[enh] improve grunt-file for oscar_template

searx/static/oscar/gruntfile.js

@@ -33,9 +33,43 @@ module.exports = function(grunt) {
         }
       }
     },
+    less: {
+        development: {
+            options: {
+                paths: ["less/oscar"]
+                //banner: '/*! less/oscar/oscar.css | <%= grunt.template.today("dd-mm-yyyy") %> | https://github.com/asciimoo/searx */\n'
+            },
+            files: {"css/oscar.css": "less/oscar/oscar.less"}
+        },
+        production: {
+            options: {
+                paths: ["less/oscar"],
+                //banner: '/*! less/oscar/oscar.css | <%= grunt.template.today("dd-mm-yyyy") %> | https://github.com/asciimoo/searx */\n',
+                cleancss: true
+            },
+            files: {"css/oscar.min.css": "less/oscar/oscar.less"}
+        },
+        bootstrap: {
+            options: {
+                paths: ["less/bootstrap"],
+                cleancss: true
+            },
+            files: {"css/bootstrap.min.css": "less/bootstrap/bootstrap.less"}
+        },
+    },
     watch: {
-      files: ['<%= jshint.files %>'],
+        scripts: {
-      tasks: ['jshint']
+            files: ['<%= jshint.files %>'],
+            tasks: ['jshint', 'concat', 'uglify']
+        },
+        oscar_styles: {
+            files: ['less/oscar/**/*.less'],
+            tasks: ['less:development', 'less:production']
+        },
+        bootstrap_styles: {
+            files: ['less/bootstrap/**/*.less'],
+            tasks: ['less:bootstrap']
+        }
     }
   });
 
@@ -43,9 +77,12 @@ module.exports = function(grunt) {
   grunt.loadNpmTasks('grunt-contrib-jshint');
   grunt.loadNpmTasks('grunt-contrib-watch');
   grunt.loadNpmTasks('grunt-contrib-concat');
+  grunt.loadNpmTasks('grunt-contrib-less');
 
   grunt.registerTask('test', ['jshint']);
 
-  grunt.registerTask('default', ['jshint', 'concat', 'uglify']);
+  grunt.registerTask('default', ['jshint', 'concat', 'uglify', 'less']);
+  
+  grunt.registerTask('styles', ['less']);
 
 };

searx/static/oscar/package.json

@@ -4,7 +4,8 @@
         "grunt-contrib-uglify": "~0.6.0",
         "grunt-contrib-watch" : "~0.6.1",
         "grunt-contrib-concat" : "~0.5.0",
-        "grunt-contrib-jshint" : "~0.10.0"
+        "grunt-contrib-jshint" : "~0.10.0",
+        "grunt-contrib-less" : "~0.11.0"
     },
     
     "scripts": {