/') . '(?:';

		} else {

			$wp_smiliessearch .= '|';

		}

		$wp_smiliessearch .= preg_quote($rest, '/');

	}



	$wp_smiliessearch .= ')(?:\s|$)/m';

}