function wp_syntax_code_trim($code)
{
    // special ltrim b/c leading whitespace matters on 1st line of content
    $code = preg_replace("/^\s*\n/siU", "", $code);
    $code = rtrim($code);
	/* Insertion Code Start */
	// MRi: changes to retranslate html code tags into the normal
	// characters for geshi.
	$code = strip_tags($code);
	if (PHP_VERSION > 5.0)
	{
		$code = html_entity_decode($code, ENT_QUOTES, "UTF-8");
	}
	else
	{
		$arrSearch = array("<", ">", " ", "&");
		$arrReplace = array("<", ">", " ", "&");
		$code = str_replace($arrSearch, $arrReplace, $code);
	}
	/* Insertion Code End */
    return $code;
}

/* Insertion Code Start */
edButtons[edButtons.length] =
new edButton('ed_pre'
,'pre'
,'<pre>'
,'</pre>'
,'f'
);
/* Insertion Code End */

/* Insertion Code Start */
// Prompt for syntax highlighting parameter, and return the appropriate start tag.
// TODO: l10n support.
function edGetPreStartTag() {
	var syntaxInfo = prompt('Please insert syntax highlighting information:'+"\n"+'language[,line number]!', 'php,1').split(',');
	return '<pre lang="'+syntaxInfo[0]+'"'+(syntaxInfo[1] != undefined ? ' line="'+syntaxInfo[1]+'"' : '')+'>'+"\n";
}
 
function edhtmlspecialchars(p_string) {
	p_string = p_string.replace(/&/g, '&amp;');
	p_string = p_string.replace(/</g, '&lt;');
	p_string = p_string.replace(/>/g, '&gt;');
	p_string = p_string.replace(/"/g, '&quot;');
//	p_string = p_string.replace(/'/g, '&#039;');
	return p_string;
};
 
/* Insertion Code End */
 
// insertion code
 
function edInsertTag(myField, i) {
	//IE support
	if (document.selection) {
		myField.focus();
	    sel = document.selection.createRange();
		if (sel.text.length > 0) {
			/* Insertion Code Start */
			if (edButtons[i].id == 'ed_pre') {
				sel.text =edhtmlspecialchars(sel.text);
				edButtons[i].tagStart = edGetPreStartTag();
			}
			/* Insertion Code End */
			sel.text = edButtons[i].tagStart + sel.text + edButtons[i].tagEnd;
		}
		else {
			if (!edCheckOpenTags(i) || edButtons[i].tagEnd == '') {
				/* Insertion Code Start */
				if (edButtons[i].id == 'ed_pre') {
					edButtons[i].tagStart = edGetPreStartTag();
				}
				/* Insertion Code End */
				sel.text = edButtons[i].tagStart;
				edAddTag(i);
			}
			else {
				sel.text = edButtons[i].tagEnd;
				edRemoveTag(i);
			}
		}
		myField.focus();
	}
	//MOZILLA/NETSCAPE support
	else if (myField.selectionStart || myField.selectionStart == '0') {
		var startPos = myField.selectionStart;
		var endPos = myField.selectionEnd;
		var cursorPos = endPos;
		var scrollTop = myField.scrollTop;
 
		if (startPos != endPos) {
			/* Modification Code Start */
			var selectedText = myField.value.substring(startPos, endPos);
			var selectedTextLengthGrowth = 0;
			if (edButtons[i].id == 'ed_pre') {
				edButtons[i].tagStart = edGetPreStartTag();
				selectedTextLengthGrowth = selectedText.length;
				selectedText = edhtmlspecialchars(selectedText);
				selectedTextLengthGrowth = selectedText.length - selectedTextLengthGrowth;
			}
			myField.value = myField.value.substring(0, startPos)
			              + edButtons[i].tagStart
			              + selectedText
			              + edButtons[i].tagEnd
			              + myField.value.substring(endPos, myField.value.length);
			cursorPos += edButtons[i].tagStart.length + edButtons[i].tagEnd.length + selectedTextLengthGrowth;
			/* Modification Code End */
		}
		else {
			if (!edCheckOpenTags(i) || edButtons[i].tagEnd == '') {
				/* Insertion Code Start */
				if (edButtons[i].id == 'ed_pre') {
					edButtons[i].tagStart = edGetPreStartTag();
				}
				/* Insertion Code End */
				myField.value = myField.value.substring(0, startPos)
				              + edButtons[i].tagStart
				              + myField.value.substring(endPos, myField.value.length);
				edAddTag(i);
				cursorPos = startPos + edButtons[i].tagStart.length;
			}
			else {
				myField.value = myField.value.substring(0, startPos)
				              + edButtons[i].tagEnd
				              + myField.value.substring(endPos, myField.value.length);
				edRemoveTag(i);
				cursorPos = startPos + edButtons[i].tagEnd.length;
			}
		}
		myField.focus();
		myField.selectionStart = cursorPos;
		myField.selectionEnd = cursorPos;
		myField.scrollTop = scrollTop;
	}
	else {
		if (!edCheckOpenTags(i) || edButtons[i].tagEnd == '') {
			/* Insertion Code Start */
			if (edButtons[i].id == 'ed_pre') {
				edButtons[i].tagStart = edGetPreStartTag();
			}
			/* Insertion Code End */
			myField.value += edButtons[i].tagStart;
			edAddTag(i);
		}
		else {
			myField.value += edButtons[i].tagEnd;
			edRemoveTag(i);
		}
		myField.focus();
	}
}

/* Code Modification Start */
/* 'pre' button added for wp-syntax */
$mce_buttons = apply_filters('mce_buttons', array('bold', 'italic', 'strikethrough', '|', 'bullist', 'numlist', 'blockquote', 'pre', '|', 'justifyleft', 'justifycenter', 'justifyright', '|', 'link', 'unlink', 'wp_more', '|', 'spellchecker', 'fullscreen', 'wp_adv' ));
$mce_buttons = implode($mce_buttons, ',');
/* Code Modification End */