Passed configuration to gulp, due to grunt limitations

Gruntfile.js

@@ -2,8 +2,6 @@ module.exports = function (grunt) {
     'use strict';
 
     grunt.loadNpmTasks('grunt-php');
-    grunt.loadNpmTasks('grunt-contrib-less');
-    grunt.loadNpmTasks('grunt-contrib-watch');
 
     grunt.initConfig({
         php: {
@@ -15,32 +13,8 @@ module.exports = function (grunt) {
                     router: "index.php"
                 }
             }
-        },
-        less: {
-            development: {
-                options: {
-                    cleancss: true,
-                    report: 'min'
-                },
-                files: {
-                    "resources/themes/daux-blue/css/theme.min.css": "resources/themes/daux-blue/less/theme.less",
-                    "resources/themes/daux-green/css/theme.min.css": "resources/themes/daux-green/less/theme.less",
-                    "resources/themes/daux-navy/css/theme.min.css": "resources/themes/daux-navy/less/theme.less",
-                    "resources/themes/daux-red/css/theme.min.css": "resources/themes/daux-red/less/theme.less"
-                }
-            }
-        },
-        watch: {
-            scripts: {
-                files: ['templates/default/theme/**/*.less'],
-                tasks: ['less'],
-                options: {
-                    nospawn: true
-                },
-            },
-        },
+        }
     });
 
-    //grunt.registerTask('default', ['less', 'watch']);
     grunt.registerTask('default', ['php']);
 };

gulpfile.js

@@ -0,0 +1,167 @@
+
+var gulp = require('gulp'),
+    php = require('gulp-connect-php'),
+    less = require('gulp-less'),
+    rename = require('gulp-rename'),
+    plumber = require('gulp-plumber'),
+    postcss = require('gulp-postcss');
+
+var resources = {
+    daux_blue:{source: "resources/themes/daux-blue/less/theme.less", dest: "resources/themes/daux-blue/css/"},
+    daux_green:{source: "resources/themes/daux-green/less/theme.less", dest: "resources/themes/daux-green/css/"},
+    daux_navy:{source: "resources/themes/daux-navy/less/theme.less", dest: "resources/themes/daux-navy/css/"},
+    daux_red:{source: "resources/themes/daux-red/less/theme.less", dest: "resources/themes/daux-red/css/"}
+};
+
+var unusedRules = [
+    //We only use one glyphicon ...
+    ".glyphicon-",
+    "!.glyphicon-chevron-right",
+
+    //we dont need all buttons
+    ".btn-",
+    "!.btn-primary",
+    "!.btn-secondary",
+    "!.btn-hero",
+    "!.btn-sidebar",
+    ".caret",
+
+    //Typography
+    ".h1",
+    ".h2",
+    ".h3",
+    ".h4",
+    ".h5",
+    ".h6",
+    ".small",
+
+    // We need only small columns
+    ".col-",
+    "!.col-sm",
+
+    // We don't use a lot of navs and navbars
+    ".navbar-fixed",
+    ".navbar-inverse",
+    ".navbar-default",
+    ".nav-pills",
+    ".nav-tabs",
+    ".nav-stacked",
+    ".nav-justified",
+
+    // And a few others we don't use
+    ".bg-",
+    ".table"
+];
+
+function prepare_rules(rules) {
+    var regexes = {inclusion: [], exclusion: []}, rule, pattern, regex, exclusion;
+
+    for (rule in rules) {
+        if (!rules.hasOwnProperty(rule)) continue;
+
+        pattern = rules[rule];
+
+        exclusion = pattern.indexOf('!') === 0;
+        if (exclusion) { pattern = pattern.slice(1); }
+
+        regex = pattern.replace('.', '\\.').replace('*', '(.*)');
+
+        if (exclusion) {
+            regexes.exclusion.push(new RegExp(regex));
+        } else {
+            regexes.inclusion.push(new RegExp(regex));
+        }
+    }
+
+    return regexes;
+}
+
+function processPatterns(patterns, string) {
+    var i;
+
+    for (i in patterns.exclusion) {
+        if (!patterns.exclusion.hasOwnProperty(i)) continue;
+        if (string.match(patterns.exclusion[i])) return false;
+    }
+
+    for (i in patterns.inclusion) {
+        if (!patterns.inclusion.hasOwnProperty(i)) continue;
+        if (string.match(patterns.inclusion[i])) return true;
+    }
+}
+
+function removeUnusedRules(rules) {
+    var regexes = prepare_rules(rules);
+
+    return function(css) {
+        css.eachRule(function (rule) {
+            var removedSome = false,
+                selectors = rule.selectors,
+                i;
+
+            for (i = 0; i < selectors.length; i++) {
+                if (processPatterns(regexes, selectors[i])) {
+                    selectors.splice(i, 1);
+                    i--;
+                    removedSome = true;
+                }
+            }
+
+            if(removedSome) {
+                if (selectors.length == 0) {
+                    rule.removeSelf();
+                } else {
+                    rule.selectors = selectors;
+                }
+            }
+        });
+
+        return css;
+    }
+}
+
+
+
+function createTask(source, dest) {
+    return function() {
+        return gulp.src(source)
+            .pipe(less())
+            .pipe(postcss([
+                removeUnusedRules(unusedRules),
+                require('csswring')({
+                    preserveHacks: true
+                })
+            ]))
+            .pipe(rename({suffix: '.min'}))
+            .pipe(gulp.dest(dest));
+    }
+}
+
+
+
+var style_tasks = [];
+for (var style in resources) {
+    gulp.task('style_' + style, createTask(resources[style].source, resources[style].dest));
+    style_tasks.push('style_' + style);
+}
+
+gulp.task("styles", style_tasks);
+
+
+gulp.task('watch', function() {
+
+    // Watch .less files
+    gulp.watch('resources/themes/**/*.less', ['styles']);
+
+});
+
+gulp.task('php', function() {
+    php.server({
+        keepalive: true,
+        open: true,
+        port: 8085,
+        router: "index.php"
+    });
+});
+
+gulp.task('default', ['php']);

package.json

@@ -1,13 +1,16 @@
 {
-  "name": "daux.io",
-  "version": "0.1.1",
-  "private": true,
-  "dependencies": {
-    "grunt": "~0.4.1",
-    "grunt-php": "~0.3.0",
-    "grunt-contrib-less": "~0.9.0"
-  },
-  "devDependencies": {
-    "grunt-contrib-watch": "~0.5.0"
-  }
+    "name": "daux.io",
+    "version": "0.1.1",
+    "private": true,
+    "devDependencies": {
+        "grunt": "~0.4.1",
+        "grunt-php": "~0.3.0",
+        "csswring": "^3.0.5",
+        "gulp": "^3.9.0",
+        "gulp-connect-php": "0.0.5",
+        "gulp-less": "^3.0.3",
+        "gulp-plumber": "^1.0.1",
+        "gulp-postcss": "^5.1.10",
+        "gulp-rename": "^1.2.2"
+    }
 }