mcs/tools/gacutil/driver.cs

   1 //
   2 // Mono.Tools.GacUtil
   3 //
   4 // Author(s):
   5 //  Todd Berman <tberman@sevenl.net>
   6 //  Jackson Harper <jackson@ximian.com>
   7 //
   8 // Copyright 2003, 2004 Todd Berman
   9 // Copyright 2004 Novell, Inc (http://www.novell.com)
  10 //
  11
  12
  13 using System;
  14 using System.IO;
  15 using System.Text;
  16 using System.Reflection;
  17 using System.Collections;
  18 using System.Globalization;
  19 using System.Runtime.InteropServices;
  20
  21 using Mono.Security;
  22
  23 namespace Mono.Tools {
  24
  25         public class Driver {
  26
  27                 private enum Command {
  28                         Unknown,
  29                         Install,
  30                         InstallFromList,
  31                         Uninstall,
  32                         UninstallFromList,
  33                         UninstallSpecific,
  34                         List,
  35                         Help
  36                 }
  37
  38                 private static bool silent;
  39
  40                 public static int Main (string [] args)
  41                 {
  42                         if (args.Length == 0)
  43                                 Usage ();
  44
  45                         Command command = Command.Unknown;
  46                         string command_str = null;
  47
  48                         string libdir;
  49                         string name, package, gacdir, root;
  50                         name = package = root = gacdir = null;
  51                         bool check_refs = false;
  52
  53                         // Check for silent arg first so we can supress
  54                         // warnings during command line parsing
  55                         if (Array.IndexOf (args, "/silent") > -1 || Array.IndexOf (args, "-silent") > -1)
  56                                 silent = true;
  57
  58                         for (int i=0; i<args.Length; i++) {
  59                                 if (IsSwitch (args [i])) {
  60
  61                                         // for cmd line compatibility with other gacutils
  62                                         // we always force it though
  63                                         if (args [i] == "-f" || args [i] == "/f")
  64                                                 continue;
  65
  66                                         // Ignore this option for now, although we might implement it someday
  67                                         if (args [i] == "/r") {
  68                                                 WriteLine ("WARNING: gacutil does not support traced references." +
  69                                                         "This option is being ignored.");
  70                                                 i += 3;
  71                                                 continue;
  72                                         }
  73
  74                                         // This is already handled we just dont want to choke on it
  75                                         if (args [i] == "-silent" || args [i] == "/silent")
  76                                                 continue;
  77
  78                                         if (args [i] == "-check_refs" || args [i] == "/check_refs") {
  79                                                 check_refs = true;
  80                                                 continue;
  81                                         }
  82
  83                                         if (command == Command.Unknown) {
  84                                                 command = GetCommand (args [i]);
  85                                                 if (command != Command.Unknown) {
  86                                                         command_str = args [i];
  87                                                         continue;
  88                                                 }
  89                                         }
  90
  91                                         if (i + 1 >= args.Length) {
  92                                                 Console.WriteLine ("Option " + args [i] + " takes 1 argument");
  93                                                 return 1;
  94                                         }
  95
  96                                         switch (args [i]) {
  97                                         case "-package":
  98                                         case "/package":
  99                                                 package = args [++i];
 100                                                 break;
 101                                         case "-root":
 102                                         case "/root":
 103                                                 root = args [++i];
 104                                                 break;
 105                                         case "-gacdir":
 106                                         case "/gacdir":
 107                                                 gacdir = args [++i];
 108                                                 break;
 109                                         }
 110                                         continue;
 111                                 }
 112                                 if (name == null)
 113                                         name = args [i];
 114                                 else
 115                                         name += args [i];
 116                         }
 117
 118                         if (command == Command.Unknown && IsSwitch (args [0])) {
 119                                 Console.WriteLine ("Unknown command: " + args [0]);
 120                                 return 1;
 121                         } else if (command == Command.Unknown) {
 122                                 Usage ();
 123                         } else if (command == Command.Help) {
 124                                 ShowHelp (true);
 125                                 return 1;
 126                         }
 127
 128                         if (gacdir == null) {
 129                                 gacdir = GetGacDir ();
 130                                 libdir = GetLibDir ();
 131                         } else {
 132                                 gacdir = EnsureLib (gacdir);
 133                                 libdir = Path.Combine (gacdir, "mono");
 134                                 gacdir = Path.Combine (libdir, "gac");
 135                         }
 136
 137                         string link_gacdir = gacdir;
 138                         string link_libdir = libdir;
 139                         if (root != null) {
 140                                 libdir = Path.Combine (root, "mono");
 141                                 gacdir = Path.Combine (libdir, "gac");
 142                         }
 143
 144                         switch (command) {
 145                         case Command.Install:
 146                                 if (name == null) {
 147                                         WriteLine ("Option " + command_str + " takes 1 argument");
 148                                         return 1;
 149                                 }
 150                                 if (!Install (check_refs, name, package, gacdir, link_gacdir, libdir, link_libdir))
 151                                         return 1;
 152                                 break;
 153                         case Command.InstallFromList:
 154                                 if (name == null) {
 155                                         WriteLine ("Option " + command_str + " takes 1 argument");
 156                                         return 1;
 157                                 }
 158                                 if (!InstallFromList (check_refs, name, package, gacdir, link_gacdir, libdir, link_libdir))
 159                                         return 1;
 160                                 break;
 161                         case Command.Uninstall:
 162                                 if (name == null) {
 163                                         WriteLine ("Option " + command_str + " takes 1 argument");
 164                                         return 1;
 165                                 }
 166                                 if (!Uninstall (name, package, gacdir, libdir))
 167                                         Environment.Exit (1);
 168                                 break;
 169                         case Command.UninstallFromList:
 170                                 if (name == null) {
 171                                         WriteLine ("Option " + command_str + " takes 1 argument");
 172                                         return 1;
 173                                 }
 174                                 if (!UninstallFromList (name, package, gacdir, libdir))
 175                                         return 1;
 176                                 break;
 177                         case Command.UninstallSpecific:
 178                                 if (name == null) {
 179                                         WriteLine ("Opetion " + command_str + " takes 1 argument");
 180                                         return 1;
 181                                 }
 182                                 if (!UninstallSpecific (name, package, gacdir, libdir))
 183                                         return 1;
 184                                 break;
 185                         case Command.List:
 186                                 List (name, gacdir);
 187                                 break;
 188                         }
 189
 190                         return 0;
 191                 }
 192
 193                 private static bool Install (bool check_refs, string name, string package,
 194                                 string gacdir, string link_gacdir, string libdir, string link_libdir)
 195                 {
 196                         string failure_msg = "Failure adding assembly to the cache: ";
 197
 198                         if (!File.Exists (name)) {
 199                                 WriteLine (failure_msg + "The system cannot find the file specified.");
 200                                 Environment.Exit (1);
 201                         }
 202
 203                         AssemblyName an = null;
 204                         byte [] pub_tok;
 205
 206                         try {
 207                                 an = AssemblyName.GetAssemblyName (name);
 208                         } catch {
 209                                 WriteLine (failure_msg + "The file specified is not a valid assembly.");
 210                                 return false;
 211                         }
 212
 213                         pub_tok = an.GetPublicKeyToken ();
 214                         if (pub_tok == null || pub_tok.Length == 0) {
 215                                 WriteLine (failure_msg + "Attempt to install an assembly without a strong name.");
 216                                 return false;
 217                         }
 218
 219                         if (check_refs && !CheckReferencedAssemblies (an)) {
 220                                 WriteLine (failure_msg + "Attempt to install an assembly that references non " +
 221                                                 "strong named assemblies with -check_refs enabled.");
 222                                 return false;
 223                         }
 224
 225                         string [] siblings = { ".config", ".mdb" };
 226                         string version_token = an.Version + "_" +
 227                                                an.CultureInfo.Name.ToLower (CultureInfo.InvariantCulture) + "_" +
 228                                                GetStringToken (pub_tok);
 229                         string full_path = Path.Combine (Path.Combine (gacdir, an.Name), version_token);
 230                         string asmb_file = Path.GetFileName (name);
 231                         string asmb_path = Path.Combine (full_path, asmb_file);
 232
 233                         try {
 234                                 if (Directory.Exists (full_path)) {
 235                                         // Wipe out the directory. This way we ensure old assemblies
 236                                         // config files, and AOTd files are removed.
 237                                         Directory.Delete (full_path, true);
 238                                 }
 239                                 Directory.CreateDirectory (full_path);
 240                         } catch {
 241                                 WriteLine (failure_msg + "gac directories could not be created, " +
 242                                                 "possibly permission issues.");
 243                                 return false;
 244                         }
 245
 246                         File.Copy (name, asmb_path, true);
 247
 248                         foreach (string ext in siblings) {
 249                                 string sibling = String.Concat (name, ext);
 250                                 if (File.Exists (sibling))
 251                                         File.Copy (sibling, String.Concat (asmb_path, ext), true);
 252                         }
 253
 254                         if (package != null) {
 255                                 string ref_dir = Path.Combine (libdir, package);
 256                                 string ref_path = Path.Combine (ref_dir, asmb_file);
 257
 258                                 if (File.Exists (ref_path))
 259                                         File.Delete (ref_path);
 260                                 try {
 261                                         Directory.CreateDirectory (ref_dir);
 262                                 } catch {
 263                                         WriteLine ("ERROR: Could not create package dir file.");
 264                                         Environment.Exit (1);
 265                                 }
 266                                 if (Path.DirectorySeparatorChar == '/') {
 267                                         string pkg_path = "../gac/" + an.Name + "/" + version_token + "/" + asmb_file;
 268                                         symlink (pkg_path, ref_path);
 269                                         WriteLine ("Package exported to: {0} -> {1}", ref_path, pkg_path);
 270                                 } else {
 271                                         // string link_path = Path.Combine (Path.Combine (link_gacdir, an.Name), version_token);
 272                                         //
 273                                         // We can't use 'link_path' here, since it need not be a valid path at the time 'gacutil'
 274                                         // is run, esp. when invoked in a DESTDIR install.
 275                                         File.Copy (name, ref_path);
 276                                         WriteLine ("Package exported to: " + ref_path);
 277                                 }
 278                         }
 279
 280                         WriteLine ("{0} installed into the gac ({1})", an.Name, gacdir);
 281                         return true;
 282                 }
 283
 284                 private static bool Uninstall (string name, string package, string gacdir, string libdir)
 285                 {
 286                         string [] assembly_pieces = name.Split (new char[] { ',' });
 287                         Hashtable asm_info = new Hashtable ();
 288
 289                         foreach (string item in assembly_pieces) {
 290                                 string[] pieces = item.Trim ().Split (new char[] { '=' }, 2);
 291                                 if(pieces.Length == 1)
 292                                         asm_info ["assembly"] = pieces [0];
 293                                 else
 294                                         asm_info [pieces[0].Trim ().ToLower (CultureInfo.InvariantCulture)] = pieces [1];
 295                         }
 296
 297                         string asmdir = Path.Combine (gacdir, (string) asm_info ["assembly"]);
 298                         if (!Directory.Exists (asmdir)) {
 299                                 WriteLine ("No assemblies found that match: " + name);
 300                                 return false;
 301                         }
 302
 303                         string searchString = GetSearchString (asm_info);
 304                         string [] directories = Directory.GetDirectories (asmdir, searchString);
 305
 306                         foreach (string dir in directories) {
 307                                 Directory.Delete (dir, true);
 308                                 if (package != null) {
 309                                         string link_dir = Path.Combine (libdir, package);
 310                                         string link = Path.Combine (link_dir, (string) asm_info ["assembly"] + ".dll");
 311                                         File.Delete (link);
 312                                         if (Directory.GetFiles (link_dir).Length == 0) {
 313                                                 WriteLine ("Cleaning package directory, it is empty.");
 314                                                 Directory.Delete (link_dir);
 315                                         }
 316                                 }
 317                                 WriteLine ("Assembly removed from the gac.");
 318                         }
 319
 320                         if(Directory.GetDirectories (asmdir).Length == 0) {
 321                                 WriteLine ("Cleaning assembly dir, its empty");
 322                                 Directory.Delete (asmdir);
 323                         }
 324
 325                         return true;
 326                 }
 327
 328                 private static bool UninstallSpecific (string name, string package,
 329                                 string gacdir, string libdir)
 330                 {
 331                         string failure_msg = "Failure to remove assembly from the cache: ";
 332
 333                         if (!File.Exists (name)) {
 334                                 WriteLine (failure_msg + "The system cannot find the file specified.");
 335                                 return false;
 336                         }
 337
 338                         AssemblyName an = null;
 339
 340                         try {
 341                                 an = AssemblyName.GetAssemblyName (name);
 342                         } catch {
 343                                 WriteLine (failure_msg + "The file specified is not a valid assembly.");
 344                                 return false;
 345                         }
 346
 347                         return Uninstall (an.FullName.Replace (" ", String.Empty),
 348                                         package, gacdir, libdir);
 349                 }
 350
 351                 private static void List (string name, string gacdir)
 352                 {
 353                         WriteLine ("The following assemblies are installed into the GAC:");
 354
 355                         if (name != null) {
 356                                 FilteredList (name, gacdir);
 357                                 return;
 358                         }
 359
 360                         int count = 0;
 361                         DirectoryInfo gacinfo = new DirectoryInfo (gacdir);
 362                         foreach (DirectoryInfo parent in gacinfo.GetDirectories ()) {
 363                                 foreach (DirectoryInfo dir in parent.GetDirectories ()) {
 364                                         string asmb = Path.Combine (Path.Combine (parent.FullName, dir.Name), parent.Name) + ".dll";
 365                                         if (File.Exists (asmb)) {
 366                                                 WriteLine (AsmbNameFromVersionString (parent.Name, dir.Name));
 367                                                 count++;
 368                                         }
 369                                 }
 370                         }
 371                         WriteLine ("Number of items = " + count);
 372                 }
 373
 374                 private static void FilteredList (string name, string gacdir)
 375                 {
 376                         string [] assembly_pieces = name.Split (new char[] { ',' });
 377                         Hashtable asm_info = new Hashtable ();
 378
 379                         foreach (string item in assembly_pieces) {
 380                                 string[] pieces = item.Trim ().Split (new char[] { '=' }, 2);
 381                                 if(pieces.Length == 1)
 382                                         asm_info ["assembly"] = pieces [0];
 383                                 else
 384                                         asm_info [pieces[0].Trim ().ToLower (CultureInfo.InvariantCulture)] = pieces [1];
 385                         }
 386
 387                         string asmdir = Path.Combine (gacdir, (string) asm_info ["assembly"]);
 388                         if (!Directory.Exists (asmdir)) {
 389                                 WriteLine ("Number of items = 0");
 390                                 return;
 391                         }
 392                         string search = GetSearchString (asm_info);
 393                         string [] dir_list = Directory.GetDirectories (asmdir, search);
 394
 395                         int count = 0;
 396                         foreach (string dir in dir_list) {
 397                                 string asmb = Path.Combine (dir, (string) asm_info ["assembly"]) + ".dll";
 398                                 if (File.Exists (asmb)) {
 399                                         WriteLine (AsmbNameFromVersionString ((string) asm_info ["assembly"],
 400                                                                    new DirectoryInfo (dir).Name));
 401                                         count++;
 402                                 }
 403                         }
 404                         WriteLine ("Number of items = " + count);
 405                 }
 406
 407                 private static bool InstallFromList (bool check_refs, string list_file, string package,
 408                                 string gacdir, string link_gacdir, string libdir, string link_libdir)
 409                 {
 410                         StreamReader s = null;
 411                         int processed, failed;
 412
 413                         processed = failed = 0;
 414
 415                         try {
 416                                 s = new StreamReader (list_file);
 417
 418                                 string line;
 419                                 while ((line = s.ReadLine ()) != null) {
 420                                         if (!Install (check_refs, line, package, gacdir, link_gacdir,
 421                                                             libdir, link_libdir))
 422                                                 failed++;
 423                                         processed++;
 424
 425                                 }
 426                         } catch (IOException ioe) {
 427                                 WriteLine ("Failed to open assemblies list file " + list_file + ".");
 428                                 return false;
 429                         } finally {
 430                                 if (s != null)
 431                                         s.Close ();
 432                         }
 433
 434                         return true;
 435                 }
 436
 437                 private static bool UninstallFromList (string list_file, string package,
 438                                 string gacdir, string libdir)
 439                 {
 440                         StreamReader s = null;
 441                         int processed, failed;
 442
 443                         processed = failed = 0;
 444
 445                         try {
 446                                 s = new StreamReader (list_file);
 447
 448                                 string line;
 449                                 while ((line = s.ReadLine ()) != null) {
 450                                         if (!Uninstall (line, package, gacdir, libdir))
 451                                                 failed++;
 452                                         processed++;
 453                                 }
 454                         } catch (IOException ioe) {
 455                                 WriteLine ("Failed to open assemblies list file " + list_file + ".");
 456                                 return false;
 457                         } finally {
 458                                 if (s != null)
 459                                         s.Close ();
 460                         }
 461
 462                         return true;
 463                 }
 464
 465                 private static bool CheckReferencedAssemblies (AssemblyName an)
 466                 {
 467                         AppDomain d = null;
 468                         try {
 469                                 Assembly a = Assembly.LoadFrom (an.CodeBase);
 470                                 AssemblyName corlib = typeof (object).Assembly.GetName ();
 471
 472                                 foreach (AssemblyName ref_an in a.GetReferencedAssemblies ()) {
 473                                         if (ref_an.Name == corlib.Name) // Just do a string compare so we can install on diff versions
 474                                                 continue;
 475                                         byte [] pt = ref_an.GetPublicKeyToken ();
 476                                         if (pt == null || pt.Length == 0) {
 477                                                 WriteLine ("Assembly " + ref_an.Name + " is not strong named.");
 478                                                 return false;
 479                                         }
 480                                 }
 481                         } catch  (Exception e) {
 482                                 WriteLine (e.ToString ()); // This should be removed pre beta3
 483                                 return false;
 484                         } finally {
 485                                 if (d != null) {
 486                                         try {
 487                                                 AppDomain.Unload (d);
 488                                         } catch { }
 489                                 }
 490                         }
 491
 492                         return true;
 493                 }
 494
 495                 private static string GetSearchString (Hashtable asm_info)
 496                 {
 497                         if (asm_info.Keys.Count == 1)
 498                                 return "*";
 499                         string version, culture, token;
 500
 501                         version = asm_info ["version"] as string;
 502                         version = (version == null ? "*" : version);
 503                         culture = asm_info ["culture"] as string;
 504                         culture = (culture == null ? "*" : culture.ToLower (CultureInfo.InvariantCulture));
 505                         token = asm_info ["publickeytoken"] as string;
 506                         token = (token == null ? "*" : token.ToLower (CultureInfo.InvariantCulture));
 507
 508                         return String.Format ("{0}_{1}_{2}", version, culture, token);
 509                 }
 510
 511                 private static string AsmbNameFromVersionString (string name, string str)
 512                 {
 513                         string [] pieces = str.Split ('_');
 514                         return String.Format ("{0}, Version={1}, Culture={2}, PublicKeyToken={3}",
 515                                         name, pieces [0], (pieces [1] == String.Empty ? "neutral" : pieces [1]),
 516                                         pieces [2]);
 517                 }
 518
 519                 private static bool IsSwitch (string arg)
 520                 {
 521                         return (arg [0] == '-' || arg [0] == '/');
 522                 }
 523
 524                 private static Command GetCommand (string arg)
 525                 {
 526                         Command c = Command.Unknown;
 527
 528                         switch (arg) {
 529                         case "-i":
 530                         case "/i":
 531                         case "--install":
 532                                 c = Command.Install;
 533                                 break;
 534                         case "-il":
 535                         case "/il":
 536                         case "--install-from-list":
 537                                 c = Command.InstallFromList;
 538                                 break;
 539                         case "-u":
 540                         case "/u":
 541                         case "/uf":
 542                         case "--uninstall":
 543                                 c = Command.Uninstall;
 544                                 break;
 545                         case "-ul":
 546                         case "/ul":
 547                         case "--uninstall-from-list":
 548                                 c = Command.UninstallFromList;
 549                                 break;
 550                         case "-us":
 551                         case "/us":
 552                         case "--uninstall-specific":
 553                                 c = Command.UninstallSpecific;
 554                                 break;
 555                         case "-l":
 556                         case "/l":
 557                         case "--list":
 558                                 c = Command.List;
 559                                 break;
 560                         case "-?":
 561                         case "/?":
 562                         case "--help":
 563                                 c = Command.Help;
 564                                 break;
 565                         }
 566                         return c;
 567                 }
 568
 569                 [DllImport ("libc", SetLastError=true)]
 570                 public static extern int symlink (string oldpath, string newpath);
 571
 572                 private static string GetGacDir () {
 573                         PropertyInfo gac = typeof (System.Environment).GetProperty ("GacPath",
 574                                         BindingFlags.Static|BindingFlags.NonPublic);
 575                         if (gac == null) {
 576                                 WriteLine ("ERROR: Mono runtime not detected, please use " +
 577                                                 "the mono runtime for gacutil.exe");
 578                                 Environment.Exit (1);
 579                         }
 580                         MethodInfo get_gac = gac.GetGetMethod (true);
 581                         return (string) get_gac.Invoke (null, null);
 582                 }
 583
 584                 private static string GetLibDir () {
 585                         MethodInfo libdir = typeof (System.Environment).GetMethod ("internalGetGacPath",
 586                                         BindingFlags.Static|BindingFlags.NonPublic);
 587                         if (libdir == null) {
 588                                 WriteLine ("ERROR: Mono runtime not detected, please use " +
 589                                                 "the mono runtime for gacutil.exe");
 590                                 Environment.Exit (1);
 591                         }
 592                         return Path.Combine ((string)libdir.Invoke (null, null), "mono");
 593                 }
 594
 595                 private static string GetStringToken (byte[] tok)
 596                 {
 597                         StringBuilder sb = new StringBuilder ();
 598                         for (int i = 0; i < tok.Length ; i++)
 599                                 sb.Append (tok[i].ToString ("x2"));
 600                         return sb.ToString ();
 601                 }
 602
 603                 private static string CombinePaths (string a, string b)
 604                 {
 605                         string dsc = Path.DirectorySeparatorChar.ToString ();
 606                         string sep = (a.EndsWith (dsc) ? String.Empty : dsc);
 607                         string end = (b.StartsWith (dsc) ? b.Substring (1) : b);
 608                         return String.Concat (a, sep, end);
 609                 }
 610
 611                 private static string EnsureLib (string dir)
 612                 {
 613                         DirectoryInfo d = new DirectoryInfo (dir);
 614                         if (d.Name == "lib")
 615                                 return dir;
 616                         return Path.Combine (dir, "lib");
 617                 }
 618
 619                 private static void WriteLine ()
 620                 {
 621                         if (silent)
 622                                 return;
 623                         Console.WriteLine ();
 624                 }
 625
 626                 private static void WriteLine (string line)
 627                 {
 628                         if (silent)
 629                                 return;
 630                         Console.WriteLine (line);
 631                 }
 632
 633                 private static void WriteLine (string line, params object [] p)
 634                 {
 635                         if (silent)
 636                                 return;
 637                         Console.WriteLine (line, p);
 638                 }
 639
 640                 private static void Usage ()
 641                 {
 642                         ShowHelp (false);
 643                         Environment.Exit (1);
 644                 }
 645
 646                 private static void ShowHelp (bool detailed)
 647                 {
 648                         WriteLine ("Usage: gacutil.exe <commands> [ <options> ]");
 649                         WriteLine ("Commands:");
 650
 651                         WriteLine ("-i <assembly_path> [-check_refs] [-package NAME] [-root ROOTDIR] [-gacdir GACDIR]");
 652                         WriteLine ("\tInstalls an assembly into the global assembly cache.");
 653                         if (detailed) {
 654                                 WriteLine ("\t<assembly_path> is the name of the file that contains the " +
 655                                                 "\tassembly manifest\n" +
 656                                                 "\tExample: -i myDll.dll");
 657                         }
 658                         WriteLine ();
 659
 660                         WriteLine ("-il <assembly_list_file> [-check_refs] [-package NAME] [-root ROOTDIR] [-gacdir GACDIR]");
 661                         WriteLine ("\tInstalls one or more assemblies into the global assembly cache.");
 662                         if (detailed) {
 663                                 WriteLine ("\t<assembly_list_file> is the path to a test file containing a list of\n" +
 664                                                 "\tassembly file paths on separate lines.\n" +
 665                                                 "\tExample -il assembly_list.txt\n" +
 666                                                 "\t\tassembly_list.txt contents:\n" +
 667                                                 "\t\tassembly1.dll\n" +
 668                                                 "\t\tassembly2.dll");
 669                         }
 670                         WriteLine ();
 671
 672                         WriteLine ("-u <assembly_display_name> [-package NAME] [-root ROOTDIR] [-gacdir GACDIR]");
 673                         WriteLine ("\tUninstalls an assembly from the global assembly cache.");
 674                         if (detailed) {
 675                                 WriteLine ("\t<assembly_display_name> is the name of the assembly (partial or\n" +
 676                                                 "\tfully qualified) to remove from the global assembly cache. If a \n" +
 677                                                 "\tpartial name is specified all matching assemblies will be uninstalled.\n" +
 678                                                 "\tExample: -u myDll,Version=1.2.1.0");
 679                         }
 680                         WriteLine ();
 681
 682                         WriteLine ("-ul <assembly_list_file> [-package NAME] [-root ROOTDIR] [-gacdir GACDIR]");
 683                         WriteLine ("\tUninstalls one or more assemblies from the global assembly cache.");
 684                         if (detailed) {
 685                                 WriteLine ("\t<assembly_list_file> is the path to a test file containing a list of\n" +
 686                                                 "\tassembly names on separate lines.\n" +
 687                                                 "\tExample -ul assembly_list.txt\n" +
 688                                                 "\t\tassembly_list.txt contents:\n" +
 689                                                 "\t\tassembly1,Version=1.0.0.0,Culture=en,PublicKeyToken=0123456789abcdef\n" +
 690                                                 "\t\tassembly2,Version=2.0.0.0,Culture=en,PublicKeyToken=0123456789abcdef");
 691                         }
 692                         WriteLine ();
 693
 694                         WriteLine ("-us <assembly_path> [-package NAME] [-root ROOTDIR] [-gacdir GACDIR]");
 695                         WriteLine ("\tUninstalls an assembly using the specifed assemblies full name.");
 696                         if (detailed) {
 697                                 WriteLine ("\t<assembly path> is the path to an assembly. The full assembly name\n" +
 698                                                 "\tis retrieved from the specified assembly if there is an assembly in\n" +
 699                                                 "\tthe GAC with a matching name, it is removed.\n" +
 700                                                 "\tExample: -us myDll.dll");
 701                         }
 702                         WriteLine ();
 703
 704                         WriteLine ("-l [assembly_name] [-root ROOTDIR] [-gacdir GACDIR]");
 705                         WriteLine ("\tLists the contents of the global assembly cache.");
 706                         if (detailed) {
 707                                 WriteLine ("\tWhen the <assembly_name> parameter is specified only matching\n" +
 708                                                 "\tassemblies are listed.");
 709                         }
 710                         WriteLine ();
 711
 712                         WriteLine ("-?");
 713                         WriteLine ("\tDisplays a detailed help screen");
 714                         WriteLine ();
 715
 716                         if (!detailed)
 717                                 return;
 718
 719                         WriteLine ("Options:");
 720                         WriteLine ("-package <NAME>");
 721                         WriteLine ("\tUsed to create a directory in prefix/lib/mono with the name NAME, and a\n" +
 722                                         "\tsymlink is created from NAME/assembly_name to the assembly on the GAC.\n" +
 723                                         "\tThis is used so developers can reference a set of libraries at once.");
 724                         WriteLine ();
 725
 726                         WriteLine ("-gacdir <GACDIR>");
 727                         WriteLine ("\tUsed to specify the GACs base directory. Once an assembly has been installed\n" +
 728                                         "\tto a non standard gacdir the MONO_GAC_PREFIX environment variable must be used\n" +
 729                                         "\tto access the assembly.");
 730                         WriteLine ();
 731
 732                         WriteLine ("-root <ROOTDIR>");
 733                         WriteLine ("\tUsed by developers integrating this with automake tools or packaging tools\n" +
 734                                         "\tthat require a prefix directory to  be specified. The root represents the\n" +
 735                                         "\t\"libdir\" component of a prefix (typically prefix/lib).");
 736                         WriteLine ();
 737
 738                         WriteLine ("-check_refs");
 739                         WriteLine ("\tUsed to ensure that the assembly being installed into the GAC does not\n" +
 740                                         "\treference any non strong named assemblies. Assemblies being installed to\n" +
 741                                         "\tthe GAC should not reference non strong named assemblies, however the is\n" +
 742                                         "\tan optional check.");
 743
 744                         WriteLine ();
 745                         WriteLine ("Ignored Options:");
 746                         WriteLine ("-f");
 747                         WriteLine ("\tThe Mono gacutil ignores the -f option to maintian commandline compatibility with");
 748                         WriteLine ("\tother gacutils. gacutil will always force the installation of a new assembly.");
 749
 750                         WriteLine ();
 751                         WriteLine ("-r <reference_scheme> <reference_id> <description>");
 752                         WriteLine ("\tThe Mono gacutil has not implemented traced references and will emit a warning");
 753                         WriteLine ("\twhen this option is used.");
 754                 }
 755         }
 756 }
 757