internal static bool TryResolveInnerSpecialDirectory(string normalizedPath, out string resolvedPath, out string failureMessage)
{
//Argument.IsNotNullOrEmpty(nameof(normalizedPath), normalizedPath);
//Debug.Assert(normalizedPath.IsNormalized());
//Debug.Assert(ContainsInnerSpecialDirectory(normalizedPath));
var isPathRelative = IsARelativePath(normalizedPath);
var originalPathNormalized = normalizedPath;
var isUNCPath = UncPathHelper.StartLikeUncPath(normalizedPath);
string serverShareStart = null;
if (isUNCPath)
{
// We can assert that coz already checked in IsValidAbsoluteDirectory()
//Debug.Assert(UNCPathHelper.IsAnAbsoluteUNCPath(normalizedPath));
normalizedPath = UncPathHelper.ConvertUncToDriveLetter(normalizedPath, out serverShareStart);
}
var pathDirectories = normalizedPath.Split(MiscHelpers.DirectorySeparatorChar);
var rootDirectory = pathDirectories[0];
//Debug.Assert(pathDirs.Length > 0);
if (isUNCPath)
{
rootDirectory = serverShareStart;
}
var result = TryResolveInnerSpecialDirectory(pathDirectories, isPathRelative, out resolvedPath);
if (!result)
{
failureMessage =
$@"The pathString {{{originalPathNormalized}}} references the parent dir \..\ of the root dir {{{rootDirectory}}}, it cannot be resolved.";
return(false);
}
//Debug.Assert(resolvedPath != null);
//Debug.Assert(resolvedPath.IsNormalized());
if (isUNCPath)
{
resolvedPath = UncPathHelper.ConvertDriveLetterToUnc(resolvedPath, serverShareStart);
}
failureMessage = null;
return(true);
}
internal static bool TryGetAbsolutePathFrom(IAbsoluteDirectoryPath pathFrom, IPath pathTo, out string absolutePath, out string failureMessage)
{
//Argument.IsNotNull(nameof(pathFrom), pathFrom);
//Argument.IsNotNull(nameof(pathTo), pathTo);
//Debug.Assert(pathTo.IsRelativePath);
if (pathFrom.Type == AbsolutePathType.DriveLetter)
{
// Only work with Directory
if (pathTo.IsFilePath)
{
pathTo = pathTo.ParentDirectoryPath;
}
return(TryGetAbsolutePath(pathFrom.ToString(), pathTo.ToString(), out absolutePath, out failureMessage));
}
//Debug.Assert(pathFrom.Kind == AbsolutePathKind.UNC);
string uncServerShareStart;
string pathResultDriveLetter;
var pathFromString = pathFrom.ToString();
var fakePathFromString = UncPathHelper.ConvertUncToDriveLetter(pathFromString, out uncServerShareStart);
var fakePathFrom = fakePathFromString.ToAbsoluteDirectoryPath();
//Debug.Assert(fakePathFromString.IsValidAbsoluteDirectoryPath());
if (!TryGetAbsolutePathFrom(fakePathFrom, pathTo, out pathResultDriveLetter, out failureMessage))
{
failureMessage = failureMessage.Replace(UncPathHelper.FakeDriveLetterPrefix, uncServerShareStart);
absolutePath = null;
return(false);
}
//Debug.Assert(pathResultDriveLetter != null);
//Debug.Assert(pathResultDriveLetter.Length > 0);
//Debug.Assert(pathResultDriveLetter.StartsWith(UNCPathHelper.FAKE_DRIVE_LETTER_PREFIX));
absolutePath = UncPathHelper.ConvertDriveLetterToUnc(pathResultDriveLetter, uncServerShareStart);
return(true);
}