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/*******************************************************************************
* Copyright (c) 2011, 2013 Tasktop Technologies.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* David Green - initial API and implementation
*******************************************************************************/
package org.eclipse.mylyn.wikitext.ant.internal;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.io.Writer;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.List;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.DirectoryScanner;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.types.FileSet;
import org.eclipse.mylyn.wikitext.ant.MarkupTask;
import org.eclipse.mylyn.wikitext.parser.DocumentBuilder;
import org.eclipse.mylyn.wikitext.parser.HtmlParser;
import org.eclipse.mylyn.wikitext.parser.markup.MarkupLanguage;
import org.xml.sax.InputSource;
/**
* An Ant task to generate wiki markup from HTML sources. For best results ensure that jsoup is on the classpath.
*
* @author David Green
*
*/
public class HtmlToMarkupTask extends MarkupTask {
private final List<FileSet> filesets = new ArrayList<FileSet>();
protected File file;
protected String outputFilenameFormat = "$1.$2"; //$NON-NLS-1$
protected boolean overwrite = true;
@Override
public void execute() throws BuildException {
if (file == null && filesets.isEmpty()) {
throw new BuildException(Messages.getString("MarkupToHtmlTask.1")); //$NON-NLS-1$
}
if (file != null && !filesets.isEmpty()) {
throw new BuildException(Messages.getString("MarkupToHtmlTask.2")); //$NON-NLS-1$
}
if (file != null) {
if (!file.exists()) {
throw new BuildException(MessageFormat.format(Messages.getString("MarkupToHtmlTask.3"), file)); //$NON-NLS-1$
} else if (!file.isFile()) {
throw new BuildException(MessageFormat.format(Messages.getString("MarkupToHtmlTask.4"), file)); //$NON-NLS-1$
} else if (!file.canRead()) {
throw new BuildException(MessageFormat.format(Messages.getString("MarkupToHtmlTask.5"), file)); //$NON-NLS-1$
}
}
MarkupLanguage markupLanguage = createMarkupLanguage();
for (FileSet fileset : filesets) {
File filesetBaseDir = fileset.getDir(getProject());
DirectoryScanner ds = fileset.getDirectoryScanner(getProject());
String[] files = ds.getIncludedFiles();
if (files != null) {
File baseDir = ds.getBasedir();
for (String file : files) {
File inputFile = new File(baseDir, file);
try {
processFile(markupLanguage, filesetBaseDir, inputFile);
} catch (BuildException e) {
throw e;
} catch (Exception e) {
throw new BuildException(MessageFormat.format(
Messages.getString("MarkupToHtmlTask.11"), inputFile, //$NON-NLS-1$
e.getMessage()), e);
}
}
}
}
if (file != null) {
try {
processFile(markupLanguage, file.getParentFile(), file);
} catch (BuildException e) {
throw e;
} catch (Exception e) {
throw new BuildException(MessageFormat.format(
Messages.getString("MarkupToHtmlTask.12"), file, e.getMessage()), e); //$NON-NLS-1$
}
}
}
private void processFile(MarkupLanguage markupLanguage, File folder, File source) {
log(MessageFormat.format(Messages.getString("MarkupToHtmlTask.14"), source), Project.MSG_VERBOSE); //$NON-NLS-1$
if (isValidate()) {
log(MessageFormat.format(Messages.getString("HtmlToMarkupTask.1"), source), Project.MSG_WARN); //$NON-NLS-1$
}
String name = source.getName();
if (name.lastIndexOf('.') != -1) {
name = name.substring(0, name.lastIndexOf('.'));
}
File outputFile = computeTargetFile(markupLanguage, source, name);
if (!outputFile.exists() || overwrite || outputFile.lastModified() < source.lastModified()) {
Writer writer;
try {
writer = new OutputStreamWriter(new BufferedOutputStream(new FileOutputStream(outputFile)), "utf-8"); //$NON-NLS-1$
} catch (Exception e) {
throw new BuildException(MessageFormat.format(
Messages.getString("MarkupToHtmlTask.16"), outputFile, e.getMessage()), e); //$NON-NLS-1$
}
try {
DocumentBuilder builder = markupLanguage.createDocumentBuilder(writer);
Reader input;
InputStream in;
try {
in = new BufferedInputStream(new FileInputStream(source));
input = getSourceEncoding() == null ? new InputStreamReader(in) : new InputStreamReader(in,
getSourceEncoding());
} catch (Exception e) {
throw new BuildException(MessageFormat.format(
Messages.getString("MarkupTask.cannotReadSource"), source, e.getMessage()), e); //$NON-NLS-1$
}
try {
new HtmlParser().parse(new InputSource(input), builder);
} catch (Exception e) {
throw new BuildException(MessageFormat.format(
Messages.getString("HtmlToMarkupTask.failedToProcessContent"), source, e.getMessage()), e); //$NON-NLS-1$
} finally {
try {
in.close();
} catch (Exception e) {
throw new BuildException(MessageFormat.format(
Messages.getString("MarkupTask.cannotReadSource"), source, e.getMessage()), e); //$NON-NLS-1$
}
}
} finally {
try {
writer.close();
} catch (Exception e) {
throw new BuildException(MessageFormat.format(
Messages.getString("MarkupToHtmlTask.17"), outputFile, //$NON-NLS-1$
e.getMessage()), e);
}
}
}
}
private File computeTargetFile(MarkupLanguage markupLanguage, File source, String name) {
return new File(source.getParentFile(),
outputFilenameFormat.replace("$1", name).replace("$2", markupLanguage.getName().toLowerCase())); //$NON-NLS-1$ //$NON-NLS-2$
}
/**
* The format of the HTML output file. Consists of a pattern where the '$1' is replaced with the filename of the
* input file, $2 is replaced with the markup language name (in lower-case). Default value is <code>$1.$2</code>
*/
public String getOutputFilenameFormat() {
return outputFilenameFormat;
}
/**
* The format of the HTML output file. Consists of a pattern where the '$1' is replaced with the filename of the
* input file, $2 is replaced with the markup language name (in lower-case). Default value is <code>$1.$2</code>
*/
public void setOutputFilenameFormat(String outputFilenameFormat) {
this.outputFilenameFormat = outputFilenameFormat;
}
/**
* indicate if target files should be overwritten even if their timestamps are newer than the source files.
*/
public boolean isOverwrite() {
return overwrite;
}
public void setOverwrite(boolean overwrite) {
this.overwrite = overwrite;
}
public File getFile() {
return file;
}
public void setFile(File file) {
this.file = file;
}
/**
* Adds a set of files to process.
*/
public void addFileset(FileSet set) {
filesets.add(set);
}
}
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