From 005e2627c1fc7846c5cba3d222b4025012c61e75 Mon Sep 17 00:00:00 2001
From: Kevin Martensson <kevinmartensson@gmail.com>
Date: Sun, 22 Mar 2015 17:36:35 +0100
Subject: [PATCH] Add support for renaming files

Fixes #293.
---
 Gruntfile.js      | 5 +++++
 package.json      | 1 +
 tasks/imagemin.js | 5 +++++
 test/test.js      | 7 +++++++
 4 files changed, 18 insertions(+)

diff --git a/Gruntfile.js b/Gruntfile.js
index d8f23e7..ffa95ec 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -33,6 +33,11 @@ module.exports = function (grunt) {
           src: '**/*.{gif,GIF,jpg,JPG,png,PNG}',
           dest: 'tmp'
         }]
+      },
+      rename: {
+        files: {
+          'tmp/rename.jpg': 'test/fixtures/test.jpg'
+        }
       }
     },
     nodeunit: {
diff --git a/package.json b/package.json
index 8ad6925..ede6182 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,7 @@
   "dependencies": {
     "async": "^0.9.0",
     "chalk": "^1.0.0",
+    "gulp-rename": "^1.2.0",
     "imagemin": "^3.1.0",
     "pretty-bytes": "^1.0.1"
   },
diff --git a/tasks/imagemin.js b/tasks/imagemin.js
index 3a2b830..e2a3b83 100644
--- a/tasks/imagemin.js
+++ b/tasks/imagemin.js
@@ -6,6 +6,7 @@ var async = require('async');
 var chalk = require('chalk');
 var prettyBytes = require('pretty-bytes');
 var Imagemin = require('imagemin');
+var rename = require('gulp-rename');
 
 /*
  * grunt-contrib-imagemin
@@ -40,6 +41,10 @@ module.exports = function (grunt) {
                 options.use.forEach(imagemin.use.bind(imagemin));
             }
 
+            if (path.basename(file.src[0]) !== path.basename(file.dest)) {
+                imagemin.use(rename(path.basename(file.dest)));
+            }
+
             fs.stat(file.src[0], function (err, stats) {
                 if (err) {
                     grunt.warn(err + ' in file ' + file.src[0]);
diff --git a/test/test.js b/test/test.js
index 7233dfd..64e15a5 100644
--- a/test/test.js
+++ b/test/test.js
@@ -62,6 +62,13 @@ exports.imagemin = {
 
         test.ok(fs.existsSync('tmp/nested/nested/test.png'), 'should support nested dest dir');
 
+        test.done();
+    },
+    rename: function (test) {
+        test.expect(1);
+
+        test.ok(fs.existsSync('tmp/rename.jpg'), 'should support renaming');
+
         test.done();
     }
 };