getparam.h

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#ifndef XGETPARAM_H
#define XGETPARAM_H

#include <stddef.h>

/* argument is required when OPTION_ARG_YES is set and OPTION_ARG_MAYBE not, if none is specified no argument will be accepted */
#define PARAM_OPTION_ARG_YES 16
#define PARAM_OPTION_ARG_MAYBE (8 + PARAM_OPTION_ARG_YES)

#define PARAM_OPTION_BOOL (1 + PARAM_OPTION_ARG_MAYBE)
#define ARG_TYPE_INT (2 + PARAM_OPTION_ARG_YES)
#define ARG_TYPE_STR (4 + PARAM_OPTION_ARG_YES)
#define ARG_TYPE_DOUBLE (ARG_TYPE_INT | ARG_TYPE_STR)

#define PARAM_ACTION_FUNC 64
#define PARAM_ACTION_VAR 32

/* getparam options */
#define FAIL_ON_UNKNOWN 1 << 0

typedef struct
{
        char *longopt;
        char shortopt;
        char *configname;
        short int type;
        void *ptr;
        void *default_value;
        char *help_text;
} option_t;

typedef int (*option_func_t)(option_t, void *, option_t **);

void print_options_help(option_t *o);
void print_options_config(option_t *o);
size_t add_config_options(option_t **o_in, option_t add[]);
int getparam(option_t **o, int argc, char **argv);
int readconfig(option_t **o, const char *file, int options);

#endif /* XGETPARAM_H */