Re: Piggypack Encoding/Decoding on RandomAccessFile

From:
Knute Johnson <nospam@knutejohnson.com>
Newsgroups:
comp.lang.java.programmer
Date:
Thu, 03 Nov 2011 16:17:07 -0700
Message-ID:
<j8v7da$p5u$1@dont-email.me>
On 11/3/2011 1:52 PM, markspace wrote:

On 11/3/2011 12:50 PM, Jan Burse wrote:

Joshua Cranmer schrieb:

The "standard way" (at least, all of the use cases I've ever had for
RandomAccessFile) effectively uses the methods that are associated with
java.io.DataInput to read data: read(byte[]), and read*().


I would like to use an arbirary encoding/decoding on top of the
byte stream to get a character stream. But since RandomAccessFile
does not implement InputStream/OutputStream, I cannot create
a InputStreamReader/OutputStreamWrite on top.

Bye


5 minutes, untested:

package quicktest;

import java.io.IOException;
import java.io.InputStream;
import java.io.RandomAccessFile;

/**
*
* @author Brenden
*/
public class RndFileStream extends InputStream {

private final RandomAccessFile raf;

public RndFileStream(RandomAccessFile raf) {
this.raf = raf;
}

@Override
public int read() throws IOException {
return raf.read();
}

public void seek( long pos ) throws IOException {
raf.seek(pos);
}

}


I like that, I'm going to have to give it a try.

--

Knute Johnson

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