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/*******************************************************************************
* Copyright (c) 2015 Red Hat, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v2.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Red Hat Inc. - initial API and implementation and/or initial documentation
*******************************************************************************/
package org.eclipse.wst.jsdt.js.cli.core;
import java.util.Scanner;
import org.eclipse.debug.core.IStreamListener;
import org.eclipse.debug.core.model.IStreamMonitor;
/**
* Stream listener for CLI output.
*
* @author Gorkem Ercan
*
*/
public class CLIStreamListener implements IStreamListener {
private static final String ERROR_PREFIX = "Error:"; //$NON-NLS-1$
private static final String WIN_ERROR_PATTERN = "is not recognized as an internal or external command"; //$NON-NLS-1$
private StringBuffer errorMessage = new StringBuffer();
private final StringBuffer message = new StringBuffer();
@Override
public void streamAppended(String text, IStreamMonitor monitor) {
final Scanner scanner = new Scanner(text);
boolean error = false;
while(scanner.hasNextLine()){
String line = scanner.nextLine();
line = line.trim(); // remove leading whitespace
if(line.startsWith(ERROR_PREFIX)){
error = true;
errorMessage = errorMessage.append(line.substring(ERROR_PREFIX.length(), line.length()));
} else if (line.contains(WIN_ERROR_PATTERN)) {
error = true;
errorMessage = errorMessage.append(line);
} else {
if(error){
errorMessage.append(System.lineSeparator());
errorMessage.append(line);
}
else{
message.append(line);
message.append(System.lineSeparator());
}
}
}
scanner.close();
}
/**
* Returns the last error message encountered.
* Can return empty String if no error messages are present
* @return last error message or empty string
*/
public String getErrorMessage() {
return errorMessage.toString();
}
/**
* Returns all the messages returned
* excluding the error messages
* @return
*/
public String getMessage(){
return message.toString();
}
}
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