public static List <Pair <FilterType, Regex> > ParseFdf(string fdfPath)
{
List <string> fdfPathList = new List <string>();
if (fdfPath == null)
{
return((List <Pair <FilterType, Regex> >)null);
}
return(FilterDescription.ParseFdfRecursively(fdfPath, ref fdfPathList));
}
private static List <Pair <FilterType, Regex> > ParseFdfRecursively(string fdfPath, ref List <string> fdfPathList)
{
fdfPath = FilterDescription.FormatFilePathDelimiterForFilter(fdfPath);
if (!Path.IsPathRooted(fdfPath) && fdfPathList.Count > 0)
{
fdfPath = Path.Combine(Path.GetDirectoryName(fdfPathList[fdfPathList.Count - 1]), fdfPath);
}
fdfPath = Path.GetFullPath(fdfPath).TrimEnd('\\');
if (0 <= fdfPathList.FindIndex((Predicate <string>)(path => string.Compare(path, fdfPath, StringComparison.InvariantCultureIgnoreCase) == 0)))
{
return(new List <Pair <FilterType, Regex> >());
}
fdfPathList.Add(fdfPath);
List <Pair <FilterType, Regex> > pairList = new List <Pair <FilterType, Regex> >();
using (StreamReader streamReader = new StreamReader(fdfPath))
{
while (!streamReader.EndOfStream)
{
string path = streamReader.ReadLine();
if (!string.IsNullOrEmpty(path) && !path.StartsWith(";"))
{
string input = FilterDescription.ReplaceEnvironmentVariableKeyword(path);
Match match = FilterDescription.RegexKeywordInclude.Match(input);
if (match.Success)
{
string fdfPath1 = match.Groups["path"].Value;
pairList.AddRange((IEnumerable <Pair <FilterType, Regex> >)FilterDescription.ParseFdfRecursively(fdfPath1, ref fdfPathList));
}
FilterType a;
switch (input[0])
{
case '+':
a = FilterType.Exception;
break;
case '-':
a = FilterType.Remove;
break;
default:
continue;
}
Regex b = new Regex(FilterDescription.FormatFilePathDelimiterForFilterRegex(input.Substring(1).Trim().Trim('"')), RegexOptions.Compiled);
pairList.Add(new Pair <FilterType, Regex>(a, b));
}
}
return(pairList);
}
}