merge

README.md

@@ -42,6 +42,10 @@ Pass in your own callback to be called upon successful compilaton by node-sass.
 
 Pass in your own callback to be called upon a sass error from node-sass. The callback has the form `callback(err)`, where err is the error string generated by libsass. Note: this *does* prevent an actual `gulpPluginError` object from being created.
 
+#### `sync: true`
+
+If you pass `sync: true` into the options hash, sass.renderSync will be called, instead of sass.render. This should help when memory and/or cpu usage is getting very high when rendering many and/or big files.
+
 ## Source Maps
 
 gulp-sass can be used in tandem with [gulp-sourcemaps](https://github.com/floridoo/gulp-sourcemaps) to generate source maps for the SASS to CSS compilation. You will need to initialize [gulp-sourcemaps](https://github.com/floridoo/gulp-sourcemaps) prior to running the gulp-sass compiler and write the source maps after.

index.js

@@ -52,10 +52,7 @@ module.exports = function (options) {
 
         applySourceMap(file, map);
       }
-
-      file.path      = ext(file.path, '.css');
-      file.contents  = new Buffer(css);
-      cb(null, file);
+      handleOutput(css, file, cb);
     };
 
     opts.error = function (err) {
@@ -72,7 +69,17 @@ module.exports = function (options) {
       return cb(new gutil.PluginError('gulp-sass', err));
     };
 
-    sass.render(opts);
+	if ( opts.sync ) {
+	  try {
+	    var output = sass.renderSync(opts);
+	    opts.success(output, null);
+	    handleOutput(output, file, cb);
+	  } catch(err) {
+	    opts.error(err);
+	  }
+	} else {
+	  sass.render(opts);
+	}
 
     if (addedLocalDirPath) opts.includePaths.pop();
 
@@ -81,6 +88,12 @@ module.exports = function (options) {
   return map(nodeSass);
 };
 
+function handleOutput(output, file, cb) {
+  file.path = ext(file.path, '.css');
+  file.contents = new Buffer(output);
+  cb(null, file);
+}
+
 function getSourcesContent (sources) {
   sourcesContent = [];
 

test/test.js

@@ -58,6 +58,26 @@ test('compile a single sass file', function (t) {
   stream.write(sassFile);
 });
 
+test('compile a single sass file synchronously', function (t) {
+  var sassFile = createVinyl('mixins.scss');
+
+  var stream = gsass({sync: true});
+  stream.on('data', function (cssFile) {
+    t.ok(cssFile, 'cssFile should exist');
+    t.ok(cssFile.path, 'cssFile.path should exist');
+    t.ok(cssFile.relative, 'cssFile.relative should exist');
+    t.ok(cssFile.contents, 'cssFile.contents should exist');
+    t.equal(cssFile.path, path.join(__dirname, 'scss', 'mixins.css'));
+    t.equal(
+      fs.readFileSync(path.join(__dirname, 'ref/mixins.css'), 'utf8'),
+      cssFile.contents.toString(),
+      'file compiles correctly to css'
+    );
+    t.end();
+  })
+  stream.write(sassFile);
+});
+
 test('compile multiple sass files', function (t) {
   var files = [
     createVinyl('inheritance.scss'),
@@ -94,6 +114,19 @@ test('emit error on sass errors', function (t) {
   stream.write(errorFile);
 });
 
+test('emit error on sass errors when using sync true', function (t) {
+  var stream = gsass({sync: true});
+  var errorFile = createVinyl('somefile.sass',
+    new Buffer('body { font \'Comic Sans\'; }'));
+  stream.on('error', function (err) {
+    t.equal(err.message,
+            'source string:1: error: property "font" must be followed by a \':\'\n'
+    );
+    t.end();
+  });
+  stream.write(errorFile);
+});
+
 test('call custom error callback when opts.onError is given', function (t) {
   var stream = gsass({ onError: function (err) {
     t.equal(err,