CommandLineParser.h++

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#ifndef __libquark_util_CommandLineParser_hxx
#define __libquark_util_CommandLineParser_hxx

#include <QString>
#include <QStringList>
#include <QVector>

#include <quark/Quark.h++>

namespace quark {
namespace util {

class LIBQUARK_API CommandLineParser
{
  public:

  CommandLineParser(QStringList args);

  virtual ~CommandLineParser();

  bool registerOption(QChar opt, const QString &longOpt,
                      const QString &argName = QString(),
                      const QString &description = QString());

  bool parseArguments();

  void printUsage();

  protected:

  virtual void processOption(QChar opt, const QString &longOpt,
                             const QString &arg) = 0;

  virtual bool processNonOptionArguments(QStringList args) = 0;

  virtual bool handleMissingArgument(QChar opt, const QString &longOpt);

  virtual bool handleInvalidOption(QChar opt, const QString &longOpt);

  private:

  QString optionToString(QChar opt, const QString &longOpt) const;

  struct Option
  {
    Option();
    Option(QChar opt, const QString &longOpt, const QString &argName,
           const QString &description);
    QChar opt;
    QString longOpt;
    QString argName;
    QString description;

    bool takesArg() const;
  };

  const Option* findOption(QChar opt) const;
  const Option* findOption(const QString &longOpt) const;

  QString _program;
  QVector<Option> _options;
  QStringList _args;
  QStringList _nonOptionArgs;
};

} // namespace util
} // namespace quark

#endif // __libquark_util_CommandLineParser_hxx