[Jcommander-commit] plugins/org.jcommander.eclipsepatch.compare/compare/org/eclipse/compare/internal/merge MergeMessages.properties,NONE,1.1 MergeMessages.java,NONE,1.1 TextStreamMerger.java,NONE,1.1 LineComparator.java,NONE,1.1

[Matthias K <mat...@us...>]

Update of /cvsroot/jcommander/plugins/org.jcommander.eclipsepatch.compare/compare/org/eclipse/compare/internal/merge
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv5127/compare/org/eclipse/compare/internal/merge

Added Files:
	MergeMessages.properties MergeMessages.java 
	TextStreamMerger.java LineComparator.java 
Log Message:
org.eclipse.compare, extracted from the Eclipse CVS. Now independent of org.eclipse.ui.ide etc.

--- NEW FILE: MergeMessages.java ---
/*******************************************************************************
 * Copyright (c) 2000, 2005 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.compare.internal.merge;

import org.eclipse.osgi.util.NLS;

public final class MergeMessages extends NLS {

	private static final String BUNDLE_NAME = "org.eclipse.compare.internal.merge.MergeMessages";//$NON-NLS-1$

	private MergeMessages() {
		// Do not instantiate
	}

	public static String TextAutoMerge_inputEncodingError;
	public static String TextAutoMerge_outputEncodingError;
	public static String TextAutoMerge_outputIOError;
	public static String TextAutoMerge_conflict;

	static {
		NLS.initializeMessages(BUNDLE_NAME, MergeMessages.class);
	}
}
--- NEW FILE: MergeMessages.properties ---
###############################################################################
# Copyright (c) 2004 IBM Corporation and others.
# 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:
#     IBM Corporation - initial API and implementation
###############################################################################

TextAutoMerge_inputEncodingError= Unsupported encoding for input streams
TextAutoMerge_outputEncodingError= Unsupported encoding for output streams
TextAutoMerge_outputIOError= IO error on writing
TextAutoMerge_conflict= Conflict: cannot auto merge

--- NEW FILE: TextStreamMerger.java ---
/*******************************************************************************
 * Copyright (c) 2003, 2004 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.compare.internal.merge;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UnsupportedEncodingException;

import org.eclipse.compare.*;
import org.eclipse.compare.rangedifferencer.RangeDifference;
import org.eclipse.compare.rangedifferencer.RangeDifferencer;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;

/**
 * A simple merger for streams containing text lines.
 */
public class TextStreamMerger implements IStreamMerger {

	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.compare.internal.merge.IAutoMerger#automerge(java.io.OutputStream,
	 *      org.eclipse.core.resources.IEncodedStorage,
	 *      org.eclipse.core.resources.IEncodedStorage,
	 *      org.eclipse.core.resources.IEncodedStorage,
	 *      org.eclipse.core.runtime.IProgressMonitor)
	 */
	public IStatus merge(OutputStream output, String outputEncoding, InputStream ancestor, String ancestorEncoding, InputStream target, String targetEncoding, InputStream other, String otherEncoding, IProgressMonitor monitor) {

		LineComparator a, t, o;

		try {
			a= new LineComparator(ancestor, ancestorEncoding);
			t= new LineComparator(target, targetEncoding);
			o= new LineComparator(other, otherEncoding);
		} catch (UnsupportedEncodingException e) {
			return new Status(IStatus.ERROR, CompareUI.PLUGIN_ID, 1, MergeMessages.TextAutoMerge_inputEncodingError, e);
		}

		try {
			String lineSeparator= System.getProperty("line.separator"); //$NON-NLS-1$
			if (lineSeparator == null)
				lineSeparator= "\n"; //$NON-NLS-1$

			RangeDifference[] diffs= RangeDifferencer.findRanges(monitor, a, t, o);

			for (int i= 0; i < diffs.length; i++) {
				RangeDifference rd= diffs[i];
				switch (rd.kind()) {
				case RangeDifference.ANCESTOR: // pseudo conflict
				case RangeDifference.NOCHANGE:
				case RangeDifference.RIGHT:
					for (int j= rd.rightStart(); j < rd.rightEnd(); j++) {
						String s= o.getLine(j);
						output.write(s.getBytes(outputEncoding));
						output.write(lineSeparator.getBytes(outputEncoding));
					}
					break;

				case RangeDifference.LEFT:
					for (int j= rd.leftStart(); j < rd.leftEnd(); j++) {
						String s= t.getLine(j);
						output.write(s.getBytes(outputEncoding));
						output.write(lineSeparator.getBytes(outputEncoding));
					}
					break;

				case RangeDifference.CONFLICT:
					return new Status(IStatus.ERROR, CompareUI.PLUGIN_ID, CONFLICT, MergeMessages.TextAutoMerge_conflict, null);

				default:
					break;
				}
			}

		} catch (UnsupportedEncodingException e) {
			return new Status(IStatus.ERROR, CompareUI.PLUGIN_ID, 1, MergeMessages.TextAutoMerge_outputEncodingError, e);
		} catch (IOException e) {
			return new Status(IStatus.ERROR, CompareUI.PLUGIN_ID, 1, MergeMessages.TextAutoMerge_outputIOError, e);
		}

		return Status.OK_STATUS;
	}
}

--- NEW FILE: LineComparator.java ---
/*******************************************************************************
 * Copyright (c) 2004 IBM Corporation and others.
 * 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:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.compare.internal.merge;

import java.io.*;
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 UnsupportedEncodingException {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(is, encoding));
        String line;
        ArrayList ar = new ArrayList();
        try {
            while ((line = br.readLine()) != null)
                ar.add(line);
        } catch (IOException e) {
        		// silently ignored
        }
//        try {
//            is.close();
//        } catch (IOException e1) {
//        }
        fLines = (String[]) ar.toArray(new String[ar.size()]);
    }

    String getLine(int ix) {
        return fLines[ix];
    }

    /* (non-Javadoc)
     * @see org.eclipse.compare.rangedifferencer.IRangeComparator#getRangeCount()
     */
    public int getRangeCount() {
        return fLines.length;
    }

    /* (non-Javadoc)
     * @see org.eclipse.compare.rangedifferencer.IRangeComparator#rangesEqual(int, org.eclipse.compare.rangedifferencer.IRangeComparator, int)
     */
    public boolean rangesEqual(int thisIndex, IRangeComparator other,
            int otherIndex) {
        String s1 = fLines[thisIndex];
        String s2 = ((LineComparator) other).fLines[otherIndex];
        return s1.equals(s2);
    }

    /* (non-Javadoc)
     * @see org.eclipse.compare.rangedifferencer.IRangeComparator#skipRangeComparison(int, int, org.eclipse.compare.rangedifferencer.IRangeComparator)
     */
    public boolean skipRangeComparison(int length, int maxLength, IRangeComparator other) {
        return false;
    }
}