@@ -1,55 +1,55 @@
/* /*
* The Apache Software License, Version 1.1
* The Apache Software License, Version 1.1
* *
* Copyright (c) 2002 The Apache Software Foundation. All rights
* reserved.
* Copyright (c) 2002 The Apache Software Foundation. All rights
* reserved.
* *
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* *
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* *
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* *
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
* *
* 4. The names "The Jakarta Project", "Ant", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
* 4. The names "The Jakarta Project", "Ant", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
* *
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
* *
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
* *
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/ */
package org.apache.ant.start; package org.apache.ant.start;
@@ -57,93 +57,151 @@ import java.io.IOException;
import java.lang.reflect.Method; import java.lang.reflect.Method;
import java.net.URL; import java.net.URL;
import java.net.URLClassLoader; import java.net.URLClassLoader;
import java.util.jar.Manifest;
import java.util.jar.Attributes; import java.util.jar.Attributes;
import java.util.jar.JarInputStream; import java.util.jar.JarInputStream;
import java.util.jar.Manifest;
import org.apache.ant.init.InitConfig; import org.apache.ant.init.InitConfig;
import org.apache.ant.init.InitException;
import java.io.File;
/** /**
* This is the main startup class for the command line interface of Ant. It
* establishes the classloaders used by the other components of Ant.
* This is the main startup class for the command line interface of Ant. It
* establishes the classloaders used by the other components of Ant.
* *
* @author Conor MacNeill
* @created 9 January 2002
* @author Conor MacNeill
* @created 9 January 2002
*/ */
public class Main { public class Main {
/** The actual class that implements the command line front end. */
/** The actual class that implements the command line front end. */
public static final String DEFAULT_COMMANDLINE_CLASS public static final String DEFAULT_COMMANDLINE_CLASS
= "org.apache.ant.cli.Commandline"; = "org.apache.ant.cli.Commandline";
/** The default front end name */
/** The default front end name */
public static final String DEFAULT_FRONTEND = "cli"; public static final String DEFAULT_FRONTEND = "cli";
/** /**
* Entry point for starting command line Ant
* Entry point for starting command line Ant
* *
* @param args commandline arguments
* @param args commandline arguments
* @exception Exception if there is a problem running Ant
*/ */
public static void main(String[] args) {
public static void main(String[] args) throws Exception {
Main main = new Main(); Main main = new Main();
main.start(DEFAULT_FRONTEND, args);
int frontendIndex = -1;
String frontend = DEFAULT_FRONTEND;
for (int i = 0; i < args.length; ++i) {
if (args[i].equals("-frontend")) {
frontendIndex = i;
break;
}
}
if (frontendIndex != -1) {
try {
frontend = args[frontendIndex + 1];
} catch (IndexOutOfBoundsException e) {
throw new InitException("You must specify a value for the "
+ "-frontend argument");
}
String[] newArgs = new String[args.length - 2];
System.arraycopy(args, 0, newArgs, 0, frontendIndex);
if (args.length > (frontendIndex + 2)) {
System.arraycopy(args, frontendIndex + 2, newArgs,
frontendIndex, args.length - frontendIndex - 2);
}
args = newArgs;
}
String defaultClass = frontend.equals(DEFAULT_FRONTEND)
? DEFAULT_COMMANDLINE_CLASS : null;
main.start(frontend, defaultClass, args);
} }
/** /**
* Internal start method used to initialise front end
* Internal start method used to initialise front end
* *
* @param frontend the frontend jar to launch
* @param args commandline arguments
* @param frontend the frontend jar to launch
* @param args commandline arguments
* @param defaultClass the default class to use if it cannot be determined
* from the jar itself
* @exception InitException if the front end cannot be started
*/ */
public void start(String frontend, String[] args) {
try {
public void start(String frontend, String defaultClass, String[] args)
throws InitException {
try {
InitConfig config = new InitConfig(); InitConfig config = new InitConfig();
URL frontendJar = new URL(config.getLibraryURL(),
URL frontendJar = new URL(config.getLibraryURL(),
"frontend/" + frontend + ".jar"); "frontend/" + frontend + ".jar");
URL[] frontendJars = new URL[]{frontendJar}; URL[] frontendJars = new URL[]{frontendJar};
ClassLoader frontEndLoader
= new URLClassLoader(frontendJars, config.getCoreLoader());
ClassLoader frontEndLoader
= new URLClassLoader(frontendJars, config.getCoreLoader());
//System.out.println("Front End Loader config"); //System.out.println("Front End Loader config");
//LoaderUtils.dumpLoader(System.out, frontEndLoader); //LoaderUtils.dumpLoader(System.out, frontEndLoader);
if (frontendJar.getProtocol().equals("file")) {
File jarFile = new File(frontendJar.getFile());
if (!jarFile.exists()) {
throw new InitException("Could not jar for frontend \""
+ frontend + "\"");
}
}
String mainClass = getMainClass(frontendJar); String mainClass = getMainClass(frontendJar);
System.out.println("Front end main class = " + mainClass);
if (mainClass == null) { if (mainClass == null) {
mainClass = DEFAULT_COMMANDLINE_CLASS;
mainClass = defaultClass ;
} }
if (mainClass == null) {
throw new InitException("Unable to determine main class "
+ " for \"" + frontend + "\" frontend");
}
// Now start the front end by reflection. // Now start the front end by reflection.
Class commandLineClass = Class.forName(mainClass, true,
Class frontend Class = Class.forName(mainClass, true,
frontEndLoader); frontEndLoader);
final Class[] param = {Class.forName("[Ljava.lang.String;"), final Class[] param = {Class.forName("[Ljava.lang.String;"),
InitConfig.class}; InitConfig.class};
final Method startMethod final Method startMethod
= commandLine Class.getMethod("start", param);
= frontend Class.getMethod("start", param);
final Object[] argument = {args, config}; final Object[] argument = {args, config};
startMethod.invoke(null, argument); startMethod.invoke(null, argument);
} catch (Exception e) { } catch (Exception e) {
e.printStackTrace( );
throw new InitException(e );
} }
} }
/** /**
* Pick up the main class from a jar's manifest
* Pick up the main class from a jar's manifest
* *
* @param jarURL the URL to the jar
* @return the jar's main-class or null if it is not specified or cannot be
* determined.
* @param jarURL the URL to the jar
* @return the jar's main-class or null if it is not specified or
* cannot be determined.
*/ */
private String getMainClass(URL jarURL) { private String getMainClass(URL jarURL) {
try { try {
JarInputStream stream = null; JarInputStream stream = null;
try { try {
stream = new JarInputStream(jarURL.openStream()); stream = new JarInputStream(jarURL.openStream());
Manifest manifest = stream.getManifest(); Manifest manifest = stream.getManifest();
if (manifest == null) { if (manifest == null) {
return null; return null;
} }
Attributes mainAttributes = manifest.getMainAttributes(); Attributes mainAttributes = manifest.getMainAttributes();
return mainAttributes.getValue("Main-Class"); return mainAttributes.getValue("Main-Class");
} finally { } finally {
if (stream != null) { if (stream != null) {
@@ -151,7 +209,7 @@ public class Main {
} }
} }
} catch (IOException e) { } catch (IOException e) {
// ignore
// ignore
return null; return null;
} }
} }
Conor MacNeill