/// <summary>
/// Constructor
/// </summary>
internal AssemblyFoldersExCache(AssemblyFoldersEx assemblyFoldersEx, FileExists fileExists)
{
AssemblyFoldersEx = assemblyFoldersEx;
_fileExists = fileExists;
if (Environment.GetEnvironmentVariable("MSBUILDDISABLEASSEMBLYFOLDERSEXCACHE") != null)
{
_useOriginalFileExists = true;
}
else
{
var lockobject = new Object();
Parallel.ForEach(assemblyFoldersEx, assemblyFolder =>
{
if (FileUtilities.DirectoryExistsNoThrow(assemblyFolder.DirectoryPath))
{
string[] files = Directory.GetFiles(assemblyFolder.DirectoryPath, "*.*", SearchOption.TopDirectoryOnly);
lock (lockobject)
{
foreach (string file in files)
{
_filesInDirectories.Add(file);
}
}
}
});
}
}
/// <summary>
/// Initialize this class if it hasn't been initialized yet.
/// </summary>
private void LazyInitialize()
{
if (_isInitialized)
{
return;
}
_isInitialized = true;
// Crack the search path just one time.
Match match = s_crackAssemblyFoldersExSentinel.Value.Match(this.searchPathElement);
_wasMatch = false;
if (match.Success)
{
_registryKeyRoot = match.Groups["REGISTRYKEYROOT"].Value.Trim();
_targetRuntimeVersion = match.Groups["TARGETRUNTIMEVERSION"].Value.Trim();
_registryKeySuffix = match.Groups["REGISTRYKEYSUFFIX"].Value.Trim();
_osVersion = null;
_platform = null;
Group conditions = match.Groups["CONDITIONS"];
// Disregard if there are any empty values in the {Registry} tag.
if (_registryKeyRoot.Length != 0 && _targetRuntimeVersion.Length != 0 && _registryKeySuffix.Length != 0)
{
// Tolerate version keys that don't begin with "v" as these could come from user input
if (!_targetRuntimeVersion.StartsWith("v", StringComparison.OrdinalIgnoreCase))
{
_targetRuntimeVersion = _targetRuntimeVersion.Insert(0, "v");
}
if (conditions?.Value != null && conditions.Length > 0 && conditions.Value.Length > 0)
{
string value = conditions.Value.Trim();
// Parse the condition statement for OSVersion and Platform
foreach (string c in value.Split(MSBuildConstants.ColonChar))
{
if (String.Compare(c, 0, "OSVERSION=", 0, 10, StringComparison.OrdinalIgnoreCase) == 0)
{
_osVersion = c.Substring(10);
}
else if (String.Compare(c, 0, "PLATFORM=", 0, 9, StringComparison.OrdinalIgnoreCase) == 0)
{
_platform = c.Substring(9);
}
}
}
_wasMatch = true;
bool useCache = Environment.GetEnvironmentVariable("MSBUILDDISABLEASSEMBLYFOLDERSEXCACHE") == null;
string key = "ca22615d-aa83-444b-80b9-b32f3d5db097" + this.searchPathElement;
if (useCache && _buildEngine != null)
{
_assemblyFoldersCache = _buildEngine.GetRegisteredTaskObject(key, RegisteredTaskObjectLifetime.Build) as AssemblyFoldersExCache;
}
if (_assemblyFoldersCache == null)
{
AssemblyFoldersEx assemblyFolders = new AssemblyFoldersEx(_registryKeyRoot, _targetRuntimeVersion, _registryKeySuffix, _osVersion, _platform, _getRegistrySubKeyNames, _getRegistrySubKeyDefaultValue, this.targetProcessorArchitecture, _openBaseKey);
_assemblyFoldersCache = new AssemblyFoldersExCache(assemblyFolders, fileExists);
if (useCache)
{
_buildEngine?.RegisterTaskObject(key, _assemblyFoldersCache, RegisteredTaskObjectLifetime.Build, true /* dispose early ok*/);
}
}
fileExists = _assemblyFoldersCache.FileExists;
}
}
}
