#define __COMMAND_ARGUMENT_H
#include <string>
+#include <sstream>
#include <iostream>
#include "parameter.h"
namespace command {
/**
* Class responsible for handling commandline arguments.
- * Arguments are required,x non-named parameters of program.
+ * Arguments are required, non-named parameters of program.
+ * Accepts
*
* Example:
* ./myprog ARGUMENT
+ * ./myprog /path/to/file
+ * ./myprog "some argument"
*/
template<typename ArgumentType>
class Argument : public Parameter, public Callable<ArgumentType> {
+ protected:
+ /** Variable indicating if current Argument was already used or not */
+ bool used = false;
+
+ ArgumentType argument;
public:
typedef class Argument Type;
+
/**
* Default constructor.
*
* @param description Description of current Argument
* @param function Function used to handle current Argument.
*/
- Argument(std::string description, void (*function)(ArgumentType))
+ Argument(const std::string & description, void (*function)(ArgumentType))
: Parameter(description), Callable<ArgumentType>(function) {
}
+
+ /**
+ *
+ */
virtual ~Argument() { }
+ /**
+ *
+ */
virtual void handle() {
- std::cout << "Argument::handle()" << std::endl;
- this->call(std::string("A"));
+ this->call(argument);
+ }
+
+ /**
+ * Method used for checking if Argument understands user value.
+ * If so current Argument is flagged as used and no more checks against
+ * it will be done in future.
+ *
+ * \attention If conversion from passed value to ArgumentType is
+ * impossible, it is ignored. It means that it is not understanded by
+ * Argument.
+ *
+ * @param argv command line value against which test will be made.
+ *
+ * @return If passed argv is succesfully converted to ArgumentType,
+ * returns true and Argument is set as used one. If there was an error
+ * during conversion, method returns false and can be used to check
+ * against next value.
+ */
+ virtual bool understand(const std::string & argv) {
+ if (!used) {
+ std::stringstream ss;
+
+ ss << argv;
+ ss >> argument;
+
+ if (!ss.fail()) {
+ used = true;
+ return true;
+ }
+ }
+
+ return false;
}
};
}