0503

@@ -10,21 +10,62 @@ namespace VulnCrawler
 {
     public class VulnC : VulnAbstractCrawler
     {
+        protected override string RegexFuncPattern => $@"@@ \-(?<{OldStart}>\d+),(?<{OldLines}>\d+) \+(?<{NewStart}>\d+),(?<{NewLines}>\d+) @@ (?<{MethodName}>.+)";
 
-        protected override string RegexFuncPattern => throw new NotImplementedException();
-
-        protected override string Extension => throw new NotImplementedException();
+        protected override string Extension => ".c";
 
         public override MatchCollection GetMatches(string patchCode) {
-            throw new NotImplementedException();
+            var regs = Regex.Matches(patchCode, RegexFuncPattern);
+            return regs;
         }
 
         public override string RemoveComment(string original) {
-            throw new NotImplementedException();
+            string txt = Regex.Replace(original, Environment.NewLine, "");
+
+            //StringBuilder sb = new StringBuilder();
+            //sb.Append("\"\"\"");
+            //sb.Append(@".*");
+            //sb.Append("\"\"\"");
+            //string replace = txt;
+            //if (Regex.Match(txt, sb.ToString()).Success) {
+            //    replace = Regex.Replace(txt, sb.ToString(), "");
+            //}
+            return replace;
         }
 
         protected override string GetOriginalFunc(Stream oldStream, string methodName) {
-            throw new NotImplementedException();
+            StringBuilder oldBuilder = new StringBuilder();
+            using (var reader = new StreamReader(oldStream)) {
+                int defSpace = 0;
+                while (!reader.EndOfStream) {
+
+                    string line = reader.ReadLine();
+                    if (defSpace > 0) {
+                        if (line.Length < defSpace) {
+                            continue;
+                        }
+                        string concat = line.Substring(0, defSpace);
+                        if (string.IsNullOrWhiteSpace(concat)) {
+                            string trim = line.Trim();
+                            // #으로 시작한다면 주석이니 제거
+                            if (trim.StartsWith("#")) {
+                                continue;
+                            }
+                            oldBuilder.AppendLine(line);
+                        } else {
+                            continue;
+                        }
+                    }
+                    if (Regex.Match(line, $@"{methodName}").Success) {
+                        
+                        defSpace = line.IndexOf(methodName);
+                        oldBuilder.AppendLine(line);
+                    }
+
+                }
+
+            }
+            return oldBuilder.ToString();
         }
     }
 }