private static List <string> ProcessComplexItems(IEnumerable <string> directories, PathSegment wildcard,
Regex regularExpression)
{
List <string> newItems = new List <string>();
int indexOfComplexWildcard =
wildcard.Value.IndexOf(PathConstants.ANY_PATH_WILDCARD, StringComparison.OrdinalIgnoreCase);
bool hasSimpleStart = false;
string simpleStart = string.Empty;
if (indexOfComplexWildcard > 0)
{
hasSimpleStart = true;
simpleStart = wildcard.Value.Substring(0, indexOfComplexWildcard) +
PathConstants.WILDCARD_ANY_CHARACTER;
}
foreach (string directory in directories)
{
IEnumerable <string> subItems = hasSimpleStart
? TexoDirectory.GetFileSystemEntries(directory, PathConstants.SEARCH_TERM_ALL, simpleStart)
: TexoDirectory.GetFileSystemEntries(directory, PathConstants.SEARCH_TERM_ALL,
SearchOption.AllDirectories);
newItems.AddRange(subItems.Where(item => regularExpression.IsMatch(item)));
}
return(newItems);
}
public IImmutableList <string> GetTopDirectories()
{
var result = ImmutableList <string> .Empty.ToBuilder();
Stack <string> directories = new Stack <string>();
directories.Push(GetFixedPrefixPath());
while (directories.Count > 0)
{
string directory = directories.Pop();
foreach (string subDirectory in TexoDirectory.GetDirectories(directory))
{
if (regularExpression.IsMatch(subDirectory))
{
result.Add(subDirectory);
}
else
{
directories.Push(subDirectory);
}
}
}
return(result.ToImmutable());
}
public IImmutableList <string> GetFilesFromDirectories(string searchPattern, SearchOption options)
{
var result = ImmutableList <string> .Empty.ToBuilder();
IEnumerable <string> directories =
options == SearchOption.AllDirectories
? GetTopDirectories()
: GetDirectories();
foreach (string directory in directories)
{
result.AddRange(TexoDirectory.GetFiles(directory, searchPattern, options));
}
return(result.ToImmutable());
}
private List <string> ProcessItems(List <string> directories)
{
int wildcardIndex = GetFirstWildcardOrLastIndex();
int lastIndex = GetLastIndex();
while (true)
{
PathSegment wildcard = Segments[wildcardIndex];
if (wildcard.WildcardType == PathSegment.WildcardTypeEnum.Complex)
{
return(ProcessComplexItems(directories, wildcard, regularExpression));
}
if (wildcardIndex == lastIndex)
{
return(ProcessLeafItems(directories, wildcard));
}
List <string> newDirectories = new List <string>();
foreach (string directory in directories)
{
if (wildcard.WildcardType == PathSegment.WildcardTypeEnum.Simple)
{
newDirectories.AddRange(TexoDirectory.GetDirectories(directory, wildcard.Value,
SearchOption.TopDirectoryOnly));
}
else
{
string newDirectory = System.IO.Path.Combine(directory, wildcard.Value);
if (Directory.Exists(newDirectory))
{
newDirectories.Add(newDirectory);
}
}
}
directories = newDirectories;
wildcardIndex++;
}
}
