/*******************************************************************************
* Copyright (c) 2000, 2006 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.erlide.ui.util.eclipse.text;
import java.io.IOException;
import java.io.Reader;
/**
* <p>
* Moved into this package from
* <code>org.eclipse.jface.internal.text.revisions</code>.
* </p>
*/
public abstract class SingleCharReader extends Reader {
/**
* @see Reader#read()
*/
@Override
public abstract int read() throws IOException;
/**
* @see Reader#read(char[],int,int)
*/
@Override
public int read(final char cbuf[], final int off, final int len) throws IOException {
final int end = off + len;
for (int i = off; i < end; i++) {
final int ch = read();
if (ch == -1) {
if (i == off) {
return -1;
}
return i - off;
}
cbuf[i] = (char) ch;
}
return len;
}
/**
* @see Reader#ready()
*/
@Override
public boolean ready() throws IOException {
return true;
}
/**
* Returns the readable content as string.
*
* @return the readable content as string
* @exception IOException
* in case reading fails
*/
public String getString() throws IOException {
final StringBuffer buf = new StringBuffer();
int ch;
while ((ch = read()) != -1) {
buf.append((char) ch);
}
return buf.toString();
}
}