added copyDirRecursive and rmdirRecursive

lib/wrench.js

@@ -111,3 +111,84 @@ exports.chmodSyncRecursive = function(sourceDir, filemode) {
     /*  Finally, chmod the parent directory */
     fs.chmod(sourceDir, filemode);
 };
+
+
+
+/*  wrench.rmdirRecursive("directory_path", callback);
+ *  
+ *  Recursively dives through directories and obliterates everything about it.
+ */
+exports.rmdirRecursive = function rmdirRecursive(dir, clbk){
+    fs.readdir(dir, function(err, files){
+        if (err) return clbk();
+        var called = 0;
+        var done = function(){
+            if (called == files.length)
+                fs.rmdir(dir, clbk);
+            else
+                called++;
+        };
+        done();
+        files.forEach(function(f){
+            f = dir+f;
+            fs.stat(f, function(err, stat){
+                if (err) return done();
+                if (stat.isDirectory()) 
+                    rmdirRecursive(f, done);
+                else 
+                    fs.unlink(f, done);
+            });
+        });
+    });
+};
+
+/*  wrench.copyDirRecursive("directory_to_copy", "new_location", callback);
+ *
+ *  Recursively dives through a directory and moves all its files to a new 
+ *  location.
+ *
+ *  Note: Directories should be passed to this function without a trailing slash.
+ */
+exports.copyDirRecursive = function copyDirRecursive(srcDir, newDir, clbk) {
+    fs.stat(newDir, function(err, newDirStat){
+        if (!err) return exports.rmdirRecursive(newDir, function(){
+            copyDirRecursive(srcDir, newDir, clbk);
+        });
+        
+        fs.stat(srcDir, function(err, srcDirStat){
+            if (err) return clbk(err);
+            fs.mkdir(newDir, srcDirStat.mode, function(err){
+                if (err) return clbk(err);
+                fs.readdir(srcDir, function(err, files){
+                    if (err) return clbk(err);
+                    var called = 0;
+                    var done = function(err){
+                        if (err) return clbk(err);
+                        if (called == files.length)
+                            clbk();
+                        else
+                            called++;
+                    };
+                    done();
+                    files.forEach(function(filename){
+                        var file = srcDir+'/'+filename,
+                            newFile = newDir+'/'+filename,
+                            called = 0;
+                        fs.stat(file, function(err, fileStat){
+                            if (fileStat.isDirectory())
+                                copyDirRecursive(file, newFile, done);
+                            else if (fileStat.isSymbolicLink())
+                                fs.readlink(file, function(err, link){
+                                    fs.symlink(link, newFile, done);
+                                });
+                            else
+                                fs.readFile(file, function(err, data){
+                                    fs.writeFile(newFile, data, done);
+                                });
+                        });
+                    });
+                });
+            });
+        });
+    });
+};