#include "parameter.h"
#include "exception/missingOptionValue.h"
#include "exception/optionFailedConversion.h"
+#include "exception/optionValueNotSpecified.h"
namespace command {
/**
* @param description Description of current Option
* @param function Function used to handle current Option.
*/
- Option(const std::string & name, const std::string & description, void (*function)(ParameterType))
+ Option(const std::string & name, const std::string & description, std::function<void(ParameterType)> function)
: Parameter(description), Callable<ParameterType>(function), name(name) {
}
* to ParameterType
*/
virtual bool understand(const std::string & argv) {
-
- if (argv.find(name) == 0) {
- std::size_t pos = argv.find("=");
+ if (this->hasName(argv)) {
+ std::size_t pos = this->valuePosition(argv);
if (pos != name.size()) {
throw MissingOptionValue("Option: " + name + " requires value but no one has been provided");
}
std::stringstream ss;
- ss << argv.substr(pos + 1);
+ ss << std::fixed << argv.substr(pos + 1);
ss >> value;
if (ss.fail()) {
- throw OptionFailedConversion("Value for option: " + name + " failed conversion to the required type");
+ throw OptionFailedConversion("Option: " + name + " failed value conversion to the required type");
}
return true;
/**
* \inheritdoc
*/
- virtual unsigned int valuePosition(const std::string & argv) {
- return argv.find("=");
+ virtual unsigned int valuePosition(const std::string & value) {
+ std::size_t pos = value.find("=");
+
+ if ((this->hasName(value)) && (pos == std::string::npos)) {
+ throw OptionValueNotSpecified("Option: " + name + " requires value to be specified after equal sign, but no equal sign was found");
+ }
+
+ return pos;
+ }
+
+ protected:
+ bool hasName(const std::string & argv) {
+ return argv.find(name) == 0;
}
};
* @param description Description of current Option
* @param function Function used to handle current Option.
*/
- Option(const std::string & name, const std::string & description, void (*function)(void))
+ Option(const std::string & name, const std::string & description, std::function<void(void)> function)
: Parameter(description), Callable<void>(function), name(name) {
}
* \inheritdoc
*/
virtual unsigned int valuePosition(const std::string & ) {
- throw new std::invalid_argument(this->describe() + "is void Option, so it does not have value part");
+ throw new std::invalid_argument(this->describe() + " is void Option, so it does not have value part");
}
};
}