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12 package org.eclipse.jgit.pgm.opt;
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14 import java.io.IOException;
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16 import org.eclipse.jgit.errors.IncorrectObjectTypeException;
17 import org.eclipse.jgit.errors.MissingObjectException;
18 import org.eclipse.jgit.lib.ObjectId;
19 import org.eclipse.jgit.pgm.internal.CLIText;
20 import org.eclipse.jgit.revwalk.RevTree;
21 import org.kohsuke.args4j.CmdLineException;
22 import org.kohsuke.args4j.CmdLineParser;
23 import org.kohsuke.args4j.OptionDef;
24 import org.kohsuke.args4j.spi.OptionHandler;
25 import org.kohsuke.args4j.spi.Parameters;
26 import org.kohsuke.args4j.spi.Setter;
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34 public class RevTreeHandler extends OptionHandler<RevTree> {
35 private final org.eclipse.jgit.pgm.opt.CmdLineParser clp;
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49 public RevTreeHandler(final CmdLineParser parser, final OptionDef option,
50 final Setter<? super RevTree> setter) {
51 super(parser, option, setter);
52 clp = (org.eclipse.jgit.pgm.opt.CmdLineParser) parser;
53 }
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55
56 @Override
57 public int parseArguments(Parameters params) throws CmdLineException {
58 final String name = params.getParameter(0);
59 final ObjectId id;
60 try {
61 id = clp.getRepository().resolve(name);
62 } catch (IOException e) {
63 throw new CmdLineException(clp, CLIText.format(e.getMessage()));
64 }
65 if (id == null)
66 throw new CmdLineException(clp,
67 CLIText.format(CLIText.get().notATree), name);
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69 final RevTree c;
70 try {
71 c = clp.getRevWalk().parseTree(id);
72 } catch (MissingObjectException | IncorrectObjectTypeException e) {
73 CmdLineException cle = new CmdLineException(clp,
74 CLIText.format(CLIText.get().notATree), name);
75 cle.initCause(e);
76 throw cle;
77 } catch (IOException e) {
78 throw new CmdLineException(clp,
79 CLIText.format(CLIText.get().cannotReadBecause), name,
80 e.getMessage());
81 }
82 setter.addValue(c);
83 return 1;
84 }
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86
87 @Override
88 public String getDefaultMetaVariable() {
89 return CLIText.get().metaVar_treeish;
90 }
91 }