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 JAVA8_STYLESHEET = "stylesheet8.css";
031    static final String JAVA6_STYLESHEET = "stylesheet6.css";
032    static final String CODERAY_STYLESHEET = "coderay-asciidoctor.css";
033    static final String OUTPUT_STYLESHEET = "stylesheet.css";
034
035    private final DocletOptions docletOptions;
036    private final DocErrorReporter errorReporter;
037
038    public Stylesheets(DocletOptions options, DocErrorReporter errorReporter) {
039        this.docletOptions = options;
040        this.errorReporter = errorReporter;
041    }
042
043    public boolean copy() {
044        if (!docletOptions.destDir().isPresent()) {
045            // standard doclet must have checked this by the time we are called
046            errorReporter.printError("Destination directory not specified, cannot copy stylesheet");
047            return false;
048        }
049        String stylesheet = selectStylesheet(System.getProperty("java.version"));
050        File destDir = docletOptions.destDir().get();
051        try {
052            Resources.copy(Resources.getResource(stylesheet), new FileOutputStream(new File(destDir, OUTPUT_STYLESHEET)));
053            Resources.copy(Resources.getResource(CODERAY_STYLESHEET), new FileOutputStream(new File(destDir, CODERAY_STYLESHEET)));
054            return true;
055        } catch (IOException e) {
056            errorReporter.printError(e.getLocalizedMessage());
057            return false;
058        }
059    }
060
061    String selectStylesheet(String javaVersion) {
062        if (javaVersion.matches("^1\\.[56]\\D.*")) {
063            return JAVA6_STYLESHEET;
064        }
065        if (javaVersion.matches("^1\\.[78]\\D.*")) {
066            return JAVA8_STYLESHEET;
067        }
068        errorReporter.printWarning("Unrecognized Java version " + javaVersion + ", using Java 7/8 stylesheet");
069        // TODO: review this when Java 9 becomes available!
070        return JAVA8_STYLESHEET;
071    }
072}