public static ReadOnlySpan <char> GetDirectoryName(ReadOnlySpan <char> path)
{
if (PathInternal.IsEffectivelyEmpty(path))
{
return(ReadOnlySpan <char> .Empty);
}
int directoryNameOffset = Path.GetDirectoryNameOffset(path);
return(directoryNameOffset < 0 ? ReadOnlySpan <char> .Empty : path.Slice(0, directoryNameOffset));
}
public static string GetDirectoryName(string path)
{
if (path == null || PathInternal.IsEffectivelyEmpty(path.AsSpan()))
{
return((string)null);
}
int directoryNameOffset = Path.GetDirectoryNameOffset(path.AsSpan());
return(directoryNameOffset < 0 ? (string)null : PathInternal.NormalizeDirectorySeparators(path.Substring(0, directoryNameOffset)));
}
// In case of link target being relative:
// Preserve the full path of the directory of the previous path
// so the final target is returned with a valid full path
static void GetLinkTargetFullPath(ref ValueStringBuilder sb, ReadOnlySpan <char> linkTarget)
{
if (PathInternal.IsPartiallyQualified(linkTarget))
{
sb.Length = Path.GetDirectoryNameOffset(sb.AsSpan());
sb.Append(PathInternal.DirectorySeparatorChar);
}
else
{
sb.Length = 0;
}
sb.Append(linkTarget);
}
