private CacheEntry <MetadataShadowCopy> CreateMetadataShadowCopy(string originalPath, MetadataImageKind kind)
{
int attempts = 10;
while (true)
{
try
{
if (ShadowCopyDirectory == null)
{
ShadowCopyDirectory = CreateUniqueDirectory(baseDirectory);
}
// Create directory for the assembly.
// If the assembly has any modules they have to be copied to the same directory
// and have the same names as specified in metadata.
string assemblyDir = CreateUniqueDirectory(ShadowCopyDirectory);
string shadowCopyPath = Path.Combine(assemblyDir, Path.GetFileName(originalPath));
var manifestModuleCopy = CopyFile(originalPath, shadowCopyPath);
Debug.Assert(manifestModuleCopy != null);
ShadowCopy documentationFileCopy = null;
string xmlDocumentationFilePath;
if (TryFindXmlDocumentationFile(originalPath, out xmlDocumentationFilePath))
{
// TODO (tomat): how do doc comments work for multi-module assembly?
var xmlShadowCopyPath = Path.ChangeExtension(shadowCopyPath, ".xml");
documentationFileCopy = CopyFile(xmlDocumentationFilePath, xmlShadowCopyPath, fileMayNotExist: true);
}
Metadata privateMetadata;
if (kind == MetadataImageKind.Assembly)
{
privateMetadata = CreateAssemblyMetadata(manifestModuleCopy);
}
else
{
privateMetadata = CreateModuleMetadata(manifestModuleCopy);
}
var publicMetadata = privateMetadata.Copy();
return(new CacheEntry <MetadataShadowCopy>(new MetadataShadowCopy(manifestModuleCopy, documentationFileCopy, publicMetadata), privateMetadata));
}
catch (DirectoryNotFoundException)
{
// the shadow copy directory has been deleted - try to copy all files again
if (!Directory.Exists(ShadowCopyDirectory))
{
ShadowCopyDirectory = null;
if (attempts-- > 0)
{
continue;
}
}
throw;
}
}
}
internal MetadataShadowCopy(ShadowCopy primaryModule, ShadowCopy documentationFile, Metadata metadataCopy)
{
Debug.Assert(primaryModule != null);
Debug.Assert(metadataCopy != null);
Debug.Assert(!metadataCopy.IsImageOwner);
this.primaryModule = primaryModule;
this.documentationFile = documentationFile;
this.metadataCopy = metadataCopy;
}
internal MetadataShadowCopy(ShadowCopy primaryModule, ShadowCopy documentationFile, Metadata metadataCopy)
{
Debug.Assert(primaryModule != null);
Debug.Assert(metadataCopy != null);
Debug.Assert(!metadataCopy.IsImageOwner);
this.primaryModule = primaryModule;
this.documentationFile = documentationFile;
this.metadataCopy = metadataCopy;
}
private static ModuleMetadata CreateModuleMetadata(ShadowCopy copy)
{
try
{
return(new ModuleMetadata(copy.FullPath, copy.Stream.SafeFileHandle));
}
finally
{
// close the file handle, it's now memory mapped and locked:
copy.DisposeFileStream();
}
}
private AssemblyMetadata CreateAssemblyMetadata(ShadowCopy manifestModuleCopy)
{
// We don't need to use the global metadata cache here since the shadow copy
// won't change and is private to us - only users of the same shadow copy provider see it.
ArrayBuilder <ModuleMetadata> moduleBuilder = null;
bool fault = true;
ModuleMetadata manifestModule = null;
try
{
manifestModule = CreateModuleMetadata(manifestModuleCopy);
string originalDirectory = null, shadowCopyDirectory = null;
foreach (string moduleName in manifestModule.GetModuleNames())
{
if (moduleBuilder == null)
{
moduleBuilder = ArrayBuilder <ModuleMetadata> .GetInstance();
moduleBuilder.Add(manifestModule);
originalDirectory = Path.GetDirectoryName(manifestModuleCopy.OriginalPath);
shadowCopyDirectory = Path.GetDirectoryName(manifestModuleCopy.FullPath);
}
string originalPath = Path.Combine(originalDirectory, moduleName);
string shadowCopyPath = Path.Combine(shadowCopyDirectory, moduleName);
var moduleCopy = CopyFile(originalPath, shadowCopyPath);
moduleBuilder.Add(CreateModuleMetadata(moduleCopy));
}
var modules = (moduleBuilder != null) ? moduleBuilder.ToReadOnly() : ReadOnlyArray.Singleton(manifestModule);
fault = false;
return(new AssemblyMetadata(modules));
}
finally
{
if (fault)
{
if (manifestModule != null)
{
manifestModule.Dispose();
}
if (moduleBuilder != null)
{
for (int i = 1; i < moduleBuilder.Count; i++)
{
moduleBuilder[i].Dispose();
}
}
}
if (moduleBuilder != null)
{
moduleBuilder.Free();
}
}
}