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/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation and others.
* 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.core;
import java.io.IOException;
import java.util.Enumeration;
import java.util.zip.ZipEntry;
import java.util.zip.ZipFile;
import org.apache.tools.ant.BuildException;
import org.apache.tools.ant.Task;
import org.eclipse.jdt.core.util.IClassFileReader;
import org.eclipse.jdt.core.util.ICodeAttribute;
import org.eclipse.jdt.core.util.IMethodInfo;
import org.eclipse.jdt.internal.antadapter.AntAdapterMessages;
/**
* <p>An Ant task to find out if a class file or a jar contains debug attributes. If this is the case,
* the property contains the value "has debug" after the call.
* </p>
* <p>
* <code><eclipse.checkDebugAttributes property="hasDebug" file="${basedir}/bin/p/A.class"/></code>
* </p>
* <p>
* For more information on Ant check out the website at http://jakarta.apache.org/ant/ .
* </p>
*
* This is not intended to be subclassed by users.
* @since 2.0
*/
public final class CheckDebugAttributes extends Task {
private String file;
private String property;
public void execute() throws BuildException {
if (this.file == null) {
throw new BuildException(AntAdapterMessages.getString("checkDebugAttributes.file.argument.cannot.be.null")); //$NON-NLS-1$
}
if (this.property == null) {
throw new BuildException(AntAdapterMessages.getString("checkDebugAttributes.property.argument.cannot.be.null")); //$NON-NLS-1$
}
try {
boolean hasDebugAttributes = false;
if (org.eclipse.jdt.internal.compiler.util.Util.isArchiveFileName(this.file)) {
ZipFile jarFile = new ZipFile(this.file);
for (Enumeration entries = jarFile.entries(); !hasDebugAttributes && entries.hasMoreElements(); ) {
ZipEntry entry = (ZipEntry) entries.nextElement();
if (org.eclipse.jdt.internal.compiler.util.Util.isClassFileName(entry.getName())) {
IClassFileReader classFileReader = ToolFactory.createDefaultClassFileReader(this.file, entry.getName(), IClassFileReader.ALL);
hasDebugAttributes = checkClassFile(classFileReader);
}
}
} else if (org.eclipse.jdt.internal.compiler.util.Util.isClassFileName(this.file)) {
IClassFileReader classFileReader = ToolFactory.createDefaultClassFileReader(this.file, IClassFileReader.ALL);
hasDebugAttributes = checkClassFile(classFileReader);
} else {
throw new BuildException(AntAdapterMessages.getString("checkDebugAttributes.file.argument.must.be.a.classfile.or.a.jarfile")); //$NON-NLS-1$
}
if (hasDebugAttributes) {
getProject().setUserProperty(this.property, "has debug"); //$NON-NLS-1$
}
} catch (IOException e) {
throw new BuildException(AntAdapterMessages.getString("checkDebugAttributes.ioexception.occured") + this.file); //$NON-NLS-1$
}
}
private boolean checkClassFile(IClassFileReader classFileReader) {
IMethodInfo[] methodInfos = classFileReader.getMethodInfos();
for (int i = 0, max = methodInfos.length; i < max; i++) {
ICodeAttribute codeAttribute = methodInfos[i].getCodeAttribute();
if (codeAttribute != null && codeAttribute.getLineNumberAttribute() != null) {
return true;
}
}
return false;
}
public void setFile(String value) {
this.file = value;
}
public void setProperty(String value) {
this.property = value;
}
}
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