diff options
Diffstat (limited to 'posix/getopt.h')
| -rw-r--r-- | posix/getopt.h | 182 |
1 files changed, 4 insertions, 178 deletions
diff --git a/posix/getopt.h b/posix/getopt.h index fa6aa6be38..2b638658e3 100644 --- a/posix/getopt.h +++ b/posix/getopt.h @@ -17,168 +17,9 @@ <http://www.gnu.org/licenses/>. */ #ifndef _GETOPT_H +#define _GETOPT_H 1 -#ifndef __need_getopt -# define _GETOPT_H 1 -#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 - that does not exist if we are standalone. So: if __GNU_LIBRARY__ is - not defined, include <ctype.h>, which will pull in <features.h> for us - if it's from glibc. (Why ctype.h? It's guaranteed to exist and it - doesn't flood the namespace with stuff the way some other headers do.) */ -#if !defined __GNU_LIBRARY__ -# include <ctype.h> -#endif - -#ifndef __GNUC_PREREQ -# define __GNUC_PREREQ(maj, min) (0) -#endif - -#ifndef __THROW -# if defined __cplusplus && __GNUC_PREREQ (2,8) -# define __THROW throw () -# else -# define __THROW -# endif -#endif - -#ifndef __nonnull -# if __GNUC_PREREQ (3, 3) -# define __nonnull(params) __attribute__ ((__nonnull__ params)) -# else -# define __nonnull(params) -# endif -#endif - -#ifdef __cplusplus -extern "C" { -#endif - -/* For communication from 'getopt' to the caller. - When 'getopt' finds an option that takes an argument, - the argument value is returned here. - Also, when 'ordering' is RETURN_IN_ORDER, - each non-option ARGV-element is returned here. */ - -extern char *optarg; - -/* Index in ARGV of the next element to be scanned. - This is used for communication to and from the caller - and for communication between successive calls to 'getopt'. - - On entry to 'getopt', zero means this is the first call; initialize. - - When 'getopt' returns -1, this is the index of the first of the - non-option elements that the caller should itself scan. - - Otherwise, 'optind' communicates from one call to the next - how much of ARGV has been scanned so far. */ - -extern int optind; - -/* Callers store zero here to inhibit the error message 'getopt' prints - for unrecognized options. */ - -extern int opterr; - -/* Set to an option character which was unrecognized. */ - -extern int optopt; - -#ifndef __need_getopt -/* Describe the long-named options requested by the application. - The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector - of 'struct option' terminated by an element containing a name which is - zero. - - 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. - - 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 - left unchanged if the option is not found. - - To have a long-named option do something other than set an 'int' to - a compiled-in constant, such as set a value from 'optarg', set the - option's 'flag' field to zero and its 'val' field to a nonzero - value (the equivalent single-letter option character, if there is - one). For long options that have a zero 'flag' field, 'getopt' - returns the contents of the 'val' field. */ - -struct option -{ - const char *name; - /* 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; - int *flag; - int val; -}; - -/* Names for the values of the 'has_arg' field of 'struct option'. */ - -# define no_argument 0 -# define required_argument 1 -# define optional_argument 2 -#endif /* need getopt */ - - -/* Get definitions and prototypes for functions to process the - arguments in ARGV (ARGC of them, minus the program name) for - options given in OPTS. - - Return the option character from OPTS just read. Return -1 when - there are no more options. For unrecognized options, or options - missing arguments, 'optopt' is set to the option letter, and '?' is - returned. - - The OPTS string is a list of characters which are recognized option - letters, optionally followed by colons, specifying that that letter - takes an argument, to be placed in 'optarg'. - - If a letter in OPTS is followed by two colons, its argument is - optional. This behavior is specific to the GNU 'getopt'. - - The argument '--' causes premature termination of argument - scanning, explicitly telling 'getopt' that there are no more - options. - - If OPTS begins with '-', then non-option arguments are treated as - arguments to the option '\1'. This behavior is specific to the GNU - 'getopt'. If OPTS begins with '+', or POSIXLY_CORRECT is set in - the environment, then do not permute arguments. - - For standards compliance, the 'argv' argument has the type - char *const *, but this is inaccurate; if argument permutation is - enabled, the argv array (not the strings it points to) must be - writable. */ - -extern int getopt (int ___argc, char *const *___argv, const char *__shortopts) - __THROW __nonnull ((2, 3)); - -#if defined __need_getopt && defined __USE_POSIX2 \ - && !defined __USE_POSIX_IMPLICITLY && !defined __USE_GNU -/* The GNU getopt has more functionality than the standard version. The - additional functionality can be disable at runtime. This redirection - helps to also do this at runtime. */ -# ifdef __REDIRECT - extern int __REDIRECT_NTH (getopt, (int ___argc, char *const *___argv, - const char *__shortopts), - __posix_getopt); -# else -extern int __posix_getopt (int ___argc, char *const *___argv, - const char *__shortopts) - __THROW __nonnull ((2, 3)); -# define getopt __posix_getopt -# endif -#endif - -#ifndef __need_getopt +#include <features.h> /* The type of the 'argv' argument to getopt_long and getopt_long_only is properly 'char **', since both functions may write to the array @@ -189,22 +30,7 @@ extern int __posix_getopt (int ___argc, char *const *___argv, # define __getopt_argv_const const #endif -extern int getopt_long (int ___argc, char *__getopt_argv_const *___argv, - const char *__shortopts, - const struct option *__longopts, int *__longind) - __THROW __nonnull ((2, 3)); -extern int getopt_long_only (int ___argc, char *__getopt_argv_const *___argv, - const char *__shortopts, - const struct option *__longopts, int *__longind) - __THROW __nonnull ((2, 3)); - -#endif - -#ifdef __cplusplus -} -#endif - -/* Make sure we later can get all the definitions and declarations. */ -#undef __need_getopt +#include <bits/getopt_core.h> +#include <bits/getopt_ext.h> #endif /* getopt.h */ |