mcs/class/Microsoft.Build.Tasks/Microsoft.Build.Tasks/ResolveAssemblyReference.cs

   1 //
   2 // ResolveAssemblyReference.cs: Searches for assembly files.
   3 //
   4 // Author:
   5 //   Marek Sieradzki (marek.sieradzki@gmail.com)
   6 //   Ankit Jain (jankit@novell.com)
   7 //
   8 // (C) 2006 Marek Sieradzki
   9 // Copyright 2009 Novell, Inc (http://www.novell.com)
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29
  30 using System;
  31 using System.Collections.Generic;
  32 using System.Globalization;
  33 using System.IO;
  34 using System.Linq;
  35 using System.Reflection;
  36 using System.Security;
  37 using Microsoft.Build.Framework;
  38 using Microsoft.Build.Utilities;
  39
  40 namespace Microsoft.Build.Tasks {
  41         public class ResolveAssemblyReference : TaskExtension {
  42
  43                 bool            autoUnify;
  44                 ITaskItem[]     assemblyFiles;
  45                 ITaskItem[]     assemblies;
  46                 string          appConfigFile;
  47                 string[]        allowedAssemblyExtensions;
  48                 string[]        allowedRelatedFileExtensions;
  49                 string[]        candidateAssemblyFiles;
  50                 ITaskItem[]     copyLocalFiles;
  51                 ITaskItem[]     filesWritten;
  52                 bool            findDependencies;
  53                 bool            findRelatedFiles;
  54                 bool            findSatellites;
  55                 bool            findSerializationAssemblies;
  56                 ITaskItem[]     relatedFiles;
  57                 ITaskItem[]     resolvedDependencyFiles;
  58                 ITaskItem[]     resolvedFiles;
  59                 ITaskItem[]     satelliteFiles;
  60                 ITaskItem[]     scatterFiles;
  61                 string[]        searchPaths;
  62                 ITaskItem[]     serializationAssemblyFiles;
  63                 bool            silent;
  64                 string          stateFile;
  65                 ITaskItem[]     suggestedRedirects;
  66                 string[]        targetFrameworkDirectories;
  67                 string          targetProcessorArchitecture;
  68                 static string []        default_assembly_extensions;
  69
  70                 AssemblyResolver        assembly_resolver;
  71                 List<string> dependency_search_paths;
  72                 Dictionary<string, ResolvedReference> assemblyNameToResolvedRef;
  73                 Dictionary<string, ITaskItem>   tempSatelliteFiles, tempRelatedFiles,
  74                         tempResolvedDepFiles, tempCopyLocalFiles;
  75                 List<ITaskItem> tempResolvedFiles;
  76                 List<PrimaryReference> primaryReferences;
  77                 Dictionary<string, string> alreadyScannedAssemblyNames;
  78                 Dictionary<string, string> conflictWarningsCache;
  79
  80                 //FIXME: construct and use a graph of the dependencies, useful across projects
  81
  82                 static ResolveAssemblyReference ()
  83                 {
  84                         default_assembly_extensions = new string [] { ".dll", ".exe" };
  85                 }
  86
  87                 public ResolveAssemblyReference ()
  88                 {
  89                         assembly_resolver = new AssemblyResolver ();
  90                 }
  91
  92                 //FIXME: make this reusable
  93                 public override bool Execute ()
  94                 {
  95                         if (assemblies == null && assemblyFiles == null)
  96                                 // nothing to resolve
  97                                 return true;
  98
  99                         LogTaskParameters ();
 100
 101                         assembly_resolver.Log = Log;
 102                         tempResolvedFiles = new List<ITaskItem> ();
 103                         tempCopyLocalFiles = new Dictionary<string, ITaskItem> ();
 104                         tempSatelliteFiles = new Dictionary<string, ITaskItem> ();
 105                         tempRelatedFiles = new Dictionary<string, ITaskItem> ();
 106                         tempResolvedDepFiles = new Dictionary<string, ITaskItem> ();
 107
 108                         primaryReferences = new List<PrimaryReference> ();
 109                         assemblyNameToResolvedRef = new Dictionary<string, ResolvedReference> ();
 110                         conflictWarningsCache = new Dictionary<string, string> ();
 111
 112                         ResolveAssemblies ();
 113                         ResolveAssemblyFiles ();
 114                         resolvedFiles = tempResolvedFiles.ToArray ();
 115
 116                         alreadyScannedAssemblyNames = new Dictionary<string, string> ();
 117
 118                         // the first element is place holder for parent assembly's dir
 119                         dependency_search_paths = new List<string> () { String.Empty };
 120                         dependency_search_paths.AddRange (searchPaths);
 121
 122                         // resolve dependencies
 123                         foreach (PrimaryReference pref in primaryReferences)
 124                                 ResolveAssemblyFileDependencies (pref.TaskItem, pref.ParentCopyLocal);
 125
 126                         copyLocalFiles = tempCopyLocalFiles.Values.ToArray ();
 127                         satelliteFiles = tempSatelliteFiles.Values.ToArray ();
 128                         relatedFiles = tempRelatedFiles.Values.ToArray ();
 129                         resolvedDependencyFiles = tempResolvedDepFiles.Values.ToArray ();
 130
 131                         tempResolvedFiles.Clear ();
 132                         tempCopyLocalFiles.Clear ();
 133                         tempSatelliteFiles.Clear ();
 134                         tempRelatedFiles.Clear ();
 135                         tempResolvedDepFiles.Clear ();
 136                         alreadyScannedAssemblyNames.Clear ();
 137                         primaryReferences.Clear ();
 138                         assemblyNameToResolvedRef.Clear ();
 139                         conflictWarningsCache.Clear ();
 140                         dependency_search_paths = null;
 141
 142                         return true;
 143                 }
 144
 145                 void ResolveAssemblies ()
 146                 {
 147                         if (assemblies == null || assemblies.Length == 0)
 148                                 return;
 149
 150                         foreach (ITaskItem item in assemblies) {
 151                                 if (!String.IsNullOrEmpty (item.GetMetadata ("SubType"))) {
 152                                         Log.LogWarning ("Reference '{0}' has non-empty SubType. Ignoring.", item.ItemSpec);
 153                                         continue;
 154                                 }
 155
 156                                 LogWithPrecedingNewLine (MessageImportance.Low, "Primary Reference {0}", item.ItemSpec);
 157                                 ResolvedReference resolved_ref = ResolveReference (item, searchPaths, true);
 158                                 if (resolved_ref == null)
 159                                         resolved_ref = ResolveWithAlternateName (item, allowedAssemblyExtensions ?? default_assembly_extensions);
 160
 161                                 if (resolved_ref == null) {
 162                                         Log.LogWarning ("Reference '{0}' not resolved", item.ItemSpec);
 163                                         assembly_resolver.LogSearchLoggerMessages (MessageImportance.Normal);
 164                                 } else {
 165                                         Log.LogMessage (MessageImportance.Low,
 166                                                         "\tReference {0} resolved to {1}. CopyLocal = {2}",
 167                                                         item.ItemSpec, resolved_ref.TaskItem,
 168                                                         resolved_ref.TaskItem.GetMetadata ("CopyLocal"));
 169
 170                                         Log.LogMessage (MessageImportance.Low,
 171                                                         "\tReference found at search path {0}",
 172                                                         resolved_ref.FoundInSearchPathAsString);
 173
 174                                         assembly_resolver.LogSearchLoggerMessages (MessageImportance.Low);
 175
 176                                         if (TryAddNewReference (tempResolvedFiles, resolved_ref) &&
 177                                                 !IsFromGacOrTargetFramework (resolved_ref) &&
 178                                                 resolved_ref.FoundInSearchPath != SearchPath.PkgConfig) {
 179                                                 primaryReferences.Add (new PrimaryReference (
 180                                                                 resolved_ref.TaskItem,
 181                                                                 resolved_ref.TaskItem.GetMetadata ("CopyLocal")));
 182                                         }
 183                                 }
 184                         }
 185                 }
 186
 187
 188                 ResolvedReference ResolveWithAlternateName (ITaskItem item, string[] extensions)
 189                 {
 190                         foreach (string extn in extensions) {
 191                                 if (item.ItemSpec.EndsWith (extn)) {
 192                                         ITaskItem altitem = new TaskItem (item.ItemSpec.Substring (0, item.ItemSpec.Length - extn.Length));
 193                                         item.CopyMetadataTo (altitem);
 194                                         return ResolveReference (altitem, searchPaths, true);
 195                                 }
 196                         }
 197                         return null;
 198                 }
 199
 200                 // Use @search_paths to resolve the reference
 201                 ResolvedReference ResolveReference (ITaskItem item, IEnumerable<string> search_paths, bool set_copy_local)
 202                 {
 203                         ResolvedReference resolved = null;
 204                         bool specific_version;
 205
 206                         assembly_resolver.ResetSearchLogger ();
 207
 208                         if (!TryGetSpecificVersionValue (item, out specific_version))
 209                                 return null;
 210
 211                         foreach (string spath in search_paths) {
 212                                 assembly_resolver.LogSearchMessage ("For searchpath {0}", spath);
 213
 214                                 if (String.Compare (spath, "{HintPathFromItem}") == 0) {
 215                                         resolved = assembly_resolver.ResolveHintPathReference (item, specific_version);
 216                                 } else if (String.Compare (spath, "{TargetFrameworkDirectory}") == 0) {
 217                                         if (targetFrameworkDirectories == null)
 218                                                 continue;
 219                                         foreach (string fpath in targetFrameworkDirectories) {
 220                                                 resolved = assembly_resolver.FindInTargetFramework (item,
 221                                                                 fpath, specific_version);
 222                                                 if (resolved != null)
 223                                                         break;
 224                                         }
 225                                 } else if (String.Compare (spath, "{GAC}") == 0) {
 226                                         resolved = assembly_resolver.ResolveGacReference (item, specific_version);
 227                                 } else if (String.Compare (spath, "{RawFileName}") == 0) {
 228                                         //FIXME: identify assembly names, as extract the name, and try with that?
 229                                         AssemblyName aname;
 230                                         if (assembly_resolver.TryGetAssemblyNameFromFile (item.ItemSpec, out aname))
 231                                                 resolved = assembly_resolver.GetResolvedReference (item, item.ItemSpec, aname, true,
 232                                                                 SearchPath.RawFileName);
 233                                 } else if (String.Compare (spath, "{CandidateAssemblyFiles}") == 0) {
 234                                         assembly_resolver.LogSearchMessage (
 235                                                         "Warning: {{CandidateAssemblyFiles}} not supported currently");
 236                                 } else if (String.Compare (spath, "{PkgConfig}") == 0) {
 237                                         resolved = assembly_resolver.ResolvePkgConfigReference (item, specific_version);
 238                                 } else {
 239                                         resolved = assembly_resolver.FindInDirectory (
 240                                                         item, spath,
 241                                                         allowedAssemblyExtensions ?? default_assembly_extensions,
 242                                                         specific_version);
 243                                 }
 244
 245                                 if (resolved != null)
 246                                         break;
 247                         }
 248
 249                         if (resolved != null && set_copy_local)
 250                                 SetCopyLocal (resolved.TaskItem, resolved.CopyLocal.ToString ());
 251
 252                         return resolved;
 253                 }
 254
 255                 bool TryGetSpecificVersionValue (ITaskItem item, out bool specific_version)
 256                 {
 257                         specific_version = true;
 258                         string value = item.GetMetadata ("SpecificVersion");
 259                         if (String.IsNullOrEmpty (value)) {
 260                                 //AssemblyName name = new AssemblyName (item.ItemSpec);
 261                                 // If SpecificVersion is not specified, then
 262                                 // it is true if the Include is a strong name else false
 263                                 //specific_version = assembly_resolver.IsStrongNamed (name);
 264
 265                                 // msbuild seems to just look for a ',' in the name :/
 266                                 specific_version = item.ItemSpec.IndexOf (',') >= 0;
 267                                 return true;
 268                         }
 269
 270                         if (Boolean.TryParse (value, out specific_version))
 271                                 return true;
 272
 273                         Log.LogError ("Item '{0}' has attribute SpecificVersion with invalid value '{1}' " +
 274                                         "which could not be converted to a boolean.", item.ItemSpec, value);
 275                         return false;
 276                 }
 277
 278                 //FIXME: Consider CandidateAssemblyFiles also here
 279                 void ResolveAssemblyFiles ()
 280                 {
 281                         if (assemblyFiles == null)
 282                                 return;
 283
 284                         foreach (ITaskItem item in assemblyFiles) {
 285                                 assembly_resolver.ResetSearchLogger ();
 286
 287                                 if (!File.Exists (item.ItemSpec)) {
 288                                         LogWithPrecedingNewLine (MessageImportance.Low,
 289                                                         "Primary Reference from AssemblyFiles {0}, file not found. Ignoring",
 290                                                         item.ItemSpec);
 291                                         continue;
 292                                 }
 293
 294                                 LogWithPrecedingNewLine (MessageImportance.Low, "Primary Reference from AssemblyFiles {0}", item.ItemSpec);
 295                                 string copy_local;
 296
 297                                 AssemblyName aname;
 298                                 if (!assembly_resolver.TryGetAssemblyNameFromFile (item.ItemSpec, out aname)) {
 299                                         Log.LogWarning ("Reference '{0}' not resolved", item.ItemSpec);
 300                                         assembly_resolver.LogSearchLoggerMessages (MessageImportance.Normal);
 301                                         continue;
 302                                 }
 303
 304                                 assembly_resolver.LogSearchLoggerMessages (MessageImportance.Low);
 305
 306                                 ResolvedReference rr = assembly_resolver.GetResolvedReference (item, item.ItemSpec, aname, true,
 307                                                 SearchPath.RawFileName);
 308                                 copy_local = rr.CopyLocal.ToString ();
 309
 310                                 if (!TryAddNewReference (tempResolvedFiles, rr))
 311                                         // already resolved
 312                                         continue;
 313
 314                                 SetCopyLocal (rr.TaskItem, copy_local);
 315
 316                                 FindAndAddRelatedFiles (item.ItemSpec, copy_local);
 317                                 FindAndAddSatellites (item.ItemSpec, copy_local);
 318
 319                                 if (FindDependencies && !IsFromGacOrTargetFramework (rr) &&
 320                                                 rr.FoundInSearchPath != SearchPath.PkgConfig)
 321                                         primaryReferences.Add (new PrimaryReference (item, copy_local));
 322                         }
 323                 }
 324
 325                 // Tries to resolve assemblies referenced by @item
 326                 // Skips gac references
 327                 // @item : filename
 328                 void ResolveAssemblyFileDependencies (ITaskItem item, string parent_copy_local)
 329                 {
 330                         Queue<string> dependencies = new Queue<string> ();
 331                         dependencies.Enqueue (item.ItemSpec);
 332
 333                         while (dependencies.Count > 0) {
 334                                 string filename = Path.GetFullPath (dependencies.Dequeue ());
 335                                 Assembly asm = Assembly.ReflectionOnlyLoadFrom (filename);
 336                                 if (alreadyScannedAssemblyNames.ContainsKey (asm.FullName))
 337                                         continue;
 338
 339                                 // set the 1st search path to this ref's base path
 340                                 // Will be used for resolving the dependencies
 341                                 dependency_search_paths [0] = Path.GetDirectoryName (filename);
 342
 343                                 foreach (AssemblyName aname in asm.GetReferencedAssemblies ()) {
 344                                         if (alreadyScannedAssemblyNames.ContainsKey (aname.FullName))
 345                                                 continue;
 346
 347                                         ResolvedReference resolved_ref = ResolveDependencyByAssemblyName (
 348                                                 aname, asm.FullName, parent_copy_local);
 349
 350                                         if (IncludeDependencies (resolved_ref, aname.FullName)) {
 351                                                 tempResolvedDepFiles[resolved_ref.AssemblyName.FullName] = resolved_ref.TaskItem;
 352                                                 dependencies.Enqueue (resolved_ref.TaskItem.ItemSpec);
 353                                         }
 354                                 }
 355                                 alreadyScannedAssemblyNames.Add (asm.FullName, String.Empty);
 356                         }
 357                 }
 358
 359                 // Resolves by looking dependency_search_paths
 360                 // which is dir of parent reference file, and
 361                 // SearchPaths
 362                 ResolvedReference ResolveDependencyByAssemblyName (AssemblyName aname, string parent_asm_name,
 363                                 string parent_copy_local)
 364                 {
 365                         // This will check for compatible assembly name/version
 366                         ResolvedReference resolved_ref;
 367                         if (TryGetResolvedReferenceByAssemblyName (aname, false, out resolved_ref))
 368                                 return resolved_ref;
 369
 370                         LogWithPrecedingNewLine (MessageImportance.Low, "Dependency {0}", aname);
 371                         Log.LogMessage (MessageImportance.Low, "\tRequired by {0}", parent_asm_name);
 372
 373                         ITaskItem item = new TaskItem (aname.FullName);
 374                         item.SetMetadata ("SpecificVersion", "false");
 375                         resolved_ref = ResolveReference (item, dependency_search_paths, false);
 376
 377                         if (resolved_ref != null) {
 378                                 Log.LogMessage (MessageImportance.Low, "\tReference {0} resolved to {1}.",
 379                                         aname, resolved_ref.TaskItem.ItemSpec);
 380
 381                                 Log.LogMessage (MessageImportance.Low,
 382                                                 "\tReference found at search path {0}",
 383                                                 resolved_ref.FoundInSearchPathAsString);
 384
 385                                 assembly_resolver.LogSearchLoggerMessages (MessageImportance.Low);
 386
 387                                 if (resolved_ref.FoundInSearchPath == SearchPath.Directory) {
 388                                         // override CopyLocal with parent's val
 389                                         SetCopyLocal (resolved_ref.TaskItem, parent_copy_local);
 390
 391                                         Log.LogMessage (MessageImportance.Low,
 392                                                         "\tThis is CopyLocal {0} as parent item has this value",
 393                                                         parent_copy_local);
 394
 395                                         if (TryAddNewReference (tempResolvedFiles, resolved_ref)) {
 396                                                 FindAndAddRelatedFiles (resolved_ref.TaskItem.ItemSpec, parent_copy_local);
 397                                                 FindAndAddSatellites (resolved_ref.TaskItem.ItemSpec, parent_copy_local);
 398                                         }
 399                                 } else {
 400                                         //gac or tgtfmwk
 401                                         Log.LogMessage (MessageImportance.Low,
 402                                                         "\tThis is CopyLocal false as it is in the GAC," +
 403                                                         "target framework directory or provided by a package.");
 404
 405                                         TryAddNewReference (tempResolvedFiles, resolved_ref);
 406                                 }
 407                         } else {
 408                                 Log.LogMessage (MessageImportance.Low, "Could not resolve the assembly \"{0}\".", aname);
 409                                 assembly_resolver.LogSearchLoggerMessages (MessageImportance.Low);
 410                         }
 411
 412                         return resolved_ref;
 413                 }
 414
 415                 void FindAndAddRelatedFiles (string filename, string parent_copy_local)
 416                 {
 417                         if (!findRelatedFiles || allowedRelatedFileExtensions == null)
 418                                 return;
 419
 420                         foreach (string ext in allowedRelatedFileExtensions) {
 421                                 string rfile = Path.ChangeExtension (filename, ext);
 422                                 if (File.Exists (rfile)) {
 423                                         ITaskItem item = new TaskItem (rfile);
 424                                         SetCopyLocal (item, parent_copy_local);
 425
 426                                         tempRelatedFiles.AddUniqueFile (item);
 427                                 }
 428                         }
 429                 }
 430
 431                 void FindAndAddSatellites (string filename, string parent_copy_local)
 432                 {
 433                         if (!FindSatellites)
 434                                 return;
 435
 436                         string basepath = Path.GetDirectoryName (filename);
 437                         string resource = String.Format ("{0}{1}{2}",
 438                                         Path.GetFileNameWithoutExtension (filename),
 439                                         ".resources",
 440                                         Path.GetExtension (filename));
 441
 442                         string dir_sep = Path.DirectorySeparatorChar.ToString ();
 443                         foreach (string dir in Directory.GetDirectories (basepath)) {
 444                                 string culture = Path.GetFileName (dir);
 445                                 if (!CultureNamesTable.ContainsKey (culture))
 446                                         continue;
 447
 448                                 string res_path = Path.Combine (dir, resource);
 449                                 if (File.Exists (res_path)) {
 450                                         ITaskItem item = new TaskItem (res_path);
 451                                         SetCopyLocal (item, parent_copy_local);
 452                                         item.SetMetadata ("DestinationSubdirectory", culture + dir_sep);
 453                                         tempSatelliteFiles.AddUniqueFile (item);
 454                                 }
 455                         }
 456                 }
 457
 458                 // returns true is it was new
 459                 bool TryAddNewReference (List<ITaskItem> file_list, ResolvedReference key_ref)
 460                 {
 461                         ResolvedReference found_ref;
 462                         if (!TryGetResolvedReferenceByAssemblyName (key_ref.AssemblyName, key_ref.IsPrimary, out found_ref)) {
 463                                 assemblyNameToResolvedRef [key_ref.AssemblyName.Name] = key_ref;
 464                                 file_list.Add (key_ref.TaskItem);
 465
 466                                 return true;
 467                         }
 468                         return false;
 469                 }
 470
 471                 void SetCopyLocal (ITaskItem item, string copy_local)
 472                 {
 473                         item.SetMetadata ("CopyLocal", copy_local);
 474
 475                         // Assumed to be valid value
 476                         if (Boolean.Parse (copy_local))
 477                                 tempCopyLocalFiles.AddUniqueFile (item);
 478                 }
 479
 480                 bool TryGetResolvedReferenceByAssemblyName (AssemblyName key_aname, bool is_primary, out ResolvedReference found_ref)
 481                 {
 482                         found_ref = null;
 483                         // Match by just name
 484                         if (!assemblyNameToResolvedRef.TryGetValue (key_aname.Name, out found_ref))
 485                                 // not there
 486                                 return false;
 487
 488                         // match for full name
 489                         if (AssemblyResolver.AssemblyNamesCompatible (key_aname, found_ref.AssemblyName, true, false))
 490                                 // exact match, so its already there, dont add anything
 491                                 return true;
 492
 493                         // we have a name match, but version mismatch!
 494                         assembly_resolver.LogSearchMessage ("A conflict was detected between '{0}' and '{1}'",
 495                                         key_aname.FullName, found_ref.AssemblyName.FullName);
 496
 497                         if (is_primary == found_ref.IsPrimary) {
 498                                 assembly_resolver.LogSearchMessage ("Unable to choose between the two. " +
 499                                                 "Choosing '{0}' arbitrarily.", found_ref.AssemblyName.FullName);
 500                                 return true;
 501                         }
 502
 503                         // since all dependencies are processed after
 504                         // all primary refererences, the one in the cache
 505                         // has to be a primary
 506                         // Prefer a primary reference over a dependency
 507
 508                         assembly_resolver.LogSearchMessage ("Choosing '{0}' as it is a primary reference.",
 509                                         found_ref.AssemblyName.FullName);
 510
 511                         // If we can successfully use the primary reference, don't log a warning. It's too
 512                         // verbose.
 513                         //LogConflictWarning (found_ref.AssemblyName.FullName, key_aname.FullName);
 514
 515                         return true;
 516                 }
 517
 518                 void LogWithPrecedingNewLine (MessageImportance importance, string format, params object [] args)
 519                 {
 520                         Log.LogMessage (importance, String.Empty);
 521                         Log.LogMessage (importance, format, args);
 522                 }
 523
 524                 // conflict b/w @main and @conflicting, picking @main
 525                 void LogConflictWarning (string main, string conflicting)
 526                 {
 527                         string key = main + ":" + conflicting;
 528                         if (!conflictWarningsCache.ContainsKey (key)) {
 529                                 Log.LogWarning ("Found a conflict between : '{0}' and '{1}'. Using '{0}' reference.",
 530                                                 main, conflicting);
 531                                 conflictWarningsCache [key] = key;
 532                         }
 533                 }
 534
 535                 bool IsFromGacOrTargetFramework (ResolvedReference rr)
 536                 {
 537                         return rr.FoundInSearchPath == SearchPath.Gac ||
 538                                 rr.FoundInSearchPath == SearchPath.TargetFrameworkDirectory;
 539                 }
 540
 541                 bool IncludeDependencies (ResolvedReference rr, string aname)
 542                 {
 543                         if (rr == null)
 544                                 return false;
 545                         if (aname.Equals ("System.Runtime, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"))
 546                                 return true;
 547                         return !IsFromGacOrTargetFramework (rr) && rr.FoundInSearchPath != SearchPath.PkgConfig;
 548                 }
 549
 550                 void LogTaskParameters ()
 551                 {
 552                         Log.LogMessage (MessageImportance.Low, "TargetFrameworkDirectories:");
 553                         if (TargetFrameworkDirectories != null)
 554                                 foreach (string dir in TargetFrameworkDirectories)
 555                                         Log.LogMessage (MessageImportance.Low, "\t{0}", dir);
 556
 557                         Log.LogMessage (MessageImportance.Low, "SearchPaths:");
 558                         if (SearchPaths != null)
 559                                 foreach (string path in SearchPaths)
 560                                         Log.LogMessage (MessageImportance.Low, "\t{0}", path);
 561                 }
 562
 563                 public bool AutoUnify {
 564                         get { return autoUnify; }
 565                         set { autoUnify = value; }
 566                 }
 567
 568                 public ITaskItem[] AssemblyFiles {
 569                         get { return assemblyFiles; }
 570                         set { assemblyFiles = value; }
 571                 }
 572
 573                 public ITaskItem[] Assemblies {
 574                         get { return assemblies; }
 575                         set { assemblies = value; }
 576                 }
 577
 578                 public string AppConfigFile {
 579                         get { return appConfigFile; }
 580                         set { appConfigFile = value; }
 581                 }
 582
 583                 public string[] AllowedAssemblyExtensions {
 584                         get { return allowedAssemblyExtensions; }
 585                         set { allowedAssemblyExtensions = value; }
 586                 }
 587
 588                 public string[] AllowedRelatedFileExtensions {
 589                         get { return allowedRelatedFileExtensions; }
 590                         set { allowedRelatedFileExtensions = value; }
 591                 }
 592
 593                 public string[] CandidateAssemblyFiles {
 594                         get { return candidateAssemblyFiles; }
 595                         set { candidateAssemblyFiles = value; }
 596                 }
 597
 598                 [Output]
 599                 public ITaskItem[] CopyLocalFiles {
 600                         get { return copyLocalFiles; }
 601                 }
 602
 603                 [Output]
 604                 public ITaskItem[] FilesWritten {
 605                         get { return filesWritten; }
 606                         set { filesWritten = value; }
 607                 }
 608
 609                 public bool FindDependencies {
 610                         get { return findDependencies; }
 611                         set { findDependencies = value; }
 612                 }
 613
 614                 public bool FindRelatedFiles {
 615                         get { return findRelatedFiles; }
 616                         set { findRelatedFiles = value; }
 617                 }
 618
 619                 public bool FindSatellites {
 620                         get { return findSatellites; }
 621                         set { findSatellites = value; }
 622                 }
 623
 624                 public bool FindSerializationAssemblies {
 625                         get { return findSerializationAssemblies; }
 626                         set { findSerializationAssemblies = value; }
 627                 }
 628
 629                 public
 630                 ITaskItem[]
 631                 InstalledAssemblyTables { get; set; }
 632
 633                 [Output]
 634                 public ITaskItem[] RelatedFiles {
 635                         get { return relatedFiles; }
 636                 }
 637
 638                 [Output]
 639                 public ITaskItem[] ResolvedDependencyFiles {
 640                         get { return resolvedDependencyFiles; }
 641                 }
 642
 643                 [Output]
 644                 public ITaskItem[] ResolvedFiles {
 645                         get { return resolvedFiles; }
 646                 }
 647
 648                 [Output]
 649                 public ITaskItem[] SatelliteFiles {
 650                         get { return satelliteFiles; }
 651                 }
 652
 653                 [Output]
 654                 public ITaskItem[] ScatterFiles {
 655                         get { return scatterFiles; }
 656                 }
 657
 658                 [Required]
 659                 public string[] SearchPaths {
 660                         get { return searchPaths; }
 661                         set { searchPaths = value; }
 662                 }
 663
 664                 [Output]
 665                 public ITaskItem[] SerializationAssemblyFiles {
 666                         get { return serializationAssemblyFiles; }
 667                 }
 668
 669                 public bool Silent {
 670                         get { return silent; }
 671                         set { silent = value; }
 672                 }
 673
 674                 public string StateFile {
 675                         get { return stateFile; }
 676                         set { stateFile = value; }
 677                 }
 678
 679                 [Output]
 680                 public ITaskItem[] SuggestedRedirects {
 681                         get { return suggestedRedirects; }
 682                 }
 683
 684                 public string TargetFrameworkMoniker { get; set; }
 685
 686                 public string TargetFrameworkMonikerDisplayName { get; set; }
 687
 688                 public string TargetFrameworkVersion { get; set; }
 689
 690                 public string[] TargetFrameworkDirectories {
 691                         get { return targetFrameworkDirectories; }
 692                         set { targetFrameworkDirectories = value; }
 693                 }
 694
 695                 public string TargetProcessorArchitecture {
 696                         get { return targetProcessorArchitecture; }
 697                         set { targetProcessorArchitecture = value; }
 698                 }
 699
 700
 701                 static Dictionary<string, string> cultureNamesTable;
 702                 static Dictionary<string, string> CultureNamesTable {
 703                         get {
 704                                 if (cultureNamesTable == null) {
 705                                         cultureNamesTable = new Dictionary<string, string> ();
 706                                         foreach (CultureInfo ci in CultureInfo.GetCultures (CultureTypes.AllCultures))
 707                                                 cultureNamesTable [ci.Name] = ci.Name;
 708                                 }
 709
 710                                 return cultureNamesTable;
 711                         }
 712                 }
 713         }
 714
 715         static class ResolveAssemblyReferenceHelper {
 716                 public static void AddUniqueFile (this Dictionary<string, ITaskItem> dic, ITaskItem item)
 717                 {
 718                         if (dic == null)
 719                                 throw new ArgumentNullException ("dic");
 720                         if (item == null)
 721                                 throw new ArgumentNullException ("item");
 722
 723                         string fullpath = Path.GetFullPath (item.ItemSpec);
 724                         if (!dic.ContainsKey (fullpath))
 725                                 dic [fullpath] = item;
 726                 }
 727         }
 728
 729         struct PrimaryReference {
 730                 public ITaskItem TaskItem;
 731                 public string ParentCopyLocal;
 732
 733                 public PrimaryReference (ITaskItem item, string parent_copy_local)
 734                 {
 735                         TaskItem = item;
 736                         ParentCopyLocal = parent_copy_local;
 737                 }
 738         }
 739
 740 }