package webraveler.io;

import java.io.*;

/* InputStream for when we have a Transfer-length or Content-length header telling us how long the body is.*/
public class FixedLengthInputStream extends InputStream{
    /* instance variables */
    int bytesAllowed;
    int bytesRead;
    InputStream input;

    /* constructors */
    public FixedLengthInputStream(InputStream in, int length){
	bytesAllowed= length;
	bytesRead= 0;
	input= in;
    }

    public int read() throws IOException{
	if( bytesRead < bytesAllowed ){
	    bytesRead++;
	    return input.read();
	} else {
	    return -1;
	}
    }

    public void close() throws IOException{
    }
}