path-tools.js

var PathTools = (function() {

    function getFilename(path) {
        var split = path.split("/");
        return split[split.length - 1];
    }

    function getFilenameNoExtension(path) {
        var split = path.split("/");
        var filename = split[split.length - 1];
        var filenameSplit = filename.split(".");
        return filenameSplit[0];
    }

    function getExtension(path) {
        var split = path.split(".");
        return split[split.length - 1];
    }

    function getParentDirectory(path) {
        return path.substring(0, path.lastIndexOf("/"));
    }

    function isAbsolute(path) {
        return path.indexOf(":") != -1;
    }

    function removePreceedingSlash(path) {
        return path[0] == "/" ? path.substr(1) : path;
    }

    function removeQueryString(path) {
        return path.split("?")[0];
    }

    function removeHash(path) {
        return path.split("#")[0];
    }

    function urlToHttps(url) {
        url = url.split(":")[1];
        return "https:" + url;
    }

	//unfinished
    function resolveRelativeUrl(url, base) {
		base = base.replace(/\/$/, "");
        if (/^\//.test(url)) {
            return base + "/" + url.substr(1).replace(/\/$/, "");
        }
        if(/^\.\./.test(url)){
			return resolveRelativeUrl(url.replace(/^\.\.\/?/,""), getParentDirectory(base))
		}
		return (base + "/" + url).replace(/\/$/,"");
    }

    return {
        getFilename: getFilename,
        getFilenameNoExtension: getFilenameNoExtension,
        getExtension: getExtension,
        getParentDirectory: getParentDirectory,
        isAbsolute: isAbsolute,
        removePreceedingSlash: removePreceedingSlash,
        removeQueryString: removeQueryString,
        removeHash: removeHash,
        urlToHttps: urlToHttps,
		resolveRelativeUrl : resolveRelativeUrl
    };

})();