public ModDependency(string modRequirementString)
{
var match = Regex.Match(modRequirementString, @"^(?<isOptional>\? ?)?(?<isConflict>! ?)?(?<modName>[a-zA-Z0-9_-][a-zA-Z0-9_ -\.]+[a-zA-Z0-9_-])(?<notEqualVersion> *!= *[0-9\.]+)?(?<minVersion> *>=? *[0-9\.]+)?(?<maxVersion> *<=? *[0-9\.]+)?(?<exactVersion> *==? *[0-9\.]+)?$");
if (!match.Success)
{
throw new ArgumentException($"Invalid mod requirement string: '{modRequirementString}'", nameof(modRequirementString));
}
isConflict = match.Groups["isConflict"].Success;
isOptional = match.Groups["isOptional"].Success;
modName = match.Groups["modName"].Value;
if (match.Groups["minVersion"].Success)
{
if (!modRequirementString.Contains(">="))
{
minVersion = new ModVersion(match.Groups["minVersion"].Value.Replace(">", "").Trim());
minVersion = ModVersion.increment(minVersion);
}
else
{
minVersion = new ModVersion(match.Groups["minVersion"].Value.Replace(">=", "").Trim());
}
}
if (match.Groups["maxVersion"].Success)
{
if (!modRequirementString.Contains("<="))
{
maxVersion = new ModVersion(match.Groups["maxVersion"].Value.Replace("<", "").Trim());
maxVersion = ModVersion.decrement(maxVersion);
}
else
{
maxVersion = new ModVersion(match.Groups["maxVersion"].Value.Replace("<=", "").Trim());
}
}
if (match.Groups["exactVersion"].Success)
{
minVersion = maxVersion = new ModVersion(match.Groups["exactVersion"].Value.Replace("=", "").Trim());
}
// @todo: it should allow versions lower than this, but it's not implemented yet
if (match.Groups["notEqualVersion"].Success)
{
minVersion = new ModVersion(match.Groups["notEqualVersion"].Value.Replace("!=", "").Trim());
minVersion = ModVersion.increment(minVersion);
}
}
