RFC: Ugly fix for i18n of metaVar CLI arguments

This patch possibly ties to a specific version of args4j.

Bug: 318286
Change-Id: I05d4ecf6bd25deec7fb2efbfa61913f4ec4e04e5
Signed-off-by: Robin Rosenberg <robin.rosenberg@dewire.com>

org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/CLIText.java

@@ -113,12 +113,43 @@ public class CLIText extends TranslationBundle {
 	/***/ public String mergeConflict;
 	/***/ public String mergeFailed;
 	/***/ public String mergeMadeBy;
+	/***/ public String metaVar_KEY;
+	/***/ public String metaVar_arg;
+	/***/ public String metaVar_author;
+	/***/ public String metaVar_bucket;
 	/***/ public String metaVar_command;
+	/***/ public String metaVar_commandDetail;
+	/***/ public String metaVar_commitOrTag;
+	/***/ public String metaVar_commitPaths;
 	/***/ public String metaVar_commitish;
+	/***/ public String metaVar_configFile;
+	/***/ public String metaVar_connProp;
+	/***/ public String metaVar_diffAlg;
+	/***/ public String metaVar_directory;
+	/***/ public String metaVar_file;
+	/***/ public String metaVar_gitDir;
+	/***/ public String metaVar_hostName;
+	/***/ public String metaVar_linesOfContext;
+	/***/ public String metaVar_message;
+	/***/ public String metaVar_n;
+	/***/ public String metaVar_name;
 	/***/ public String metaVar_object;
+	/***/ public String metaVar_op;
+	/***/ public String metaVar_pass;
+	/***/ public String metaVar_path;
 	/***/ public String metaVar_paths;
+	/***/ public String metaVar_port;
+	/***/ public String metaVar_ref;
+	/***/ public String metaVar_refs;
 	/***/ public String metaVar_refspec;
+	/***/ public String metaVar_remoteName;
+	/***/ public String metaVar_seconds;
+	/***/ public String metaVar_service;
 	/***/ public String metaVar_treeish;
+	/***/ public String metaVar_uriish;
+	/***/ public String metaVar_url;
+	/***/ public String metaVar_user;
+	/***/ public String metaVar_version;
 	/***/ public String mostCommonlyUsedCommandsAre;
 	/***/ public String needApprovalToDestroyCurrentRepository;
 	/***/ public String noGitRepositoryConfigured;

org.eclipse.jgit.pgm/src/org/eclipse/jgit/pgm/opt/CmdLineParser.java

@@ -43,12 +43,17 @@
 
 package org.eclipse.jgit.pgm.opt;
 
+import java.lang.reflect.Field;
 import java.util.ArrayList;
 
 import org.kohsuke.args4j.Argument;
 import org.kohsuke.args4j.CmdLineException;
 import org.kohsuke.args4j.IllegalAnnotationError;
+import org.kohsuke.args4j.NamedOptionDef;
 import org.kohsuke.args4j.Option;
+import org.kohsuke.args4j.OptionDef;
+import org.kohsuke.args4j.spi.OptionHandler;
+import org.kohsuke.args4j.spi.Setter;
 import org.eclipse.jgit.lib.ObjectId;
 import org.eclipse.jgit.lib.Repository;
 import org.eclipse.jgit.pgm.CLIText;
@@ -175,4 +180,35 @@ public class CmdLineParser extends org.kohsuke.args4j.CmdLineParser {
 	public RevWalk getRevWalkGently() {
 		return walk;
 	}
+
+	static class MyOptionDef extends OptionDef {
+
+		public MyOptionDef(OptionDef o) {
+			super(o.usage(), o.metaVar(), o.required(), o.handler(), o
+					.isMultiValued());
+		}
+
+		@Override
+		public String toString() {
+			if (metaVar() == null)
+				return "ARG";
+			try {
+				Field field = CLIText.class.getField(metaVar());
+				String ret = field.get(CLIText.get()).toString();
+				return ret;
+			} catch (Exception e) {
+				e.printStackTrace(System.err);
+				return metaVar();
+			}
+		}
+	}
+
+	@Override
+	protected OptionHandler createOptionHandler(OptionDef o, Setter setter) {
+		if (o instanceof NamedOptionDef)
+			return super.createOptionHandler(o, setter);
+		else
+			return super.createOptionHandler(new MyOptionDef(o), setter);
+
+	}
 }