org.eclipse.text.readers.SingleCharacterReader Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2023 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.text.readers;
import java.io.IOException;
import java.io.Reader;
/**
*
* Moved into this package from org.eclipse.jface.internal.text.revisions.
*
* @since 3.14
*/
public abstract class SingleCharacterReader extends Reader {
/**
* @see Reader#read()
*/
@Override
public abstract int read() throws IOException;
/**
* @see Reader#read(char[],int,int)
*/
@Override
public int read(char cbuf[], int off, int len) throws IOException {
int end= off + len;
for (int i= off; i < end; i++) {
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 {
StringBuilder buf= new StringBuilder();
int ch;
while ((ch= read()) != -1) {
buf.append((char)ch);
}
return buf.toString();
}
}