Extract joinPath and splitPath for zip files

1 files changed, 20 insertions, 0 deletions

diff --git a/lib/zipfile.js b/lib/zipfile.js
index 7c534c7..ae51310 100644
--- a/lib/zipfile.js
+++ b/lib/zipfile.js
@@ -3,6 +3,8 @@ var JSZip = require("jszip");
 var promises = require("./promises");
 
 exports.openArrayBuffer = openArrayBuffer;
+exports.splitPath = splitPath;
+exports.joinPath = joinPath;
 
 function openArrayBuffer(arrayBuffer) {
     var zipFile = new JSZip(arrayBuffer);
@@ -35,3 +37,21 @@ function openArrayBuffer(arrayBuffer) {
         toBuffer: toBuffer
     };
 }
+
+function splitPath(path) {
+    var lastIndex = path.lastIndexOf("/");
+    if (lastIndex === -1) {
+        return {dirname: "", basename: path};
+    } else {
+        return {
+            dirname: path.substring(0, lastIndex),
+            basename: path.substring(lastIndex + 1)
+        };
+    }
+}
+
+function joinPath() {
+    return Array.prototype.filter.call(arguments, function(path) {
+        return path;
+    }).join("/");
+}