public static RulesModel ReadRuleFile(string path)
{
RulesModel rules = new RulesModel();
rules.Rules = new List <Rule>();
if (File.Exists(path))
{
using (StreamReader sr = new StreamReader(path))
{
string line = string.Empty;
while ((line = sr.ReadLine()) != null)
{
Rule rule = new Rule();
if (line == string.Empty || line[0] == '!')
{
continue;
}
else if (int.TryParse(line[0].ToString(), out int specificity))
{
var values = line.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
values.ToList().ForEach(t => t.Trim());
if (values.Length == 3 && int.TryParse(values[1], out int strength) &&
int.TryParse(values[2], out int matchingCase))
{
rule.Strength = strength;
rule.Specificity = specificity;
rule.MatchingCases = matchingCase;
rule.Attributes = new OrderedDictionary();
var rulLine = sr.ReadLine();
if (!rulLine.Contains("->") && !rulLine.Contains("-->"))
{
string tempLine = string.Empty;
while ((tempLine = sr.ReadLine()) != null)
{
rulLine += tempLine;
if (tempLine.Contains("->") || rulLine.Contains("-->"))
{
break;
}
}
}
var rulData = rulLine.Split(new string[] { "&", "->", "-->" }, StringSplitOptions.RemoveEmptyEntries).ToList();
int count = 0;
rulData.ForEach(pair =>
{
count++;
pair.Trim();
var attrPair = pair.Split(',');
if (count == rulData.Count)
{
rule.Decision = new KeyValuePair <string, string>(ReplaceFirstOccurrence(attrPair[0], "(", "").Trim(), ReplaceLastOccurrence(attrPair[1], ")", "").Trim());
}
else
{
rule.Attributes.Add(ReplaceFirstOccurrence(attrPair[0], "(", "").Trim(), ReplaceLastOccurrence(attrPair[1], ")", "").Trim());
}
rule.CalculatedValue = Decision.CalculateValue(rule);
});
}
else
{
throw new Exception("Error in Rule File: Incorrect Numbers preceding rule");
}
rules.Rules.Add(rule);
}
}
}
}
else
{
throw new Exception("Rule File Missing - " + Path.GetFileName(path));
}
return(rules);
}
