/*******************************************************************************
* Copyright (c) 2000, 2015 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.help.internal.search;
import java.io.*;
/**
* High performance reader. Assumes the input stream is ASCII.
*/
public class ASCIIReader extends Reader {
private InputStream stream;
int bufSize;
byte[] buf;
/**
* @param stream
* InputStream
* @param bufSize
* size of internal buffer
*/
public ASCIIReader(InputStream stream, int bufSize) {
this.stream = stream;
this.bufSize = bufSize;
buf = new byte[bufSize];
}
/**
* @see java.io.Reader#read(char[], int, int)
*/
@Override
public int read(char[] cbuf, int off, int len) throws IOException {
int n = stream.read(buf, 0, Math.min(bufSize, len));
for (int i = 0; i < n; i++) {
cbuf[off + i] = (char) buf[i];
}
return n;
}
/**
* @see java.io.Reader#close()
*/
@Override
public void close() throws IOException {
stream.close();
}
}