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https://github.com/Sneed-Group/Poodletooth-iLand
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125 lines
4.1 KiB
C
125 lines
4.1 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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#ifndef _GNU_GETOPT_H
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#define _GNU_GETOPT_H 1
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/* We don't want to collide with a system getopt() it if it exists.
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Redefine our symbols accordingly. */
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#define getopt gnu_getopt
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#define optind gnu_optind
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#define opterr gnu_opterr
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#define optopt gnu_optopt
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#define optarg gnu_optarg
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#define getopt_long gnu_getopt_long
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#define getopt_long_only gnu_getopt_long_only
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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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extern int
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getopt (int argc, char *const *argv, const char *shortopts);
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extern int
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getopt_long (int argc, char *const *argv, const char *shortopts,
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const struct option *long_options, int *opt_index);
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extern int
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getopt_long_only (int argc, char *const *argv,
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const char *shortopts,
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const struct option *long_options,
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int *opt_index);
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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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#ifdef __cplusplus
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}
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#endif
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#endif /* _GETOPT_H */
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