📦 NEW: Compile multiple CSS files into different directories

Refer to ahmadawais#103

src/gulpfile.babel.js

@@ -61,6 +61,7 @@ const cache = require( 'gulp-cache' ); // Cache files in stream for later use.
 const remember = require( 'gulp-remember' ); //  Adds all the files it has ever seen back into the stream.
 const plumber = require( 'gulp-plumber' ); // Prevent pipe breaking caused by errors from gulp plugins.
 const beep = require( 'beepbeep' );
+const merge = require( 'merge-stream' );
 
 /**
  * Custom Error Handler.
@@ -143,6 +144,63 @@ gulp.task( 'styles', () => {
 		.pipe( notify({ message: '\n\n✅  ===> STYLES — completed!\n', onLast: true }) );
 });
 
+/**
+ * Task: `addonStyles`.
+ *
+ * Compiles Sass, Autoprefixes it and Minifies CSS.
+ *
+ * This task does the following:
+ *    1. Gets the source scss file
+ *    2. Compiles Sass to CSS
+ *    3. Writes Sourcemaps for it
+ *    4. Autoprefixes it and generates CSS file
+ *    5. Renames the CSS file with suffix .min.css
+ *    6. Minifies the CSS file and generates .min.css
+ *    7. Injects CSS or reloads the browser via browserSync
+ */
+gulp.task( 'addonStyles', ( done ) => {
+	// Exit task when no addon styles
+	if ( config.addonStyles.length === 0 ) {
+		return done();
+	}
+
+	// Process each addon style
+	var tasks = config.addonStyles.map( function ( addon ) {
+
+		return gulp
+			.src( addon.styleSRC, { allowEmpty: true })
+			.pipe( plumber( errorHandler ) )
+			.pipe( sourcemaps.init() )
+			.pipe(
+				sass({
+					errLogToConsole: config.errLogToConsole,
+					outputStyle: config.outputStyle,
+					precision: config.precision
+				})
+			)
+			.on( 'error', sass.logError )
+			.pipe( sourcemaps.write({ includeContent: false }) )
+			.pipe( sourcemaps.init({ loadMaps: true }) )
+			.pipe( autoprefixer( config.BROWSERS_LIST ) )
+			.pipe( sourcemaps.write( './' ) )
+			.pipe( lineec() ) // Consistent Line Endings for non UNIX systems.
+			.pipe( gulp.dest( addon.styleDestination ) )
+			.pipe( filter( '**/*.css' ) ) // Filtering stream to only css files.
+			.pipe( mmq({ log: true }) ) // Merge Media Queries only for .min.css version.
+			.pipe( browserSync.stream() ) // Reloads CSS file if that is enqueued.
+			.pipe( rename({ suffix: '.min' }) )
+			.pipe( minifycss({ maxLineLen: 10 }) )
+			.pipe( lineec() ) // Consistent Line Endings for non UNIX systems.
+			.pipe( gulp.dest( addon.styleDestination ) )
+			.pipe( filter( '**/*.css' ) ) // Filtering stream to only css files.
+			.pipe( browserSync.stream() ) // Reloads .min.css if that is enqueued.
+			.pipe( notify({ message: '\n\n✅  ===> ADDON STYLES — completed!\n', onLast: true }) );
+
+	} );
+
+	return merge( tasks );
+});
+
 /**
  * Task: `stylesRTL`.
  *
@@ -191,6 +249,66 @@ gulp.task( 'stylesRTL', () => {
 		.pipe( notify({ message: '\n\n✅  ===> STYLES RTL — completed!\n', onLast: true }) );
 });
 
+/**
+ * Task: `addonStylesRTL`.
+ *
+ * Compiles Sass, Autoprefixes it, Generates RTL stylesheet, and Minifies CSS.
+ *
+ * This task does the following:
+ *    1. Gets the source scss file
+ *    2. Compiles Sass to CSS
+ *    4. Autoprefixes it and generates style.css
+ *    5. Renames the CSS file with suffix -rtl and generates -rtl.css
+ *    6. Writes Sourcemaps for -rtl.css
+ *    7. Renames the CSS files with suffix .min.css
+ *    8. Minifies the CSS file and generates -rtl.min.css
+ *    9. Injects CSS or reloads the browser via browserSync
+ */
+gulp.task( 'addonStylesRTL', ( done ) => {
+	// Exit task when no addon styles
+	if ( config.addonStyles.length === 0 ) {
+		return done();
+	}
+
+	// Process each addon style
+	var tasks = config.addonStyles.map( function ( addon ) {
+
+		return gulp
+			.src( addon.styleSRC, { allowEmpty: true })
+			.pipe( plumber( errorHandler ) )
+			.pipe( sourcemaps.init() )
+			.pipe(
+				sass({
+					errLogToConsole: config.errLogToConsole,
+					outputStyle: config.outputStyle,
+					precision: config.precision
+				})
+			)
+			.on( 'error', sass.logError )
+			.pipe( sourcemaps.write({ includeContent: false }) )
+			.pipe( sourcemaps.init({ loadMaps: true }) )
+			.pipe( autoprefixer( config.BROWSERS_LIST ) )
+			.pipe( lineec() ) // Consistent Line Endings for non UNIX systems.
+			.pipe( rename({ suffix: '-rtl' }) ) // Append "-rtl" to the filename.
+			.pipe( rtlcss() ) // Convert to RTL.
+			.pipe( sourcemaps.write( './' ) ) // Output sourcemap for -rtl.css.
+			.pipe( gulp.dest( addon.styleDestination ) )
+			.pipe( filter( '**/*.css' ) ) // Filtering stream to only css files.
+			.pipe( browserSync.stream() ) // Reloads .css or -rtl.css, if that is enqueued.
+			.pipe( mmq({ log: true }) ) // Merge Media Queries only for .min.css version.
+			.pipe( rename({ suffix: '.min' }) )
+			.pipe( minifycss({ maxLineLen: 10 }) )
+			.pipe( lineec() ) // Consistent Line Endings for non UNIX systems.
+			.pipe( gulp.dest( addon.styleDestination ) )
+			.pipe( filter( '**/*.css' ) ) // Filtering stream to only css files.
+			.pipe( browserSync.stream() ) // Reloads .css or -rtl.css, if that is enqueued.
+			.pipe( notify({ message: '\n\n✅  ===> ADDON STYLES RTL — completed!\n', onLast: true }) );
+
+	} );
+
+	return merge( tasks );
+});
+
 /**
  * Task: `vendorsJS`.
  *
@@ -357,7 +475,7 @@ gulp.task(
 	'default',
 	gulp.parallel( 'styles', 'vendorsJS', 'customJS', 'images', browsersync, () => {
 		gulp.watch( config.watchPhp, reload ); // Reload on PHP file changes.
-		gulp.watch( config.watchStyles, gulp.parallel( 'styles' ) ); // Reload on SCSS file changes.
+		gulp.watch( config.watchStyles, gulp.parallel( 'styles', 'addonStyles' ) ); // Reload on SCSS file changes.
 		gulp.watch( config.watchJsVendor, gulp.series( 'vendorsJS', reload ) ); // Reload on vendorsJS file changes.
 		gulp.watch( config.watchJsCustom, gulp.series( 'customJS', reload ) ); // Reload on customJS file changes.
 		gulp.watch( config.imgSRC, gulp.series( 'images', reload ) ); // Reload on customJS file changes.

src/package.json

@@ -35,12 +35,15 @@
     "gulp-sourcemaps": "^2.6.2",
     "gulp-uglify": "^3.0.0",
     "gulp-uglifycss": "^1.0.6",
-    "gulp-wp-pot": "^2.0.7"
+    "gulp-wp-pot": "^2.0.7",
+    "merge-stream": "^1.0.1"
   },
   "scripts": {
     "start": "gulp",
     "styles": "gulp styles",
+    "addonStyles": "gulp addonStyles",
     "stylesRTL": "gulp stylesRTL",
+    "addonStylesRTL": "gulp addonStylesRTL",
     "vendorsJS": "gulp vendorsJS",
     "customJS": "gulp customJS",
     "images": "gulp images",

src/wpgulp.config.js

@@ -22,6 +22,15 @@ module.exports = {
 	errLogToConsole: true,
 	precision: 10,
 
+	// Add-on Style options
+	// The following list is a set of SCSS/CSS files which you want to process and place it on a different folder.
+	addonStyles: [
+		{
+			styleSRC: './assets/css/addon.scss', // Path to .scss file.
+			styleDestination: './', // Path to place the compiled CSS file. Default set to root folder.
+		},
+	],
+
 	// JS Vendor options.
 	jsVendorSRC: './assets/js/vendor/*.js', // Path to JS vendor folder.
 	jsVendorDestination: './assets/js/', // Path to place the compiled JS vendors file.