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org.codehaus.mojo.antlr.AntlrHtmlReport Maven / Gradle / Ivy

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package org.codehaus.mojo.antlr;

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;

import org.apache.maven.doxia.siterenderer.Renderer;
import org.apache.maven.doxia.siterenderer.RendererException;
import org.apache.maven.doxia.siterenderer.sink.SiteRendererSink;
import org.apache.maven.plugin.MojoExecutionException;
import org.apache.maven.plugin.MojoFailureException;
import org.apache.maven.reporting.AbstractMavenReportRenderer;
import org.apache.maven.reporting.MavenReport;
import org.apache.maven.reporting.MavenReportException;
import org.apache.maven.wagon.PathUtils;
import org.codehaus.doxia.sink.Sink;
import org.codehaus.plexus.i18n.I18N;
import org.codehaus.plexus.util.FileUtils;
import org.codehaus.plexus.util.StringUtils;

/**
 * Generates Antlr documentation from grammar files.
 *
 * @author Vincent Siveton
 * @version $Id$
 * @goal html
 * @see Command Line Options
 */
public class AntlrHtmlReport extends AbstractAntlrMojo implements MavenReport {
    // ----------------------------------------------------------------------
    // Report Parameters
    // ----------------------------------------------------------------------

    /**
     * Generates the site report
     *
     * @component
     */
    private Renderer siteRenderer;

    /**
     * Internationalization.
     *
     * @component
     */
    protected I18N i18n;

    /**
     * Specifies the destination directory where Antlr generates HTML files.
     *
     * @parameter default-value="${project.build.directory}/generated-site/antlr"
     */
    private File reportOutputDirectory;

    /**
     * The name of the Antlr report.
     *
     * @parameter expression="${name}" default-value="Antlr Grammars"
     */
    private String name;

    /**
     * The description of the Antlr report.
     *
     * @parameter expression="${description}" default-value="Generated Antlr report from grammars."
     */
    private String description;

    /**
     * @see org.apache.maven.reporting.MavenReport#getName(java.util.Locale)
     */
    @Override
    public String getName(Locale locale) {
        if (StringUtils.isEmpty(name)) {
            return i18n.getString("antlr-report", locale, "report.name");
        }

        return "Antlr Grammars";
    }

    /**
     * @see org.apache.maven.reporting.MavenReport#getDescription(java.util.Locale)
     */
    @Override
    public String getDescription(Locale locale) {
        if (StringUtils.isEmpty(description)) {
            return i18n.getString("antlr-report", locale, "report.description");
        }

        return description;
    }

    /**
     * @see org.codehaus.mojo.antlr.AbstractAntlrMojo#addArgs(java.util.List)
     */
    @Override
    protected void addArgs(List arguments) {
        // ----------------------------------------------------------------------
        // See http://www.antlr2.org/doc/options.html#Command%20Line%20Options
        // ----------------------------------------------------------------------

        arguments.add("-html");
    }

    /**
     * @see org.apache.maven.reporting.MavenReport#generate(org.codehaus.doxia.sink.Sink, java.util.Locale)
     */
    @Override
    public void generate(Sink sink, Locale locale) throws MavenReportException {
        outputDirectory = getReportOutputDirectory();

        try {
            executeAntlr();
        } catch (MojoExecutionException e) {
            throw new MavenReportException("Antlr execution failed: " + e.getMessage(), e);
        }

        AntlrRenderer r = new AntlrRenderer(sink, outputDirectory, i18n, Locale.ENGLISH);
        r.render();
    }

    /**
     * @see org.apache.maven.reporting.MavenReport#getOutputName()
     */
    @Override
    public String getOutputName() {
        return "antlr/index";
    }

    /**
     * @see org.apache.maven.reporting.MavenReport#isExternalReport()
     */
    @Override
    public boolean isExternalReport() {
        return false;
    }

    /**
     * @see org.apache.maven.reporting.MavenReport#canGenerateReport()
     */
    @Override
    public boolean canGenerateReport() {
        return true;
    }

    /**
     * @see org.apache.maven.reporting.MavenReport#getCategoryName()
     */
    @Override
    public String getCategoryName() {
        return CATEGORY_PROJECT_REPORTS;
    }

    /**
     * @see org.apache.maven.reporting.MavenReport#getReportOutputDirectory()
     */
    @Override
    public File getReportOutputDirectory() {
        if (reportOutputDirectory == null) {
            return outputDirectory;
        }

        return reportOutputDirectory;
    }

    /**
     * @see org.apache.maven.reporting.MavenReport#setReportOutputDirectory(java.io.File)
     */
    @Override
    public void setReportOutputDirectory(File reportOutputDirectory) {
        if ((reportOutputDirectory != null) && (!reportOutputDirectory.getAbsolutePath().endsWith("antlr"))) {
            this.reportOutputDirectory = new File(reportOutputDirectory, "antlr");
        } else {
            this.reportOutputDirectory = reportOutputDirectory;
        }
    }

    /**
     * @see org.apache.maven.reporting.AbstractMavenReport#execute()
     */
    @Override
    public void execute() throws MojoExecutionException, MojoFailureException {
        try {
            SiteRendererSink sink = new SiteRendererSink(
                    new org.apache.maven.doxia.siterenderer.RenderingContext(getReportOutputDirectory(), getOutputName() + ".html"));

            generate(sink, Locale.getDefault());
        } catch (MavenReportException e) {
            throw new MojoExecutionException("An error has occurred in " + getName(Locale.ENGLISH) + " report generation.", e);
        }
    }

    /**
     * Renderer report
     */
    private static class AntlrRenderer extends AbstractMavenReportRenderer {
        private File outputDirectory;

        private I18N i18n;

        private Locale locale;

        AntlrRenderer(Sink sink, File outputDirectory, I18N i18n, Locale locale) {
            super(sink);

            this.outputDirectory = outputDirectory;

            this.i18n = i18n;

            this.locale = locale;
        }

        /**
         * @see org.apache.maven.reporting.MavenReportRenderer#getTitle()
         */
        @Override
        public String getTitle() {
            return i18n.getString("antlr-report", locale, "report.title");
        }

        /**
         * @see org.apache.maven.reporting.AbstractMavenReportRenderer#renderBody()
         */
        @Override
        public void renderBody() {
            startSection(i18n.getString("antlr-report", locale, "report.overview.title"));

            paragraph(i18n.getString("antlr-report", locale, "report.overview.intro"));

            endSection();

            startSection(i18n.getString("antlr-report", locale, "report.grammars.title"));

            try {
                List htmlFiles = FileUtils.getFiles(outputDirectory, "**/*.html", "**/*index.html");

                if (htmlFiles.isEmpty()) {
                    sink.text(i18n.getString("antlr-report", locale, "report.grammars.noreport"));
                } else {
                    sink.list();
                    for (Iterator it = htmlFiles.iterator(); it.hasNext();) {
                        File current = (File) it.next();

                        sink.listItem();
                        sink.link(PathUtils.toRelative(outputDirectory, current.getAbsolutePath()));
                        sink.text(StringUtils.replace(current.getName(), ".html", ""));
                        sink.link_();
                        sink.listItem_();
                    }
                    sink.list_();
                }
            } catch (IOException e) {
                throw new RuntimeException("IOException: " + e.getMessage(), e);
            }

            endSection();

            sink.flush();
            sink.close();
        }
    }
}




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