1 /* -*- buffer-read-only: t -*- vi: set ro: */ 2 /* DO NOT EDIT! GENERATED AUTOMATICALLY! */ 3 /* Declarations for getopt (GNU extensions). 4 Copyright (C) 1989-2019 Free Software Foundation, Inc. 5 This file is part of the GNU C Library and is also part of gnulib. 6 Patches to this file should be submitted to both projects. 7 8 The GNU C Library is free software; you can redistribute it and/or 9 modify it under the terms of the GNU General Public 10 License as published by the Free Software Foundation; either 11 version 3 of the License, or (at your option) any later version. 12 13 The GNU C Library is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 16 General Public License for more details. 17 18 You should have received a copy of the GNU General Public 19 License along with the GNU C Library; if not, see 20 <https://www.gnu.org/licenses/>. */ 21 22 #ifndef _GETOPT_EXT_H 23 #define _GETOPT_EXT_H 1 24 25 /* This header should not be used directly; include getopt.h instead. 26 Unlike most bits headers, it does not have a protective #error, 27 because the guard macro for getopt.h in gnulib is not fixed. */ 28 29 __BEGIN_DECLS 30 31 /* Describe the long-named options requested by the application. 32 The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector 33 of 'struct option' terminated by an element containing a name which is 34 zero. 35 36 The field 'has_arg' is: 37 no_argument (or 0) if the option does not take an argument, 38 required_argument (or 1) if the option requires an argument, 39 optional_argument (or 2) if the option takes an optional argument. 40 41 If the field 'flag' is not NULL, it points to a variable that is set 42 to the value given in the field 'val' when the option is found, but 43 left unchanged if the option is not found. 44 45 To have a long-named option do something other than set an 'int' to 46 a compiled-in constant, such as set a value from 'optarg', set the 47 option's 'flag' field to zero and its 'val' field to a nonzero 48 value (the equivalent single-letter option character, if there is 49 one). For long options that have a zero 'flag' field, 'getopt' 50 returns the contents of the 'val' field. */ 51 52 struct option 53 { 54 const char *name; 55 /* has_arg can't be an enum because some compilers complain about 56 type mismatches in all the code that assumes it is an int. */ 57 int has_arg; 58 int *flag; 59 int val; 60 }; 61 62 /* Names for the values of the 'has_arg' field of 'struct option'. */ 63 64 #define no_argument 0 65 #define required_argument 1 66 #define optional_argument 2 67 68 extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv, 69 const char *__shortopts, 70 const struct option *__longopts, int *__longind) 71 __THROW _GL_ARG_NONNULL ((2, 3)); 72 extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv, 73 const char *__shortopts, 74 const struct option *__longopts, int *__longind) 75 __THROW _GL_ARG_NONNULL ((2, 3)); 76 77 __END_DECLS 78 79 #endif /* _GETOPT_EXT_H */ 80