mcs/class/System.Web/System.Web.Compilation/AppResourcesCompiler.cs

   1 //
   2 // System.Web.Compilation.AppResourceFilesCollection
   3 //
   4 // Authors:
   5 //   Marek Habersack (grendello@gmail.com)
   6 //
   7 // (C) 2006 Marek Habersack
   8 //
   9
  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 #if NET_2_0
  31 using System;
  32 using System.CodeDom;
  33 using System.CodeDom.Compiler;
  34 using System.Collections;
  35 using System.Collections.Generic;
  36 using System.Globalization;
  37 using System.IO;
  38 using System.Reflection;
  39 using System.Resources;
  40 using System.Web;
  41 using System.Web.Caching;
  42 using System.Web.Configuration;
  43 using System.Web.Util;
  44
  45 namespace System.Web.Compilation
  46 {
  47         internal class AppResourcesCompiler
  48         {
  49                 const string cachePrefix = "@@LocalResourcesAssemblies";
  50
  51                 bool isGlobal;
  52                 HttpContext context;
  53                 AppResourceFilesCollection files;
  54                 string tempDirectory;
  55                 string virtualPath;
  56
  57                 string TempDirectory {
  58                         get {
  59                                 if (tempDirectory != null)
  60                                         return tempDirectory;
  61                                 return (tempDirectory = AppDomain.CurrentDomain.SetupInformation.DynamicBase);
  62                         }
  63                 }
  64
  65                 public AppResourcesCompiler (HttpContext context)
  66                 {
  67                         this.context = context;
  68                         this.isGlobal = true;
  69                         this.files = new AppResourceFilesCollection (context);
  70                 }
  71
  72                 public AppResourcesCompiler (string virtualPath)
  73                 {
  74
  75                         this.virtualPath = virtualPath;
  76                         this.isGlobal = false;
  77                         this.files = new AppResourceFilesCollection (HttpContext.Current.Request.MapPath (virtualPath));
  78                 }
  79
  80                 public Assembly Compile ()
  81                 {
  82                         files.Collect ();
  83                         if (!files.HasFiles)
  84                                 return null;
  85                         if (isGlobal)
  86                                 return CompileGlobal ();
  87                         else
  88                                 return CompileLocal ();
  89                 }
  90
  91                 Assembly CompileGlobal ()
  92                 {
  93                         string assemblyPath = FileUtils.CreateTemporaryFile (TempDirectory,
  94                                                                              "App_GlobalResources",
  95                                                                              "dll",
  96                                                                              OnCreateRandomFile) as string;
  97
  98                         if (assemblyPath == null)
  99                                 throw new ApplicationException ("Failed to create global resources assembly");
 100
 101                         CompilationSection config = WebConfigurationManager.GetSection ("system.web/compilation") as CompilationSection;
 102                         if (config == null || !CodeDomProvider.IsDefinedLanguage (config.DefaultLanguage))
 103                                 throw new ApplicationException ("Could not get the default compiler.");
 104                         CompilerInfo ci = CodeDomProvider.GetCompilerInfo (config.DefaultLanguage);
 105                         if (ci == null || !ci.IsCodeDomProviderTypeValid)
 106                                 throw new ApplicationException ("Failed to obtain the default compiler information.");
 107
 108                         CompilerParameters cp = ci.CreateDefaultCompilerParameters ();
 109                         cp.OutputAssembly = assemblyPath;
 110                         cp.GenerateExecutable = false;
 111                         cp.TreatWarningsAsErrors = true;
 112                         cp.IncludeDebugInformation = config.Debug;
 113
 114                         List <string>[] fileGroups = GroupGlobalFiles (cp);
 115                         if (fileGroups == null || fileGroups.Length == 0)
 116                                 return null;
 117
 118                         CodeCompileUnit unit = new CodeCompileUnit ();
 119                         CodeNamespace ns = new CodeNamespace (null);
 120                         ns.Imports.Add (new CodeNamespaceImport ("System"));
 121                         ns.Imports.Add (new CodeNamespaceImport ("System.Globalization"));
 122                         ns.Imports.Add (new CodeNamespaceImport ("System.Reflection"));
 123                         ns.Imports.Add (new CodeNamespaceImport ("System.Resources"));
 124                         unit.Namespaces.Add (ns);
 125
 126                         CodeDomProvider provider;
 127                         provider = ci.CreateProvider ();
 128                         if (provider == null)
 129                                 throw new ApplicationException ("Failed to instantiate the default compiler.");
 130
 131                         Dictionary <string,bool> assemblies = new Dictionary<string,bool> ();
 132                         foreach (List<string> ls in fileGroups)
 133                                 DomFromResource (ls [0], unit, assemblies, provider);
 134                         foreach (KeyValuePair<string,bool> de in assemblies)
 135                                 unit.ReferencedAssemblies.Add (de.Key);
 136
 137                         AssemblyBuilder abuilder = new AssemblyBuilder (provider);
 138                         abuilder.AddCodeCompileUnit (unit);
 139
 140                         CompilerResults results = abuilder.BuildAssembly (cp);
 141                         Assembly ret = null;
 142
 143                         if (results.Errors.Count == 0) {
 144                                 ret = results.CompiledAssembly;
 145                                 BuildManager.TopLevelAssemblies.Add (ret);
 146                                 HttpContext.AppGlobalResourcesAssembly = ret;
 147                         } else {
 148                                 if (context.IsCustomErrorEnabled)
 149                                         throw new ApplicationException ("An error occurred while compiling global resources.");
 150                                 throw new CompilationException (null, results.Errors, null);
 151                         }
 152                         HttpRuntime.WritePreservationFile (ret, "App_GlobalResources");
 153                         HttpRuntime.EnableAssemblyMapping (true);
 154
 155                         return ret;
 156                 }
 157
 158                 Assembly CompileLocal ()
 159                 {
 160                         if (String.IsNullOrEmpty (virtualPath))
 161                                 return null;
 162
 163                         Assembly cached = GetCachedLocalResourcesAssembly (virtualPath);
 164                         if (cached != null)
 165                                 return cached;
 166
 167                         string prefix;
 168                         if (virtualPath == "/")
 169                                 prefix = "App_LocalResources.root";
 170                         else
 171                                 prefix = "App_LocalResources" + virtualPath.Replace ('/', '.');
 172
 173                         string assemblyPath = FileUtils.CreateTemporaryFile (TempDirectory,
 174                                                                              prefix,
 175                                                                              "dll",
 176                                                                              OnCreateRandomFile) as string;
 177                         if (assemblyPath == null)
 178                                 throw new ApplicationException ("Failed to create global resources assembly");
 179
 180                         CompilationSection config = WebConfigurationManager.GetSection ("system.web/compilation") as CompilationSection;
 181                         if (config == null || !CodeDomProvider.IsDefinedLanguage (config.DefaultLanguage))
 182                                 throw new ApplicationException ("Could not get the default compiler.");
 183                         CompilerInfo ci = CodeDomProvider.GetCompilerInfo (config.DefaultLanguage);
 184                         if (ci == null || !ci.IsCodeDomProviderTypeValid)
 185                                 throw new ApplicationException ("Failed to obtain the default compiler information.");
 186
 187                         CompilerParameters cp = ci.CreateDefaultCompilerParameters ();
 188                         cp.OutputAssembly = assemblyPath;
 189                         cp.GenerateExecutable = false;
 190                         cp.TreatWarningsAsErrors = true;
 191                         cp.IncludeDebugInformation = config.Debug;
 192
 193                         List<AppResourceFileInfo> files = this.files.Files;
 194                         foreach (AppResourceFileInfo arfi in files)
 195                                 GetResourceFile (arfi, cp);
 196
 197                         CodeDomProvider provider;
 198                         provider = ci.CreateProvider ();
 199                         if (provider == null)
 200                                 throw new ApplicationException ("Failed to instantiate the default compiler.");
 201
 202                         AssemblyBuilder abuilder = new AssemblyBuilder (provider);
 203                         CompilerResults results = abuilder.BuildAssembly (cp);
 204                         Assembly ret = null;
 205
 206                         if (results.Errors.Count == 0) {
 207                                 ret = results.CompiledAssembly;
 208                                 AddAssemblyToCache (virtualPath, ret);
 209                         } else {
 210                                 if (context.IsCustomErrorEnabled)
 211                                         throw new ApplicationException ("An error occurred while compiling global resources.");
 212                                 throw new CompilationException (null, results.Errors, null);
 213                         }
 214
 215                         return ret;
 216                 }
 217
 218                 internal static Assembly GetCachedLocalResourcesAssembly (string path)
 219                 {
 220                         Dictionary <string, Assembly> cache;
 221
 222                         cache = HttpRuntime.Cache[cachePrefix] as Dictionary <string, Assembly>;
 223                         if (cache == null || !cache.ContainsKey (path))
 224                                 return null;
 225                         return cache [path];
 226                 }
 227
 228                 void AddAssemblyToCache (string path, Assembly asm)
 229                 {
 230                         Cache runtimeCache = HttpRuntime.Cache;
 231                         Dictionary <string, Assembly> cache;
 232
 233                         cache = runtimeCache[cachePrefix] as Dictionary <string, Assembly>;
 234                         if (cache == null)
 235                                 cache = new Dictionary <string, Assembly> ();
 236                         cache [path] = asm;
 237                         runtimeCache.Insert (cachePrefix, cache);
 238                 }
 239
 240                 uint CountChars (char c, string s)
 241                 {
 242                         uint ret = 0;
 243                         foreach (char ch in s) {
 244                                 if (ch == c)
 245                                         ret++;
 246                         }
 247                         return ret;
 248                 }
 249
 250                 bool IsFileCultureValid (string fileName)
 251                 {
 252                     string tmp = Path.GetFileNameWithoutExtension (fileName);
 253                     tmp = Path.GetExtension (tmp);
 254                     if (tmp != null && tmp.Length > 0) {
 255                               tmp = tmp.Substring (1);
 256                             try {
 257                                 CultureInfo.GetCultureInfo (tmp);
 258                                 return true;
 259                             } catch {
 260                                 return false;
 261                             }
 262                     }
 263                     return false;
 264                 }
 265
 266                 string GetResourceFile (AppResourceFileInfo arfi, CompilerParameters cp)
 267                 {
 268                         string resfile;
 269                         if (arfi.Kind == AppResourceFileKind.ResX)
 270                                 resfile = CompileResource (arfi);
 271                         else
 272                                 resfile = arfi.Info.FullName;
 273                         if (!String.IsNullOrEmpty (resfile))
 274                                 cp.EmbeddedResources.Add (resfile);
 275                         return resfile;
 276                 }
 277
 278                 List <string>[] GroupGlobalFiles (CompilerParameters cp)
 279                 {
 280                         List<AppResourceFileInfo> files = this.files.Files;
 281                         List<List<string>> groups = new List<List<string>> ();
 282                         AppResourcesLengthComparer<List<string>> lcList = new AppResourcesLengthComparer<List<string>> ();
 283
 284                         string tmp, s, basename;
 285                         uint basedots, filedots;
 286                         AppResourceFileInfo defaultFile;
 287
 288                         foreach (AppResourceFileInfo arfi in files) {
 289                                 if (arfi.Kind != AppResourceFileKind.ResX && arfi.Kind != AppResourceFileKind.Resource)
 290                                         continue;
 291
 292                                 s = arfi.Info.FullName;
 293                                 basename = Path.GetFileNameWithoutExtension (s);
 294                                 basedots = CountChars ('.', basename);
 295                                 defaultFile = null;
 296
 297                                 // If there are any files that start with this baseName, we have a default file
 298                                 foreach (AppResourceFileInfo fi in files) {
 299                                         if (fi.Seen)
 300                                                 continue;
 301
 302                                         string s2 = fi.Info.FullName;
 303                                         if (s2 == null || s == s2)
 304                                                 continue;
 305                                         tmp = Path.GetFileNameWithoutExtension (s2);
 306                                         filedots = CountChars ('.', tmp);
 307
 308                                         if (filedots == basedots + 1 && tmp.StartsWith (basename)) {
 309                                                 if (IsFileCultureValid (s2)) {
 310                                                         // A valid translated file for this name
 311                                                         defaultFile = arfi;
 312                                                         break;
 313                                                 } else {
 314                                                         // This file shares the base name, but the culture is invalid - we must
 315                                                         // ignore it since the name of the generated strongly typed class for this
 316                                                         // resource will clash with the one generated from the default file with
 317                                                         // the given basename.
 318                                                         fi.Seen = true;
 319                                                 }
 320                                         }
 321                                 }
 322                                 if (defaultFile != null) {
 323                                         List<string> al = new List<string> ();
 324                                         al.Add (GetResourceFile (arfi, cp));
 325                                         arfi.Seen = true;
 326                                         groups.Add (al);
 327
 328                                 }
 329                         }
 330                         groups.Sort (lcList);
 331
 332                         string tmp2;
 333                         // Now find their translated counterparts
 334                         foreach (List<string> al in groups) {
 335                                 s = al [0];
 336                                 tmp = Path.GetFileNameWithoutExtension (s);
 337                                 foreach (AppResourceFileInfo arfi in files) {
 338                                         if (arfi.Seen)
 339                                                 continue;
 340
 341                                         s = arfi.Info.FullName;
 342                                         if (s == null)
 343                                                 continue;
 344                                         tmp2 = arfi.Info.Name;
 345                                         if (tmp2.StartsWith (tmp)) {
 346                                                 al.Add (GetResourceFile (arfi, cp));
 347                                                 arfi.Seen = true;
 348                                         }
 349                                 }
 350                         }
 351
 352                         // Anything that's left here might be orphans or lone default files.
 353                         // For those files we check the part following the last dot
 354                         // before the .resx/.resource extensions and test whether it's a registered
 355                         // culture or not. If it is not a culture, then we have a
 356                         // default file that doesn't have any translations. Otherwise,
 357                         // the file is ignored (it's the same thing MS.NET does)
 358                         foreach (AppResourceFileInfo arfi in files) {
 359                                 if (arfi.Seen)
 360                                         continue;
 361
 362                                 if (IsFileCultureValid (arfi.Info.FullName))
 363                                         continue; // Culture found, we reject the file
 364
 365                                 // A single default file, create a group
 366                                 List<string> al = new List<string> ();
 367                                 al.Add (GetResourceFile (arfi, cp));
 368                                 groups.Add (al);
 369                         }
 370                         groups.Sort (lcList);
 371                         return groups.ToArray ();
 372                 }
 373
 374                 // CodeDOM generation
 375                 void DomFromResource (string resfile, CodeCompileUnit unit, Dictionary <string,bool> assemblies,
 376                                       CodeDomProvider provider)
 377                 {
 378                         if (String.IsNullOrEmpty (resfile))
 379                                 return;
 380
 381                         string fname, nsname, classname;
 382
 383                         fname = Path.GetFileNameWithoutExtension (resfile);
 384                         nsname = Path.GetFileNameWithoutExtension (fname);
 385                         classname = Path.GetExtension (fname);
 386                         if (classname == null || classname.Length == 0) {
 387                                 classname = nsname;
 388                                 nsname = "Resources";
 389                         } else {
 390                                 if (!nsname.StartsWith ("Resources", StringComparison.InvariantCulture))
 391                                         nsname = String.Format ("Resources.{0}", nsname);
 392                                 classname = classname.Substring(1);
 393                         }
 394
 395                         if (!provider.IsValidIdentifier (nsname) || !provider.IsValidIdentifier (classname))
 396                                 throw new ApplicationException ("Invalid resource file name.");
 397
 398                         ResourceReader res;
 399                         try {
 400                                 res = new ResourceReader (resfile);
 401                         } catch (ArgumentException) {
 402                                 // invalid stream, probably empty - ignore silently and abort
 403                                 return;
 404                         }
 405
 406                         CodeNamespace ns = new CodeNamespace (nsname);
 407                         CodeTypeDeclaration cls = new CodeTypeDeclaration (classname);
 408                         cls.IsClass = true;
 409                         cls.TypeAttributes = TypeAttributes.Public | TypeAttributes.Sealed;
 410
 411                         CodeMemberField cmf = new CodeMemberField (typeof(CultureInfo), "culture");
 412                         cmf.InitExpression = new CodePrimitiveExpression (null);
 413                         cmf.Attributes = MemberAttributes.Private | MemberAttributes.Final | MemberAttributes.Static;
 414                         cls.Members.Add (cmf);
 415
 416                         cmf = new CodeMemberField (typeof(ResourceManager), "resourceManager");
 417                         cmf.InitExpression = new CodePrimitiveExpression (null);
 418                         cmf.Attributes = MemberAttributes.Private | MemberAttributes.Final | MemberAttributes.Static;
 419                         cls.Members.Add (cmf);
 420
 421                         // Property: ResourceManager
 422                         CodeMemberProperty cmp = new CodeMemberProperty ();
 423                         cmp.Attributes = MemberAttributes.Public | MemberAttributes.Final | MemberAttributes.Static;
 424                         cmp.Name = "ResourceManager";
 425                         cmp.HasGet = true;
 426                         cmp.Type = new CodeTypeReference (typeof(ResourceManager));
 427                         CodePropertyResourceManagerGet (cmp.GetStatements, resfile, classname);
 428                         cls.Members.Add (cmp);
 429
 430                         // Property: Culture
 431                         cmp = new CodeMemberProperty ();
 432                         cmp.Attributes = MemberAttributes.Public | MemberAttributes.Final;
 433                         cmp.Attributes = MemberAttributes.Public | MemberAttributes.Final | MemberAttributes.Static;
 434                         cmp.Name = "Culture";
 435                         cmp.HasGet = true;
 436                         cmp.HasSet = true;
 437                         cmp.Type = new CodeTypeReference (typeof(CultureInfo));
 438                         CodePropertyGenericGet (cmp.GetStatements, "culture", classname);
 439                         CodePropertyGenericSet (cmp.SetStatements, "culture", classname);
 440                         cls.Members.Add (cmp);
 441
 442                         // Add the resource properties
 443                         Dictionary<string,bool> imports = new Dictionary<string,bool> ();
 444                         try {
 445                                 foreach (DictionaryEntry de in res) {
 446                                         Type type = de.Value.GetType ();
 447
 448                                         if (!imports.ContainsKey (type.Namespace))
 449                                                 imports [type.Namespace] = true;
 450
 451                                         string asname = new AssemblyName (type.Assembly.FullName).Name;
 452                                         if (!assemblies.ContainsKey (asname))
 453                                                 assemblies [asname] = true;
 454
 455                                         cmp = new CodeMemberProperty ();
 456                                         cmp.Attributes = MemberAttributes.Public | MemberAttributes.Final | MemberAttributes.Static;
 457                                         cmp.Name = SanitizeResourceName ((string)de.Key);
 458                                         cmp.HasGet = true;
 459                                         CodePropertyResourceGet (cmp.GetStatements, (string)de.Key, type, classname);
 460                                         cmp.Type = new CodeTypeReference (type);
 461                                         cls.Members.Add (cmp);
 462                                 }
 463                         } catch (Exception ex) {
 464                                 throw new ApplicationException ("Failed to compile global resources.", ex);
 465                         }
 466                         foreach (KeyValuePair<string,bool> de in imports)
 467                                 ns.Imports.Add (new CodeNamespaceImport(de.Key));
 468
 469                         ns.Types.Add (cls);
 470                         unit.Namespaces.Add (ns);
 471                 }
 472
 473                 string SanitizeResourceName (string name)
 474                 {
 475                         return name.Replace (' ', '_').Replace ('-', '_').Replace ('.', '_');
 476                 }
 477
 478                 CodeObjectCreateExpression NewResourceManager (string name, string typename)
 479                 {
 480                         CodeExpression resname = new CodePrimitiveExpression (name);
 481                         CodePropertyReferenceExpression asm = new CodePropertyReferenceExpression (
 482                                 new CodeTypeOfExpression (new CodeTypeReference (typename)),
 483                                 "Assembly");
 484
 485                         return new CodeObjectCreateExpression ("System.Resources.ResourceManager",
 486                                                                new CodeExpression [] {resname, asm});
 487                 }
 488
 489                 void CodePropertyResourceManagerGet (CodeStatementCollection csc, string resfile, string typename)
 490                 {
 491                         string name = Path.GetFileNameWithoutExtension (resfile);
 492                         CodeStatement st;
 493                         CodeExpression exp;
 494
 495                         exp = new CodeFieldReferenceExpression (new CodeTypeReferenceExpression (typename), "resourceManager");
 496                         st = new CodeConditionStatement (
 497                                 new CodeBinaryOperatorExpression (
 498                                         exp,
 499                                         CodeBinaryOperatorType.IdentityInequality,
 500                                         new CodePrimitiveExpression (null)),
 501                                 new CodeStatement [] { new CodeMethodReturnStatement (exp) });
 502                         csc.Add (st);
 503
 504                         st = new CodeAssignStatement (exp, NewResourceManager (name, typename));
 505                         csc.Add (st);
 506                         csc.Add (new CodeMethodReturnStatement (exp));
 507                 }
 508
 509                 void CodePropertyResourceGet (CodeStatementCollection csc, string resname, Type restype, string typename)
 510                 {
 511                         CodeStatement st = new CodeVariableDeclarationStatement (
 512                                 typeof (ResourceManager),
 513                                 "rm",
 514                                 new CodePropertyReferenceExpression (
 515                                         new CodeTypeReferenceExpression (typename), "ResourceManager"));
 516                         csc.Add (st);
 517
 518                         st = new CodeConditionStatement (
 519                                 new CodeBinaryOperatorExpression (
 520                                         new CodeVariableReferenceExpression ("rm"),
 521                                         CodeBinaryOperatorType.IdentityEquality,
 522                                         new CodePrimitiveExpression (null)),
 523                                 new CodeStatement [] { new CodeMethodReturnStatement (new CodePrimitiveExpression (null)) });
 524                         csc.Add (st);
 525
 526                         bool gotstr = (restype == typeof (string));
 527                         CodeExpression exp = new CodeMethodInvokeExpression (
 528                                 new CodeVariableReferenceExpression ("rm"),
 529                                 gotstr ? "GetString" : "GetObject",
 530                                 new CodeExpression [] { new CodePrimitiveExpression (resname),
 531                                                         new CodeFieldReferenceExpression (
 532                                                                 new CodeTypeReferenceExpression (typename), "culture") });
 533                         st = new CodeVariableDeclarationStatement (
 534                                 restype,
 535                                 "obj",
 536                                 gotstr ? exp : new CodeCastExpression (restype, exp));
 537                         csc.Add (st);
 538                         csc.Add (new CodeMethodReturnStatement (new CodeVariableReferenceExpression ("obj")));
 539                 }
 540
 541                 void CodePropertyGenericGet (CodeStatementCollection csc, string field, string typename)
 542                 {
 543                         csc.Add(new CodeMethodReturnStatement (
 544                                         new CodeFieldReferenceExpression (
 545                                                 new CodeTypeReferenceExpression (typename), field)));
 546                 }
 547
 548                 void CodePropertyGenericSet (CodeStatementCollection csc, string field, string typename)
 549                 {
 550                         csc.Add(new CodeAssignStatement (
 551                                         new CodeFieldReferenceExpression (new CodeTypeReferenceExpression (typename), field),
 552                                         new CodeVariableReferenceExpression ("value")));
 553                 }
 554
 555                 string CompileResource (AppResourceFileInfo arfi)
 556                 {
 557                         string path = arfi.Info.FullName;
 558                         string resource = Path.Combine (TempDirectory,
 559                                                         "Resources." + Path.GetFileNameWithoutExtension (path) + ".resources");
 560                         FileStream source = null, destination = null;
 561                         IResourceReader reader = null;
 562                         ResourceWriter writer = null;
 563
 564                         try {
 565                                 source = new FileStream (path, FileMode.Open, FileAccess.Read);
 566                                 destination = new FileStream (resource, FileMode.Create, FileAccess.Write);
 567                                 reader = GetReaderForKind (arfi.Kind, source);
 568                                 writer = new ResourceWriter (destination);
 569                                 foreach (DictionaryEntry de in reader) {
 570                                         object val = de.Value;
 571                                         if (val is string)
 572                                                 writer.AddResource ((string)de.Key, (string)val);
 573                                         else
 574                                                 writer.AddResource ((string)de.Key, val);
 575                                 }
 576                         } catch (Exception ex) {
 577                                 throw new HttpException ("Failed to compile resource file", ex);
 578                         } finally {
 579                                 if (reader != null)
 580                                         reader.Close ();
 581                                 else if (source != null)
 582                                         source.Close ();
 583                                 if (writer != null)
 584                                         writer.Close ();
 585                                 else if (destination != null)
 586                                         destination.Close ();
 587                         }
 588
 589                         return resource;
 590                 }
 591
 592                 IResourceReader GetReaderForKind (AppResourceFileKind kind, Stream stream)
 593                 {
 594                         switch (kind) {
 595                                 case AppResourceFileKind.ResX:
 596                                         return new ResXResourceReader (stream);
 597
 598                                 case AppResourceFileKind.Resource:
 599                                         return new ResourceReader (stream);
 600
 601                                 default:
 602                                         return null;
 603                         }
 604                 }
 605
 606
 607                 object OnCreateRandomFile (string path)
 608                 {
 609                         FileStream f = new FileStream (path, FileMode.CreateNew);
 610                         f.Close ();
 611                         return path;
 612                 }
 613         };
 614 };
 615 #endif