/*
* 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.
*/
/* $Id: Fop.java 557337 2007-07-18 17:37:14Z adelmelle $ */
package org.apache.fop.tools.anttasks;
// Ant
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.DirectoryScanner;
import org.apache.tools.ant.Project;
import org.apache.tools.ant.Task;
import org.apache.tools.ant.types.FileSet;
import org.apache.tools.ant.util.GlobPatternMapper;
// Java
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.net.MalformedURLException;
import java.util.List;
// FOP
import org.apache.fop.apps.FOPException;
import org.apache.fop.apps.FOUserAgent;
import org.apache.fop.apps.FopFactory;
import org.apache.fop.apps.MimeConstants;
import org.apache.fop.cli.InputHandler;
import org.apache.commons.logging.impl.SimpleLog;
import org.apache.commons.logging.Log;
import org.xml.sax.SAXException;
/**
* Wrapper for FOP which allows it to be accessed from within an Ant task.
* Accepts the inputs:
* <ul>
* <li>fofile -> formatting objects file to be transformed</li>
* <li>format -> MIME type of the format to generate ex. "application/pdf"</li>
* <li>outfile -> output filename</li>
* <li>baseDir -> directory to work from</li>
* <li>relativebase -> (true | false) control whether to use each FO's
* directory as base directory. false uses the baseDir parameter.</li>
* <li>userconfig -> file with user configuration (same as the "-c" command
* line option)</li>
* <li>messagelevel -> (error | warn | info | verbose | debug) level to output
* non-error messages</li>
* <li>logFiles -> Controls whether the names of the files that are processed
* are logged or not</li>
* </ul>
*/
public class Fop extends Task {
private File foFile;
private List filesets = new java.util.ArrayList();
private File outFile;
private File outDir;
private String format; //MIME type
private File baseDir;
private File userConfig;
private int messageType = Project.MSG_VERBOSE;
private boolean logFiles = true;
private boolean force = false;
private boolean relativebase = false;
/**
* Sets the filename for the userconfig.xml.
* @param userConfig Configuration to use
*/
public void setUserconfig(File userConfig) {
this.userConfig = userConfig;
}
/**
* Returns the file for the userconfig.xml.
* @return the userconfig.xml file
*/
public File getUserconfig() {
return this.userConfig;
}
/**
* Sets the input XSL-FO file.
* @param foFile input XSL-FO file
*/
public void setFofile(File foFile) {
this.foFile = foFile;
}
/**
* Gets the input XSL-FO file.
* @return input XSL-FO file
*/
public File getFofile() {
return foFile;
}
/**
* Adds a set of XSL-FO files (nested fileset attribute).
* @param set a fileset
*/
public void addFileset(FileSet set) {
filesets.add(set);
}
/**
* Returns the current list of filesets.
* @return the filesets
*/
public List getFilesets() {
return this.filesets;
}
/**
* Set whether to include files (external-graphics, instream-foreign-object)
* from a path relative to the .fo file (true) or the working directory (false, default)
* only useful for filesets
*
* @param relbase true if paths are relative to file.
*/
public void setRelativebase(boolean relbase) {
this.relativebase = relbase;
}
/**
* Gets the relative base attribute
* @return the relative base attribute
*/
public boolean getRelativebase() {
return relativebase;
}
/**
* Set whether to check dependencies, or to always generate;
* optional, default is false.
*
* @param force true if always generate.
*/
public void setForce(boolean force) {
this.force = force;
}
/**
* Gets the force attribute
* @return the force attribute
*/
public boolean getForce() {
return force;
}
/**
* Sets the output file.
* @param outFile File to output to
*/
public void setOutfile(File outFile) {
this.outFile = outFile;
}
/**
* Gets the output file.
* @return the output file
*/
public File getOutfile() {
return this.outFile;
}
/**
* Sets the output directory.
* @param outDir Directory to output to
*/
public void setOutdir(File outDir) {
this.outDir = outDir;
}
/**
* Gets the output directory.
* @return the output directory
*/
public File getOutdir() {
return this.outDir;
}
/**
* Sets output format (MIME type).
* @param format the output format
*/
public void setFormat(String format) {
this.format = format;
}
/**
* Gets the output format (MIME type).
* @return the output format
*/
public String getFormat() {
return this.format;
}
/**
* Sets the message level to be used while processing.
* @param messageLevel (error | warn| info | verbose | debug)
*/
public void setMessagelevel(String messageLevel) {
if (messageLevel.equalsIgnoreCase("info")) {
messageType = Project.MSG_INFO;
} else if (messageLevel.equalsIgnoreCase("verbose")) {
messageType = Project.MSG_VERBOSE;
} else if (messageLevel.equalsIgnoreCase("debug")) {
messageType = Project.MSG_DEBUG;
} else if (messageLevel.equalsIgnoreCase("err")
|| messageLevel.equalsIgnoreCase("error")) {
messageType = Project.MSG_ERR;
} else if (messageLevel.equalsIgnoreCase("warn")) {
messageType = Project.MSG_WARN;
} else {
log("messagelevel set to unknown value \"" + messageLevel
+ "\"", Project.MSG_ERR);
throw new BuildException("unknown messagelevel");
}
}
/**
* Returns the message type corresponding to Project.MSG_*
* representing the current message level.
* @see org.apache.tools.ant.Project
*/
public int getMessageType() {
return messageType;
}
/**
* Sets the base directory for single FO file (non-fileset) usage
* @param baseDir File to use as a working directory
*/
public void setBasedir(File baseDir) {
this.baseDir = baseDir;
}
/**
* Gets the base directory.
* @return the base directory
*/
public File getBasedir() {
return (baseDir != null) ? baseDir : getProject().resolveFile(".");
}
/**
* Controls whether the filenames of the files that are processed are logged
* or not.
* @param logFiles True if the feature should be enabled
*/
public void setLogFiles(boolean logFiles) {
this.logFiles = logFiles;
}
/**
* Returns True if the filename of each file processed should be logged.
* @return True if the filenames should be logged.
*/
public boolean getLogFiles() {
return this.logFiles;
}
/**
* {@inheritDoc}
*/
public void execute() throws BuildException {
int logLevel = SimpleLog.LOG_LEVEL_INFO;
switch (getMessageType()) {
case Project.MSG_DEBUG : logLevel = SimpleLog.LOG_LEVEL_DEBUG; break;
case Project.MSG_INFO : logLevel = SimpleLog.LOG_LEVEL_INFO; break;
case Project.MSG_WARN : logLevel = SimpleLog.LOG_LEVEL_WARN; break;
case Project.MSG_ERR : logLevel = SimpleLog.LOG_LEVEL_ERROR; break;
case Project.MSG_VERBOSE: logLevel = SimpleLog.LOG_LEVEL_DEBUG; break;
default: logLevel = SimpleLog.LOG_LEVEL_INFO;
}
SimpleLog logger = new SimpleLog("FOP/Anttask");
logger.setLevel(logLevel);
try {
FOPTaskStarter starter = new FOPTaskStarter(this);
starter.setLogger(logger);
starter.run();
} catch (FOPException ex) {
throw new BuildException(ex);
} catch (IOException ioe) {
throw new BuildException(ioe);
} catch (SAXException saxex) {
throw new BuildException(saxex);
}
}
}
class FOPTaskStarter {
// configure fopFactory as desired
private FopFactory fopFactory = FopFactory.newInstance();
private Fop task;
private String baseURL = null;
/**
* logging instance
*/
protected Log logger = null;
/**
* Sets the Commons-Logging instance for this class
* @param logger The Commons-Logging instance
*/
public void setLogger(Log logger) {
this.logger = logger;
}
/**
* Returns the Commons-Logging instance for this class
* @return The Commons-Logging instance
*/
protected Log getLogger() {
return logger;
}
FOPTaskStarter(Fop task) throws SAXException, IOException {
this.task = task;
if (task.getUserconfig() != null) {
fopFactory.setUserConfig(task.getUserconfig());
}
}
private static final String[][] SHORT_NAMES = {
{"pdf", MimeConstants.MIME_PDF},
{"ps", MimeConstants.MIME_POSTSCRIPT},
{"mif", MimeConstants.MIME_MIF},
{"rtf", MimeConstants.MIME_RTF},
{"pcl", MimeConstants.MIME_PCL},
{"txt", MimeConstants.MIME_PLAIN_TEXT},
{"at", MimeConstants.MIME_FOP_AREA_TREE},
{"xml", MimeConstants.MIME_FOP_AREA_TREE},
{"tiff", MimeConstants.MIME_TIFF},
{"tif", MimeConstants.MIME_TIFF},
{"png", MimeConstants.MIME_PNG},
{"afp", MimeConstants.MIME_AFP}
};
private String normalizeOutputFormat(String format) {
if (format == null) {
return MimeConstants.MIME_PDF;
}
for (int i = 0; i < SHORT_NAMES.length; i++) {
if (SHORT_NAMES[i][0].equals(format)) {
return SHORT_NAMES[i][1];
}
}
return format; //no change
}
private static final String[][] EXTENSIONS = {
{MimeConstants.MIME_FOP_AREA_TREE, ".at.xml"},
{MimeConstants.MIME_FOP_AWT_PREVIEW, null},
{MimeConstants.MIME_FOP_PRINT, null},
{MimeConstants.MIME_PDF, ".pdf"},
{MimeConstants.MIME_POSTSCRIPT, ".ps"},
{MimeConstants.MIME_PCL, ".pcl"},
{MimeConstants.MIME_PCL_ALT, ".pcl"},
{MimeConstants.MIME_PLAIN_TEXT, ".txt"},
{MimeConstants.MIME_RTF, ".rtf"},
{MimeConstants.MIME_RTF_ALT1, ".rtf"},
{MimeConstants.MIME_RTF_ALT2, ".rtf"},
{MimeConstants.MIME_MIF, ".mif"},
{MimeConstants.MIME_SVG, ".svg"},
{MimeConstants.MIME_PNG, ".png"},
{MimeConstants.MIME_JPEG, ".jpg"},
{MimeConstants.MIME_TIFF, ".tif"},
{MimeConstants.MIME_AFP, ".afp"},
{MimeConstants.MIME_AFP_ALT, ".afp"},
{MimeConstants.MIME_XSL_FO, ".fo"}
};
private String determineExtension(String outputFormat) {
for (int i = 0; i < EXTENSIONS.length; i++) {
if (EXTENSIONS[i][0].equals(outputFormat)) {
String ext = EXTENSIONS[i][1];
if (ext == null) {
throw new RuntimeException("Output format '"
+ outputFormat + "' does not produce a file.");
} else {
return ext;
}
}
}
return ".unk"; //unknown
}
private File replaceExtension(File file, String expectedExt,
String newExt) {
String name = file.getName();
if (name.toLowerCase().endsWith(expectedExt)) {
name = name.substring(0, name.length() - expectedExt.length());
}
name = name.concat(newExt);
return new File(file.getParentFile(), name);
}
/**
* {@inheritDoc}
*/
public void run() throws FOPException {
//Set base directory
if (task.getBasedir() != null) {
try {
this.baseURL = task.getBasedir().toURL().toExternalForm();
} catch (MalformedURLException mfue) {
logger.error("Error creating base URL from base directory", mfue);
}
} else {
try {
if (task.getFofile() != null) {
this.baseURL = task.getFofile().getParentFile().toURL().
toExternalForm();
}
} catch (MalformedURLException mfue) {
logger.error("Error creating base URL from XSL-FO input file", mfue);
}
}
task.log("Using base URL: " + baseURL, Project.MSG_DEBUG);
String outputFormat = normalizeOutputFormat(task.getFormat());
String newExtension = determineExtension(outputFormat);
// actioncount = # of fofiles actually processed through FOP
int actioncount = 0;
// skippedcount = # of fofiles which haven't changed (force = "false")
int skippedcount = 0;
// deal with single source file
if (task.getFofile() != null) {
if (task.getFofile().exists()) {
File outf = task.getOutfile();
if (outf == null) {
throw new BuildException("outfile is required when fofile is used");
}
if (task.getOutdir() != null) {
outf = new File(task.getOutdir(), outf.getName());
}
// Render if "force" flag is set OR
// OR output file doesn't exist OR
// output file is older than input file
if (task.getForce() || !outf.exists()
|| (task.getFofile().lastModified() > outf.lastModified() )) {
render(task.getFofile(), outf, outputFormat);
actioncount++;
} else if (outf.exists()
&& (task.getFofile().lastModified() <= outf.lastModified() )) {
skippedcount++;
}
}
}
GlobPatternMapper mapper = new GlobPatternMapper();
mapper.setFrom("*.fo");
mapper.setTo("*" + newExtension);
// deal with the filesets
for (int i = 0; i < task.getFilesets().size(); i++) {
FileSet fs = (FileSet) task.getFilesets().get(i);
DirectoryScanner ds = fs.getDirectoryScanner(task.getProject());
String[] files = ds.getIncludedFiles();
for (int j = 0; j < files.length; j++) {
File f = new File(fs.getDir(task.getProject()), files[j]);
File outf = null;
if (task.getOutdir() != null && files[j].endsWith(".fo")) {
String[] sa = mapper.mapFileName(files[j]);
outf = new File(task.getOutdir(), sa[0]);
} else {
outf = replaceExtension(f, ".fo", newExtension);
if (task.getOutdir() != null) {
outf = new File(task.getOutdir(), outf.getName());
}
}
try {
if (task.getRelativebase()) {
this.baseURL = f.getParentFile().toURL().
toExternalForm();
}
if (this.baseURL == null) {
this.baseURL = fs.getDir(task.getProject()).toURL().
toExternalForm();
}
} catch (Exception e) {
task.log("Error setting base URL", Project.MSG_DEBUG);
}
// Render if "force" flag is set OR
// OR output file doesn't exist OR
// output file is older than input file
if (task.getForce() || !outf.exists()
|| (f.lastModified() > outf.lastModified() )) {
render(f, outf, outputFormat);
actioncount++;
} else if (outf.exists() && (f.lastModified() <= outf.lastModified() )) {
skippedcount++;
}
}
}
if (actioncount + skippedcount == 0) {
task.log("No files processed. No files were selected by the filesets "
+ "and no fofile was set." , Project.MSG_WARN);
} else if (skippedcount > 0) {
task.log(skippedcount + " xslfo file(s) skipped (no change found"
+ " since last generation; set force=\"true\" to override)."
, Project.MSG_INFO);
}
}
private void render(File foFile, File outFile,
String outputFormat) throws FOPException {
InputHandler inputHandler = new InputHandler(foFile);
OutputStream out = null;
try {
out = new java.io.FileOutputStream(outFile);
out = new BufferedOutputStream(out);
} catch (Exception ex) {
throw new BuildException("Failed to open " + outFile, ex);
}
if (task.getLogFiles()) {
task.log(foFile + " -> " + outFile, Project.MSG_INFO);
}
boolean success = false;
try {
FOUserAgent userAgent = fopFactory.newFOUserAgent();
userAgent.setBaseURL(this.baseURL);
inputHandler.renderTo(userAgent, outputFormat, out);
success = true;
} catch (Exception ex) {
throw new BuildException(ex);
} finally {
try {
out.close();
} catch (IOException ioe) {
logger.error("Error closing output file", ioe);
}
if (!success) {
outFile.delete();
}
}
}
}