wingetopt.h

#ifndef __GETOPT_H__
 
#define __GETOPT_H__
 
/* All the headers include this file. */
#include <crtdefs.h>
 
#ifdef __cplusplus
extern "C" {
#endif
 
extern int optind;              /* index of first non-option in argv      */
extern int optopt;              /* single option character, as parsed     */
extern int opterr;              /* flag to enable built-in diagnostics... */
                                /* (user may set to zero, to suppress)    */
 
extern char *optarg;            /* pointer to argument of current option  */
 
extern int getopt(int nargc, char * const *nargv, const char *options);
 
#ifdef _BSD_SOURCE
/*
 * BSD adds the non-standard `optreset' feature, for reinitialisation
 * of `getopt' parsing.  We support this feature, for applications which
 * proclaim their BSD heritage, before including this header; however,
 * to maintain portability, developers are advised to avoid it.
 */
# define optreset  __mingw_optreset
extern int optreset;
#endif
#ifdef __cplusplus
}
#endif
/*
 * POSIX requires the `getopt' API to be specified in `unistd.h';
 * thus, `unistd.h' includes this header.  However, we do not want
 * to expose the `getopt_long' or `getopt_long_only' APIs, when
 * included in this manner.  Thus, close the standard __GETOPT_H__
 * declarations block, and open an additional __GETOPT_LONG_H__
 * specific block, only when *not* __UNISTD_H_SOURCED__, in which
 * to declare the extended API.
 */
#endif /* !defined(__GETOPT_H__) */
 
#if !defined(__UNISTD_H_SOURCED__) && !defined(__GETOPT_LONG_H__)
#define __GETOPT_LONG_H__
 
#ifdef __cplusplus
extern "C" {
#endif
 
struct option             /* specification for a long form option...      */
{
  const char *name;             /* option name, without leading hyphens */
  int         has_arg;          /* does it take an argument?            */
  int        *flag;             /* where to save its status, or NULL    */
  int         val;              /* its associated status value          */
};
 
enum                    /* permitted values for its `has_arg' field...  */
{
  no_argument = 0,              /* option never takes an argument       */
  required_argument,            /* option always requires an argument   */
  optional_argument             /* option may take an argument          */
};
 
extern int getopt_long(int nargc, char * const *nargv, const char *options,
    const struct option *long_options, int *idx);
extern int getopt_long_only(int nargc, char * const *nargv, const char *options,
    const struct option *long_options, int *idx);
/*
 * Previous MinGW implementation had...
 */
#ifndef HAVE_DECL_GETOPT
/*
 * ...for the long form API only; keep this for compatibility.
 */
# define HAVE_DECL_GETOPT       1
#endif
 
#ifdef __cplusplus
}
#endif
 
#endif /* !defined(__UNISTD_H_SOURCED__) && !defined(__GETOPT_LONG_H__) */