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/*
* Copyright (C) 2009, Google Inc.
* Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
* 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.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 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
* @param option
* @param setter
*/
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;
}
@Override
public int parseArguments(final 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 e) {
throw new CmdLineException(clp,
CLIText.format(CLIText.get().notATree), name);
} catch (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;
}
@Override
public String getDefaultMetaVariable() {
return CLIText.get().metaVar_treeish;
}
}
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