(function ($, h5ai) {

	var reSplitPath = /^\/([^\/]+\/?)$/,
		reSplitPath2 = /^(\/(?:.*\/)*?([^\/]+)\/)([^\/]+\/?)$/,
		splitPath = function (pathname) {

			var match;

			if (pathname === "/") {
				return {
					parent: null,
					parentname: null,
					name: "/"
				};
			}
			match = reSplitPath2.exec(pathname);
			if (match) {
				return {
					parent: match[1],
					parentname: match[2],
					name: match[3]
				};
			}
			match = reSplitPath.exec(pathname);
			if (match) {
				return {
					parent: "/",
					parentname: "/",
					name: match[1]
				};
			}
		},
		rePathEndsWithSlash = /\/$/,
		pathEndsWithSlash = function (pathname) {

			return rePathEndsWithSlash.test(pathname);
		},
		getAbsHref = function (folder, tableRow) {

			var $a, isParentFolder, href;

			if (!pathEndsWithSlash(folder)) {
				folder += "/";
			}
			if (!tableRow) {
				return folder;
			}
			$a = $(tableRow).find("td").eq(1).find("a");
			isParentFolder = ($a.text() === "Parent Directory");
			href = $a.attr("href");
			return isParentFolder ? undefined : folder + href;
		},
		kilo = 1000.0,
		reParseSize = /^\s*([\.\d]+)\s*([kmg]?)b?\s*$/i,
		parseSize = function (str) {

			var match = reParseSize.exec(str),
				val, unit;

			if (!match) {
				return -1;
			}

			val = parseFloat(match[1]);
			unit = match[2].toLowerCase();
			if (unit === "k") {
				val *= kilo;
			} else if (unit === "m") {
				val *= kilo * kilo;
			} else if (unit === "g") {
				val *= kilo * kilo * kilo;
			} else if (unit === "t") {
				val *= kilo * kilo * kilo * kilo;
			}
			return val;
		},
		sizeUnits = ["B", "KB", "MB", "GB", "TB"],
		formatSize = function (size) {

			var th = 1000.0,
				i = 0,
				maxI = sizeUnits.length - 1;

			if (isNaN(size)) {
				return size;
			}

			while (size >= th && i < maxI) {
				size /= kilo;
				i += 1;
			}
			return (i <= 1 ? Math.round(size) : size.toFixed(1)).toString() + " " + sizeUnits[i];
		},
		checkedDecodeUri = function (uri) {

			try {
				return decodeURI(uri);
			} catch (err) {}
			return uri;
		},
		reEscape = function (sequence) {

			return sequence.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&');
		};

	h5ai.util = {
		splitPath: splitPath,
		pathEndsWithSlash: pathEndsWithSlash,
		getAbsHref: getAbsHref,
		parseSize: parseSize,
		formatSize: formatSize,
		checkedDecodeUri: checkedDecodeUri,
		reEscape: reEscape
	};

}(jQuery, h5ai));