feature(rest) copy: add progress

lib/server/rest.js

@@ -29,6 +29,7 @@
         ponse       = require('ponse'),
         rendy       = require('rendy'),
         copymitter  = require('copymitter'),
+        charm       = require('charm'),
         
         Modules     = require(DIR_JSON + 'modules'),
         
@@ -230,15 +231,7 @@
                 
                 msg         = formatMsg('copy', files.names);
                 
-                emitter     = copymitter(files.from, files.to, files.names);
-                
-                emitter.on('end', function() {
-                    if (!wasError)
-                        callback(null, msg);
-                });
-                
-                emitter.on('error', function(error) {
-                    wasError = true;
+                copy(files.from, files.to, files.names, function(error) {
                     callback(error, msg);
                 });
             }
@@ -293,6 +286,39 @@
         }
     }
     
+    function copy(from, to, names, fn) {
+        var error,
+            prev    = '',
+            bar     = charm(),
+            cp      = copymitter(from, to, names);
+        
+        bar.pipe(process.stdout);
+        bar.cursor(false);
+         
+        cp.on('progress', function(percent) {
+            bar.left(prev.length);
+            
+            prev = rendy('copy {{ from }} -> {{ to }} {{ percent }}%', {
+                to: to,
+                from: from,
+                percent: percent
+            });
+            
+            bar.write(prev);
+        });
+        
+        cp.on('error', function(e) {
+            error = e;
+            cp.abort();
+        });
+        
+        cp.on('end', function() {
+            fn(error);
+            bar.write('\n');
+            bar.cursor(true);
+        });
+    }
+    
     function copyFiles(files, processFunc, callback) {
         var names           = files.names,
             

package.json

@@ -27,6 +27,7 @@
   "subdomain": "cloudcmd",
   "dependencies": {
     "ashify": "~1.0.0",
+    "charm": "~1.0.0",
     "console-io": "~2.1.0",
     "copymitter": "~1.5.0",
     "edward": "~1.1.0",