mcs/tools/gacutil/driver.cs

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