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/*
* Copyright (C) 2009, Google Inc.
* Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org> 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.opt;
import java.io.IOException;
import org.eclipse.jgit.errors.IncorrectObjectTypeException;
import org.eclipse.jgit.errors.MissingObjectException;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.pgm.internal.CLIText;
import org.eclipse.jgit.revwalk.RevTree;
import org.kohsuke.args4j.CmdLineException;
import org.kohsuke.args4j.CmdLineParser;
import org.kohsuke.args4j.OptionDef;
import org.kohsuke.args4j.spi.OptionHandler;
import org.kohsuke.args4j.spi.Parameters;
import org.kohsuke.args4j.spi.Setter;
/**
* Custom argument handler {@link org.eclipse.jgit.revwalk.RevTree} from string
* values.
* <p>
* Assumes the parser has been initialized with a Repository.
*/
public class RevTreeHandler extends OptionHandler<RevTree> {
private final org.eclipse.jgit.pgm.opt.CmdLineParser clp;
/**
* Create a new handler for the command name.
* <p>
* This constructor is used only by args4j.
*
* @param parser
* a {@link org.kohsuke.args4j.CmdLineParser} object.
* @param option
* a {@link org.kohsuke.args4j.OptionDef} object.
* @param setter
* a {@link org.kohsuke.args4j.spi.Setter} object.
*/
public RevTreeHandler(final CmdLineParser parser, final OptionDef option,
final Setter<? super RevTree> setter) {
super(parser, option, setter);
clp = (org.eclipse.jgit.pgm.opt.CmdLineParser) parser;
}
/** {@inheritDoc} */
@Override
public int parseArguments(Parameters params) throws CmdLineException {
final String name = params.getParameter(0);
final ObjectId id;
try {
id = clp.getRepository().resolve(name);
} catch (IOException e) {
throw new CmdLineException(clp, CLIText.format(e.getMessage()));
}
if (id == null)
throw new CmdLineException(clp,
CLIText.format(CLIText.get().notATree), name);
final RevTree c;
try {
c = clp.getRevWalk().parseTree(id);
} catch (MissingObjectException | IncorrectObjectTypeException e) {
throw new CmdLineException(clp,
CLIText.format(CLIText.get().notATree), name);
} catch (IOException e) {
throw new CmdLineException(clp,
CLIText.format(CLIText.get().cannotReadBecause), name,
e.getMessage());
}
setter.addValue(c);
return 1;
}
/** {@inheritDoc} */
@Override
public String getDefaultMetaVariable() {
return CLIText.get().metaVar_treeish;
}
}
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