diff options
Diffstat (limited to 'include/getopt.h')
| -rw-r--r-- | include/getopt.h | 81 |
1 files changed, 59 insertions, 22 deletions
diff --git a/include/getopt.h b/include/getopt.h index 1e5db6c..f64de31 100644 --- a/include/getopt.h +++ b/include/getopt.h @@ -1,9 +1,9 @@ -/* declarations for getopt - Copyright (C) 1989 Free Software Foundation, Inc. +/* Declarations for getopt. + Copyright (C) 1989, 1990, 1991, 1992 Free Software Foundation, Inc. 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 1, or (at your option) + the Free Software Foundation; either version 2, or (at your option) any later version. This program is distributed in the hope that it will be useful, @@ -15,6 +15,9 @@ along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +#ifndef _GETOPT_H +#define _GETOPT_H 1 + /* For communication from `getopt' to the caller. When `getopt' finds an option that takes an argument, the argument value is returned here. @@ -43,34 +46,68 @@ extern int optind; extern int opterr; /* Describe the long-named options requested by the application. - _GETOPT_LONG_OPTIONS is a vector of `struct option' terminated by an - element containing a name which is zero. + 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: - 0 if the option does not take an argument, - 1 if the option requires an argument, - 2 if the option takes an optional argument. - If the field `flag' is nonzero, 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. */ + 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 { +#if __STDC__ + 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; int *flag; int val; }; -extern struct option *_getopt_long_options; - -/* Name of long-named option actually found. - Only changed when a long-named option is found. */ +/* Names for the values of the `has_arg' field of `struct option'. */ -extern char *_getopt_option_name; - -/* The index in GETOPT_LONG_OPTIONS of the long-named option found. - Only valid when a long-named option has been found by the most - recent call to `getopt'. */ - -extern int option_index; +enum _argtype +{ + no_argument, + required_argument, + optional_argument +}; +#if __STDC__ +extern int getopt (int argc, char *const *argv, const char *shortopts); +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); + +/* Internal only. Users should not call this directly. */ +extern int _getopt_internal (int argc, char *const *argv, + const char *shortopts, + const struct option *longopts, int *longind, + int long_only); +#else /* not __STDC__ */ +extern int getopt (); +extern int getopt_long (); +extern int getopt_long_only (); + +extern int _getopt_internal (); +#endif /* not __STDC__ */ + +#endif /* _GETOPT_H */ |