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/*******************************************************************************
* Copyright (c) 2004, 2017 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.compare.internal.merge;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import org.eclipse.compare.rangedifferencer.IRangeComparator;
/**
* This implementation of IRangeComparator breaks an input stream into lines.
*/
class LineComparator implements IRangeComparator {
private String[] fLines;
public LineComparator(InputStream is, String encoding) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(is, encoding));
String line;
ArrayList<String> ar = new ArrayList<>();
while ((line = br.readLine()) != null) {
ar.add(line);
}
// It is the responsibility of the caller to close the stream
fLines = ar.toArray(new String[ar.size()]);
}
String getLine(int ix) {
return fLines[ix];
}
@Override
public int getRangeCount() {
return fLines.length;
}
@Override
public boolean rangesEqual(int thisIndex, IRangeComparator other,
int otherIndex) {
String s1 = fLines[thisIndex];
String s2 = ((LineComparator) other).fLines[otherIndex];
return s1.equals(s2);
}
@Override
public boolean skipRangeComparison(int length, int maxLength, IRangeComparator other) {
return false;
}
}
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