private static Exception _TryParse(string text, out GlobTemplate result)
{
MatchCollection matches = EXPR_FORMAT.Matches(text);
int previousIndex = 0;
StringBuilder regexBuilder = new StringBuilder();
StringBuilder globBuilder = new StringBuilder();
List <string> variables = new List <string>();
foreach (Match match in matches)
{
var literal = text.Substring(previousIndex, match.Index - previousIndex);
regexBuilder.Append(Regex.Escape(literal));
globBuilder.Append(literal);
string expText = match.Groups["Expression"].Value;
regexBuilder.AppendFormat("(?<{0}>.*?)", expText);
globBuilder.Append("*");
previousIndex = match.Index + match.Length;
variables.Add(expText);
}
var literal2 = text.Substring(previousIndex, text.Length - previousIndex);
regexBuilder.Append(Regex.Escape(literal2));
globBuilder.Append(literal2);
regexBuilder.Append("$");
string regex = regexBuilder.ToString();
// remove ./ except if the string starts with it
regex = Regex.Replace(regex, @"(?<!^)\\\./", "");
regex = "^.*" + regex.Replace(@"\./", "/");
result = new GlobTemplate(variables, globBuilder.ToString(), regex);
return(null);
}
public static bool TryParse(string text, out GlobTemplate result)
{
return(_TryParse(text, out result) == null);
}