tools/mconfig/mconfig.cs

   1 //
   2 // Authors:
   3 //   Marek Habersack (mhabersack@novell.com)
   4 //
   5 // (C) 2007 Novell, Inc
   6 //
   7
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 using System;
  29 using System.Collections.Generic;
  30 using System.IO;
  31 using System.Reflection;
  32
  33 namespace Mono.MonoConfig
  34 {
  35         delegate int HandleCommand (MConfigOptions options, Configuration config);
  36
  37         struct CommandHandler {
  38                 public readonly HandleCommand Handler;
  39                 public readonly string[] Names;
  40
  41                 public CommandHandler (string[] names, HandleCommand handler)
  42                 {
  43                         this.Names = names;
  44                         this.Handler = handler;
  45                 }
  46         };
  47
  48         class MConfigOptions
  49         {
  50                 string[] usage = {
  51                         "Usage: mconfig [options] command [command_parameters]",
  52                         "Options:",
  53                         "",
  54                         "  -?,-h,--help                      Display this usage information",
  55                         "  -v,--version                      Display version information",
  56                         "  -c,--config=<filepath>            Read the specified config file in addition to",
  57                         "                                    the standard ones. Settings in this file override ones",
  58                         "                                    in the other files.",
  59                         "  -t,--target={any,web,application} Use this target when executing 'command'",
  60                         "",
  61                         "To see the list of commands, features and default config file templates, run mconfig",
  62                         "without any parameters"
  63                 };
  64
  65                 string[] usageCommands = {
  66                         "Available commands (see 'man mconfig' for details):",
  67                         "  {addfeature,af} <feature_name> [config_file_path]",
  68                         "     Add the named feature to the specified config file",
  69                         "",
  70                         "  {defconfig,dc} [template_name] [target_directory]",
  71                         "     Write a config file based on the named template.",
  72                         ""
  73                 };
  74
  75                 List <string> plain_arguments;
  76                 Dictionary <string, string> unknown_arguments;
  77
  78                 public string ConfigFile;
  79                 public FeatureTarget Target = FeatureTarget.Any;
  80
  81                 public Dictionary <string, string> UnknownArguments {
  82                         get {
  83                                 if (unknown_arguments == null || unknown_arguments.Count == 0)
  84                                         return null;
  85
  86                                 return unknown_arguments;
  87                         }
  88                 }
  89
  90                 public string[] PlainArguments {
  91                         get {
  92                                 if (plain_arguments == null || plain_arguments.Count == 0)
  93                                         return null;
  94
  95                                 return plain_arguments.ToArray ();
  96                         }
  97                 }
  98
  99                 public MConfigOptions ()
 100                 {
 101                         unknown_arguments = new Dictionary <string, string> ();
 102                         plain_arguments = new List <string> ();
 103                 }
 104
 105                 public void Parse (string[] args)
 106                 {
 107                         if (args == null || args.Length == 0)
 108                                 return;
 109
 110                         int len = args.Length;
 111                         string arg;
 112
 113                         for (int i = 0; i < len; i++) {
 114                                 arg = args [i];
 115
 116                                 switch (arg [0]) {
 117                                         case '-':
 118                                         case '/':
 119                                                 i += ProcessArgument (i, arg, args, len);
 120                                                 break;
 121
 122                                         default:
 123                                                 plain_arguments.Add (arg);
 124                                                 break;
 125                                 }
 126                         }
 127                 }
 128
 129                 static char[] paramStartChars = {':', '='};
 130
 131                 int ProcessArgument (int idx, string argument, string[] args, int argsLen)
 132                 {
 133                         int argnameIdx = 1;
 134                         bool haveMoreDashes = false, badArg = false;
 135                         int argumentLen = argument.Length;
 136
 137                         if (argumentLen < 2)
 138                                 badArg = true;
 139
 140                         haveMoreDashes = !badArg && (argument [1] == '-');
 141
 142                         if (argumentLen == 2 && haveMoreDashes)
 143                                 badArg = true;
 144
 145                         if (badArg) {
 146                                 Console.Error.WriteLine ("Invalid argument: {0}", argument);
 147                                 Environment.Exit (1);
 148                         }
 149
 150                         if (haveMoreDashes)
 151                                 argnameIdx++;
 152
 153                         int paramPos = argument.IndexOfAny (paramStartChars, argnameIdx);
 154                         bool haveParam = true;
 155
 156                         if (paramPos == -1) {
 157                                 haveParam = false;
 158                                 paramPos = argumentLen;
 159                         }
 160
 161                         string argName = argument.Substring (argnameIdx, paramPos - argnameIdx);
 162                         string argParam = haveParam ? argument.Substring (paramPos + 1) : null;
 163
 164                         int ret = 0;
 165
 166                         if (!haveParam && haveMoreDashes) {
 167                                 idx++;
 168                                 if (idx < argsLen) {
 169                                         argParam = args [idx];
 170                                         ret++;
 171                                         haveParam = true;
 172                                 }
 173                         }
 174
 175                         switch (argName) {
 176                                 case "?":
 177                                 case "h":
 178                                 case "help":
 179                                         Usage ();
 180                                         break;
 181
 182                                 case "v":
 183                                 case "version":
 184                                         ShowVersion ();
 185                                         break;
 186
 187                                 case "t":
 188                                 case "target":
 189                                         if (!haveParam)
 190                                                 RequiredParameterMissing (argName);
 191
 192                                         try {
 193                                                 Target = Helpers.ConvertEnum <FeatureTarget> (argParam, "target");
 194                                         } catch (Exception ex) {
 195                                                 OptionParameterError (argName, ex.Message);
 196                                         }
 197                                         break;
 198
 199                                 default:
 200                                         unknown_arguments.Add (argName, argParam);
 201                                         break;
 202                         }
 203
 204                         return ret;
 205                 }
 206
 207                 void RequiredParameterMissing (string argName)
 208                 {
 209                         Console.Error.WriteLine ("Argument '{0}' requires a parameter", argName);
 210                         Environment.Exit (1);
 211                 }
 212
 213                 void OptionParameterError (string argName, string message)
 214                 {
 215                         Console.Error.WriteLine ("Parameter value is invalid for argument '{0}'.",
 216                                                  argName);
 217                         Console.Error.WriteLine (message);
 218                         Environment.Exit (1);
 219                 }
 220
 221                 void ShowUsage (string[] msg, bool exit)
 222                 {
 223                         foreach (string line in msg)
 224                                 Console.WriteLine (line);
 225                         if (exit)
 226                                 Environment.Exit (1);
 227                 }
 228
 229                 public void Usage ()
 230                 {
 231                         ShowUsage (usage, true);
 232                 }
 233
 234                 public void UsageCommands ()
 235                 {
 236                         ShowUsage (usageCommands, false);
 237                 }
 238
 239                 void ShowVersion ()
 240                 {
 241                         Assembly asm = Assembly.GetExecutingAssembly () ?? Assembly.GetCallingAssembly ();
 242                         object[] attrs = asm != null ? asm.GetCustomAttributes (false) : null;
 243                         string product = "mconfig", version = "0.0.0.0", copyright = "", description = "";
 244
 245                         if (asm != null) {
 246                                 Version v = asm.GetName ().Version;
 247                                 if (v != null)
 248                                         version = v.ToString ();
 249                         }
 250
 251                         if (attrs != null) {
 252                                 foreach (object o in attrs) {
 253                                         if (o is AssemblyProductAttribute)
 254                                                 product = ((AssemblyProductAttribute)o).Product;
 255                                         else if (o is AssemblyCopyrightAttribute)
 256                                                 copyright = ((AssemblyCopyrightAttribute)o).Copyright;
 257                                         else if (o is AssemblyDescriptionAttribute)
 258                                                 description = ((AssemblyDescriptionAttribute)o).Description;
 259                                 }
 260                         } else
 261                                 Console.WriteLine ("Missing version information");
 262
 263                         Console.WriteLine ("{0} - {1} {2}", product, description, version);
 264                         Console.WriteLine (copyright);
 265
 266                         Environment.Exit (1);
 267                 }
 268         }
 269
 270         class MConfig
 271         {
 272                 static string[] configPaths = {
 273                         Constants.GlobalConfigPath,
 274                         Path.Combine (ConfigPath, "config.xml"),
 275                         Path.Combine (".", "mconfig.xml"),
 276                         null
 277                 };
 278
 279                 static CommandHandler[] commands = {
 280                         new CommandHandler (new string[] {"addfeature", "af"}, HandleAddFeature),
 281                         new CommandHandler (new string[] {"defconfig", "dc"}, HandleDefaultConfig)
 282                 };
 283
 284                 static string ConfigPath {
 285                         get {
 286                                 string configPath = Environment.GetEnvironmentVariable ("XDG_CONFIG_HOME");
 287                                 if (String.IsNullOrEmpty (configPath))
 288                                         configPath = Path.Combine (Environment.GetEnvironmentVariable ("HOME"), ".config");
 289                                 return Path.Combine (configPath, "mconfig");
 290                         }
 291                 }
 292
 293                 static HandleCommand FindCommandHandler (string command)
 294                 {
 295                         foreach (CommandHandler ch in commands) {
 296                                 foreach (string name in ch.Names)
 297                                         if (name == command)
 298                                                 return ch.Handler;
 299                         }
 300
 301                         return null;
 302                 }
 303
 304                 static void DisplayList (string banner, string[] list)
 305                 {
 306                         Console.WriteLine (banner);
 307                         if (list == null || list.Length == 0) {
 308                                 Console.WriteLine ("No data found");
 309                                 return;
 310                         }
 311
 312                         foreach (string item in list)
 313                                 Console.WriteLine ("  {0}", item);
 314                 }
 315
 316                 static void PrintException (Exception ex, string format, params object[] parms)
 317                 {
 318                         if (ex == null)
 319                                 return;
 320                         Console.Error.WriteLine (format, parms);
 321                         Console.Error.WriteLine ("  {0}", ex.Message);
 322                         if (ex.InnerException != null)
 323                                 Console.Error.WriteLine ("    {0}", ex.InnerException.Message);
 324                 }
 325
 326                 static int Main (string[] args)
 327                 {
 328                         MConfigOptions options = new MConfigOptions ();
 329                         options.Parse (args);
 330
 331                         if (!String.IsNullOrEmpty (options.ConfigFile))
 332                                 configPaths [3] = options.ConfigFile;
 333
 334                         Configuration config = new Configuration ();
 335                         try {
 336                                 config.Load (configPaths);
 337                         } catch (Exception ex) {
 338                                 PrintException (ex, "Failed to load configuration files:");
 339                                 return 1;
 340                         }
 341
 342                         string[] commandArguments = options.PlainArguments;
 343                         if (commandArguments == null || commandArguments.Length == 0) {
 344                                 options.UsageCommands ();
 345                                 DisplayList ("Default config files:", config.DefaultConfigFiles);
 346                                 Console.WriteLine ();
 347                                 DisplayList ("Available features:", config.Features);
 348                                 return 1;
 349                         }
 350
 351                         HandleCommand commandHandler = FindCommandHandler (commandArguments [0]);
 352                         if (commandHandler == null) {
 353                                 Console.Error.WriteLine ("Unknown command '{0}'", commandArguments [0]);
 354                                 return 1;
 355                         }
 356
 357                         IDefaultConfigFileContainer[] containers = config.GetHandlersForInterface <IDefaultConfigFileContainer> ();
 358                         if (containers != null && containers.Length > 0)
 359                                 foreach (IDefaultConfigFileContainer c in containers)
 360                                         c.OverwriteFile += new OverwriteFileEventHandler (OnOverwriteFile);
 361
 362                         return commandHandler (options, config);
 363                 }
 364
 365                 static void OnOverwriteFile (object sender, OverwriteFileEventArgs e)
 366                 {
 367                         Console.Write ("Do you want to overwrite existing file '{0}'? [{1}] ",
 368                                        e.Name, e.Overwrite ? "Y/n" : "y/N");
 369                         ConsoleKeyInfo cki = Console.ReadKey (false);
 370                         switch (cki.Key) {
 371                                 case ConsoleKey.N:
 372                                         e.Overwrite = false;
 373                                         break;
 374
 375                                 case ConsoleKey.Y:
 376                                         e.Overwrite = true;
 377                                         break;
 378                         }
 379                         Console.WriteLine ();
 380                 }
 381
 382                 static int HandleAddFeature (MConfigOptions options, Configuration config)
 383                 {
 384                         string[] commandArguments = options.PlainArguments;
 385                         if (commandArguments.Length < 2) {
 386                                 Console.Error.WriteLine ("Command requires at least one argument.");
 387                                 return 1;
 388                         }
 389
 390                         FeatureTarget target = options.Target;
 391                         string featureName = commandArguments [1], configPath;
 392                         if (commandArguments.Length > 2)
 393                                 configPath = commandArguments [2];
 394                         else {
 395                                 switch (target) {
 396                                         case FeatureTarget.Any:
 397                                                 Console.Error.WriteLine ("No default config file for target 'Any'");
 398                                                 return 1;
 399
 400                                         case FeatureTarget.Web:
 401                                                 configPath = "Web.config";
 402                                                 break;
 403
 404                                         case FeatureTarget.Application:
 405                                                 configPath = "application.exe.config";
 406                                                 break;
 407
 408                                         default:
 409                                                 Console.Error.WriteLine ("Unknown target '{0}'", target);
 410                                                 return 1;
 411                                 }
 412                         }
 413
 414                         try {
 415                                 config.AddFeature (configPath, target, featureName);
 416                         } catch (Exception ex) {
 417                                 PrintException (ex, "Failed to add feature '{0}' to config file '{1}'.",
 418                                                 featureName, configPath);
 419                                 return 1;
 420                         }
 421
 422                         return 0;
 423                 }
 424
 425                 static int HandleDefaultConfig (MConfigOptions options, Configuration config)
 426                 {
 427                         FeatureTarget target = options.Target;
 428                         string[] commandArguments = options.PlainArguments;
 429                         string configName, targetPath;
 430
 431                         if (commandArguments.Length < 2) {
 432                                 switch (target) {
 433                                         case FeatureTarget.Any:
 434                                                 Console.Error.WriteLine ("No default config file for target 'Any'");
 435                                                 return 1;
 436
 437                                         case FeatureTarget.Web:
 438                                                 configName = "Web.config";
 439                                                 break;
 440
 441                                         case FeatureTarget.Application:
 442                                                 configName = "application.exe.config";
 443                                                 break;
 444
 445                                         default:
 446                                                 Console.Error.WriteLine ("Unknown target '{0}'", target);
 447                                                 return 1;
 448                                 }
 449                         } else
 450                                 configName = commandArguments [1];
 451
 452                         if (commandArguments.Length < 3)
 453                                 targetPath = ".";
 454                         else
 455                                 targetPath = commandArguments [2];
 456
 457                         try {
 458                                 config.WriteDefaultConfigFile (configName, targetPath, target);
 459                         } catch (Exception ex) {
 460                                 PrintException (ex, "Failed to write default config file '{0}':",
 461                                                 configName);
 462                                 return 1;
 463                         }
 464
 465                         return 0;
 466                 }
 467         }
 468 }