101 lines
2.9 KiB
Java
101 lines
2.9 KiB
Java
/*
|
|
* ByteArraySeekableSource.java
|
|
*
|
|
* Created on May 17, 2006, 12:41 PM
|
|
* Copyright (c) 2006 Heiko Klein
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a
|
|
* copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom the
|
|
* Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
|
* IN THE SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
package net.minecraftforge.fml.repackage.com.nothome.delta;
|
|
|
|
import java.io.IOException;
|
|
import java.nio.ByteBuffer;
|
|
|
|
/**
|
|
* Wraps a byte buffer as a source
|
|
*/
|
|
public class ByteBufferSeekableSource implements SeekableSource {
|
|
|
|
private ByteBuffer bb;
|
|
private ByteBuffer cur;
|
|
|
|
/**
|
|
* Constructs a new ByteArraySeekableSource.
|
|
*/
|
|
public ByteBufferSeekableSource(byte[] source) {
|
|
this(ByteBuffer.wrap(source));
|
|
}
|
|
|
|
/**
|
|
* Constructs a new ByteArraySeekableSource.
|
|
*/
|
|
public ByteBufferSeekableSource(ByteBuffer bb) {
|
|
if (bb == null)
|
|
throw new NullPointerException("bb");
|
|
this.bb = bb;
|
|
bb.rewind();
|
|
try {
|
|
seek(0);
|
|
} catch (IOException e) {
|
|
throw new RuntimeException(e);
|
|
}
|
|
}
|
|
|
|
@Override
|
|
public void seek(long pos) throws IOException {
|
|
cur = bb.slice();
|
|
if (pos > cur.limit())
|
|
throw new IOException("pos " + pos + " cannot seek " + cur.limit());
|
|
cur.position((int) pos);
|
|
}
|
|
|
|
@Override
|
|
public int read(ByteBuffer dest) throws IOException {
|
|
if (!cur.hasRemaining())
|
|
return -1;
|
|
int c = 0;
|
|
while (cur.hasRemaining() && dest.hasRemaining()) {
|
|
dest.put(cur.get());
|
|
c++;
|
|
}
|
|
return c;
|
|
}
|
|
|
|
@Override
|
|
public void close() throws IOException {
|
|
bb = null;
|
|
cur = null;
|
|
}
|
|
|
|
/**
|
|
* Returns a debug <code>String</code>.
|
|
*/
|
|
@Override
|
|
public String toString()
|
|
{
|
|
return "BBSeekable" +
|
|
" bb=" + this.bb.position() + "-" + bb.limit() +
|
|
" cur=" + this.cur.position() + "-" + cur.limit() +
|
|
"";
|
|
}
|
|
|
|
}
|