Added method to find a keyword

This finds a keyword in a list without erasing it.

src/tools/Tools.cpp

@@ -321,5 +321,14 @@ bool Tools::startWith(const std::string & full,const std::string &start){
   return (full.substr(0,start.length())==start);
 }
 
+bool Tools::findKeyword(const std::vector<std::string>&line,const std::string&key){
+  const std::string search(key+"=");
+  for(vector<string>::const_iterator p=line.begin();p!=line.end();++p){
+    if(startWith(*p,search)) return true;
+  }
+  return false;
+}
+
+
 
 }

src/tools/Tools.h

@@ -110,6 +110,8 @@ public:
   static bool parseVector(std::vector<std::string>&line,const std::string&key,std::vector<T>&val);
 /// Find a keyword without arguments on the input line
   static bool parseFlag(std::vector<std::string>&line,const std::string&key,bool&val);
+/// Find a keyword on the input line, just reporting if it exists or not
+  static bool findKeyword(const std::vector<std::string>&line,const std::string&key);
 /// Interpret atom ranges
   static void interpretRanges(std::vector<std::string>&);
 /// Remove duplicates from a vector of type T