3 * @copy 2012 MinGW.org project
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6 * copy of this software and associated documentation files (the "Software"),
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10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice (including the next
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17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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22 * DEALINGS IN THE SOFTWARE.
24 /* Contributed by Keith Marshall <keithmarshall@users.sourceforge.net> */
27 #pragma GCC system_header
31 * Defines constants and function prototypes required to implement
32 * the `getopt', `getopt_long' and `getopt_long_only' APIs.
39 extern int optind; /* index of first non-option in argv */
40 extern int optopt; /* single option character, as parsed */
41 extern int opterr; /* flag to enable built-in diagnostics... */
42 /* (user may set to zero, to suppress) */
44 extern char *optarg; /* pointer to argument of current option */
46 extern int getopt( int, char * const [], const char * );
50 * BSD adds the non-standard `optreset' feature, for reinitialisation
51 * of `getopt' parsing. We support this feature, for applications which
52 * proclaim their BSD heritage, before including this header; however,
53 * to maintain portability, developers are advised to avoid it.
55 # define optreset __mingw_optreset
63 * POSIX requires the `getopt' API to be specified in `unistd.h';
64 * thus, `unistd.h' includes this header. However, we do not want
65 * to expose the `getopt_long' or `getopt_long_only' APIs, when
66 * included in this manner. Thus, close the standard __GETOPT_H__
67 * declarations block, and open an additional __GETOPT_LONG_H__
68 * specific block, only when *not* __UNISTD_H_SOURCED__, in which
69 * to declare the extended API.
71 #endif /* !defined(__GETOPT_H__) */
72 #if !defined(__UNISTD_H_SOURCED__) && !defined(__GETOPT_LONG_H__)
73 #define __GETOPT_LONG_H__
79 struct option /* specification for a long form option... */
81 const char *name; /* option name, without leading hyphens */
82 int has_arg; /* does it take an argument? */
83 int *flag; /* where to save its status, or NULL */
84 int val; /* its associated status value */
87 enum /* permitted values for its `has_arg' field... */
89 no_argument = 0, /* option never takes an argument */
90 required_argument, /* option always requires an argument */
91 optional_argument /* option may take an argument */
94 extern int getopt_long( int, char * const [], const char *, const struct option *, int * );
95 extern int getopt_long_only( int, char * const [], const char *, const struct option *, int * );
97 * Previous MinGW implementation had...
99 #ifndef HAVE_DECL_GETOPT
101 * ...for the long form API only; keep this for compatibility.
103 # define HAVE_DECL_GETOPT 1
110 #endif /* !defined(__UNISTD_H_SOURCED__) && !defined(__GETOPT_LONG_H__) */
111 /* $RCSfile: getopt.h,v $Revision: 1.4 $: end of file */