internal static IEnumerable <FileSystemInfo> InternalEnumerateInfos(
string path,
string searchPattern,
SearchTarget searchTarget,
EnumerationOptions options)
{
Debug.Assert(path != null);
if (searchPattern == null)
{
throw new ArgumentNullException(nameof(searchPattern));
}
FileSystemEnumerableFactory.NormalizeInputs(ref path, ref searchPattern, options);
switch (searchTarget)
{
case SearchTarget.Directories:
return(FileSystemEnumerableFactory.DirectoryInfos(path, searchPattern, options));
case SearchTarget.Files:
return(FileSystemEnumerableFactory.FileInfos(path, searchPattern, options));
case SearchTarget.Both:
return(FileSystemEnumerableFactory.FileSystemInfos(path, searchPattern, options));
default:
throw new ArgumentException(SR.ArgumentOutOfRange_Enum, nameof(searchTarget));
}
}
private IEnumerable <FileSystemInfo> InternalEnumerateInfos(
string path,
string searchPattern,
SearchTarget searchTarget,
EnumerationOptions options)
{
ArgumentNullException.ThrowIfNull(searchPattern);
Debug.Assert(path != null);
_isNormalized &= FileSystemEnumerableFactory.NormalizeInputs(ref path, ref searchPattern, options.MatchType);
return(searchTarget switch
{
SearchTarget.Directories => FileSystemEnumerableFactory.DirectoryInfos(path, searchPattern, options, _isNormalized),
SearchTarget.Files => FileSystemEnumerableFactory.FileInfos(path, searchPattern, options, _isNormalized),
SearchTarget.Both => FileSystemEnumerableFactory.FileSystemInfos(path, searchPattern, options, _isNormalized),
_ => throw new ArgumentException(SR.ArgumentOutOfRange_Enum, nameof(searchTarget)),
});