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                         var spath_index  = 0;
 212                         foreach (string spath in search_paths) {
 213                                 assembly_resolver.LogSearchMessage ("For searchpath {0}", spath);
 214
 215                                 // The first value of search_paths can be the parent assembly directory.
 216                                 // In that case the value would be treated as a directory.
 217                                 // This code checks if we should treat the value as a TargetFramework assembly.
 218                                 // Doing so avoids CopyLocal beeing set to true.
 219                                 if (spath_index++ == 0 && targetFrameworkDirectories != null) {
 220                                         foreach (string fpath in targetFrameworkDirectories) {
 221                                                 if (String.Compare (
 222                                                                 Path.GetFullPath (spath).TrimEnd (Path.DirectorySeparatorChar),
 223                                                                 Path.GetFullPath (fpath).TrimEnd (Path.DirectorySeparatorChar),
 224                                                                 StringComparison.InvariantCulture) != 0)
 225                                                         continue;
 226
 227                                                 resolved = assembly_resolver.FindInTargetFramework (item,
 228                                                         fpath, specific_version);
 229
 230                                                 break;
 231                                         }
 232
 233                                         if  (resolved != null)
 234                                                 break;
 235                                 }
 236
 237                                 if (String.Compare (spath, "{HintPathFromItem}") == 0) {
 238                                         resolved = assembly_resolver.ResolveHintPathReference (item, specific_version);
 239                                 } else if (String.Compare (spath, "{TargetFrameworkDirectory}") == 0) {
 240                                         if (targetFrameworkDirectories == null)
 241                                                 continue;
 242                                         foreach (string fpath in targetFrameworkDirectories) {
 243                                                 resolved = assembly_resolver.FindInTargetFramework (item,
 244                                                                 fpath, specific_version);
 245                                                 if (resolved != null)
 246                                                         break;
 247                                         }
 248                                 } else if (String.Compare (spath, "{GAC}") == 0) {
 249                                         resolved = assembly_resolver.ResolveGacReference (item, specific_version);
 250                                 } else if (String.Compare (spath, "{RawFileName}") == 0) {
 251                                         //FIXME: identify assembly names, as extract the name, and try with that?
 252                                         AssemblyName aname;
 253                                         if (assembly_resolver.TryGetAssemblyNameFromFile (item.ItemSpec, out aname))
 254                                                 resolved = assembly_resolver.GetResolvedReference (item, item.ItemSpec, aname, true,
 255                                                                 SearchPath.RawFileName);
 256                                 } else if (String.Compare (spath, "{CandidateAssemblyFiles}") == 0) {
 257                                         assembly_resolver.LogSearchMessage (
 258                                                         "Warning: {{CandidateAssemblyFiles}} not supported currently");
 259                                 } else if (String.Compare (spath, "{PkgConfig}") == 0) {
 260                                         resolved = assembly_resolver.ResolvePkgConfigReference (item, specific_version);
 261                                 } else {
 262                                         resolved = assembly_resolver.FindInDirectory (
 263                                                         item, spath,
 264                                                         allowedAssemblyExtensions ?? default_assembly_extensions,
 265                                                         specific_version);
 266                                 }
 267
 268                                 if (resolved != null)
 269                                         break;
 270                         }
 271
 272                         if (resolved != null && set_copy_local)
 273                                 SetCopyLocal (resolved.TaskItem, resolved.CopyLocal.ToString ());
 274
 275                         return resolved;
 276                 }
 277
 278                 bool TryGetSpecificVersionValue (ITaskItem item, out bool specific_version)
 279                 {
 280                         specific_version = true;
 281                         string value = item.GetMetadata ("SpecificVersion");
 282                         if (String.IsNullOrEmpty (value)) {
 283                                 //AssemblyName name = new AssemblyName (item.ItemSpec);
 284                                 // If SpecificVersion is not specified, then
 285                                 // it is true if the Include is a strong name else false
 286                                 //specific_version = assembly_resolver.IsStrongNamed (name);
 287
 288                                 // msbuild seems to just look for a ',' in the name :/
 289                                 specific_version = item.ItemSpec.IndexOf (',') >= 0;
 290                                 return true;
 291                         }
 292
 293                         if (Boolean.TryParse (value, out specific_version))
 294                                 return true;
 295
 296                         Log.LogError ("Item '{0}' has attribute SpecificVersion with invalid value '{1}' " +
 297                                         "which could not be converted to a boolean.", item.ItemSpec, value);
 298                         return false;
 299                 }
 300
 301                 //FIXME: Consider CandidateAssemblyFiles also here
 302                 void ResolveAssemblyFiles ()
 303                 {
 304                         if (assemblyFiles == null)
 305                                 return;
 306
 307                         foreach (ITaskItem item in assemblyFiles) {
 308                                 assembly_resolver.ResetSearchLogger ();
 309
 310                                 if (!File.Exists (item.ItemSpec)) {
 311                                         LogWithPrecedingNewLine (MessageImportance.Low,
 312                                                         "Primary Reference from AssemblyFiles {0}, file not found. Ignoring",
 313                                                         item.ItemSpec);
 314                                         continue;
 315                                 }
 316
 317                                 LogWithPrecedingNewLine (MessageImportance.Low, "Primary Reference from AssemblyFiles {0}", item.ItemSpec);
 318                                 string copy_local;
 319
 320                                 AssemblyName aname;
 321                                 if (!assembly_resolver.TryGetAssemblyNameFromFile (item.ItemSpec, out aname)) {
 322                                         Log.LogWarning ("Reference '{0}' not resolved", item.ItemSpec);
 323                                         assembly_resolver.LogSearchLoggerMessages (MessageImportance.Normal);
 324                                         continue;
 325                                 }
 326
 327                                 assembly_resolver.LogSearchLoggerMessages (MessageImportance.Low);
 328
 329                                 ResolvedReference rr = assembly_resolver.GetResolvedReference (item, item.ItemSpec, aname, true,
 330                                                 SearchPath.RawFileName);
 331                                 copy_local = rr.CopyLocal.ToString ();
 332
 333                                 if (!TryAddNewReference (tempResolvedFiles, rr))
 334                                         // already resolved
 335                                         continue;
 336
 337                                 SetCopyLocal (rr.TaskItem, copy_local);
 338
 339                                 FindAndAddRelatedFiles (item.ItemSpec, copy_local);
 340                                 FindAndAddSatellites (item.ItemSpec, copy_local);
 341
 342                                 if (FindDependencies && !IsFromGacOrTargetFramework (rr) &&
 343                                                 rr.FoundInSearchPath != SearchPath.PkgConfig)
 344                                         primaryReferences.Add (new PrimaryReference (item, copy_local));
 345                         }
 346                 }
 347
 348                 // Tries to resolve assemblies referenced by @item
 349                 // Skips gac references
 350                 // @item : filename
 351                 void ResolveAssemblyFileDependencies (ITaskItem item, string parent_copy_local)
 352                 {
 353                         Queue<string> dependencies = new Queue<string> ();
 354                         dependencies.Enqueue (item.ItemSpec);
 355
 356                         while (dependencies.Count > 0) {
 357                                 string filename = Path.GetFullPath (dependencies.Dequeue ());
 358                                 Assembly asm = Assembly.ReflectionOnlyLoadFrom (filename);
 359                                 if (alreadyScannedAssemblyNames.ContainsKey (asm.FullName))
 360                                         continue;
 361
 362                                 // set the 1st search path to this ref's base path
 363                                 // Will be used for resolving the dependencies
 364                                 dependency_search_paths [0] = Path.GetDirectoryName (filename);
 365
 366                                 foreach (AssemblyName aname in asm.GetReferencedAssemblies ()) {
 367                                         if (alreadyScannedAssemblyNames.ContainsKey (aname.FullName))
 368                                                 continue;
 369
 370                                         ResolvedReference resolved_ref = ResolveDependencyByAssemblyName (
 371                                                 aname, asm.FullName, parent_copy_local);
 372
 373                                         if (IncludeDependencies (resolved_ref, aname.FullName)) {
 374                                                 tempResolvedDepFiles[resolved_ref.AssemblyName.FullName] = resolved_ref.TaskItem;
 375                                                 dependencies.Enqueue (resolved_ref.TaskItem.ItemSpec);
 376                                         }
 377                                 }
 378                                 alreadyScannedAssemblyNames.Add (asm.FullName, String.Empty);
 379                         }
 380                 }
 381
 382                 // Resolves by looking dependency_search_paths
 383                 // which is dir of parent reference file, and
 384                 // SearchPaths
 385                 ResolvedReference ResolveDependencyByAssemblyName (AssemblyName aname, string parent_asm_name,
 386                                 string parent_copy_local)
 387                 {
 388                         // This will check for compatible assembly name/version
 389                         ResolvedReference resolved_ref;
 390                         if (TryGetResolvedReferenceByAssemblyName (aname, false, out resolved_ref))
 391                                 return resolved_ref;
 392
 393                         LogWithPrecedingNewLine (MessageImportance.Low, "Dependency {0}", aname);
 394                         Log.LogMessage (MessageImportance.Low, "\tRequired by {0}", parent_asm_name);
 395
 396                         ITaskItem item = new TaskItem (aname.FullName);
 397                         item.SetMetadata ("SpecificVersion", "false");
 398                         resolved_ref = ResolveReference (item, dependency_search_paths, false);
 399
 400                         if (resolved_ref != null) {
 401                                 Log.LogMessage (MessageImportance.Low, "\tReference {0} resolved to {1}.",
 402                                         aname, resolved_ref.TaskItem.ItemSpec);
 403
 404                                 Log.LogMessage (MessageImportance.Low,
 405                                                 "\tReference found at search path {0}",
 406                                                 resolved_ref.FoundInSearchPathAsString);
 407
 408                                 assembly_resolver.LogSearchLoggerMessages (MessageImportance.Low);
 409
 410                                 if (resolved_ref.FoundInSearchPath == SearchPath.Directory) {
 411                                         // override CopyLocal with parent's val
 412                                         SetCopyLocal (resolved_ref.TaskItem, parent_copy_local);
 413
 414                                         Log.LogMessage (MessageImportance.Low,
 415                                                         "\tThis is CopyLocal {0} as parent item has this value",
 416                                                         parent_copy_local);
 417
 418                                         if (TryAddNewReference (tempResolvedFiles, resolved_ref)) {
 419                                                 FindAndAddRelatedFiles (resolved_ref.TaskItem.ItemSpec, parent_copy_local);
 420                                                 FindAndAddSatellites (resolved_ref.TaskItem.ItemSpec, parent_copy_local);
 421                                         }
 422                                 } else {
 423                                         //gac or tgtfmwk
 424                                         Log.LogMessage (MessageImportance.Low,
 425                                                         "\tThis is CopyLocal false as it is in the GAC," +
 426                                                         "target framework directory or provided by a package.");
 427
 428                                         TryAddNewReference (tempResolvedFiles, resolved_ref);
 429                                 }
 430                         } else {
 431                                 Log.LogMessage (MessageImportance.Low, "Could not resolve the assembly \"{0}\".", aname);
 432                                 assembly_resolver.LogSearchLoggerMessages (MessageImportance.Low);
 433                         }
 434
 435                         return resolved_ref;
 436                 }
 437
 438                 void FindAndAddRelatedFiles (string filename, string parent_copy_local)
 439                 {
 440                         if (!findRelatedFiles || allowedRelatedFileExtensions == null)
 441                                 return;
 442
 443                         foreach (string ext in allowedRelatedFileExtensions) {
 444                                 string rfile = Path.ChangeExtension (filename, ext);
 445                                 if (File.Exists (rfile)) {
 446                                         ITaskItem item = new TaskItem (rfile);
 447                                         SetCopyLocal (item, parent_copy_local);
 448
 449                                         tempRelatedFiles.AddUniqueFile (item);
 450                                 }
 451                         }
 452                 }
 453
 454                 void FindAndAddSatellites (string filename, string parent_copy_local)
 455                 {
 456                         if (!FindSatellites)
 457                                 return;
 458
 459                         string basepath = Path.GetDirectoryName (filename);
 460                         string resource = String.Format ("{0}{1}{2}",
 461                                         Path.GetFileNameWithoutExtension (filename),
 462                                         ".resources",
 463                                         Path.GetExtension (filename));
 464
 465                         string dir_sep = Path.DirectorySeparatorChar.ToString ();
 466                         foreach (string dir in Directory.GetDirectories (basepath)) {
 467                                 string culture = Path.GetFileName (dir);
 468                                 if (!CultureNamesTable.ContainsKey (culture))
 469                                         continue;
 470
 471                                 string res_path = Path.Combine (dir, resource);
 472                                 if (File.Exists (res_path)) {
 473                                         ITaskItem item = new TaskItem (res_path);
 474                                         SetCopyLocal (item, parent_copy_local);
 475                                         item.SetMetadata ("DestinationSubdirectory", culture + dir_sep);
 476                                         tempSatelliteFiles.AddUniqueFile (item);
 477                                 }
 478                         }
 479                 }
 480
 481                 // returns true is it was new
 482                 bool TryAddNewReference (List<ITaskItem> file_list, ResolvedReference key_ref)
 483                 {
 484                         ResolvedReference found_ref;
 485                         if (!TryGetResolvedReferenceByAssemblyName (key_ref.AssemblyName, key_ref.IsPrimary, out found_ref)) {
 486                                 assemblyNameToResolvedRef [key_ref.AssemblyName.Name] = key_ref;
 487                                 file_list.Add (key_ref.TaskItem);
 488
 489                                 return true;
 490                         }
 491                         return false;
 492                 }
 493
 494                 void SetCopyLocal (ITaskItem item, string copy_local)
 495                 {
 496                         item.SetMetadata ("CopyLocal", copy_local);
 497
 498                         // Assumed to be valid value
 499                         if (Boolean.Parse (copy_local))
 500                                 tempCopyLocalFiles.AddUniqueFile (item);
 501                 }
 502
 503                 bool TryGetResolvedReferenceByAssemblyName (AssemblyName key_aname, bool is_primary, out ResolvedReference found_ref)
 504                 {
 505                         found_ref = null;
 506                         // Match by just name
 507                         if (!assemblyNameToResolvedRef.TryGetValue (key_aname.Name, out found_ref))
 508                                 // not there
 509                                 return false;
 510
 511                         // match for full name
 512                         if (AssemblyResolver.AssemblyNamesCompatible (key_aname, found_ref.AssemblyName, true, false))
 513                                 // exact match, so its already there, dont add anything
 514                                 return true;
 515
 516                         // we have a name match, but version mismatch!
 517                         assembly_resolver.LogSearchMessage ("A conflict was detected between '{0}' and '{1}'",
 518                                         key_aname.FullName, found_ref.AssemblyName.FullName);
 519
 520                         if (is_primary == found_ref.IsPrimary) {
 521                                 assembly_resolver.LogSearchMessage ("Unable to choose between the two. " +
 522                                                 "Choosing '{0}' arbitrarily.", found_ref.AssemblyName.FullName);
 523                                 return true;
 524                         }
 525
 526                         // since all dependencies are processed after
 527                         // all primary refererences, the one in the cache
 528                         // has to be a primary
 529                         // Prefer a primary reference over a dependency
 530
 531                         assembly_resolver.LogSearchMessage ("Choosing '{0}' as it is a primary reference.",
 532                                         found_ref.AssemblyName.FullName);
 533
 534                         // If we can successfully use the primary reference, don't log a warning. It's too
 535                         // verbose.
 536                         //LogConflictWarning (found_ref.AssemblyName.FullName, key_aname.FullName);
 537
 538                         return true;
 539                 }
 540
 541                 void LogWithPrecedingNewLine (MessageImportance importance, string format, params object [] args)
 542                 {
 543                         Log.LogMessage (importance, String.Empty);
 544                         Log.LogMessage (importance, format, args);
 545                 }
 546
 547                 // conflict b/w @main and @conflicting, picking @main
 548                 void LogConflictWarning (string main, string conflicting)
 549                 {
 550                         string key = main + ":" + conflicting;
 551                         if (!conflictWarningsCache.ContainsKey (key)) {
 552                                 Log.LogWarning ("Found a conflict between : '{0}' and '{1}'. Using '{0}' reference.",
 553                                                 main, conflicting);
 554                                 conflictWarningsCache [key] = key;
 555                         }
 556                 }
 557
 558                 bool IsFromGacOrTargetFramework (ResolvedReference rr)
 559                 {
 560                         return rr.FoundInSearchPath == SearchPath.Gac ||
 561                                 rr.FoundInSearchPath == SearchPath.TargetFrameworkDirectory;
 562                 }
 563
 564                 bool IncludeDependencies (ResolvedReference rr, string aname)
 565                 {
 566                         if (rr == null)
 567                                 return false;
 568                         if (aname.Equals ("System.Runtime, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a"))
 569                                 return true;
 570                         return !IsFromGacOrTargetFramework (rr) && rr.FoundInSearchPath != SearchPath.PkgConfig;
 571                 }
 572
 573                 void LogTaskParameters ()
 574                 {
 575                         Log.LogMessage (MessageImportance.Low, "TargetFrameworkDirectories:");
 576                         if (TargetFrameworkDirectories != null)
 577                                 foreach (string dir in TargetFrameworkDirectories)
 578                                         Log.LogMessage (MessageImportance.Low, "\t{0}", dir);
 579
 580                         Log.LogMessage (MessageImportance.Low, "SearchPaths:");
 581                         if (SearchPaths != null)
 582                                 foreach (string path in SearchPaths)
 583                                         Log.LogMessage (MessageImportance.Low, "\t{0}", path);
 584                 }
 585
 586                 public bool AutoUnify {
 587                         get { return autoUnify; }
 588                         set { autoUnify = value; }
 589                 }
 590
 591                 public ITaskItem[] AssemblyFiles {
 592                         get { return assemblyFiles; }
 593                         set { assemblyFiles = value; }
 594                 }
 595
 596                 public ITaskItem[] Assemblies {
 597                         get { return assemblies; }
 598                         set { assemblies = value; }
 599                 }
 600
 601                 public string AppConfigFile {
 602                         get { return appConfigFile; }
 603                         set { appConfigFile = value; }
 604                 }
 605
 606                 public string[] AllowedAssemblyExtensions {
 607                         get { return allowedAssemblyExtensions; }
 608                         set { allowedAssemblyExtensions = value; }
 609                 }
 610
 611                 public string[] AllowedRelatedFileExtensions {
 612                         get { return allowedRelatedFileExtensions; }
 613                         set { allowedRelatedFileExtensions = value; }
 614                 }
 615
 616                 public string[] CandidateAssemblyFiles {
 617                         get { return candidateAssemblyFiles; }
 618                         set { candidateAssemblyFiles = value; }
 619                 }
 620
 621                 [Output]
 622                 public ITaskItem[] CopyLocalFiles {
 623                         get { return copyLocalFiles; }
 624                 }
 625
 626                 [Output]
 627                 public ITaskItem[] FilesWritten {
 628                         get { return filesWritten; }
 629                         set { filesWritten = value; }
 630                 }
 631
 632                 public bool FindDependencies {
 633                         get { return findDependencies; }
 634                         set { findDependencies = value; }
 635                 }
 636
 637                 public bool FindRelatedFiles {
 638                         get { return findRelatedFiles; }
 639                         set { findRelatedFiles = value; }
 640                 }
 641
 642                 public bool FindSatellites {
 643                         get { return findSatellites; }
 644                         set { findSatellites = value; }
 645                 }
 646
 647                 public bool FindSerializationAssemblies {
 648                         get { return findSerializationAssemblies; }
 649                         set { findSerializationAssemblies = value; }
 650                 }
 651
 652                 public
 653                 ITaskItem[]
 654                 InstalledAssemblyTables { get; set; }
 655
 656                 [Output]
 657                 public ITaskItem[] RelatedFiles {
 658                         get { return relatedFiles; }
 659                 }
 660
 661                 [Output]
 662                 public ITaskItem[] ResolvedDependencyFiles {
 663                         get { return resolvedDependencyFiles; }
 664                 }
 665
 666                 [Output]
 667                 public ITaskItem[] ResolvedFiles {
 668                         get { return resolvedFiles; }
 669                 }
 670
 671                 [Output]
 672                 public ITaskItem[] SatelliteFiles {
 673                         get { return satelliteFiles; }
 674                 }
 675
 676                 [Output]
 677                 public ITaskItem[] ScatterFiles {
 678                         get { return scatterFiles; }
 679                 }
 680
 681                 [Required]
 682                 public string[] SearchPaths {
 683                         get { return searchPaths; }
 684                         set { searchPaths = value; }
 685                 }
 686
 687                 [Output]
 688                 public ITaskItem[] SerializationAssemblyFiles {
 689                         get { return serializationAssemblyFiles; }
 690                 }
 691
 692                 public bool Silent {
 693                         get { return silent; }
 694                         set { silent = value; }
 695                 }
 696
 697                 public string StateFile {
 698                         get { return stateFile; }
 699                         set { stateFile = value; }
 700                 }
 701
 702                 [Output]
 703                 public ITaskItem[] SuggestedRedirects {
 704                         get { return suggestedRedirects; }
 705                 }
 706
 707                 public string TargetFrameworkMoniker { get; set; }
 708
 709                 public string TargetFrameworkMonikerDisplayName { get; set; }
 710
 711                 public string TargetFrameworkVersion { get; set; }
 712
 713                 public string[] TargetFrameworkDirectories {
 714                         get { return targetFrameworkDirectories; }
 715                         set { targetFrameworkDirectories = value; }
 716                 }
 717
 718                 public string TargetProcessorArchitecture {
 719                         get { return targetProcessorArchitecture; }
 720                         set { targetProcessorArchitecture = value; }
 721                 }
 722
 723
 724                 static Dictionary<string, string> cultureNamesTable;
 725                 static Dictionary<string, string> CultureNamesTable {
 726                         get {
 727                                 if (cultureNamesTable == null) {
 728                                         cultureNamesTable = new Dictionary<string, string> ();
 729                                         foreach (CultureInfo ci in CultureInfo.GetCultures (CultureTypes.AllCultures))
 730                                                 cultureNamesTable [ci.Name] = ci.Name;
 731                                 }
 732
 733                                 return cultureNamesTable;
 734                         }
 735                 }
 736         }
 737
 738         static class ResolveAssemblyReferenceHelper {
 739                 public static void AddUniqueFile (this Dictionary<string, ITaskItem> dic, ITaskItem item)
 740                 {
 741                         if (dic == null)
 742                                 throw new ArgumentNullException ("dic");
 743                         if (item == null)
 744                                 throw new ArgumentNullException ("item");
 745
 746                         string fullpath = Path.GetFullPath (item.ItemSpec);
 747                         if (!dic.ContainsKey (fullpath))
 748                                 dic [fullpath] = item;
 749                 }
 750         }
 751
 752         struct PrimaryReference {
 753                 public ITaskItem TaskItem;
 754                 public string ParentCopyLocal;
 755
 756                 public PrimaryReference (ITaskItem item, string parent_copy_local)
 757                 {
 758                         TaskItem = item;
 759                         ParentCopyLocal = parent_copy_local;
 760                 }
 761         }
 762
 763 }