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/*******************************************************************************
* Copyright (c) 2013 Red Hat.
* 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:
* Red Hat - Andrew Ferrazzutti
*******************************************************************************/
package org.eclipse.linuxtools.systemtap.graphingapi.core.datasets.row;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import org.eclipse.linuxtools.systemtap.graphingapi.core.datasets.IDataEntry;
import org.eclipse.linuxtools.systemtap.graphingapi.core.datasets.IDataSetParser;
/**
* A DataSetParser for parsing a string, line-by-line, with a preconstructed
* single-line regex string.
*
* @author aferrazz
* @since 1.1
*
*/
public class LineParser implements IDataSetParser {
public LineParser(String regEx) {
wholePattern = Pattern.compile(regEx, Pattern.MULTILINE);
}
@Override
public IDataEntry parse(StringBuilder s) {
if(null == s) {
return null;
}
RowEntry e = null;
Matcher wholeMatcher = wholePattern.matcher(s);
if(wholeMatcher.find()) {
e = new RowEntry();
int groupCount = wholeMatcher.groupCount();
Object[] data = new Object[groupCount];
for(int i = 0; i < groupCount; i++) {
data[i] = wholeMatcher.group(i+1);
}
e.putRow(0, data);
s.delete(0, wholeMatcher.end());
}
return e;
}
private Pattern wholePattern;
}
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