add a string parser

src/cxxopts.cpp

@@ -141,6 +141,7 @@ Options::parse(int& argc, char**& argv)
             if (i + 1 == s.size())
             {
               checked_parse_arg(argc, argv, current+1, value, name);
+              ++current;
             }
             else
             {
@@ -182,6 +183,8 @@ Options::parse(int& argc, char**& argv)
           {
             //parse the next argument
             checked_parse_arg(argc, argv, current + 1, opt, name);
+
+            ++current;
           }
           else
           {

src/cxxopts.hpp

@@ -35,6 +35,21 @@ namespace cxxopts
         return false;
       }
     };
+
+    class String : public Value
+    {
+      void
+      parse(const std::string& text, any& result) const
+      {
+        result = text;
+      }
+
+      bool
+      has_arg() const
+      {
+        return true;
+      }
+    };
   }
 
   extern std::basic_regex<char> option_matcher;

src/main.cpp

@@ -31,11 +31,26 @@ int main(int argc, char* argv[])
   options.add_options()
     ("a,apple", "an apple")
     ("b,bob", "Bob")
-    ("b,bob", "Bob")
+    ("f,file", "File", std::make_shared<cxxopts::values::String>())
   ;
 
   options.parse(argc, argv);
 
+  if (options.count("a"))
+  {
+    std::cout << "Saw option ‘a’" << std::endl;
+  }
+
+  if (options.count("b"))
+  {
+    std::cout << "Saw option ‘b’" << std::endl;
+  }
+
+  if (options.count("f"))
+  {
+    std::cout << "File = " << boost::any_cast<std::string>(options["f"]) << std::endl;
+  }
+
   } catch (const std::regex_error& e)
   {
     std::cout << "regex_error: " << e.what() << std::endl;