internal static int GetLongPathName(string path, [Out] StringBuilder longPathBuffer, int bufferLength)
{
bool wasExtended = PathInternal.IsExtended(path);
if (!wasExtended)
{
path = PathInternal.EnsureExtendedPrefixOverMaxPath(path);
}
int result = GetLongPathNamePrivate(path, longPathBuffer, longPathBuffer.Capacity);
if (!wasExtended)
{
// We don't want to give back \\?\ if we possibly added it ourselves
PathInternal.RemoveExtendedPrefix(longPathBuffer);
}
return(result);
}
internal static int GetFullPathName(string path, int numBufferChars, [Out] StringBuilder buffer, IntPtr mustBeZero)
{
bool wasExtended = PathInternal.IsExtended(path);
if (!wasExtended)
{
path = PathInternal.EnsureExtendedPrefixOverMaxPath(path);
}
int result = GetFullPathNamePrivate(path, buffer.Capacity, buffer, mustBeZero);
if (!wasExtended)
{
// We don't want to give back \\?\ if we possibly added it ourselves
PathInternal.RemoveExtendedPrefix(buffer);
}
return(result);
}
internal static int GetFullPathName(string path, int numBufferChars, [Out] StringBuilder buffer)
{
// GetFullPathName is backwards from most APIs. It handles long "DOS" paths without a problem. While it understands
// extended paths (\\?\), it roots them incorrectly, eating into the volume name with relative paths.
PathInternal.ExtendedType extendedType = PathInternal.RemoveExtendedPrefix(ref path);
int result = GetFullPathNamePrivate(path, buffer.Capacity, buffer, IntPtr.Zero);
if ((extendedType & PathInternal.ExtendedType.Extended) != 0)
{
// We want to *always* give back whatever we removed
if (extendedType.HasFlag(PathInternal.ExtendedType.ExtendedUnc))
{
buffer.Insert(2, PathInternal.UncExtendedPrefixToInsert);
}
else
{
buffer.Insert(0, PathInternal.ExtendedPathPrefix);
}
}
return(result);
}