flatter

flatter.js

function flatter (obj, match, replaceWhat, replaceWith) {
	var replace       = (replaceWhat && replaceWhat instanceof RegExp && typeof replaceWith === 'string')
	,   tmp           = null // description - a tmp variable
	;
	
	function getJuicyObject (obj) {
		var children = {}
		,   juicyChildren = {}
		;

		// recurse over all JavaScripts children, but honor those who conform to the mighty regex
		for (i in obj) {
			if (obj.hasOwnProperty(i)) {
				if (typeof obj[i] === 'object') {
					children[i] = obj[i];
				}

				if (match.test(i)) {
					tmp = (replace) ? i.replace(replaceWhat, replaceWith) : i;
					juicyChildren[tmp] = obj[i];
				}
			}
		}

		// no more children, just return the juicy ones
		if (isEmptyObj(children)) {
			return juicyChildren;
		}

		// merge any subsequent juicy children with current
		for (i in children) {
			juicyChildren = aug(juicyChildren, getJuicyObject(children[i]));
		}

		return juicyChildren;
	}

	return getJuicyObject(obj);
}