getopt.h (3097B)
1 #ifndef __GETOPT_H__ 2 /** 3 * DISCLAIMER 4 * This file has no copyright assigned and is placed in the Public Domain. 5 * This file is part of the mingw-w64 runtime package. 6 * 7 * The mingw-w64 runtime package and its code is distributed in the hope that it 8 * will be useful but WITHOUT ANY WARRANTY. ALL WARRANTIES, EXPRESSED OR 9 * IMPLIED ARE HEREBY DISCLAIMED. This includes but is not limited to 10 * warranties of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 11 */ 12 13 #define __GETOPT_H__ 14 15 /* All the headers include this file. */ 16 #ifdef _WIN32 17 #include <crtdefs.h> 18 #endif 19 20 #ifdef __cplusplus 21 extern "C" { 22 #endif 23 24 extern int optind; /* index of first non-option in argv */ 25 extern int optopt; /* single option character, as parsed */ 26 extern int opterr; /* flag to enable built-in diagnostics... */ 27 /* (user may set to zero, to suppress) */ 28 29 extern char *optarg; /* pointer to argument of current option */ 30 31 extern int getopt(int nargc, char * const *nargv, const char *options); 32 33 #ifdef _BSD_SOURCE 34 /* 35 * BSD adds the non-standard `optreset' feature, for reinitialisation 36 * of `getopt' parsing. We support this feature, for applications which 37 * proclaim their BSD heritage, before including this header; however, 38 * to maintain portability, developers are advised to avoid it. 39 */ 40 # define optreset __mingw_optreset 41 extern int optreset; 42 #endif 43 #ifdef __cplusplus 44 } 45 #endif 46 /* 47 * POSIX requires the `getopt' API to be specified in `unistd.h'; 48 * thus, `unistd.h' includes this header. However, we do not want 49 * to expose the `getopt_long' or `getopt_long_only' APIs, when 50 * included in this manner. Thus, close the standard __GETOPT_H__ 51 * declarations block, and open an additional __GETOPT_LONG_H__ 52 * specific block, only when *not* __UNISTD_H_SOURCED__, in which 53 * to declare the extended API. 54 */ 55 #if !defined(__UNISTD_H_SOURCED__) && !defined(__GETOPT_LONG_H__) 56 #define __GETOPT_LONG_H__ 57 58 #ifdef __cplusplus 59 extern "C" { 60 #endif 61 62 struct option /* specification for a long form option... */ 63 { 64 const char *name; /* option name, without leading hyphens */ 65 int has_arg; /* does it take an argument? */ 66 int *flag; /* where to save its status, or NULL */ 67 int val; /* its associated status value */ 68 }; 69 70 enum /* permitted values for its `has_arg' field... */ 71 { 72 no_argument = 0, /* option never takes an argument */ 73 required_argument, /* option always requires an argument */ 74 optional_argument /* option may take an argument */ 75 }; 76 77 extern int getopt_long(int nargc, char * const *nargv, const char *options, 78 const struct option *long_options, int *idx); 79 extern int getopt_long_only(int nargc, char * const *nargv, const char *options, 80 const struct option *long_options, int *idx); 81 /* 82 * Previous MinGW implementation had... 83 */ 84 #ifndef HAVE_DECL_GETOPT 85 /* 86 * ...for the long form API only; keep this for compatibility. 87 */ 88 # define HAVE_DECL_GETOPT 1 89 #endif 90 91 #ifdef __cplusplus 92 } 93 #endif 94 95 #endif /* !defined(__UNISTD_H_SOURCED__) && !defined(__GETOPT_LONG_H__) */ 96 97 #endif /* !defined(__GETOPT_H__) */