/*
* Copyright (C) 2010-2016 JPEXS
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package com.jpexs.browsers.cache.chrome;
import java.io.IOException;
import java.io.InputStream;
/**
*
* @author JPEXS
*/
public class IndexInputStream extends InputStream {
private final InputStream is;
public long pos = 0;
public long getPos() {
return pos;
}
public IndexInputStream(InputStream is) {
this.is = is;
}
@Override
public int read() throws IOException {
int r = is.read();
//System.out.print("$"+Integer.toHexString(r));
pos++;
return r;
}
public long readUInt32() throws IOException {
long r = (((long) read()) + ((long) (read() << 8)) + ((long) (read() << 16)) + ((long) (read() << 24))) & 0xffffffffL;
//System.out.println("");
return r;
}
public long readUInt64() throws IOException {
return readUInt32() + (readUInt32() << 32);
}
public long readInt64() throws IOException {
return readUInt64(); //FIXME
}
public int readInt32() throws IOException {
return (int) readUInt32();
}
public int readInt16() throws IOException {
return (short) ((int) read() + (int) (read() << 8));
}
public long readInt() throws IOException {
return readInt32();
}
public String readString() throws IOException {
int len = (int) readInt();
byte[] data = new byte[len];
if (read(data) != len) {
throw new IOException();
}
return new String(data);
}
}