| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2001 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: |
| * |
| * 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. |
| * |
| * 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. |
| * |
| * 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 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.tools.ant.taskdefs.optional.sitraka.bytecode; |
| |
| import java.io.DataInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| import org.apache.tools.ant.taskdefs.optional.depend.constantpool.ClassCPInfo; |
| import org.apache.tools.ant.taskdefs.optional.depend.constantpool.ConstantPool; |
| import org.apache.tools.ant.taskdefs.optional.depend.constantpool.Utf8CPInfo; |
| import org.apache.tools.ant.taskdefs.optional.sitraka.bytecode.attributes.AttributeInfo; |
| |
| |
| /** |
| * Object representing a class. |
| * |
| * Information are kept to the strict minimum for JProbe reports so |
| * that not too many objects are created for a class, otherwise the |
| * JVM can quickly run out of memory when analyzing a great deal of |
| * classes and keeping them in memory for global analysis. |
| * |
| * @author <a href="sbailliez@imediation.com">Stephane Bailliez</a> |
| */ |
| public final class ClassFile { |
| |
| private MethodInfo[] methods; |
| |
| private String sourceFile; |
| |
| private String fullname; |
| |
| private int access_flags; |
| |
| public ClassFile(InputStream is) throws IOException { |
| DataInputStream dis = new DataInputStream(is); |
| ConstantPool constantPool = new ConstantPool(); |
| |
| int magic = dis.readInt(); // 0xCAFEBABE |
| int minor = dis.readShort(); |
| int major = dis.readShort(); |
| |
| constantPool.read(dis); |
| constantPool.resolve(); |
| |
| // class information |
| access_flags = dis.readShort(); |
| int this_class = dis.readShort(); |
| fullname = ((ClassCPInfo) constantPool.getEntry(this_class)).getClassName().replace('/', '.'); |
| int super_class = dis.readShort(); |
| |
| // skip interfaces... |
| int count = dis.readShort(); |
| dis.skipBytes(count * 2); // short |
| |
| // skip fields... |
| int numFields = dis.readShort(); |
| for (int i = 0; i < numFields; i++) { |
| // 3 short: access flags, name index, descriptor index |
| dis.skip(2 * 3); |
| // attribute list... |
| int attributes_count = dis.readUnsignedShort(); |
| for (int j = 0; j < attributes_count; j++) { |
| dis.skipBytes(2); // skip attr_id (short) |
| int len = dis.readInt(); |
| dis.skipBytes(len); |
| } |
| } |
| |
| // read methods |
| int method_count = dis.readShort(); |
| methods = new MethodInfo[method_count]; |
| for (int i = 0; i < method_count; i++) { |
| methods[i] = new MethodInfo(); |
| methods[i].read(constantPool, dis); |
| } |
| |
| // get interesting attributes. |
| int attributes_count = dis.readUnsignedShort(); |
| for (int j = 0; j < attributes_count; j++) { |
| int attr_id = dis.readShort(); |
| int len = dis.readInt(); |
| String attr_name = Utils.getUTF8Value(constantPool, attr_id); |
| if (AttributeInfo.SOURCE_FILE.equals(attr_name)) { |
| int name_index = dis.readShort(); |
| sourceFile = ((Utf8CPInfo) constantPool.getEntry(name_index)).getValue(); |
| } else { |
| dis.skipBytes(len); |
| } |
| } |
| } |
| |
| public int getAccess() { |
| return access_flags; |
| } |
| |
| public String getSourceFile() { |
| return sourceFile; |
| } |
| |
| public MethodInfo[] getMethods() { |
| return methods; |
| } |
| |
| public String getFullName() { |
| return fullname; |
| } |
| |
| public String getName() { |
| String name = getFullName(); |
| int pos = name.lastIndexOf('.'); |
| if (pos == -1) { |
| return ""; |
| } |
| return name.substring(pos + 1); |
| } |
| |
| public String getPackage() { |
| String name = getFullName(); |
| int pos = name.lastIndexOf('.'); |
| if (pos == -1) { |
| return ""; |
| } |
| return name.substring(0, pos); |
| } |
| |
| } |
| |
| |
| |
| |
| |