diff options
Diffstat (limited to 'contrib/groff/src/include/getopt.h')
| -rw-r--r-- | contrib/groff/src/include/getopt.h | 140 |
1 files changed, 93 insertions, 47 deletions
diff --git a/contrib/groff/src/include/getopt.h b/contrib/groff/src/include/getopt.h index 4283c35..a4e78cb 100644 --- a/contrib/groff/src/include/getopt.h +++ b/contrib/groff/src/include/getopt.h @@ -1,21 +1,21 @@ /* Declarations for getopt. - Copyright (C) 1989-1994, 1996-1999, 2001 Free Software Foundation, Inc. + Copyright (C) 1989-1994,1996-1999,2001,2003,2004 + Free Software Foundation, Inc. This file is part of the GNU C Library. - The GNU C Library is free software; you can redistribute it and/or - modify it under the terms of the GNU Lesser General Public - License as published by the Free Software Foundation; either - version 2.1 of the License, or (at your option) any later version. + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2, or (at your option) + any later version. - The GNU C Library is distributed in the hope that it will be useful, + This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Lesser General Public License for more details. + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. - You should have received a copy of the GNU Lesser General Public - License along with the GNU C Library; if not, write to the Free - Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA - 02111-1307 USA. */ + You should have received a copy of the GNU General Public License along + with this program; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifndef _GETOPT_H @@ -23,6 +23,64 @@ # define _GETOPT_H 1 #endif +/* Standalone applications should #define __GETOPT_PREFIX to an + identifier that prefixes the external functions and variables + defined in this header. When this happens, include the + headers that might declare getopt so that they will not cause + confusion if included after this file. Then systematically rename + identifiers so that they do not collide with the system functions + and variables. Renaming avoids problems with some compilers and + linkers. */ +#if defined __GETOPT_PREFIX && !defined __need_getopt +# include <stdlib.h> +# include <stdio.h> +# if HAVE_UNISTD_H +# include <unistd.h> +# endif +# undef __need_getopt +# undef getopt +# undef getopt_long +# undef getopt_long_only +# undef optarg +# undef opterr +# undef optind +# undef optopt +# define __GETOPT_CONCAT(x, y) x ## y +# define __GETOPT_XCONCAT(x, y) __GETOPT_CONCAT (x, y) +# define __GETOPT_ID(y) __GETOPT_XCONCAT (__GETOPT_PREFIX, y) +# define getopt __GETOPT_ID (getopt) +# define getopt_long __GETOPT_ID (getopt_long) +# define getopt_long_only __GETOPT_ID (getopt_long_only) +# define optarg __GETOPT_ID (optarg) +# define opterr __GETOPT_ID (opterr) +# define optind __GETOPT_ID (optind) +# define optopt __GETOPT_ID (optopt) +#endif + +/* Standalone applications get correct prototypes for getopt_long and + getopt_long_only; they declare "char **argv". libc uses prototypes + with "char *const *argv" that are incorrect because getopt_long and + getopt_long_only can permute argv; this is required for backward + compatibility (e.g., for LSB 2.0.1). + + This used to be `#if defined __GETOPT_PREFIX && !defined __need_getopt', + but it caused redefinition warnings if both unistd.h and getopt.h were + included, since unistd.h includes getopt.h having previously defined + __need_getopt. + + The only place where __getopt_argv_const is used is in definitions + of getopt_long and getopt_long_only below, but these are visible + only if __need_getopt is not defined, so it is quite safe to rewrite + the conditional as follows: +*/ +#if !defined __need_getopt +# if defined __GETOPT_PREFIX +# define __getopt_argv_const /* empty */ +# else +# define __getopt_argv_const const +# endif +#endif + /* If __GNU_LIBRARY__ is not already defined, either we are being used standalone, or this is the first header included in the source file. If we are being used with glibc, we need to include <features.h>, but @@ -34,6 +92,17 @@ # include <ctype.h> #endif +#ifndef __THROW +# ifndef __GNUC_PREREQ +# define __GNUC_PREREQ(maj, min) (0) +# endif +# if defined __cplusplus && __GNUC_PREREQ (2,8) +# define __THROW throw () +# else +# define __THROW +# endif +#endif + #ifdef __cplusplus extern "C" { #endif @@ -78,7 +147,7 @@ extern int optopt; The field `has_arg' is: no_argument (or 0) if the option does not take an argument, required_argument (or 1) if the option requires an argument, - optional_argument (or 2) if the option takes an optional argument. + optional_argument (or 2) if the option takes an optional argument. If the field `flag' is not NULL, it points to a variable that is set to the value given in the field `val' when the option is found, but @@ -93,11 +162,7 @@ extern int optopt; struct option { -# if (defined __STDC__ && __STDC__) || defined __cplusplus const char *name; -# else - char *name; -# endif /* has_arg can't be an enum because some compilers complain about type mismatches in all the code that assumes it is an int. */ int has_arg; @@ -137,39 +202,20 @@ struct option arguments to the option '\0'. This behavior is specific to the GNU `getopt'. */ -#if (defined __STDC__ && __STDC__) || defined __cplusplus -# ifdef __GNU_LIBRARY__ -/* Many other libraries have conflicting prototypes for getopt, with - differences in the consts, in stdlib.h. To avoid compilation - errors, only prototype getopt for the GNU C library. */ -extern int getopt (int ___argc, char *const *___argv, const char *__shortopts); -# else /* not __GNU_LIBRARY__ */ -extern int getopt (); -# endif /* __GNU_LIBRARY__ */ - -# ifndef __need_getopt -extern int getopt_long (int ___argc, char *const *___argv, - const char *__shortopts, - const struct option *__longopts, int *__longind); -extern int getopt_long_only (int ___argc, char *const *___argv, - const char *__shortopts, - const struct option *__longopts, int *__longind); +extern int getopt (int ___argc, char *const *___argv, const char *__shortopts) + __THROW; -/* Internal only. Users should not call this directly. */ -extern int _getopt_internal (int ___argc, char *const *___argv, +#ifndef __need_getopt +extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv, + const char *__shortopts, + const struct option *__longopts, int *__longind) + __THROW; +extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv, const char *__shortopts, - const struct option *__longopts, int *__longind, - int __long_only); -# endif -#else /* not __STDC__ */ -extern int getopt (); -# ifndef __need_getopt -extern int getopt_long (); -extern int getopt_long_only (); + const struct option *__longopts, int *__longind) + __THROW; -extern int _getopt_internal (); -# endif -#endif /* __STDC__ */ +#endif #ifdef __cplusplus } |
