Merge pull request #18 from ZECTBynmo/master

File path filters

README.md

@@ -33,6 +33,8 @@ The Synchronous version still uses callbacks, so it is safe to use with other As
 
     options = {
         followLinks: false,
+        // filters: ["Temp", "_Temp"] // directories with these
+                                      // keys will be skipped
     };
 
     walker = walk.walk("/tmp", options);

lib/walk.js

@@ -35,6 +35,7 @@
     me._wq = [];
     me._wqueue = [me._wq];
     me._wcurpath = undefined;
+    me._wfilters = options.filters;
     me._wfirstrun = true;
     me._wcurpath = pathname;
 
@@ -175,10 +176,23 @@
       , me = this
       ;
 
-    try {
-      files = fs.readdirSync(me._wcurpath);
-    } catch(e) {
-      err = e;
+    // Stop directories that contain filter keywords
+    // from continuing through the walk process
+    if (me._wfilters != undefined) {
+      var shouldExclude = false;
+      for (var iFilter=0; iFilter<me._wfilters.length; ++iFilter) {
+        if (me._wcurpath.indexOf(me._wfilters[iFilter]) != -1 ) {
+          me._wNext();
+        }
+      }
+    }
+
+    if( !shouldExclude ) {
+      try {
+        files = fs.readdirSync(me._wcurpath);
+      } catch(e) {
+        err = e;
+      }
     }
 
     me._wReaddirHandler(err, files);
@@ -187,6 +201,16 @@
     var me = this
       ;
 
+    // Stop directories that contain filter keywords
+    // from continuing through the walk process
+    if (me._wfilters != undefined) {
+      for (var iFilter=0; iFilter<me._wfilters.length; ++iFilter) {
+        if (me._wcurpath.indexOf(me._wfilters[iFilter]) != -1 ) {
+          me._wNext();
+        }
+      }
+    }
+
     // TODO how to remove this anony?
     fs.readdir(me._wcurpath, function (err, files) {
       me._wReaddirHandler(err, files);