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/*
* Copyright (C) 2011, 2021 IBM Corporation 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.api;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.text.MessageFormat;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.api.errors.PatchApplyException;
import org.eclipse.jgit.api.errors.PatchFormatException;
import org.eclipse.jgit.internal.JGitText;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.patch.Patch;
import org.eclipse.jgit.patch.PatchApplier;
import org.eclipse.jgit.patch.PatchApplier.Result;
/**
* Apply a patch to files and/or to the index.
*
* @see <a href="http://www.kernel.org/pub/software/scm/git/docs/git-apply.html"
* >Git documentation about apply</a>
* @since 2.0
*/
public class ApplyCommand extends GitCommand<ApplyResult> {
private InputStream in;
/**
* Constructs the command.
*
* @param repo
* the repository this command will be used on
*/
ApplyCommand(Repository repo) {
super(repo);
if (repo == null) {
throw new NullPointerException(JGitText.get().repositoryIsRequired);
}
}
/**
* Set patch
*
* @param in
* the patch to apply
* @return this instance
*/
public ApplyCommand setPatch(InputStream in) {
checkCallable();
this.in = in;
return this;
}
/**
* {@inheritDoc}
*
* <p>
* Executes the {@code ApplyCommand} command with all the options and
* parameters collected by the setter methods (e.g.
* {@link #setPatch(InputStream)} of this class. Each instance of this class
* should only be used for one invocation of the command. Don't call this
* method twice on an instance.
*/
@Override
public ApplyResult call() throws GitAPIException {
checkCallable();
setCallable(false);
Patch patch = new Patch();
try (InputStream inStream = in) {
patch.parse(inStream);
if (!patch.getErrors().isEmpty()) {
throw new PatchFormatException(patch.getErrors());
}
} catch (IOException e) {
throw new PatchApplyException(MessageFormat.format(
JGitText.get().patchApplyException, e.getMessage()), e);
}
ApplyResult r = new ApplyResult();
try {
PatchApplier patchApplier = new PatchApplier(repo);
Result applyResult = patchApplier.applyPatch(patch);
if (!applyResult.getErrors().isEmpty()) {
throw new PatchApplyException(
MessageFormat.format(JGitText.get().patchApplyException,
applyResult.getErrors()));
}
for (String p : applyResult.getPaths()) {
r.addUpdatedFile(new File(repo.getWorkTree(), p));
}
} catch (IOException e) {
throw new PatchApplyException(MessageFormat.format(JGitText.get().patchApplyException,
e.getMessage(), e));
}
return r;
}
}
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