38a1326cad
our patch to look a little more like NetBSD's, and has the nice characteristic that the object code is exactly the same after the change as before it (even in patch.c and pch.c, which have pesky 'assert' statements in them). Reviewed by: /sbin/md5 on i386, alpha, sparc64 MFC after: 3 days
134 lines
4.4 KiB
C
134 lines
4.4 KiB
C
/* Declarations for getopt.
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Copyright (C) 1989, 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2, or (at your option) any
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later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
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/*
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* $FreeBSD$
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*/
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#ifndef _GETOPT_H
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#define _GETOPT_H 1
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* For communication from `getopt' to the caller.
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When `getopt' finds an option that takes an argument,
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the argument value is returned here.
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Also, when `ordering' is RETURN_IN_ORDER,
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each non-option ARGV-element is returned here. */
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extern char *optarg;
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/* Index in ARGV of the next element to be scanned.
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This is used for communication to and from the caller
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and for communication between successive calls to `getopt'.
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On entry to `getopt', zero means this is the first call; initialize.
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When `getopt' returns EOF, this is the index of the first of the
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non-option elements that the caller should itself scan.
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Otherwise, `optind' communicates from one call to the next
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how much of ARGV has been scanned so far. */
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extern int optind;
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/* Callers store zero here to inhibit the error message `getopt' prints
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for unrecognized options. */
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extern int opterr;
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/* Set to an option character which was unrecognized. */
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extern int optopt;
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/* Describe the long-named options requested by the application.
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The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
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of `struct option' terminated by an element containing a name which is
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zero.
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The field `has_arg' is:
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no_argument (or 0) if the option does not take an argument,
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required_argument (or 1) if the option requires an argument,
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optional_argument (or 2) if the option takes an optional argument.
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If the field `flag' is not NULL, it points to a variable that is set
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to the value given in the field `val' when the option is found, but
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left unchanged if the option is not found.
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To have a long-named option do something other than set an `int' to
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a compiled-in constant, such as set a value from `optarg', set the
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option's `flag' field to zero and its `val' field to a nonzero
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value (the equivalent single-letter option character, if there is
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one). For long options that have a zero `flag' field, `getopt'
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returns the contents of the `val' field. */
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struct option
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{
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#if __STDC__
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const char *name;
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#else
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char *name;
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#endif
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/* has_arg can't be an enum because some compilers complain about
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type mismatches in all the code that assumes it is an int. */
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int has_arg;
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int *flag;
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int val;
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};
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/* Names for the values of the `has_arg' field of `struct option'. */
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#define no_argument 0
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#define required_argument 1
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#define optional_argument 2
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#if __STDC__
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#if defined(__GNU_LIBRARY__)
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/* Many other libraries have conflicting prototypes for getopt, with
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differences in the consts, in stdlib.h. To avoid compilation
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errors, only prototype getopt for the GNU C library. */
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extern int getopt (int argc, char *const *argv, const char *shortopts);
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#else /* not __GNU_LIBRARY__ */
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extern int getopt(int _argc, char *const *_argv, const char *_optstring);
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#endif /* not __GNU_LIBRARY__ */
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extern int getopt_long (int argc, char *const *argv, const char *shortopts,
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const struct option *longopts, int *longind);
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extern int getopt_long_only (int argc, char *const *argv,
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const char *shortopts,
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const struct option *longopts, int *longind);
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/* Internal only. Users should not call this directly. */
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extern int _getopt_internal (int argc, char *const *argv,
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const char *shortopts,
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const struct option *longopts, int *longind,
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int long_only);
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#else /* not __STDC__ */
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extern int getopt ();
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extern int getopt_long ();
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extern int getopt_long_only ();
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extern int _getopt_internal ();
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#endif /* not __STDC__ */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _GETOPT_H */
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