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                 string[]        installedAssemblyTables;
  57                 ITaskItem[]     relatedFiles;
  58                 ITaskItem[]     resolvedDependencyFiles;
  59                 ITaskItem[]     resolvedFiles;
  60                 ITaskItem[]     satelliteFiles;
  61                 ITaskItem[]     scatterFiles;
  62                 string[]        searchPaths;
  63                 ITaskItem[]     serializationAssemblyFiles;
  64                 bool            silent;
  65                 string          stateFile;
  66                 ITaskItem[]     suggestedRedirects;
  67                 string[]        targetFrameworkDirectories;
  68                 string          targetProcessorArchitecture;
  69                 static string []        default_assembly_extensions;
  70
  71                 AssemblyResolver        assembly_resolver;
  72                 List<string> dependency_search_paths;
  73                 Dictionary<string, ResolvedReference> assemblyNameToResolvedRef;
  74                 Dictionary<string, ITaskItem>   tempSatelliteFiles, tempRelatedFiles,
  75                         tempResolvedDepFiles, tempCopyLocalFiles;
  76                 List<ITaskItem> tempResolvedFiles;
  77                 List<PrimaryReference> primaryReferences;
  78                 Dictionary<string, string> alreadyScannedAssemblyNames;
  79                 Dictionary<string, string> conflictWarningsCache;
  80
  81                 //FIXME: construct and use a graph of the dependencies, useful across projects
  82
  83                 static ResolveAssemblyReference ()
  84                 {
  85                         default_assembly_extensions = new string [] { ".dll", ".exe" };
  86                 }
  87
  88                 public ResolveAssemblyReference ()
  89                 {
  90                         assembly_resolver = new AssemblyResolver ();
  91                 }
  92
  93                 //FIXME: make this reusable
  94                 public override bool Execute ()
  95                 {
  96                         if (assemblies == null && assemblyFiles == null)
  97                                 // nothing to resolve
  98                                 return true;
  99
 100                         LogTaskParameters ();
 101
 102                         assembly_resolver.Log = Log;
 103                         tempResolvedFiles = new List<ITaskItem> ();
 104                         tempCopyLocalFiles = new Dictionary<string, ITaskItem> ();
 105                         tempSatelliteFiles = new Dictionary<string, ITaskItem> ();
 106                         tempRelatedFiles = new Dictionary<string, ITaskItem> ();
 107                         tempResolvedDepFiles = new Dictionary<string, ITaskItem> ();
 108
 109                         primaryReferences = new List<PrimaryReference> ();
 110                         assemblyNameToResolvedRef = new Dictionary<string, ResolvedReference> ();
 111                         conflictWarningsCache = new Dictionary<string, string> ();
 112
 113                         ResolveAssemblies ();
 114                         ResolveAssemblyFiles ();
 115                         resolvedFiles = tempResolvedFiles.ToArray ();
 116
 117                         alreadyScannedAssemblyNames = new Dictionary<string, string> ();
 118
 119                         // the first element is place holder for parent assembly's dir
 120                         dependency_search_paths = new List<string> () { String.Empty };
 121                         dependency_search_paths.AddRange (searchPaths);
 122
 123                         // resolve dependencies
 124                         foreach (PrimaryReference pref in primaryReferences)
 125                                 ResolveAssemblyFileDependencies (pref.TaskItem, pref.ParentCopyLocal);
 126
 127                         copyLocalFiles = tempCopyLocalFiles.Values.ToArray ();
 128                         satelliteFiles = tempSatelliteFiles.Values.ToArray ();
 129                         relatedFiles = tempRelatedFiles.Values.ToArray ();
 130                         resolvedDependencyFiles = tempResolvedDepFiles.Values.ToArray ();
 131
 132                         tempResolvedFiles.Clear ();
 133                         tempCopyLocalFiles.Clear ();
 134                         tempSatelliteFiles.Clear ();
 135                         tempRelatedFiles.Clear ();
 136                         tempResolvedDepFiles.Clear ();
 137                         alreadyScannedAssemblyNames.Clear ();
 138                         primaryReferences.Clear ();
 139                         assemblyNameToResolvedRef.Clear ();
 140                         conflictWarningsCache.Clear ();
 141                         dependency_search_paths = null;
 142
 143                         return true;
 144                 }
 145
 146                 void ResolveAssemblies ()
 147                 {
 148                         if (assemblies == null || assemblies.Length == 0)
 149                                 return;
 150
 151                         foreach (ITaskItem item in assemblies) {
 152                                 if (!String.IsNullOrEmpty (item.GetMetadata ("SubType"))) {
 153                                         Log.LogWarning ("Reference '{0}' has non-empty SubType. Ignoring.", item.ItemSpec);
 154                                         continue;
 155                                 }
 156
 157                                 LogWithPrecedingNewLine (MessageImportance.Low, "Primary Reference {0}", item.ItemSpec);
 158                                 ResolvedReference resolved_ref = ResolveReference (item, searchPaths, true);
 159                                 if (resolved_ref == null)
 160                                         resolved_ref = ResolveWithAlternateName (item, allowedAssemblyExtensions ?? default_assembly_extensions);
 161
 162                                 if (resolved_ref == null) {
 163                                         Log.LogWarning ("Reference '{0}' not resolved", item.ItemSpec);
 164                                         assembly_resolver.LogSearchLoggerMessages (MessageImportance.Normal);
 165                                 } else {
 166                                         Log.LogMessage (MessageImportance.Low,
 167                                                         "\tReference {0} resolved to {1}. CopyLocal = {2}",
 168                                                         item.ItemSpec, resolved_ref.TaskItem,
 169                                                         resolved_ref.TaskItem.GetMetadata ("CopyLocal"));
 170
 171                                         Log.LogMessage (MessageImportance.Low,
 172                                                         "\tReference found at search path {0}",
 173                                                         resolved_ref.FoundInSearchPathAsString);
 174
 175                                         assembly_resolver.LogSearchLoggerMessages (MessageImportance.Low);
 176
 177                                         if (TryAddNewReference (tempResolvedFiles, resolved_ref) &&
 178                                                 !IsFromGacOrTargetFramework (resolved_ref) &&
 179                                                 resolved_ref.FoundInSearchPath != SearchPath.PkgConfig) {
 180                                                 primaryReferences.Add (new PrimaryReference (
 181                                                                 resolved_ref.TaskItem,
 182                                                                 resolved_ref.TaskItem.GetMetadata ("CopyLocal")));
 183                                         }
 184                                 }
 185                         }
 186                 }
 187
 188
 189                 ResolvedReference ResolveWithAlternateName (ITaskItem item, string[] extensions)
 190                 {
 191                         foreach (string extn in extensions) {
 192                                 if (item.ItemSpec.EndsWith (extn)) {
 193                                         ITaskItem altitem = new TaskItem (item.ItemSpec.Substring (0, item.ItemSpec.Length - extn.Length));
 194                                         item.CopyMetadataTo (altitem);
 195                                         return ResolveReference (altitem, searchPaths, true);
 196                                 }
 197                         }
 198                         return null;
 199                 }
 200
 201                 // Use @search_paths to resolve the reference
 202                 ResolvedReference ResolveReference (ITaskItem item, IEnumerable<string> search_paths, bool set_copy_local)
 203                 {
 204                         ResolvedReference resolved = null;
 205                         bool specific_version;
 206
 207                         assembly_resolver.ResetSearchLogger ();
 208
 209                         if (!TryGetSpecificVersionValue (item, out specific_version))
 210                                 return null;
 211
 212                         foreach (string spath in search_paths) {
 213                                 assembly_resolver.LogSearchMessage ("For searchpath {0}", spath);
 214
 215                                 if (String.Compare (spath, "{HintPathFromItem}") == 0) {
 216                                         resolved = assembly_resolver.ResolveHintPathReference (item, specific_version);
 217                                 } else if (String.Compare (spath, "{TargetFrameworkDirectory}") == 0) {
 218                                         if (targetFrameworkDirectories == null)
 219                                                 continue;
 220                                         foreach (string fpath in targetFrameworkDirectories) {
 221                                                 resolved = assembly_resolver.FindInTargetFramework (item,
 222                                                                 fpath, specific_version);
 223                                                 if (resolved != null)
 224                                                         break;
 225                                         }
 226                                 } else if (String.Compare (spath, "{GAC}") == 0) {
 227                                         resolved = assembly_resolver.ResolveGacReference (item, specific_version);
 228                                 } else if (String.Compare (spath, "{RawFileName}") == 0) {
 229                                         //FIXME: identify assembly names, as extract the name, and try with that?
 230                                         AssemblyName aname;
 231                                         if (assembly_resolver.TryGetAssemblyNameFromFile (item.ItemSpec, out aname))
 232                                                 resolved = assembly_resolver.GetResolvedReference (item, item.ItemSpec, aname, true,
 233                                                                 SearchPath.RawFileName);
 234                                 } else if (String.Compare (spath, "{CandidateAssemblyFiles}") == 0) {
 235                                         assembly_resolver.LogSearchMessage (
 236                                                         "Warning: {{CandidateAssemblyFiles}} not supported currently");
 237                                 } else if (String.Compare (spath, "{PkgConfig}") == 0) {
 238                                         resolved = assembly_resolver.ResolvePkgConfigReference (item, specific_version);
 239                                 } else {
 240                                         resolved = assembly_resolver.FindInDirectory (
 241                                                         item, spath,
 242                                                         allowedAssemblyExtensions ?? default_assembly_extensions,
 243                                                         specific_version);
 244                                 }
 245
 246                                 if (resolved != null)
 247                                         break;
 248                         }
 249
 250                         if (resolved != null && set_copy_local)
 251                                 SetCopyLocal (resolved.TaskItem, resolved.CopyLocal.ToString ());
 252
 253                         return resolved;
 254                 }
 255
 256                 bool TryGetSpecificVersionValue (ITaskItem item, out bool specific_version)
 257                 {
 258                         specific_version = true;
 259                         string value = item.GetMetadata ("SpecificVersion");
 260                         if (String.IsNullOrEmpty (value)) {
 261                                 //AssemblyName name = new AssemblyName (item.ItemSpec);
 262                                 // If SpecificVersion is not specified, then
 263                                 // it is true if the Include is a strong name else false
 264                                 //specific_version = assembly_resolver.IsStrongNamed (name);
 265
 266                                 // msbuild seems to just look for a ',' in the name :/
 267                                 specific_version = item.ItemSpec.IndexOf (',') >= 0;
 268                                 return true;
 269                         }
 270
 271                         if (Boolean.TryParse (value, out specific_version))
 272                                 return true;
 273
 274                         Log.LogError ("Item '{0}' has attribute SpecificVersion with invalid value '{1}' " +
 275                                         "which could not be converted to a boolean.", item.ItemSpec, value);
 276                         return false;
 277                 }
 278
 279                 //FIXME: Consider CandidateAssemblyFiles also here
 280                 void ResolveAssemblyFiles ()
 281                 {
 282                         if (assemblyFiles == null)
 283                                 return;
 284
 285                         foreach (ITaskItem item in assemblyFiles) {
 286                                 assembly_resolver.ResetSearchLogger ();
 287
 288                                 if (!File.Exists (item.ItemSpec)) {
 289                                         LogWithPrecedingNewLine (MessageImportance.Low,
 290                                                         "Primary Reference from AssemblyFiles {0}, file not found. Ignoring",
 291                                                         item.ItemSpec);
 292                                         continue;
 293                                 }
 294
 295                                 LogWithPrecedingNewLine (MessageImportance.Low, "Primary Reference from AssemblyFiles {0}", item.ItemSpec);
 296                                 string copy_local;
 297
 298                                 AssemblyName aname;
 299                                 if (!assembly_resolver.TryGetAssemblyNameFromFile (item.ItemSpec, out aname)) {
 300                                         Log.LogWarning ("Reference '{0}' not resolved", item.ItemSpec);
 301                                         assembly_resolver.LogSearchLoggerMessages (MessageImportance.Normal);
 302                                         continue;
 303                                 }
 304
 305                                 assembly_resolver.LogSearchLoggerMessages (MessageImportance.Low);
 306
 307                                 ResolvedReference rr = assembly_resolver.GetResolvedReference (item, item.ItemSpec, aname, true,
 308                                                 SearchPath.RawFileName);
 309                                 copy_local = rr.CopyLocal.ToString ();
 310
 311                                 if (!TryAddNewReference (tempResolvedFiles, rr))
 312                                         // already resolved
 313                                         continue;
 314
 315                                 SetCopyLocal (rr.TaskItem, copy_local);
 316
 317                                 FindAndAddRelatedFiles (item.ItemSpec, copy_local);
 318                                 FindAndAddSatellites (item.ItemSpec, copy_local);
 319
 320                                 if (FindDependencies && !IsFromGacOrTargetFramework (rr) &&
 321                                                 rr.FoundInSearchPath != SearchPath.PkgConfig)
 322                                         primaryReferences.Add (new PrimaryReference (item, copy_local));
 323                         }
 324                 }
 325
 326                 // Tries to resolve assemblies referenced by @item
 327                 // Skips gac references
 328                 // @item : filename
 329                 void ResolveAssemblyFileDependencies (ITaskItem item, string parent_copy_local)
 330                 {
 331                         Queue<string> dependencies = new Queue<string> ();
 332                         dependencies.Enqueue (item.ItemSpec);
 333
 334                         while (dependencies.Count > 0) {
 335                                 string filename = Path.GetFullPath (dependencies.Dequeue ());
 336                                 Assembly asm = Assembly.ReflectionOnlyLoadFrom (filename);
 337                                 if (alreadyScannedAssemblyNames.ContainsKey (asm.FullName))
 338                                         continue;
 339
 340                                 // set the 1st search path to this ref's base path
 341                                 // Will be used for resolving the dependencies
 342                                 dependency_search_paths [0] = Path.GetDirectoryName (filename);
 343
 344                                 foreach (AssemblyName aname in asm.GetReferencedAssemblies ()) {
 345                                         if (alreadyScannedAssemblyNames.ContainsKey (aname.FullName))
 346                                                 continue;
 347
 348                                         ResolvedReference resolved_ref = ResolveDependencyByAssemblyName (
 349                                                 aname, asm.FullName, parent_copy_local);
 350
 351                                         if (IncludeDependencies (resolved_ref, aname.FullName)) {
 352                                                 tempResolvedDepFiles[resolved_ref.AssemblyName.FullName] = resolved_ref.TaskItem;
 353                                                 dependencies.Enqueue (resolved_ref.TaskItem.ItemSpec);
 354                                         }
 355                                 }
 356                                 alreadyScannedAssemblyNames.Add (asm.FullName, String.Empty);
 357                         }
 358                 }
 359
 360                 // Resolves by looking dependency_search_paths
 361                 // which is dir of parent reference file, and
 362                 // SearchPaths
 363                 ResolvedReference ResolveDependencyByAssemblyName (AssemblyName aname, string parent_asm_name,
 364                                 string parent_copy_local)
 365                 {
 366                         // This will check for compatible assembly name/version
 367                         ResolvedReference resolved_ref;
 368                         if (TryGetResolvedReferenceByAssemblyName (aname, false, out resolved_ref))
 369                                 return resolved_ref;
 370
 371                         LogWithPrecedingNewLine (MessageImportance.Low, "Dependency {0}", aname);
 372                         Log.LogMessage (MessageImportance.Low, "\tRequired by {0}", parent_asm_name);
 373
 374                         ITaskItem item = new TaskItem (aname.FullName);
 375                         item.SetMetadata ("SpecificVersion", "false");
 376                         resolved_ref = ResolveReference (item, dependency_search_paths, false);
 377
 378                         if (resolved_ref != null) {
 379                                 Log.LogMessage (MessageImportance.Low, "\tReference {0} resolved to {1}.",
 380                                         aname, resolved_ref.TaskItem.ItemSpec);
 381
 382                                 Log.LogMessage (MessageImportance.Low,
 383                                                 "\tReference found at search path {0}",
 384                                                 resolved_ref.FoundInSearchPathAsString);
 385
 386                                 assembly_resolver.LogSearchLoggerMessages (MessageImportance.Low);
 387
 388                                 if (resolved_ref.FoundInSearchPath == SearchPath.Directory) {
 389                                         // override CopyLocal with parent's val
 390                                         SetCopyLocal (resolved_ref.TaskItem, parent_copy_local);
 391
 392                                         Log.LogMessage (MessageImportance.Low,
 393                                                         "\tThis is CopyLocal {0} as parent item has this value",
 394                                                         parent_copy_local);
 395
 396                                         if (TryAddNewReference (tempResolvedFiles, resolved_ref)) {
 397                                                 FindAndAddRelatedFiles (resolved_ref.TaskItem.ItemSpec, parent_copy_local);
 398                                                 FindAndAddSatellites (resolved_ref.TaskItem.ItemSpec, parent_copy_local);
 399                                         }
 400                                 } else {
 401                                         //gac or tgtfmwk
 402                                         Log.LogMessage (MessageImportance.Low,
 403                                                         "\tThis is CopyLocal false as it is in the GAC," +
 404                                                         "target framework directory or provided by a package.");
 405
 406                                         TryAddNewReference (tempResolvedFiles, resolved_ref);
 407                                 }
 408                         } else {
 409                                 Log.LogMessage (MessageImportance.Low, "Could not resolve the assembly \"{0}\".", aname);
 410                                 assembly_resolver.LogSearchLoggerMessages (MessageImportance.Low);
 411                         }
 412
 413                         return resolved_ref;
 414                 }
 415
 416                 void FindAndAddRelatedFiles (string filename, string parent_copy_local)
 417                 {
 418                         if (!findRelatedFiles || allowedRelatedFileExtensions == null)
 419                                 return;
 420
 421                         foreach (string ext in allowedRelatedFileExtensions) {
 422                                 string rfile = Path.ChangeExtension (filename, ext);
 423                                 if (File.Exists (rfile)) {
 424                                         ITaskItem item = new TaskItem (rfile);
 425                                         SetCopyLocal (item, parent_copy_local);
 426
 427                                         tempRelatedFiles.AddUniqueFile (item);
 428                                 }
 429                         }
 430                 }
 431
 432                 void FindAndAddSatellites (string filename, string parent_copy_local)
 433                 {
 434                         if (!FindSatellites)
 435                                 return;
 436
 437                         string basepath = Path.GetDirectoryName (filename);
 438                         string resource = String.Format ("{0}{1}{2}",
 439                                         Path.GetFileNameWithoutExtension (filename),
 440                                         ".resources",
 441                                         Path.GetExtension (filename));
 442
 443                         string dir_sep = Path.DirectorySeparatorChar.ToString ();
 444                         foreach (string dir in Directory.GetDirectories (basepath)) {
 445                                 string culture = Path.GetFileName (dir);
 446                                 if (!CultureNamesTable.ContainsKey (culture))
 447                                         continue;
 448
 449                                 string res_path = Path.Combine (dir, resource);
 450                                 if (File.Exists (res_path)) {
 451                                         ITaskItem item = new TaskItem (res_path);
 452                                         SetCopyLocal (item, parent_copy_local);
 453                                         item.SetMetadata ("DestinationSubdirectory", culture + dir_sep);
 454                                         tempSatelliteFiles.AddUniqueFile (item);
 455                                 }
 456                         }
 457                 }
 458
 459                 // returns true is it was new
 460                 bool TryAddNewReference (List<ITaskItem> file_list, ResolvedReference key_ref)
 461                 {
 462                         ResolvedReference found_ref;
 463                         if (!TryGetResolvedReferenceByAssemblyName (key_ref.AssemblyName, key_ref.IsPrimary, out found_ref)) {
 464                                 assemblyNameToResolvedRef [key_ref.AssemblyName.Name] = key_ref;
 465                                 file_list.Add (key_ref.TaskItem);
 466
 467                                 return true;
 468                         }
 469                         return false;
 470                 }
 471
 472                 void SetCopyLocal (ITaskItem item, string copy_local)
 473                 {
 474                         item.SetMetadata ("CopyLocal", copy_local);
 475
 476                         // Assumed to be valid value
 477                         if (Boolean.Parse (copy_local))
 478                                 tempCopyLocalFiles.AddUniqueFile (item);
 479                 }
 480
 481                 bool TryGetResolvedReferenceByAssemblyName (AssemblyName key_aname, bool is_primary, out ResolvedReference found_ref)
 482                 {
 483                         found_ref = null;
 484                         // Match by just name
 485                         if (!assemblyNameToResolvedRef.TryGetValue (key_aname.Name, out found_ref))
 486                                 // not there
 487                                 return false;
 488
 489                         // match for full name
 490                         if (AssemblyResolver.AssemblyNamesCompatible (key_aname, found_ref.AssemblyName, true, false))
 491                                 // exact match, so its already there, dont add anything
 492                                 return true;
 493
 494                         // we have a name match, but version mismatch!
 495                         assembly_resolver.LogSearchMessage ("A conflict was detected between '{0}' and '{1}'",
 496                                         key_aname.FullName, found_ref.AssemblyName.FullName);
 497
 498                         if (is_primary == found_ref.IsPrimary) {
 499                                 assembly_resolver.LogSearchMessage ("Unable to choose between the two. " +
 500                                                 "Choosing '{0}' arbitrarily.", found_ref.AssemblyName.FullName);
 501                                 return true;
 502                         }
 503
 504                         // since all dependencies are processed after
 505                         // all primary refererences, the one in the cache
 506                         // has to be a primary
 507                         // Prefer a primary reference over a dependency
 508
 509                         assembly_resolver.LogSearchMessage ("Choosing '{0}' as it is a primary reference.",
 510                                         found_ref.AssemblyName.FullName);
 511
 512                         // If we can successfully use the primary reference, don't log a warning. It's too
 513                         // verbose.
 514                         //LogConflictWarning (found_ref.AssemblyName.FullName, key_aname.FullName);
 515
 516                         return true;
 517                 }
 518
 519                 void LogWithPrecedingNewLine (MessageImportance importance, string format, params object [] args)
 520                 {
 521                         Log.LogMessage (importance, String.Empty);
 522                         Log.LogMessage (importance, format, args);
 523                 }
 524
 525                 // conflict b/w @main and @conflicting, picking @main
 526                 void LogConflictWarning (string main, string conflicting)
 527                 {
 528                         string key = main + ":" + conflicting;
 529                         if (!conflictWarningsCache.ContainsKey (key)) {
 530                                 Log.LogWarning ("Found a conflict between : '{0}' and '{1}'. Using '{0}' reference.",
 531                                                 main, conflicting);
 532                                 conflictWarningsCache [key] = key;
 533                         }
 534                 }
 535
 536                 bool IsFromGacOrTargetFramework (ResolvedReference rr)
 537                 {
 538                         return rr.FoundInSearchPath == SearchPath.Gac ||
 539                                 rr.FoundInSearchPath == SearchPath.TargetFrameworkDirectory;
 540                 }
 541
 542                 bool IncludeDependencies (ResolvedReference rr, string aname)
 543                 {
 544                         if (rr == null)
 545                                 return false;
 546                         if (aname.Equals ("System.Runtime, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"))
 547                                 return true;
 548                         return !IsFromGacOrTargetFramework (rr) && rr.FoundInSearchPath != SearchPath.PkgConfig;
 549                 }
 550
 551                 void LogTaskParameters ()
 552                 {
 553                         Log.LogMessage (MessageImportance.Low, "TargetFrameworkDirectories:");
 554                         if (TargetFrameworkDirectories != null)
 555                                 foreach (string dir in TargetFrameworkDirectories)
 556                                         Log.LogMessage (MessageImportance.Low, "\t{0}", dir);
 557
 558                         Log.LogMessage (MessageImportance.Low, "SearchPaths:");
 559                         if (SearchPaths != null)
 560                                 foreach (string path in SearchPaths)
 561                                         Log.LogMessage (MessageImportance.Low, "\t{0}", path);
 562                 }
 563
 564                 public bool AutoUnify {
 565                         get { return autoUnify; }
 566                         set { autoUnify = value; }
 567                 }
 568
 569                 public ITaskItem[] AssemblyFiles {
 570                         get { return assemblyFiles; }
 571                         set { assemblyFiles = value; }
 572                 }
 573
 574                 public ITaskItem[] Assemblies {
 575                         get { return assemblies; }
 576                         set { assemblies = value; }
 577                 }
 578
 579                 public string AppConfigFile {
 580                         get { return appConfigFile; }
 581                         set { appConfigFile = value; }
 582                 }
 583
 584                 public string[] AllowedAssemblyExtensions {
 585                         get { return allowedAssemblyExtensions; }
 586                         set { allowedAssemblyExtensions = value; }
 587                 }
 588
 589                 public string[] AllowedRelatedFileExtensions {
 590                         get { return allowedRelatedFileExtensions; }
 591                         set { allowedRelatedFileExtensions = value; }
 592                 }
 593
 594                 public string[] CandidateAssemblyFiles {
 595                         get { return candidateAssemblyFiles; }
 596                         set { candidateAssemblyFiles = value; }
 597                 }
 598
 599                 [Output]
 600                 public ITaskItem[] CopyLocalFiles {
 601                         get { return copyLocalFiles; }
 602                 }
 603
 604                 [Output]
 605                 public ITaskItem[] FilesWritten {
 606                         get { return filesWritten; }
 607                         set { filesWritten = value; }
 608                 }
 609
 610                 public bool FindDependencies {
 611                         get { return findDependencies; }
 612                         set { findDependencies = value; }
 613                 }
 614
 615                 public bool FindRelatedFiles {
 616                         get { return findRelatedFiles; }
 617                         set { findRelatedFiles = value; }
 618                 }
 619
 620                 public bool FindSatellites {
 621                         get { return findSatellites; }
 622                         set { findSatellites = value; }
 623                 }
 624
 625                 public bool FindSerializationAssemblies {
 626                         get { return findSerializationAssemblies; }
 627                         set { findSerializationAssemblies = value; }
 628                 }
 629 /*
 630                 public string[] InstalledAssemblyTables {
 631                         get { return installedAssemblyTables; }
 632                         set { installedAssemblyTables = value; }
 633                 }
 634 */
 635                 [Output]
 636                 public ITaskItem[] RelatedFiles {
 637                         get { return relatedFiles; }
 638                 }
 639
 640                 [Output]
 641                 public ITaskItem[] ResolvedDependencyFiles {
 642                         get { return resolvedDependencyFiles; }
 643                 }
 644
 645                 [Output]
 646                 public ITaskItem[] ResolvedFiles {
 647                         get { return resolvedFiles; }
 648                 }
 649
 650                 [Output]
 651                 public ITaskItem[] SatelliteFiles {
 652                         get { return satelliteFiles; }
 653                 }
 654
 655                 [Output]
 656                 public ITaskItem[] ScatterFiles {
 657                         get { return scatterFiles; }
 658                 }
 659
 660                 [Required]
 661                 public string[] SearchPaths {
 662                         get { return searchPaths; }
 663                         set { searchPaths = value; }
 664                 }
 665
 666                 [Output]
 667                 public ITaskItem[] SerializationAssemblyFiles {
 668                         get { return serializationAssemblyFiles; }
 669                 }
 670
 671                 public bool Silent {
 672                         get { return silent; }
 673                         set { silent = value; }
 674                 }
 675
 676                 public string StateFile {
 677                         get { return stateFile; }
 678                         set { stateFile = value; }
 679                 }
 680
 681                 [Output]
 682                 public ITaskItem[] SuggestedRedirects {
 683                         get { return suggestedRedirects; }
 684                 }
 685
 686 #if NET_4_0
 687                 public string TargetFrameworkMoniker { get; set; }
 688
 689                 public string TargetFrameworkMonikerDisplayName { get; set; }
 690 #endif
 691
 692                 public string TargetFrameworkVersion { get; set; }
 693
 694                 public string[] TargetFrameworkDirectories {
 695                         get { return targetFrameworkDirectories; }
 696                         set { targetFrameworkDirectories = value; }
 697                 }
 698
 699                 public string TargetProcessorArchitecture {
 700                         get { return targetProcessorArchitecture; }
 701                         set { targetProcessorArchitecture = value; }
 702                 }
 703
 704
 705                 static Dictionary<string, string> cultureNamesTable;
 706                 static Dictionary<string, string> CultureNamesTable {
 707                         get {
 708                                 if (cultureNamesTable == null) {
 709                                         cultureNamesTable = new Dictionary<string, string> ();
 710                                         foreach (CultureInfo ci in CultureInfo.GetCultures (CultureTypes.AllCultures))
 711                                                 cultureNamesTable [ci.Name] = ci.Name;
 712                                 }
 713
 714                                 return cultureNamesTable;
 715                         }
 716                 }
 717         }
 718
 719         static class ResolveAssemblyReferenceHelper {
 720                 public static void AddUniqueFile (this Dictionary<string, ITaskItem> dic, ITaskItem item)
 721                 {
 722                         if (dic == null)
 723                                 throw new ArgumentNullException ("dic");
 724                         if (item == null)
 725                                 throw new ArgumentNullException ("item");
 726
 727                         string fullpath = Path.GetFullPath (item.ItemSpec);
 728                         if (!dic.ContainsKey (fullpath))
 729                                 dic [fullpath] = item;
 730                 }
 731         }
 732
 733         struct PrimaryReference {
 734                 public ITaskItem TaskItem;
 735                 public string ParentCopyLocal;
 736
 737                 public PrimaryReference (ITaskItem item, string parent_copy_local)
 738                 {
 739                         TaskItem = item;
 740                         ParentCopyLocal = parent_copy_local;
 741                 }
 742         }
 743
 744 }