public void ParsePattern(string line)
{
//Regex regex= new Regex(@"%-?[0-9]*\.?[0-9]*(?<pattern>[a-zA-Z]+)");
Regex regex = new Regex(
@"(?<literal>[^%]*)%((?<min>-?[0-9]*)(\.(?<max>[0-9]*)))?(?<patternname>[a-zA-Z]+)(?<literal2>[^%]*)",
RegexOptions.Compiled | RegexOptions.ExplicitCapture);
Match match = regex.Match(line);
while (match.Success)
{
string literal = match.Groups["literal"].Value;
if (false == String.IsNullOrEmpty(literal))
{
elements.Add(new LiteralPatternLayoutElement(literal));
}
if (match.Groups["patternname"].Success)
{
string patternName = match.Groups["patternname"].Value;
int? minLength = null;
int? maxLength = null;
if (match.Groups["min"].Success)
{
minLength = int.Parse(match.Groups["min"].Value, CultureInfo.InvariantCulture);
}
if (match.Groups["max"].Success)
{
maxLength = int.Parse(match.Groups["max"].Value, CultureInfo.InvariantCulture);
}
ConversionPatternBase conversionPattern = FindLayoutElement(patternName);
conversionPattern.MinLength = minLength;
conversionPattern.MaxLength = maxLength;
elements.Add(conversionPattern);
//log.DebugFormat("{0} {1} {2} {3}", patternName, minLength, maxLength, literal);
}
string literal2 = match.Groups["literal2"].Value;
if (false == String.IsNullOrEmpty(literal2))
{
elements.Add(new LiteralPatternLayoutElement(literal2));
}
match = match.NextMatch();
}
}
private ConversionPatternBase FindLayoutElement(string patternName)
{
if (false == conversionPatternsMap.ContainsKey(patternName))
{
throw new KeyNotFoundException(
String.Format(
CultureInfo.InvariantCulture,
"The pattern '{0}' is not supported.",
patternName));
}
string className = conversionPatternsMap[patternName];
ConversionPatternBase patternLayoutElement =
(ConversionPatternBase)Assembly.GetExecutingAssembly().CreateInstance(className);
patternLayoutElement.PatternName = patternName;
return(patternLayoutElement);
}