web client: path module

1 files changed, 48 insertions, 0 deletions

diff --git a/web/path.js b/web/path.js
new file mode 100644
index 0000000..bb60c76
--- /dev/null
+++ b/web/path.js
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2012-2014 Kaarle Ritvanen
+ * See LICENSE file for license details
+ */
+
+define(["underscore"], function(_) {
+    function split(path) {
+	var res = [];
+	while (path && path != "/") {
+	    var comp = path.match(/^\/([^\\\/]|\\.)+/)[0];
+	    res.push(comp.substring(1));
+	    path = path.substring(comp.length);
+	}
+	return res;
+    }
+
+    function escape(name) {
+	if (!_.isString(name)) return String(name);
+	name = name.replace(/([\\\/])/g, "\\$1");
+	if (isNaN(Number(name))) return name;
+	return "\\" + name;
+    }
+
+    function join() {
+	var arg = _.toArray(arguments);
+	if (arg.length == 1) return arg[0];
+
+	var path = arg.shift();
+	var name = arg.shift();
+
+	arg.unshift((path == "/" ? "" : path) + "/" + escape(name));
+
+	return join.apply(undefined, arg);
+    }
+
+    return {
+	split: split,
+	join: join,
+	isSubordinate: function(p1, p2, real) {
+	    p1 = split(p1);
+	    p2 = split(p2);
+	    if (real && p1.length <= p2.length) return false;
+	    for (var i = 0; i < p2.length; i++)
+		if (p1[i] != p2[i]) return false;
+	    return true;
+	}
+    };
+});