internal static FileSystemFinderResult?MatchFile(
string path,
Filter nameFilter,
Filter extensionFilter,
FileSystemFinderOptions options,
IProgress <FileSystemFinderProgress> progress,
NamePartKind namePartKind)
{
if (options.Attributes != 0 &&
(File.GetAttributes(path) & options.Attributes) != options.Attributes)
{
return(null);
}
progress?.Report(new FileSystemFinderProgress(path, ProgressKind.File));
if (extensionFilter?.IsMatch(NamePart.FromFile(path, extensionFilter.NamePart)) == false)
{
return(null);
}
NamePart namePart = NamePart.FromFile(path, namePartKind);
Match match = null;
if (nameFilter != null)
{
match = (options.PartOnly)
? nameFilter.Regex.Match(namePart.ToString())
: nameFilter.Regex.Match(path, namePart.Index, namePart.Length);
if (!nameFilter.IsMatch(match))
{
return(null);
}
}
if (options.Empty != null)
{
try
{
if ((options.Empty.Value)
? !FileSystemHelpers.IsEmptyFile(path)
: FileSystemHelpers.IsEmptyFile(path))
{
return(null);
}
}
catch (Exception ex) when(ex is IOException ||
ex is UnauthorizedAccessException)
{
progress?.Report(new FileSystemFinderProgress(path, ProgressKind.File, ex));
return(null);
}
}
return(new FileSystemFinderResult(namePart, match));
}
internal static FileSystemFinderResult MatchDirectory(
string path,
Filter nameFilter,
FileSystemFinderOptions options,
IProgress <FileSystemFinderProgress> progress,
NamePartKind namePartKind)
{
if (options.Attributes != 0 &&
(File.GetAttributes(path) & options.Attributes) != options.Attributes)
{
return(null);
}
progress?.Report(new FileSystemFinderProgress(path, ProgressKind.Directory));
NamePart namePart = NamePart.FromDirectory(path, namePartKind);
Match match = null;
if (nameFilter != null)
{
match = (options.PartOnly)
? nameFilter.Regex.Match(namePart.ToString())
: nameFilter.Regex.Match(path, namePart.Index, namePart.Length);
if (!nameFilter.IsMatch(match))
{
return(null);
}
}
if (options.Empty != null)
{
try
{
if ((options.Empty.Value)
? !IsEmptyDirectory(path)
: IsEmptyDirectory(path))
{
return(null);
}
}
catch (Exception ex) when(ex is IOException ||
ex is UnauthorizedAccessException)
{
progress?.Report(new FileSystemFinderProgress(path, ProgressKind.Directory, ex));
return(null);
}
}
return(new FileSystemFinderResult(namePart, match, isDirectory: true));
}
