mirror of https://github.com/xiph/flac
185 lines
6.9 KiB
C
185 lines
6.9 KiB
C
/*
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NOTE:
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I cannot get the vanilla getopt code to work (i.e. compile only what
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is needed and not duplicate symbols found in the standard library)
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on all the platforms that FLAC supports. In particular the gating
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of code with the ELIDE_CODE #define is not accurate enough on systems
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that are POSIX but not glibc. If someone has a patch that works on
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GNU/Linux, Darwin, AND Solaris please submit it on the project page:
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https://sourceforge.net/p/flac/patches/
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In the meantime I have munged the global symbols and removed gates
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around code, while at the same time trying to touch the original as
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little as possible.
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*/
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/* Declarations for getopt.
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Copyright (C) 1989,90,91,92,93,94,96,97,98 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library 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 GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA. */
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#ifndef SHARE__GETOPT_H
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#define SHARE__GETOPT_H
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/*[JEC] was:#ifndef __need_getopt*/
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/*[JEC] was:# define _GETOPT_H 1*/
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/*[JEC] was:#endif*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* For communication from `share__getopt' to the caller.
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When `share__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 *share__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 `share__getopt'.
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On entry to `share__getopt', zero means this is the first call; initialize.
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When `share__getopt' returns -1, 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, `share__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 share__optind;
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/* Callers store zero here to inhibit the error message `share__getopt' prints
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for unrecognized options. */
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extern int share__opterr;
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/* Set to an option character which was unrecognized. */
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extern int share__optopt;
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/*[JEC] was:#ifndef __need_getopt */
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/* Describe the long-named options requested by the application.
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The LONG_OPTIONS argument to share__getopt_long or share__getopt_long_only is a vector
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of `struct share__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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share__no_argument (or 0) if the option does not take an argument,
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share__required_argument (or 1) if the option requires an argument,
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share__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 `share__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, `share__getopt'
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returns the contents of the `val' field. */
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struct share__option
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{
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# if defined __STDC__ && __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 share__option'. */
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# define share__no_argument 0
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# define share__required_argument 1
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# define share__optional_argument 2
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/*[JEC] was:#endif*/ /* need getopt */
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/* Get definitions and prototypes for functions to process the
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arguments in ARGV (ARGC of them, minus the program name) for
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options given in OPTS.
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Return the option character from OPTS just read. Return -1 when
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there are no more options. For unrecognized options, or options
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missing arguments, `share__optopt' is set to the option letter, and '?' is
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returned.
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The OPTS string is a list of characters which are recognized option
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letters, optionally followed by colons, specifying that that letter
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takes an argument, to be placed in `share__optarg'.
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If a letter in OPTS is followed by two colons, its argument is
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optional. This behavior is specific to the GNU `share__getopt'.
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The argument `--' causes premature termination of argument
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scanning, explicitly telling `share__getopt' that there are no more
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options.
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If OPTS begins with `--', then non-option arguments are treated as
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arguments to the option '\0'. This behavior is specific to the GNU
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`share__getopt'. */
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/*[JEC] was:#if defined __STDC__ && __STDC__*/
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/*[JEC] was:# ifdef __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 share__getopt (int argc, char *const *argv, const char *shortopts);
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/*[JEC] was:# else*/ /* not __GNU_LIBRARY__ */
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/*[JEC] was:extern int getopt ();*/
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/*[JEC] was:# endif*/ /* __GNU_LIBRARY__ */
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/*[JEC] was:# ifndef __need_getopt*/
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extern int share__getopt_long (int argc, char *const *argv, const char *shortopts,
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const struct share__option *longopts, int *longind);
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extern int share__getopt_long_only (int argc, char *const *argv,
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const char *shortopts,
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const struct share__option *longopts, int *longind);
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/* Internal only. Users should not call this directly. */
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extern int share___getopt_internal (int argc, char *const *argv,
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const char *shortopts,
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const struct share__option *longopts, int *longind,
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int long_only);
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/*[JEC] was:# endif*/
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/*[JEC] was:#else*/ /* not __STDC__ */
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/*[JEC] was:extern int getopt ();*/
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/*[JEC] was:# ifndef __need_getopt*/
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/*[JEC] was:extern int getopt_long ();*/
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/*[JEC] was:extern int getopt_long_only ();*/
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/*[JEC] was:extern int _getopt_internal ();*/
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/*[JEC] was:# endif*/
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/*[JEC] was:#endif*/ /* __STDC__ */
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#ifdef __cplusplus
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}
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#endif
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/* Make sure we later can get all the definitions and declarations. */
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/*[JEC] was:#undef __need_getopt*/
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#endif /* getopt.h */
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