From 67351aa5c1359aeefca5ddd299c262317636619d Mon Sep 17 00:00:00 2001
From: James Moger <james.moger@gitblit.com>
Date: Thu, 10 Apr 2014 18:58:09 -0400
Subject: [PATCH] Catch dispatchers registered through registerCommand

---
 src/main/java/com/gitblit/transport/ssh/commands/DispatchCommand.java |   58 +++++++++++++++++++++++++++++++++++++++++++++++-----------
 1 files changed, 47 insertions(+), 11 deletions(-)

diff --git a/src/main/java/com/gitblit/transport/ssh/commands/DispatchCommand.java b/src/main/java/com/gitblit/transport/ssh/commands/DispatchCommand.java
index 76012a2..b5d131f 100644
--- a/src/main/java/com/gitblit/transport/ssh/commands/DispatchCommand.java
+++ b/src/main/java/com/gitblit/transport/ssh/commands/DispatchCommand.java
@@ -102,13 +102,20 @@
 
 		CommandMetaData meta = dispatcherClass.getAnnotation(CommandMetaData.class);
 		if (meta.admin() && !user.canAdmin()) {
-			log.debug(MessageFormat.format("excluding admin dispatcher {0} for {1}", meta.name(), user.username));
+			log.debug(MessageFormat.format("excluding admin dispatcher {0} for {1}",
+					meta.name(), user.username));
 			return;
 		}
 
-		log.debug("registering {} dispatcher", meta.name());
 		try {
 			dispatcher.registerCommands(user);
+			if (dispatcher.commands.isEmpty() && dispatcher.dispatchers.isEmpty()) {
+				log.debug(MessageFormat.format("excluding empty dispatcher {0} for {1}",
+						meta.name(), user.username));
+				return;
+			}
+
+			log.debug("registering {} dispatcher", meta.name());
 			dispatchers.put(meta.name(), dispatcher);
 			for (String alias : meta.aliases()) {
 				aliasToCommand.put(alias, meta.name());
@@ -122,7 +129,6 @@
 		}
 	}
 
-
 	protected abstract void registerCommands(UserModel user);
 
 	/**
@@ -132,6 +138,11 @@
 	 * @param cmd
 	 */
 	protected void registerCommand(UserModel user, Class<? extends BaseCommand> cmd) {
+		if (DispatchCommand.class.isAssignableFrom(cmd)) {
+			log.warn("{} tried to register {} with registerCommand", getName(), cmd.getName());
+			registerDispatcher(user, (Class<? extends DispatchCommand>) cmd);
+			return;
+		}
 		if (!cmd.isAnnotationPresent(CommandMetaData.class)) {
 			throw new RuntimeException(MessageFormat.format("{0} must be annotated with {1}!", cmd.getName(),
 					CommandMetaData.class.getName()));
@@ -151,6 +162,11 @@
 	 * @param cmd
 	 */
 	protected void registerCommand(UserModel user, BaseCommand cmd) {
+		if (DispatchCommand.class.isAssignableFrom(cmd.getClass())) {
+			log.warn("{} tried to register {} dispatcher with registerCommand", getName(), cmd.getName());
+			registerDispatcher(user, (DispatchCommand) cmd);
+			return;
+		}
 		if (!cmd.getClass().isAnnotationPresent(CommandMetaData.class)) {
 			throw new RuntimeException(MessageFormat.format("{0} must be annotated with {1}!", cmd.getName(),
 					CommandMetaData.class.getName()));
@@ -259,10 +275,27 @@
 		return cmd;
 	}
 
+	private boolean hasVisibleCommands() {
+		boolean visible = false;
+		for (Class<? extends BaseCommand> cmd : commands) {
+			visible  |= !cmd.getAnnotation(CommandMetaData.class).hidden();
+			if (visible) {
+				return true;
+			}
+		}
+		for (DispatchCommand cmd : dispatchers.values()) {
+			visible |= cmd.hasVisibleCommands();
+			if (visible) {
+				return true;
+			}
+		}
+		return false;
+	}
+
 	@Override
 	public String usage() {
-		Set<String> commands = new TreeSet<String>();
-		Set<String> dispatchers = new TreeSet<String>();
+		Set<String> cmds = new TreeSet<String>();
+		Set<String> dcs = new TreeSet<String>();
 		Map<String, String> displayNames = Maps.newHashMap();
 		int maxLength = -1;
 		Map<String, Class<? extends BaseCommand>> m = getMap();
@@ -281,15 +314,18 @@
 
 			maxLength = Math.max(maxLength, displayName.length());
 			if (DispatchCommand.class.isAssignableFrom(c)) {
-				dispatchers.add(name);
+				DispatchCommand d = dispatchers.get(name);
+				if (d.hasVisibleCommands()) {
+					dcs.add(name);
+				}
 			} else {
-				commands.add(name);
+				cmds.add(name);
 			}
 		}
 		String format = "%-" + maxLength + "s   %s";
 
 		final StringBuilder usage = new StringBuilder();
-		if (!commands.isEmpty()) {
+		if (!cmds.isEmpty()) {
 			usage.append("Available commands");
 			if (!getName().isEmpty()) {
 				usage.append(" of ");
@@ -297,7 +333,7 @@
 			}
 			usage.append(" are:\n");
 			usage.append("\n");
-			for (String name : commands) {
+			for (String name : cmds) {
 				final Class<? extends Command> c = m.get(name);
 				String displayName = displayNames.get(name);
 				CommandMetaData meta = c.getAnnotation(CommandMetaData.class);
@@ -308,7 +344,7 @@
 			usage.append("\n");
 		}
 
-		if (!dispatchers.isEmpty()) {
+		if (!dcs.isEmpty()) {
 			usage.append("Available command dispatchers");
 			if (!getName().isEmpty()) {
 				usage.append(" of ");
@@ -316,7 +352,7 @@
 			}
 			usage.append(" are:\n");
 			usage.append("\n");
-			for (String name : dispatchers) {
+			for (String name : dcs) {
 				final Class<? extends BaseCommand> c = m.get(name);
 				String displayName = displayNames.get(name);
 				CommandMetaData meta = c.getAnnotation(CommandMetaData.class);

--
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