001/**
002 * Copyright 2013-2015 John Ericksen
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *    http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package org.asciidoctor.asciidoclet;
017
018import com.google.common.io.Resources;
019import com.sun.javadoc.DocErrorReporter;
020
021import java.io.File;
022import java.io.FileOutputStream;
023import java.io.IOException;
024
025/**
026 * Responsible for copying the appropriate stylesheet to the javadoc
027 * output directory.
028 */
029public class Stylesheets {
030    static final String JAVA9_STYLESHEET = "stylesheet9.css";
031    static final String JAVA8_STYLESHEET = "stylesheet8.css";
032    static final String JAVA6_STYLESHEET = "stylesheet6.css";
033    static final String CODERAY_STYLESHEET = "coderay-asciidoctor.css";
034    static final String OUTPUT_STYLESHEET = "stylesheet.css";
035
036    private final DocletOptions docletOptions;
037    private final DocErrorReporter errorReporter;
038
039    public Stylesheets(DocletOptions options, DocErrorReporter errorReporter) {
040        this.docletOptions = options;
041        this.errorReporter = errorReporter;
042    }
043
044    public boolean copy() {
045        if (!docletOptions.destDir().isPresent()) {
046            // standard doclet must have checked this by the time we are called
047            errorReporter.printError("Destination directory not specified, cannot copy stylesheet");
048            return false;
049        }
050        String stylesheet = selectStylesheet(System.getProperty("java.version"));
051        File destDir = docletOptions.destDir().get();
052        try {
053            Resources.copy(Resources.getResource(stylesheet), new FileOutputStream(new File(destDir, OUTPUT_STYLESHEET)));
054            Resources.copy(Resources.getResource(CODERAY_STYLESHEET), new FileOutputStream(new File(destDir, CODERAY_STYLESHEET)));
055            return true;
056        } catch (IOException e) {
057            errorReporter.printError(e.getLocalizedMessage());
058            return false;
059        }
060    }
061
062    String selectStylesheet(String javaVersion) {
063        if (javaVersion.matches("^1\\.[56]\\D.*")) {
064            return JAVA6_STYLESHEET;
065        }
066        if (javaVersion.matches("^1\\.[78]\\D.*")) {
067            return JAVA8_STYLESHEET;
068        }
069        if (javaVersion.matches("^(9|10)(\\.)?.*")) {
070            return JAVA9_STYLESHEET;
071        }
072        errorReporter.printWarning("Unrecognized Java version " + javaVersion + ", using Java 9 stylesheet");
073        // TODO: review this when Java 11 becomes available and/or make more configurable!
074        return JAVA9_STYLESHEET;
075    }
076}