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Remove embedded copy of getopt
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Julien BLACHE
parent
cfdb37c07c
commit
1c97e73351
1266
src/getopt.c
1266
src/getopt.c
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src/getopt.h
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src/getopt.h
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/* Declarations for getopt.
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Copyright (C) 1989-1994, 1996-1999, 2001 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 Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the 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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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _GETOPT_H
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#ifndef __need_getopt
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# define _GETOPT_H 1
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#endif
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/* If __GNU_LIBRARY__ is not already defined, either we are being used
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standalone, or this is the first header included in the source file.
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If we are being used with glibc, we need to include <features.h>, but
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that does not exist if we are standalone. So: if __GNU_LIBRARY__ is
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not defined, include <ctype.h>, which will pull in <features.h> for us
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if it's from glibc. (Why ctype.h? It's guaranteed to exist and it
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doesn't flood the namespace with stuff the way some other headers do.) */
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#if !defined __GNU_LIBRARY__
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# include <ctype.h>
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#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 `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 -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, `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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#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 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 (defined __STDC__ && __STDC__) || defined __cplusplus
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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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#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, `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 `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 `getopt'.
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The argument `--' causes premature termination of argument
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scanning, explicitly telling `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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`getopt'. */
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#if (defined __STDC__ && __STDC__) || defined __cplusplus
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# 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 getopt (int ___argc, char *const *___argv, const char *__shortopts);
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# else /* not __GNU_LIBRARY__ */
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extern int getopt ();
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# endif /* __GNU_LIBRARY__ */
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# ifndef __need_getopt
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extern int getopt_long (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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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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# endif
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#else /* not __STDC__ */
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extern int getopt ();
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# ifndef __need_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
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#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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#undef __need_getopt
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#endif /* getopt.h */
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