/*******************************************************************************
* Copyright (c) 2000, 2012 QNX Software Systems 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:
* QNX Software Systems - Initial API and implementation
* Anton Leherbauer (Wind River Systems)
*******************************************************************************/
package org.eclipse.cdt.utils.elf.parser;
import java.io.EOFException;
import java.io.IOException;
import org.eclipse.cdt.core.AbstractCExtension;
import org.eclipse.cdt.core.CCorePlugin;
import org.eclipse.cdt.core.IBinaryParser;
import org.eclipse.cdt.utils.AR;
import org.eclipse.cdt.utils.elf.Elf;
import org.eclipse.cdt.utils.elf.Elf.Attribute;
import org.eclipse.core.runtime.IPath;
/**
*/
public class ElfParser extends AbstractCExtension implements IBinaryParser {
/* (non-Javadoc)
* @see org.eclipse.cdt.core.IBinaryParser#getBinary(org.eclipse.core.runtime.IPath)
*/
@Override
public IBinaryFile getBinary(IPath path) throws IOException {
return getBinary(null, path);
}
@Override
public IBinaryFile getBinary(byte[] hints, IPath path) throws IOException {
if (path == null) {
throw new IOException(CCorePlugin.getResourceString("Util.exception.nullPath")); //$NON-NLS-1$
}
IBinaryFile binary = null;
if (hints != null && AR.isARHeader(hints)) {
binary = createBinaryArchive(path);
} else {
try {
Elf.Attribute attribute = null;
if (hints != null && Elf.isElfHeader(hints)) {
try {
attribute = Elf.getAttributes(hints);
} catch (EOFException eof) {
// continue, the array was to small.
}
}
//Take a second run at it if the data array failed.
if(attribute == null) {
attribute = Elf.getAttributes(path.toOSString());
}
if (attribute != null) {
switch (attribute.getType()) {
case Attribute.ELF_TYPE_EXE :
binary = createBinaryExecutable(path);
break;
case Attribute.ELF_TYPE_SHLIB :
binary = createBinaryShared(path);
break;
case Attribute.ELF_TYPE_OBJ :
binary = createBinaryObject(path);
break;
case Attribute.ELF_TYPE_CORE :
binary = createBinaryCore(path);
break;
}
if (binary instanceof ElfBinaryObject) {
((ElfBinaryObject)binary).setElfAttributes(attribute);
}
}
} catch (IOException e) {
if (hints == null) {
try {
binary = createBinaryArchive(path);
} catch (IOException e2) {
CCorePlugin.log(e); // log original exception
throw e2;
}
}
}
}
return binary;
}
/**
* @see org.eclipse.cdt.core.IBinaryParser#getFormat()
*/
@Override
public String getFormat() {
return "ELF"; //$NON-NLS-1$
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.IBinaryParser#isBinary(byte[], org.eclipse.core.runtime.IPath)
*/
@Override
public boolean isBinary(byte[] array, IPath path) {
return Elf.isElfHeader(array) || AR.isARHeader(array);
}
/* (non-Javadoc)
* @see org.eclipse.cdt.core.IBinaryParser#getBufferSize()
*/
@Override
public int getHintBufferSize() {
return 128;
}
protected IBinaryArchive createBinaryArchive(IPath path) throws IOException {
return new ElfBinaryArchive(this, path);
}
protected IBinaryObject createBinaryObject(IPath path) throws IOException {
return new ElfBinaryObject(this, path, IBinaryFile.OBJECT);
}
protected IBinaryExecutable createBinaryExecutable(IPath path) throws IOException {
return new ElfBinaryExecutable(this, path);
}
protected IBinaryShared createBinaryShared(IPath path) throws IOException {
return new ElfBinaryShared(this, path);
}
protected IBinaryObject createBinaryCore(IPath path) throws IOException {
return new ElfBinaryObject(this, path, IBinaryFile.CORE);
}
}