1 files changed, 156 insertions, 0 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
new file mode 100644
index 00000000..672f0245
--- /dev/null
+++ b/src/main/java/com/gitblit/transport/ssh/commands/DispatchCommand.java
@@ -0,0 +1,156 @@
+// Copyright (C) 2009 The Android Open Source Project
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.gitblit.transport.ssh.commands;
+
+import java.io.IOException;
+import java.io.StringWriter;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import javax.inject.Provider;
+
+import org.apache.sshd.server.Command;
+import org.apache.sshd.server.Environment;
+import org.kohsuke.args4j.Argument;
+
+import com.gitblit.transport.ssh.CommandMetaData;
+import com.gitblit.utils.cli.SubcommandHandler;
+import com.google.common.base.Charsets;
+import com.google.common.base.Strings;
+import com.google.common.collect.Maps;
+import com.google.common.collect.Sets;
+
+public class DispatchCommand extends BaseCommand {
+
+  @Argument(index = 0, required = false, metaVar = "COMMAND", handler = SubcommandHandler.class)
+  private String commandName;
+
+  @Argument(index = 1, multiValued = true, metaVar = "ARG")
+  private List<String> args = new ArrayList<String>();
+
+  private Set<Provider<Command>> commands;
+  private Map<String, Provider<Command>> map;
+
+  public DispatchCommand() {}
+
+  public DispatchCommand(Map<String, Provider<Command>> map) {
+    this.map = map;
+  }
+
+  public void setMap(Map<String, Provider<Command>> m) {
+    map = m;
+  }
+
+  public DispatchCommand(Set<Provider<Command>> commands) {
+    this.commands = commands;
+  }
+
+  private Map<String, Provider<Command>> getMap() {
+    if (map == null) {
+      map = Maps.newHashMapWithExpectedSize(commands.size());
+      for (Provider<Command> cmd : commands) {
+        CommandMetaData meta = cmd.get().getClass().getAnnotation(CommandMetaData.class);
+        map.put(meta.name(), cmd);
+      }
+    }
+    return map;
+  }
+
+  @Override
+  public void start(Environment env) throws IOException {
+    try {
+      parseCommandLine();
+      if (Strings.isNullOrEmpty(commandName)) {
+        StringWriter msg = new StringWriter();
+        msg.write(usage());
+        throw new UnloggedFailure(1, msg.toString());
+      }
+
+      final Provider<Command> p = getMap().get(commandName);
+      if (p == null) {
+        String msg =
+            (getName().isEmpty() ? "Gitblit" : getName()) + ": "
+                + commandName + ": not found";
+        throw new UnloggedFailure(1, msg);
+      }
+
+      final Command cmd = p.get();
+      if (cmd instanceof BaseCommand) {
+        BaseCommand bc = (BaseCommand) cmd;
+        if (getName().isEmpty()) {
+          bc.setName(commandName);
+        } else {
+          bc.setName(getName() + " " + commandName);
+        }
+        bc.setArguments(args.toArray(new String[args.size()]));
+      } else if (!args.isEmpty()) {
+        throw new UnloggedFailure(1, commandName + " does not take arguments");
+      }
+
+      provideStateTo(cmd);
+      //atomicCmd.set(cmd);
+      cmd.start(env);
+
+    } catch (UnloggedFailure e) {
+      String msg = e.getMessage();
+      if (!msg.endsWith("\n")) {
+        msg += "\n";
+      }
+      err.write(msg.getBytes(Charsets.UTF_8));
+      err.flush();
+      exit.onExit(e.exitCode);
+    }
+  }
+
+  protected String usage() {
+    final StringBuilder usage = new StringBuilder();
+    usage.append("Available commands");
+    if (!getName().isEmpty()) {
+      usage.append(" of ");
+      usage.append(getName());
+    }
+    usage.append(" are:\n");
+    usage.append("\n");
+
+    int maxLength = -1;
+    Map<String, Provider<Command>> m = getMap();
+    for (String name : m.keySet()) {
+      maxLength = Math.max(maxLength, name.length());
+    }
+    String format = "%-" + maxLength + "s   %s";
+    for (String name : Sets.newTreeSet(m.keySet())) {
+      final Provider<Command> p = m.get(name);
+      usage.append("   ");
+      CommandMetaData meta = p.get().getClass().getAnnotation(CommandMetaData.class);
+      if (meta != null) {
+        usage.append(String.format(format, name,
+            Strings.nullToEmpty(meta.description())));
+      }
+      usage.append("\n");
+    }
+    usage.append("\n");
+
+    usage.append("See '");
+    if (getName().indexOf(' ') < 0) {
+      usage.append(getName());
+      usage.append(' ');
+    }
+    usage.append("COMMAND --help' for more information.\n");
+    usage.append("\n");
+    return usage.toString();
+  }
+}