monet_options.h

这个是内存数据库中的一个管理工具

#ifndef _MO_H_
#define _MO_H_

#include "monet_utils.h"
#ifndef HAVE_GETOPT_LONG
#  include "monet_getopt.h"
#else
# ifdef HAVE_GETOPT_H
#  include "getopt.h"
# endif
#endif

typedef enum opt_kind {
	opt_builtin = 0,
	opt_config = 1,
	opt_cmdline = 2
} opt_kind;

typedef struct opt {
	opt_kind kind;
	char *name;
	char *value;
} opt;

#ifdef __cplusplus
extern "C" {
#endif

/* mo_print_options will print the option set on stderr */
mutils_export void mo_print_options(opt *set, int setlen);

/* mo_find_option, finds the option with the given name in the option set
   (set,setlen). */
mutils_export char *mo_find_option(opt *set, int setlen, const char *name);

/* the option values can contain ${prefix} and ${exec_prefix}, these
   will be substituted using the mo_substitute function.  The return
   value is a newly allocated buffer, it is the caller's responsibility to free the buffer. */
mutils_export char *mo_substitute(opt *set, int setlen, char *name);

/* mo_system_config will add the options from the system config file
   (returns the new setlen) */
mutils_export int mo_system_config(opt **Set, int setlen);

/* mo_builtin_settings, will place the builtin settings into a new
   option set (returns the length of this set). */
mutils_export int mo_builtin_settings(opt **Set);

/* mo_add_option will add a single option to the option set 
   (returns new length) */
mutils_export int mo_add_option(opt **Set, int setlen, opt_kind kind, const char *name, const char *value);

/* mo_free_options will free the resouces take by the options set */
mutils_export void mo_free_options(opt *set, int setlen);

#ifdef __cplusplus
}
#endif
#endif