feature(spawnify) add support of "~" and "." directory in options.cwd

Author: coderaiser

lib/spawnify.js

@@ -29,7 +29,9 @@
 
         assert(command, 'command could not be empty!');
 
-        if (!options)
+        if (options && options.cwd)
+            options.cwd = parseDir(options.cwd);
+        else
             options     = {
                 cwd: process.cwd()
             };
@@ -39,6 +41,20 @@
         return spawnify;
     };
 
+    function parseDir(dir) {
+        var HOME_WIN    = process.env.HOMEPATH,
+            HOME_UNIX   = process.env.HOME,
+            HOME        = HOME_WIN || HOME_UNIX,
+            cwd         = process.cwd();
+        
+        assert(dir, 'dir should be string!');
+        
+        dir = dir.replace(/^~/, HOME)
+                 .replace(/^\./, cwd);
+        
+        return dir;
+    }
+    
     function Spawnify(command, options) {
         var self = this;