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Main.java
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Main.java
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package org.jbake.launcher;
import java.io.File;
import java.io.StringWriter;
import org.apache.commons.configuration.CompositeConfiguration;
import org.apache.commons.configuration.ConfigurationException;
import org.jbake.app.ConfigUtil;
import org.jbake.app.ConfigUtil.Keys;
import org.jbake.app.FileUtil;
import org.jbake.app.JBakeException;
import org.kohsuke.args4j.CmdLineException;
import org.kohsuke.args4j.CmdLineParser;
import org.slf4j.bridge.SLF4JBridgeHandler;
/**
* Launcher for JBake.
*
* @author Jonathan Bullock <jonbullock@gmail.com>
*
*/
public class Main {
private final String USAGE_PREFIX = "Usage: jbake";
private final String ALT_USAGE_PREFIX = " or jbake";
/**
* Runs the app with the given arguments.
*
* @param args
*/
public static void main(final String[] args) {
try {
new Main().run(args);
} catch (final JBakeException e) {
System.err.println(e.getMessage());
e.printStackTrace(System.err);
System.exit(1);
} catch (final Throwable e) {
System.err.println("An unexpected error occurred: " + e.getMessage());
System.exit(2);
}
}
private Baker baker;
private JettyServer jettyServer;
private BakeWatcher watcher;
/**
* Default constructor.
*/
public Main() {
this(new Baker(), new JettyServer(), new BakeWatcher());
}
/**
* Optional constructor to externalize dependencies.
*
* @param baker
* @param jetty
* @param watcher
*/
protected Main(Baker baker, JettyServer jetty, BakeWatcher watcher) {
this.baker = baker;
this.jettyServer = jetty;
this.watcher = watcher;
}
protected void run(String[] args) {
SLF4JBridgeHandler.removeHandlersForRootLogger();
SLF4JBridgeHandler.install();
LaunchOptions res = parseArguments( args );
final CompositeConfiguration config;
try {
config = ConfigUtil.load( res.getSource() );
} catch( final ConfigurationException e ) {
throw new JBakeException( "Configuration error: " + e.getMessage(), e );
}
run(res, config);
}
protected void run(LaunchOptions res, CompositeConfiguration config) {
System.out.println("JBake " + config.getString(Keys.VERSION) + " (" + config.getString(Keys.BUILD_TIMESTAMP) + ") [http://jbake.org]");
System.out.println();
if (res.isHelpNeeded()) {
printUsage(res);
// Help was requested, so we are done here
return;
}
if (res.isBake()) {
baker.bake(res, config);
}
if (res.isInit()) {
initStructure(config, res.getTemplate(), res.getSourceValue());
}
if (res.isRunServer()) {
watcher.start(res, config);
if (res.getSource().getPath().equals(".")) {
// use the default destination folder
runServer( config.getString( Keys.DESTINATION_FOLDER ), config.getString( Keys.SERVER_PORT ) );
} else if (res.getDestination() != null) {
// use the destination provided via the commandline
runServer( res.getDestination().getPath(), config.getString( Keys.SERVER_PORT ));
} else {
runServer(config.getString( Keys.DESTINATION_FOLDER ), config.getString(Keys.SERVER_PORT));
}
}
}
private LaunchOptions parseArguments(String[] args) {
LaunchOptions res = new LaunchOptions();
CmdLineParser parser = new CmdLineParser(res);
try {
parser.parseArgument(args);
} catch (final CmdLineException e) {
printUsage(res);
throw new JBakeException("Invalid commandline arguments: " + e.getMessage(), e);
}
return res;
}
private void printUsage(Object options) {
CmdLineParser parser = new CmdLineParser(options);
StringWriter sw = new StringWriter();
sw.append(USAGE_PREFIX + "\n");
sw.append(ALT_USAGE_PREFIX + " <source> <destination>\n");
sw.append(ALT_USAGE_PREFIX + " [OPTION]... [<value>...]\n\n");
sw.append("Options:");
System.out.println(sw.toString());
parser.setUsageWidth(100);
parser.printUsage(System.out);
}
private void runServer(String path, String port) {
jettyServer.run(path, port);
}
private void initStructure(CompositeConfiguration config, String type, String source) {
Init init = new Init(config);
try {
File templateFolder = FileUtil.getRunningLocation();
File outputFolder;
if(source != null){
outputFolder = new File(source);
} else{
outputFolder = new File(".");
}
init.run(outputFolder, templateFolder, type);
System.out.println("Base folder structure successfully created.");
} catch (final Exception e) {
final String msg = "Failed to initialise structure: " + e.getMessage();
throw new JBakeException(msg, e);
}
}
}