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/*******************************************************************************
* Copyright (c) 2007, 2012 Wind River Systems 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.dsf.debug.internal.ui.disassembly.text;
import java.io.IOException;
import java.nio.CharBuffer;
/**
* StringRider
*/
public class StringRider implements IFileRider {
CharBuffer fBuffer;
public StringRider(CharSequence text) {
super();
// create a readonly buffer
fBuffer = CharBuffer.wrap(text);
}
public StringRider(CharBuffer buffer) {
super();
fBuffer = buffer;
}
@Override
public void seek(int pos) throws IOException {
fBuffer.position(pos);
}
@Override
public void writeChar(char c) throws IOException {
fBuffer.put(c);
}
@Override
public void writeChars(char[] buf) throws IOException {
fBuffer.put(buf);
}
@Override
public void writeChars(char[] buf, int n) throws IOException {
fBuffer.put(buf, 0, n);
}
@Override
public void writeChars(char[] buf, int off, int n) throws IOException {
fBuffer.put(buf, off, n);
}
@Override
public void writeChars(String buf, int off, int n) throws IOException {
fBuffer.put(buf, off, off+n);
}
@Override
public char readChar() throws IOException {
return fBuffer.get();
}
@Override
public void readChars(char[] buf) throws IOException {
fBuffer.get(buf, 0, buf.length);
}
@Override
public void readChars(char[] buf, int n) throws IOException {
fBuffer.get(buf, 0, n);
}
@Override
public void readChars(char[] buf, int off, int n) throws IOException {
fBuffer.get(buf, off, n);
}
@Override
public void readChars(StringBuffer buf, int n) throws IOException {
int pos = fBuffer.position();
if (fBuffer.hasArray()) {
buf.append(fBuffer.array(), fBuffer.arrayOffset() + pos, n);
} else {
fBuffer.limit(pos+n);
String str = fBuffer.toString();
assert str.length() == n;
buf.append(str);
fBuffer.limit(fBuffer.capacity());
}
fBuffer.position(pos + n);
}
@Override
public int length() {
return fBuffer.length();
}
@Override
public int limit() {
return fBuffer.limit();
}
@Override
public boolean isReadonly() {
return fBuffer.isReadOnly();
}
}
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