// Not yet implemented.
// static readonly Lazy<ConcurrentDictionary<string, IntPtr>> LibraryHandlesByFullPath = new Lazy<ConcurrentDictionary<string, IntPtr>>(() => new ConcurrentDictionary<string, IntPtr>(StringComparer.OrdinalIgnoreCase), LazyThreadSafetyMode.PublicationOnly);
/// <summary>
/// Searches known directories for the provided file basename (or returns true if one is already loaded)
/// basename 'imageflow' -> imageflow.exe, imageflow
/// Basename is case-sensitive
/// </summary>
/// <param name="basename">The executable name sans extension</param>
/// <param name="log">Where to log attempts at assembly search and load</param>
/// <param name="customSearchDirectory">Provide this if you want a custom search folder</param>
/// <returns>True if previously or successfully loaded</returns>
internal static bool TryLoadByBasename(string basename, ILibraryLoadLogger log, out string exePath,
IEnumerable <string> customSearchDirectories = null)
{
if (string.IsNullOrEmpty(basename))
{
throw new ArgumentNullException("filenameWithoutExtension");
}
if (ExecutablePathsByName.Value.TryGetValue(basename, out exePath))
{
return(true);
}
var filename = GetFilenameWithoutDirectory(basename);
exePath = null;
foreach (var path in RuntimeFileLocator.SearchPossibilitiesForFile(filename, customSearchDirectories))
{
if (!File.Exists(path))
{
log.NotifyAttempt(basename, path, false, false, 0);
}
else
{
exePath = path;
ExecutablePathsByName.Value[basename] = exePath;
return(true);
}
}
return(false);
}
private static bool TryLoadByBasenameInternal(string basename, ILibraryLoadLogger log, out IntPtr handle, IEnumerable <string> customSearchDirectories = null)
{
var filename = GetFilenameWithoutDirectory(basename);
foreach (var path in RuntimeFileLocator.SearchPossibilitiesForFile(filename, customSearchDirectories))
{
if (!File.Exists(path))
{
log.NotifyAttempt(basename, path, false, false, 0);
}
else
{
var success = LoadLibrary(path, out handle, out var errorCode);
log.NotifyAttempt(basename, path, true, false, errorCode);
if (success)
{
return(true);
}
}
}
handle = IntPtr.Zero;
return(false);
}