/**
* Copyright 2005-2014 Restlet
*
* The contents of this file are subject to the terms of one of the following
* open source licenses: Apache 2.0 or or EPL 1.0 (the "Licenses"). You can
* select the license that you prefer but you may not use this file except in
* compliance with one of these Licenses.
*
* You can obtain a copy of the Apache 2.0 license at
* http://www.opensource.org/licenses/apache-2.0
*
* You can obtain a copy of the EPL 1.0 license at
* http://www.opensource.org/licenses/eclipse-1.0
*
* See the Licenses for the specific language governing permissions and
* limitations under the Licenses.
*
* Alternatively, you can obtain a royalty free commercial license with less
* limitations, transferable or non-transferable, directly at
* http://restlet.com/products/restlet-framework
*
* Restlet is a registered trademark of Restlet S.A.S.
*/
package com.google.gwt.emul.java.io;
import java.io.IOException;
/**
* Emulation of the {@link java.io.StringReader} class for the GWT edition.
*
* @author Jerome Louvel
*/
public class StringReader extends Reader {
/** The text to read. */
private final String text;
/** The next position to read. */
private int position;
/**
* Constructor.
*
* @param text
* The source text to read.
*/
public StringReader(String text) {
this.text = text;
this.position = 0;
}
/**
* Reads the next character in the source text.
*
* @return The next character or -1 if end of text is reached.
*/
public int read() throws IOException {
return (this.position == this.text.length()) ? -1 : this.text
.charAt(this.position++);
}
@Override
public void close() throws IOException {
}
@Override
public int read(char[] cbuf, int off, int len) throws IOException {
if (position >= text.length())
return -1;
int n = Math.min(text.length() - position, len);
text.getChars(position, position + n, cbuf, off);
position += n;
return n;
}
}