isEmptyObject and matchRecursiveRegExp

functions.common.js

MyApp.CommonFunctionsModule.isEmptyObject = function ( obj ) {

	var hasOwnProperty = Object.prototype.hasOwnProperty;

	// null and undefined are "empty"
	if ( obj == null ) return true;

	// Assume if it has a length property with a non-zero value
	// that that property is correct.
	if ( obj.length > 0 )    return false;
	if ( obj.length === 0 )  return true;

	// Otherwise, does it have any properties of its own?
	// Note that this doesn't handle
	// toString and valueOf enumeration bugs in IE < 9
	for ( var key in obj ) {
		if ( hasOwnProperty.call( obj, key ) ) return false;
	}

	return true;
};

/*
 * See http://blog.stevenlevithan.com/archives/javascript-match-recursive-regexp
 */
MyApp.CommonFunctionsModule.matchRecursiveRegExp = function ( str, left, right, flags ) {

	var f = flags || '',
		g = f.indexOf( "g" ) > -1,
		x = new RegExp( left + "|" + right, 'g' + f.replace( /g/g, '' ) ),
		l = new RegExp( left, f.replace( /g/g, '' ) ),
		a = [],
		t, s, m;

	do {
		t = 0;
		while ( m = x.exec( str ) ) {
			if ( l.test( m[0] ) ) {
				if ( !t++ ) s = x.lastIndex;
			} else if ( t ) {
				if ( !--t ) {
					a.push( str.slice( s, m.index ) );
					if ( !g ) return a;
				}
			}
		}
	} while ( t && (x.lastIndex = s) );

	return a;
};