123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231 |
- /*
- * Copyright (C) 2011, 2014 Christian Halstrick <christian.halstrick@sap.com> and others
- *
- * This program and the accompanying materials are made available under the
- * terms of the Eclipse Distribution License v. 1.0 which is available at
- * https://www.eclipse.org/org/documents/edl-v10.php.
- *
- * SPDX-License-Identifier: BSD-3-Clause
- */
-
- package org.eclipse.jgit.pgm;
-
- import java.io.IOException;
- import java.text.MessageFormat;
- import java.util.Map;
-
- import org.eclipse.jgit.api.Git;
- import org.eclipse.jgit.api.MergeCommand;
- import org.eclipse.jgit.api.MergeCommand.FastForwardMode;
- import org.eclipse.jgit.api.MergeResult;
- import org.eclipse.jgit.api.errors.CheckoutConflictException;
- import org.eclipse.jgit.api.errors.GitAPIException;
- import org.eclipse.jgit.lib.AnyObjectId;
- import org.eclipse.jgit.lib.Constants;
- import org.eclipse.jgit.lib.ObjectId;
- import org.eclipse.jgit.lib.Ref;
- import org.eclipse.jgit.merge.ContentMergeStrategy;
- import org.eclipse.jgit.merge.MergeStrategy;
- import org.eclipse.jgit.merge.ResolveMerger.MergeFailureReason;
- import org.eclipse.jgit.pgm.internal.CLIText;
- import org.eclipse.jgit.revwalk.RevCommit;
- import org.eclipse.jgit.revwalk.RevWalk;
- import org.kohsuke.args4j.Argument;
- import org.kohsuke.args4j.Option;
-
- @Command(common = true, usage = "usage_MergesTwoDevelopmentHistories")
- class Merge extends TextBuiltin {
-
- @Option(name = "--strategy", aliases = { "-s" }, usage = "usage_mergeStrategy")
- private String strategyName;
-
- @Option(name = "--squash", usage = "usage_squash")
- private boolean squash;
-
- @Option(name = "--no-commit", usage = "usage_noCommit")
- private boolean noCommit = false;
-
- private MergeStrategy mergeStrategy = MergeStrategy.RECURSIVE;
-
- @Argument(required = true, metaVar = "metaVar_ref", usage = "usage_mergeRef")
- private String ref;
-
- private FastForwardMode ff = FastForwardMode.FF;
-
- @Option(name = "--ff", usage = "usage_mergeFf")
- void ff(@SuppressWarnings("unused") final boolean ignored) {
- ff = FastForwardMode.FF;
- }
-
- @Option(name = "--no-ff", usage = "usage_mergeNoFf")
- void noff(@SuppressWarnings("unused") final boolean ignored) {
- ff = FastForwardMode.NO_FF;
- }
-
- @Option(name = "--ff-only", usage = "usage_mergeFfOnly")
- void ffonly(@SuppressWarnings("unused") final boolean ignored) {
- ff = FastForwardMode.FF_ONLY;
- }
-
- @Option(name = "-m", usage = "usage_message")
- private String message;
-
- private ContentMergeStrategy contentStrategy = null;
-
- @Option(name = "--strategy-option", aliases = { "-X" },
- metaVar = "metaVar_extraArgument", usage = "usage_extraArgument")
- void extraArg(String name) {
- if (ContentMergeStrategy.OURS.name().equalsIgnoreCase(name)) {
- contentStrategy = ContentMergeStrategy.OURS;
- } else if (ContentMergeStrategy.THEIRS.name().equalsIgnoreCase(name)) {
- contentStrategy = ContentMergeStrategy.THEIRS;
- } else {
- throw die(MessageFormat.format(CLIText.get().unknownExtraArgument, name));
- }
- }
-
- /** {@inheritDoc} */
- @Override
- protected void run() {
- if (squash && ff == FastForwardMode.NO_FF) {
- throw die(CLIText.get().cannotCombineSquashWithNoff);
- }
- // determine the merge strategy
- if (strategyName != null) {
- mergeStrategy = MergeStrategy.get(strategyName);
- if (mergeStrategy == null) {
- throw die(MessageFormat.format(
- CLIText.get().unknownMergeStrategy, strategyName));
- }
- }
-
- try {
- // determine the other revision we want to merge with HEAD
- final Ref srcRef = db.findRef(ref);
- final ObjectId src = db.resolve(ref + "^{commit}"); //$NON-NLS-1$
- if (src == null) {
- throw die(MessageFormat
- .format(CLIText.get().refDoesNotExistOrNoCommit, ref));
- }
-
- Ref oldHead = getOldHead();
- MergeResult result;
- try (Git git = new Git(db)) {
- MergeCommand mergeCmd = git.merge()
- .setStrategy(mergeStrategy)
- .setContentMergeStrategy(contentStrategy)
- .setSquash(squash)
- .setFastForward(ff)
- .setCommit(!noCommit);
- if (srcRef != null) {
- mergeCmd.include(srcRef);
- } else {
- mergeCmd.include(src);
- }
-
- if (message != null) {
- mergeCmd.setMessage(message);
- }
-
- try {
- result = mergeCmd.call();
- } catch (CheckoutConflictException e) {
- result = new MergeResult(e.getConflictingPaths()); // CHECKOUT_CONFLICT
- }
- }
-
- switch (result.getMergeStatus()) {
- case ALREADY_UP_TO_DATE:
- if (squash) {
- outw.print(CLIText.get().nothingToSquash);
- }
- outw.println(CLIText.get().alreadyUpToDate);
- break;
- case FAST_FORWARD:
- ObjectId oldHeadId = oldHead.getObjectId();
- if (oldHeadId != null) {
- String oldId = oldHeadId.abbreviate(7).name();
- String newId = result.getNewHead().abbreviate(7).name();
- outw.println(MessageFormat.format(CLIText.get().updating,
- oldId, newId));
- }
- outw.println(result.getMergeStatus().toString());
- break;
- case CHECKOUT_CONFLICT:
- outw.println(CLIText.get().mergeCheckoutConflict);
- for (String collidingPath : result.getCheckoutConflicts()) {
- outw.println("\t" + collidingPath); //$NON-NLS-1$
- }
- outw.println(CLIText.get().mergeCheckoutFailed);
- break;
- case CONFLICTING:
- for (String collidingPath : result.getConflicts().keySet())
- outw.println(MessageFormat.format(
- CLIText.get().mergeConflict, collidingPath));
- outw.println(CLIText.get().mergeFailed);
- break;
- case FAILED:
- for (Map.Entry<String, MergeFailureReason> entry : result
- .getFailingPaths().entrySet())
- switch (entry.getValue()) {
- case DIRTY_WORKTREE:
- case DIRTY_INDEX:
- outw.println(CLIText.get().dontOverwriteLocalChanges);
- outw.println(" " + entry.getKey()); //$NON-NLS-1$
- break;
- case COULD_NOT_DELETE:
- outw.println(CLIText.get().cannotDeleteFile);
- outw.println(" " + entry.getKey()); //$NON-NLS-1$
- break;
- }
- break;
- case MERGED:
- MergeStrategy strategy = isMergedInto(oldHead, src)
- ? MergeStrategy.RECURSIVE
- : mergeStrategy;
- outw.println(MessageFormat.format(CLIText.get().mergeMadeBy,
- strategy.getName()));
- break;
- case MERGED_NOT_COMMITTED:
- outw.println(
- CLIText.get().mergeWentWellStoppedBeforeCommitting);
- break;
- case MERGED_SQUASHED:
- case FAST_FORWARD_SQUASHED:
- case MERGED_SQUASHED_NOT_COMMITTED:
- outw.println(CLIText.get().mergedSquashed);
- outw.println(
- CLIText.get().mergeWentWellStoppedBeforeCommitting);
- break;
- case ABORTED:
- throw die(CLIText.get().ffNotPossibleAborting);
- case NOT_SUPPORTED:
- outw.println(MessageFormat.format(
- CLIText.get().unsupportedOperation, result.toString()));
- }
- } catch (GitAPIException | IOException e) {
- throw die(e.getMessage(), e);
- }
-
- }
-
- private Ref getOldHead() throws IOException {
- Ref oldHead = db.exactRef(Constants.HEAD);
- if (oldHead == null) {
- throw die(CLIText.get().onBranchToBeBorn);
- }
- return oldHead;
- }
-
- private boolean isMergedInto(Ref oldHead, AnyObjectId src)
- throws IOException {
- try (RevWalk revWalk = new RevWalk(db)) {
- ObjectId oldHeadObjectId = oldHead.getPeeledObjectId();
- if (oldHeadObjectId == null)
- oldHeadObjectId = oldHead.getObjectId();
- RevCommit oldHeadCommit = revWalk.lookupCommit(oldHeadObjectId);
- RevCommit srcCommit = revWalk.lookupCommit(src);
- return revWalk.isMergedInto(oldHeadCommit, srcCommit);
- }
- }
- }
|