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- /*
- * Copyright (C) 2009, Christian Halstrick <christian.halstrick@sap.com>
- * Copyright (C) 2014, André de Oliveira <andre.oliveira@liferay.com>
- * and other copyright owners as documented in the project's IP log.
- *
- * This program and the accompanying materials are made available
- * under the terms of the Eclipse Distribution License v1.0 which
- * accompanies this distribution, is reproduced below, and is
- * available at http://www.eclipse.org/org/documents/edl-v10.php
- *
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or
- * without modification, are permitted provided that the following
- * conditions are met:
- *
- * - Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * - Redistributions in binary form must reproduce the above
- * copyright notice, this list of conditions and the following
- * disclaimer in the documentation and/or other materials provided
- * with the distribution.
- *
- * - Neither the name of the Eclipse Foundation, Inc. nor the
- * names of its contributors may be used to endorse or promote
- * products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
- * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
- * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
- package org.eclipse.jgit.merge;
-
- import java.io.IOException;
- import java.io.OutputStream;
- import java.util.List;
-
- import org.eclipse.jgit.diff.RawText;
- import org.eclipse.jgit.merge.MergeChunk.ConflictState;
-
- class MergeFormatterPass {
-
- private final EolAwareOutputStream out;
-
- private final MergeResult<RawText> res;
-
- private final List<String> seqName;
-
- private final String charsetName;
-
- private final boolean threeWayMerge;
-
- private String lastConflictingName; // is set to non-null whenever we are in
- // a conflict
-
- MergeFormatterPass(OutputStream out, MergeResult<RawText> res, List<String> seqName,
- String charsetName) {
- this.out = new EolAwareOutputStream(out);
- this.res = res;
- this.seqName = seqName;
- this.charsetName = charsetName;
- this.threeWayMerge = (res.getSequences().size() == 3);
- }
-
- void formatMerge() throws IOException {
- boolean missingNewlineAtEnd = false;
- for (MergeChunk chunk : res) {
- RawText seq = res.getSequences().get(chunk.getSequenceIndex());
- writeConflictMetadata(chunk);
- // the lines with conflict-metadata are written. Now write the chunk
- for (int i = chunk.getBegin(); i < chunk.getEnd(); i++)
- writeLine(seq, i);
- missingNewlineAtEnd = seq.isMissingNewlineAtEnd();
- }
- // one possible leftover: if the merge result ended with a conflict we
- // have to close the last conflict here
- if (lastConflictingName != null)
- writeConflictEnd();
- if (!missingNewlineAtEnd)
- out.beginln();
- }
-
- private void writeConflictMetadata(MergeChunk chunk) throws IOException {
- if (lastConflictingName != null
- && chunk.getConflictState() != ConflictState.NEXT_CONFLICTING_RANGE) {
- // found the end of an conflict
- writeConflictEnd();
- }
- if (chunk.getConflictState() == ConflictState.FIRST_CONFLICTING_RANGE) {
- // found the start of an conflict
- writeConflictStart(chunk);
- } else if (chunk.getConflictState() == ConflictState.NEXT_CONFLICTING_RANGE) {
- // found another conflicting chunk
- writeConflictChange(chunk);
- }
- }
-
- private void writeConflictEnd() throws IOException {
- writeln(">>>>>>> " + lastConflictingName); //$NON-NLS-1$
- lastConflictingName = null;
- }
-
- private void writeConflictStart(MergeChunk chunk) throws IOException {
- lastConflictingName = seqName.get(chunk.getSequenceIndex());
- writeln("<<<<<<< " + lastConflictingName); //$NON-NLS-1$
- }
-
- private void writeConflictChange(MergeChunk chunk) throws IOException {
- /*
- * In case of a non-three-way merge I'll add the name of the conflicting
- * chunk behind the equal signs. I also append the name of the last
- * conflicting chunk after the ending greater-than signs. If somebody
- * knows a better notation to present non-three-way merges - feel free
- * to correct here.
- */
- lastConflictingName = seqName.get(chunk.getSequenceIndex());
- writeln(threeWayMerge ? "=======" : "======= " //$NON-NLS-1$ //$NON-NLS-2$
- + lastConflictingName);
- }
-
- private void writeln(String s) throws IOException {
- out.beginln();
- out.write((s + "\n").getBytes(charsetName)); //$NON-NLS-1$
- }
-
- private void writeLine(RawText seq, int i) throws IOException {
- out.beginln();
- seq.writeLine(out, i);
- // still BOL? It was a blank line. But writeLine won't lf, so we do.
- if (out.isBeginln())
- out.write('\n');
- }
- }
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