public static bool TryParse(FilepathScanner aScan, out DosDevice?oResult)
{
oResult = null;
if (!aScan.Skip(PREFIX_PATTERN, out var match))
{
return(false);
}
oResult = new DosDevice();
oResult.SignChar = match.Groups[1].Value;
if (aScan.Skip(UNC_PATTERN, out var asUnc))
{
// \\.\UNC\serever\share-name\....
oResult.IsUnc = true;
oResult.Server = asUnc.Groups[2].Value;
oResult.Share = asUnc.Groups[4].Value;
oResult.Volume = oResult.Server + asUnc.Groups[3].Value.Replace('/', System.IO.Path.DirectorySeparatorChar);
}
else if (aScan.Skip(VOLUME_PATTERN, out var volumePart))
{
// \\.\some-volume\...
oResult.Volume = volumePart.Groups[1].Value;
}
return(true);
}
static IEnumerable <string> _ParsePath(FilepathScanner aScan)
{
while (aScan.Skip(ItemPattern, out var match))
{
yield return(match.Groups[1].Value);
aScan.Skip(SeparatingPattern);
}
}
public static bool TryParse(FilepathScanner aScan, out Unc?oResult)
{
oResult = null;
if (!aScan.Skip(PREFIX_PATTERN, out var match))
{
return(false);
}
oResult = new Unc();
oResult.Server = match.Groups[1].Value;
oResult.Share = match.Groups[2].Value;
return(true);
}
/// <summary>
/// <example>
/// Traditional DOS path
/// <code>
/// var normal_abs = Parse(@"C:\dir\file.txt");
/// var normal_rel = Parse(@"relative\dir\and\file.txt");
/// var simple_abs = Parse(@"\");
/// var simple_abs2 = Parse(@"C:\");
/// var drive_rel = Parse(@"C:"); // specifies a drive, but relative
/// var drive_rel_2 = Parse(@"D:drive-and-relative\dir\file");
/// </code>
///
/// DOS Device path
/// <code>Parse(@"\\?\volume/dir/more-dir/.git");</code>
///
/// UNC path
/// <code>Parse(@"\\server\share-name\dir\file");</code>
///
/// UNIX
/// <code>
/// Parse("/usr/local/bin");
/// Parse("/"); // root
/// </code>
/// </example>
/// </summary>
/// <param name="aInput"></param>
/// <returns></returns>
public static Filepath Parse(string?aInput)
{
if (string.IsNullOrEmpty(aInput))
{
return(Empty);
}
var scan = new FilepathScanner(aInput);
var self = new Filepath();
self.Prefix = _ParsePrefix(scan);
self.IsAbsolute = scan.Skip(SeparatingPattern);
self.Items = new(_ParsePath(scan));
return(self);
}
public static bool TryParse(FilepathScanner aScan, out Dos?oResult)
{
oResult = null;
if (!aScan.Skip(PREFIX_PATTERN, out var match))
{
return(false);
}
oResult = new Dos
{
Drive = match.Value,
DriveLetter = match.Groups[1].Value,
};
return(true);
}