/***
* ASM XML Adapter
* Copyright (c) 2004, Eugene Kuleshov
* 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. Neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS 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 COPYRIGHT OWNER OR 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.
*/
package org.objectweb.asm.xml;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.net.URL;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.sax.SAXResult;
import javax.xml.transform.sax.SAXTransformerFactory;
import javax.xml.transform.sax.TransformerHandler;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.util.TraceClassVisitor;
import sun.misc.HexDumpEncoder;
/**
* RoundtripTest
*
* @author Eugene Kuleshov
*/
public class RoundtripTest extends TestCase {
private String className;
public RoundtripTest( String className) {
super( "testRoundtrip");
this.className = className;
}
public static TestSuite suite() throws Exception {
TestSuite suite = new TestSuite( RoundtripTest.class.getName());
Class c = RoundtripTest.class;
String u = c.getResource( "/java/lang/String.class").toString();
int n = u.indexOf( '!');
ZipInputStream zis = new ZipInputStream( new URL( u.substring( 4, n)).openStream());
ZipEntry ze = null;
while(( ze = zis.getNextEntry())!=null) {
if( ze.getName().endsWith( ".class")) {
suite.addTest( new RoundtripTest( u.substring( 0, n+2).concat( ze.getName())));
}
}
return suite;
}
public void testRoundtrip() throws Exception {
byte[] classData = getCode( new URL( className).openStream());
ByteArrayOutputStream bos = new ByteArrayOutputStream();
SAXTransformerFactory saxtf = ( SAXTransformerFactory) TransformerFactory.newInstance();
// Templates templates = saxtf.newTemplates( new StreamSource( getClass().getResourceAsStream( "copy.xsl")));
// TransformerHandler handler = saxtf.newTransformerHandler( templates);
TransformerHandler handler = saxtf.newTransformerHandler();
handler.setResult( new SAXResult( new ASMContentHandler( bos, false)));
handler.startDocument();
ClassReader cr = new ClassReader( classData);
cr.accept( new SAXClassAdapter( handler, false), false);
handler.endDocument();
byte[] newData = bos.toByteArray();
try {
StringWriter sw1 = new StringWriter();
StringWriter sw2 = new StringWriter();
traceBytecode( classData, new PrintWriter( sw1));
traceBytecode( newData, new PrintWriter( sw2));
assertEquals( "different data", sw1.getBuffer().toString(), sw2.getBuffer().toString());
} catch( Exception ex) {
HexDumpEncoder enc = new HexDumpEncoder();
assertEquals( "invaid data", enc.encode( classData), enc.encode( newData));
}
}
private static void traceBytecode( byte[] classData, PrintWriter pw) {
ClassReader cr = new ClassReader( classData);
// cr.accept( new TraceClassVisitor( cw, new PrintWriter( System.out)),
cr.accept( new TraceClassVisitor( null, pw), false);
}
private static byte[] getCode( InputStream is) throws IOException {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
byte[] buff = new byte[ 1024];
int n = -1;
while(( n = is.read( buff))>-1) bos.write( buff, 0, n);
return bos.toByteArray();
}
// workaround for Ant's JUnit test runner
public String getName() {
return super.getName()+" : "+className;
}
}