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- /*
- * Copyright 2000-2016 Vaadin Ltd.
- *
- * Licensed under the Apache License, Version 2.0 (the "License"); you may not
- * use this file except in compliance with the License. You may obtain a copy of
- * the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
- * License for the specific language governing permissions and limitations under
- * the License.
- */
- package com.vaadin.server.themeutils;
-
- import java.io.File;
- import java.io.FileNotFoundException;
- import java.io.FileOutputStream;
- import java.io.IOException;
- import java.io.PrintStream;
- import java.net.URL;
- import java.util.ArrayList;
- import java.util.Collections;
- import java.util.List;
- import java.util.Map;
- import java.util.logging.Level;
- import java.util.logging.Logger;
-
- import com.vaadin.server.widgetsetutils.ClassPathExplorer;
- import com.vaadin.server.widgetsetutils.ClassPathExplorer.LocationInfo;
-
- /**
- * Helper class for managing the addon imports and creating an a SCSS file for
- * importing all your addon themes. The helper method searches the classpath for
- * Vaadin addons and uses the 'Vaadin-Themes' metadata to create the imports.
- *
- * <p>
- * The addons.scss is always overwritten when this tool is invoked.
- * </p>
- *
- * @since 7.1
- */
- public class SASSAddonImportFileCreator {
-
- private static final String ADDON_IMPORTS_FILE = "addons.scss";
-
- private static final String ADDON_IMPORTS_FILE_TEXT = "This file is automatically managed and "
- + "will be overwritten from time to time.";
-
- /**
- *
- * @param args
- * Theme directory where the addons.scss file should be created
- */
- public static void main(String[] args) throws IOException {
- if (args.length == 0) {
- printUsage();
- } else {
- String themeDirectory = args[0];
- updateTheme(themeDirectory);
- }
- }
-
- /**
- * Updates a themes addons.scss with the addon themes found on the classpath
- *
- * @param themeDirectory
- * The target theme directory
- */
- public static void updateTheme(String themeDirectory) throws IOException {
-
- File addonImports = new File(themeDirectory, ADDON_IMPORTS_FILE);
-
- if (!addonImports.exists()) {
-
- // Ensure directory exists
- addonImports.getParentFile().mkdirs();
-
- // Ensure file exists
- addonImports.createNewFile();
- }
-
- LocationInfo info = ClassPathExplorer
- .getAvailableWidgetSetsAndStylesheets();
-
- try {
- PrintStream printStream = new PrintStream(
- new FileOutputStream(addonImports));
-
- printStream.println("/* " + ADDON_IMPORTS_FILE_TEXT + " */");
-
- printStream.println("/* Do not manually edit this file. */");
-
- printStream.println();
-
- Map<String, URL> addonThemes = info.getAddonStyles();
-
- // Sort addon styles so that CSS imports are first and SCSS import
- // last
- List<String> paths = new ArrayList<>(addonThemes.keySet());
- Collections.sort(paths, (String path1, String path2) -> {
- if (path1.toLowerCase().endsWith(".css")
- && path2.toLowerCase().endsWith(".scss")) {
- return -1;
- }
- if (path1.toLowerCase().endsWith(".scss")
- && path2.toLowerCase().endsWith(".css")) {
- return 1;
- }
- return 0;
- });
-
- List<String> mixins = new ArrayList<>();
- for (String path : paths) {
- mixins.addAll(
- addImport(printStream, path, addonThemes.get(path)));
- printStream.println();
- }
-
- createAddonsMixin(printStream, mixins);
-
- } catch (FileNotFoundException e) {
- // Should not happen since file is checked before this
- getLogger().log(Level.WARNING, "Error updating addons.scss", e);
- }
- }
-
- private static Logger getLogger() {
- return Logger.getLogger(SASSAddonImportFileCreator.class.getName());
- }
-
- private static List<String> addImport(PrintStream stream, String file,
- URL location) {
-
- // Add import comment
- printImportComment(stream, location);
-
- List<String> foundMixins = new ArrayList<>();
-
- if (file.endsWith(".css")) {
- stream.print("@import url(\"../../../" + file + "\");\n");
- } else {
- // Assume SASS
- stream.print("@import \"../../../" + file + "\";\n");
-
- // Convention is to name the mixin after the stylesheet. Strip
- // .scss from filename
- String mixin = file.substring(file.lastIndexOf('/') + 1,
- file.length() - ".scss".length());
-
- foundMixins.add(mixin);
- }
-
- stream.println();
-
- return foundMixins;
- }
-
- private static void printImportComment(PrintStream stream, URL location) {
-
- // file:/absolute/path/to/addon.jar!/
- String path = location.getPath();
-
- try {
- // Try to parse path for better readability
- path = path.substring(path.lastIndexOf(':') + 1,
- path.lastIndexOf('!'));
-
- // Extract jar archive filename
- path = path.substring(path.lastIndexOf('/') + 1);
-
- } catch (Exception e) {
- // Parsing failed but no worries, we then use whatever
- // location.getPath() returns
- }
-
- stream.println("/* Provided by " + path + " */");
- }
-
- private static void createAddonsMixin(PrintStream stream,
- List<String> mixins) {
-
- stream.println(
- "/* Import and include this mixin into your project theme to include the addon themes */");
- stream.println("@mixin addons {");
- for (String addon : mixins) {
- stream.println("\t@include " + addon + ";");
- }
- stream.println("}");
- stream.println();
- }
-
- private static void printUsage() {
- String className = SASSAddonImportFileCreator.class.getSimpleName();
- PrintStream o = System.out;
- o.println(className + " usage:");
- o.println();
- o.println("./" + className + " [Path to target theme folder]");
- }
- }
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