content: /*
   * Copyright (C) 2008 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.android.commands.svc;
  
  public class Svc {
  
      public static abstract class Command {
          private String mName;
  
          public Command(String name) {
              mName = name;
          }
  
          public String name() {
              return mName;
          }
  
          public abstract String shortHelp();         // should fit on one short line
          public abstract String longHelp();          // take as much space as you need, 75 col max
          public abstract void run(String[] args);    // run the command
      }
  
      public static void main(String[] args) {
          if (args.length >= 1) {
              Command c = lookupCommand(args[0]);
              if (c != null) {
                  c.run(args);
                  return;
              }
          }
          COMMAND_HELP.run(args);
      }
  
      private static Command lookupCommand(String name) {
          final int N = COMMANDS.length;
          for (int i=0; i<N; i++) {
              Command c = COMMANDS[i];
              if (c.name().equals(name)) {
                  return c;
              }
          }
          return null;
      }
  
      public static final Command COMMAND_HELP = new Command("help") {
          public String shortHelp() {
              return "Show information about the subcommands";
          }
          public String longHelp() {
              return shortHelp();
          }
          public void run(String[] args) {
              if (args.length == 2) {
                  Command c = lookupCommand(args[1]);
                  if (c != null) {
                      System.err.println(c.longHelp());
                      return;
                  }
              }
  
              System.err.println("Available commands:");
              final int N = COMMANDS.length;
              int maxlen = 0;
              for (int i=0; i<N; i++) {
                  Command c = COMMANDS[i];
                  int len = c.name().length();
                  if (maxlen < len) {
                      maxlen = len;
                  }
              }
              String format = "    %-" + maxlen + "s    %s";
              for (int i=0; i<N; i++) {
                  Command c = COMMANDS[i];
                  System.err.println(String.format(format, c.name(), c.shortHelp()));
              }
          }
      };
  
      public static final Command[] COMMANDS = new Command[] {
              COMMAND_HELP,
              new PowerCommand(),
              new DataCommand(),
              new WifiCommand(),
              new UsbCommand(),
              new NfcCommand(),
              new BluetoothCommand(),
              new SystemServerCommand(),
      };
  }
  