/* Getopt for GNU.
* NOTE: getopt is now part of the C library, so if you don't know what
* "Keep this file name-space clean" means, talk to drepper@gnu.org
* before changing it!
*
* Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98
* Free Software Foundation, Inc.
*
* The GNU C Library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* The GNU C Library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with the GNU C Library; see the file COPYING.LIB. If not,
* write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA. */
/* This tells Alpha OSF/1 not to define a getopt prototype in <stdio.h>.
* Ditto for AIX 3.2 and <stdlib.h>. */
#ifndef _NO_PROTO
# define _NO_PROTO
#endif
#include "config.h"
#if !defined __STDC__ || !__STDC__
/* This is a separate conditional since some stdc systems
* reject `defined (const)'. */
# ifndef const
# define const
# endif
#endif
#include <stdio.h>
/* Comment out all this code if we are using the GNU C Library, and are not
* actually compiling the library itself. This code is part of the GNU C
* Library, but also included in many other GNU distributions. Compiling
* and linking in this code is a waste when using the GNU C library
* (especially if it is a shared library). Rather than having every GNU
* program understand `configure --with-gnu-libc' and omit the object files,
* it is simpler to just do this in the source for each such file. */
#define GETOPT_INTERFACE_VERSION 2
#if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
# include <gnu-versions.h>
# if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
# define ELIDE_CODE
# endif
#endif
#ifndef ELIDE_CODE
/* This needs to come after some library #include
* to get __GNU_LIBRARY__ defined. */
#ifdef __GNU_LIBRARY__
/* Don't include stdlib.h for non-GNU C libraries because some of them
* contain conflicting prototypes for getopt. */
# include <stdlib.h>
# include <unistd.h>
#endif /* GNU C library. */
#ifdef VMS
# include <unixlib.h>
# if HAVE_STRING_H - 0
# include <string.h>
# endif
#endif
#ifndef _
/* This is for other GNU distributions with internationalized messages.
* When compiling libc, the _ macro is predefined. */
# ifdef HAVE_LIBINTL_H
# include <libintl.h>
# define _(msgid) gettext (msgid)
# else
# define _(msgid) (msgid)
# endif
#endif
/* This version of `getopt' appears to the caller like standard Unix `getopt'
* but it behaves differently for the user, since it allows the user
* to intersperse the options with the other arguments.
*
* As `getopt' works, it permutes the elements of ARGV so that,
* when it is done, all the options precede everything else. Thus
* all application programs are extended to handle flexible argument order.
*
* Setting the environment variable POSIXLY_CORRECT disables permutation.
* Then the behavior is completely standard.
*
* GNU application programs can use a third alternative mode in which
* they can distinguish the relative order of options and other arguments. */
#include "getopt.h"
/* For communication from `getopt' to the caller.
* When `getopt' finds an option that takes an argument,
* the argument value is returned here.
* Also, when `ordering' is RETURN_IN_ORDER,
* each non-option ARGV-element is returned here. */
char *optarg = NULL;
/* Index in ARGV of the next element to be scanned.
* This is used for communication to and from the caller
* and for communication between successive calls to `getopt'.
*
* On entry to `getopt', zero means this is the first call; initialize.
*
* When `getopt' returns -1, this is the index of the first of the
* non-option elements that the caller should itself scan.
*
* Otherwise, `optind' communicates from one call to the next
* how much of ARGV has been scanned so far. */
/* 1003.2 says this must be 1 before any call. */
int optind = 1;
/* Formerly, initialization of getopt depended on optind==0, which
* causes problems with re-calling getopt as programs generally don't
* know that. */
int __getopt_initialized = 0;
/* The next char to be scanned in the option-element
* in which the last option character we returned was found.
* This allows us to pick up the scan where we left off.
*
* If this is zero, or a null string, it means resume the scan
* by advancing to the next ARGV-element. */
static char *nextchar;
/* Callers store zero here to inhibit the error message
* for unrecognized options. */
int opterr = 1;
/* Set to an option character which was unrecognized.
* This must be initialized on some systems to avoid linking in the
* system's own getopt implementation. */
int optopt = '?';
/* Describe how to deal with options that follow non-option ARGV-elements.
*
* If the caller did not specify anything,
* the default is REQUIRE_ORDER if the environment variable
* POSIXLY_CORRECT is defined, PERMUTE otherwise.
*
* REQUIRE_ORDER means don't recognize them as options;
* stop option processing when the first non-option is seen.
* This is what Unix does.
* This mode of operation is selected by either setting the environment
* variable POSIXLY_CORRECT, or using `+' as the first character
* of the list of option characters.
*
* PERMUTE is the default. We permute the contents of ARGV as we scan,
* so that eventually all the non-options are at the end. This allows options
* to be given in any order, even with programs that were not written to
* expect this.
*
* RETURN_IN_ORDER is an option available to programs that were written
* to expect options and other ARGV-elements in any order and that care about
* the ordering of the two. We describe each non-option ARGV-element
* as if it were the argument of an option with character code 1.
* Using `-' as the first character of the list of option characters
* selects this mode of operation.
*
* The special argument `--' forces an end of option-scanning regardless
* of the value of `ordering'. In the case of RETURN_IN_ORDER, only
* `--' can cause `getopt' to return -1 with `optind' != ARGC. */
static enum {
REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
} ordering;
/* Value of POSIXLY_CORRECT environment variable. */
static char *posixly_correct;
#ifdef __GNU_LIBRARY__
/* We want to avoid inclusion of string.h with non-GNU libraries
* because there are many ways it can cause trouble.
* On some systems, it contains special magic macros that don't work
* in GCC. */
# include <string.h>
# define my_index strchr
#else
# if HAVE_STRING_H
# include <string.h>
# else
# include <strings.h>
# endif
/* Avoid depending on library functions or files
* whose names are inconsistent. */
#ifndef getenv
extern char *getenv();
#endif
static char *my_index(str, chr)
const char *str;
int chr;
{
while (*str) {
if (*str == chr)
return (char *) str;
str++;
}
return 0;
}
/* If using GCC, we can safely declare strlen this way.
* If not using GCC, it is ok not to declare it. */
#ifdef __GNUC__
/* Note that Motorola Delta 68k R3V7 comes with GCC but not stddef.h.
* That was relevant to code that was here before. */
# if (!defined __STDC__ || !__STDC__) && !defined strlen
/* gcc with -traditional declares the built-in strlen to return int,
* and has done so at least since version 2.4.5. -- rms. */
extern int strlen(const char *);
# endif /* not __STDC__ */
#endif /* __GNUC__ */
#endif /* not __GNU_LIBRARY__ */
/* Handle permutation of arguments. */
/* Describe the part of ARGV that contains non-options that have
* been skipped. `first_nonopt' is the index in ARGV of the first of them;
* `last_nonopt' is the index after the last of them. */
static int first_nonopt;
static int last_nonopt;
#ifdef _LIBC
/* Bash 2.0 gives us an environment variable containing flags
* indicating ARGV elements that should not be considered arguments. */
/* Defined in getopt_init.c */
extern char *__getopt_nonoption_flags;
static int nonoption_flags_max_len;
static int nonoption_flags_len;
static int original_argc;
static char *const *original_argv;
/* Make sure the environment variable bash 2.0 puts in the environment
* is valid for the getopt call we must make sure that the ARGV passed
* to getopt is that one passed to the process. */
static void
__attribute__ ((unused))
store_args_and_env(int argc, char *const *argv)
{
/* XXX This is no good solution. We should rather copy the args so
* that we can compare them later. But we must not use malloc(3). */
original_argc = argc;
original_argv = argv;
}
# ifdef text_set_element
text_set_element(__libc_subinit, store_args_and_env);
# endif /* text_set_element */
# define SWAP_FLAGS(ch1, ch2) \
if (nonoption_flags_len > 0) \
{ \
char __tmp = __getopt_nonoption_flags[ch1]; \
__getopt_nonoption_flags[ch1] = __getopt_nonoption_flags[ch2]; \
__getopt_nonoption_flags[ch2] = __tmp; \
}
#else /* !_LIBC */
# define SWAP_FLAGS(ch1, ch2)
#endif /* _LIBC */
/* Exchange two adjacent subsequences of ARGV.
* One subsequence is elements [first_nonopt,last_nonopt)
* which contains all the non-options that have been skipped so far.
* The other is elements [last_nonopt,optind), which contains all
* the options processed since those non-options were skipped.
*
* `first_nonopt' and `last_nonopt' are relocated so that they describe
* the new indices of the non-options in ARGV after they are moved. */
#if defined __STDC__ && __STDC__
static void exchange(char **);
#endif
static void exchange(argv)
char **argv;
{
int bottom = first_nonopt;
int middle = last_nonopt;
int top = optind;
char *tem;
/* Exchange the shorter segment with the far end of the longer segment.
* That puts the shorter segment into the right place.
* It leaves the longer segment in the right place overall,
* but it consists of two parts that need to be swapped next. */
#ifdef _LIBC
/* First make sure the handling of the `__getopt_nonoption_flags'
* string can work normally. Our top argument must be in the range
* of the string. */
if (nonoption_flags_len > 0 && top >= nonoption_flags_max_len) {
/* We must extend the array. The user plays games with us and
* presents new arguments. */
char *new_str = malloc(top + 1);
if (new_str == NULL)
nonoption_flags_len = nonoption_flags_max_len = 0;
else {
memset(__mempcpy(new_str, __getopt_nonoption_flags,
nonoption_flags_max_len), '\0', top + 1 - nonoption_flags_max_len);
nonoption_flags_max_len = top + 1;
__getopt_nonoption_flags = new_str;
}
}
#endif
while (top > middle && middle > bottom) {
if (top - middle > middle - bottom) {
/* Bottom segment is the short one. */
int len = middle - bottom;
register int i;
/* Swap it with the top part of the top segment. */
for (i = 0; i < len; i++) {
tem = argv[bottom + i];
argv[bottom + i] = argv[top - (middle - bottom) + i];
argv[top - (middle - bottom) + i] = tem;
SWAP_FLAGS(bottom + i, top - (middle - bottom) + i);
}
/* Exclude the moved bottom segment from further swapping. */
top -= len;
} else {
/* Top segment is the short one. */
int len = top - middle;
register int i;
/* Swap it with the bottom part of the bottom segment. */
for (i = 0; i < len; i++) {
tem = argv[bottom + i];
argv[bottom + i] = argv[middle + i];
argv[middle + i] = tem;
SWAP_FLAGS(bottom + i, middle + i);
}
/* Exclude the moved top segment from further swapping. */
bottom += len;
}
}
/* Update records for the slots the non-options now occupy. */
first_nonopt += (optind - last_nonopt);
last_nonopt = optind;
}
/* Initialize the internal data when the first call is made. */
#if defined __STDC__ && __STDC__
static const char *_getopt_initialize(int, char *const *, const char *);
#endif
static const char *_getopt_initialize(argc, argv, optstring)
int argc;
char *const *argv;
const char *optstring;
{
/* Start processing options with ARGV-element 1 (since ARGV-element 0
* is the program name); the sequence of previously skipped
* non-option ARGV-elements is empty. */
first_nonopt = last_nonopt = optind;
nextchar = NULL;
posixly_correct = getenv("POSIXLY_CORRECT");
/* Determine how to handle the ordering of options and nonoptions. */
if (optstring[0] == '-') {
ordering = RETURN_IN_ORDER;
++optstring;
} else if (optstring[0] == '+') {
ordering = REQUIRE_ORDER;
++optstring;
} else if (posixly_correct != NULL)
ordering = REQUIRE_ORDER;
else
ordering = PERMUTE;
#ifdef _LIBC
if (posixly_correct == NULL && argc == original_argc && argv == original_argv) {
if (nonoption_flags_max_len == 0) {
if (__getopt_nonoption_flags == NULL || __getopt_nonoption_flags[0] == '\0')
nonoption_flags_max_len = -1;
else {
const char *orig_str = __getopt_nonoption_flags;
int len = nonoption_flags_max_len = strlen(orig_str);
if (nonoption_flags_max_len < argc)
nonoption_flags_max_len = argc;
__getopt_nonoption_flags = (char *) malloc(nonoption_flags_max_len);
if (__getopt_nonoption_flags == NULL)
nonoption_flags_max_len = -1;
else
memset(__mempcpy(__getopt_nonoption_flags, orig_str, len),
'\0', nonoption_flags_max_len - len);
}
}
nonoption_flags_len = nonoption_flags_max_len;
} else
nonoption_flags_len = 0;
#endif
return optstring;
}
/* Scan elements of ARGV (whose length is ARGC) for option characters
* given in OPTSTRING.
*
* If an element of ARGV starts with '-', and is not exactly "-" or "--",
* then it is an option element. The characters of this element
* (aside from the initial '-') are option characters. If `getopt'
* is called repeatedly, it returns successively each of the option characters
* from each of the option elements.
*
* If `getopt' finds another option character, it returns that character,
* updating `optind' and `nextchar' so that the next call to `getopt' can
* resume the scan with the following option character or ARGV-element.
*
* If there are no more option characters, `getopt' returns -1.
* Then `optind' is the index in ARGV of the first ARGV-element
* that is not an option. (The ARGV-elements have been permuted
* so that those that are not options now come last.)
*
* OPTSTRING is a string containing the legitimate option characters.
* If an option character is seen that is not listed in OPTSTRING,
* return '?' after printing an error message. If you set `opterr' to
* zero, the error message is suppressed but we still return '?'.
*
* If a char in OPTSTRING is followed by a colon, that means it wants an arg,
* so the following text in the same ARGV-element, or the text of the following
* ARGV-element, is returned in `optarg'. Two colons mean an option that
* wants an optional arg; if there is text in the current ARGV-element,
* it is returned in `optarg', otherwise `optarg' is set to zero.
*
* If OPTSTRING starts with `-' or `+', it requests different methods of
* handling the non-option ARGV-elements.
* See the comments about RETURN_IN_ORDER and REQUIRE_ORDER, above.
*
* Long-named options begin with `--' instead of `-'.
* Their names may be abbreviated as long as the abbreviation is unique
* or is an exact match for some defined option. If they have an
* argument, it follows the option name in the same ARGV-element, separated
* from the option name by a `=', or else the in next ARGV-element.
* When `getopt' finds a long-named option, it returns 0 if that option's
* `flag' field is nonzero, the value of the option's `val' field
* if the `flag' field is zero.
*
* The elements of ARGV aren't really const, because we permute them.
* But we pretend they're const in the prototype to be compatible
* with other systems.
*
* LONGOPTS is a vector of `struct option' terminated by an
* element containing a name which is zero.
*
* LONGIND returns the index in LONGOPT of the long-named option found.
* It is only valid when a long-named option has been found by the most
* recent call.
*
* If LONG_ONLY is nonzero, '-' as well as '--' can introduce
* long-named options. */
int _getopt_internal(argc, argv, optstring, longopts, longind, long_only)
int argc;
char *const *argv;
const char *optstring;
const struct option *longopts;
int *longind;
int long_only;
{
optarg = NULL;
if (optind == 0 || !__getopt_initialized) {
if (optind == 0)
optind = 1; /* Don't scan ARGV[0], the program name. */
optstring = _getopt_initialize(argc, argv, optstring);
__getopt_initialized = 1;
}
/* Test whether ARGV[optind] points to a non-option argument.
* Either it does not have option syntax, or there is an environment flag
* from the shell indicating it is not an option. The later information
* is only used when the used in the GNU libc. */
#ifdef _LIBC
# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0' \
|| (optind < nonoption_flags_len \
&& __getopt_nonoption_flags[optind] == '1'))
#else
# define NONOPTION_P (argv[optind][0] != '-' || argv[optind][1] == '\0')
#endif
if (nextchar == NULL || *nextchar == '\0') {
/* Advance to the next ARGV-element. */
/* Give FIRST_NONOPT & LAST_NONOPT rational values if OPTIND has been
* moved back by the user (who may also have changed the arguments). */
if (last_nonopt > optind)
last_nonopt = optind;
if (first_nonopt > optind)
first_nonopt = optind;
if (ordering == PERMUTE) {
/* If we have just processed some options following some non-options,
* exchange them so that the options come first. */
if (first_nonopt != last_nonopt && last_nonopt != optind)
exchange((char **) argv);
else if (last_nonopt != optind)
first_nonopt = optind;
/* Skip any additional non-options
* and extend the range of non-options previously skipped. */
while (optind < argc && NONOPTION_P)
optind++;
last_nonopt = optind;
}
/* The special ARGV-element `--' means premature end of options.
* Skip it like a null option,
* then exchange with previous non-options as if it were an option,
* then skip everything else like a non-option. */
if (optind != argc && !strcmp(argv[optind], "--")) {
optind++;
if (first_nonopt != last_nonopt && last_nonopt != optind)
exchange((char **) argv);
else if (first_nonopt == last_nonopt)
first_nonopt = optind;
last_nonopt = argc;
optind = argc;
}
/* If we have done all the ARGV-elements, stop the scan
* and back over any non-options that we skipped and permuted. */
if (optind == argc) {
/* Set the next-arg-index to point at the non-options
* that we previously skipped, so the caller will digest them. */
if (first_nonopt != last_nonopt)
optind = first_nonopt;
return -1;
}
/* If we have come to a non-option and did not permute it,
* either stop the scan or describe it to the caller and pass it by. */
if (NONOPTION_P) {
if (ordering == REQUIRE_ORDER)
return -1;
optarg = argv[optind++];
return 1;
}
/* We have found another option-ARGV-element.
* Skip the initial punctuation. */
nextchar = (argv[optind] + 1 + (longopts != NULL && argv[optind][1] == '-'));
}
/* Decode the current option-ARGV-element. */
/* Check whether the ARGV-element is a long option.
*
* If long_only and the ARGV-element has the form "-f", where f is
* a valid short option, don't consider it an abbreviated form of
* a long option that starts with f. Otherwise there would be no
* way to give the -f short option.
*
* On the other hand, if there's a long option "fubar" and
* the ARGV-element is "-fu", do consider that an abbreviation of
* the long option, just like "--fu", and not "-f" with arg "u".
*
* This distinction seems to be the most useful approach. */
if (longopts != NULL
&& (argv[optind][1] == '-'
|| (long_only && (argv[optind][2] || !my_index(optstring, argv[optind][1]))))) {
char *nameend;
const struct option *p;
const struct option *pfound = NULL;
int exact = 0;
int ambig = 0;
int indfound = -1;
int option_index;
for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
/* Do nothing. */ ;
/* Test all long options for either exact match
* or abbreviated matches. */
for (p = longopts, option_index = 0; p->name; p++, option_index++)
if (!strncmp(p->name, nextchar, nameend - nextchar)) {
if ((unsigned int) (nameend - nextchar)
== (unsigned int) strlen(p->name)) {
/* Exact match found. */
pfound = p;
indfound = option_index;
exact = 1;
break;
} else if (pfound == NULL) {
/* First nonexact match found. */
pfound = p;
indfound = option_index;
} else
/* Second or later nonexact match found. */
ambig = 1;
}
if (ambig && !exact) {
if (opterr)
fprintf(stderr, _("%s: option `%s' is ambiguous\n"), argv[0], argv[optind]);
nextchar += strlen(nextchar);
optind++;
optopt = 0;
return '?';
}
if (pfound != NULL) {
option_index = indfound;
optind++;
if (*nameend) {
/* Don't test has_arg with >, because some C compilers don't
* allow it to be used on enums. */
if (pfound->has_arg)
optarg = nameend + 1;
else {
if (opterr) {
if (argv[optind - 1][1] == '-')
/* --option */
fprintf(stderr,
_
("%s: option `--%s' doesn't allow an argument\n"),
argv[0], pfound->name);
else
/* +option or -option */
fprintf(stderr,
_
("%s: option `%c%s' doesn't allow an argument\n"),
argv[0], argv[optind - 1][0], pfound->name);
}
nextchar += strlen(nextchar);
optopt = pfound->val;
return '?';
}
} else if (pfound->has_arg == 1) {
if (optind < argc)
optarg = argv[optind++];
else {
if (opterr)
fprintf(stderr,
_("%s: option `%s' requires an argument\n"),
argv[0], argv[optind - 1]);
nextchar += strlen(nextchar);
optopt = pfound->val;
return optstring[0] == ':' ? ':' : '?';
}
}
nextchar += strlen(nextchar);
if (longind != NULL)
*longind = option_index;
if (pfound->flag) {
*(pfound->flag) = pfound->val;
return 0;
}
return pfound->val;
}
/* Can't find it as a long option. If this is not getopt_long_only,
* or the option starts with '--' or is not a valid short
* option, then it's an error.
* Otherwise interpret it as a short option. */
if (!long_only || argv[optind][1] == '-' || my_index(optstring, *nextchar) == NULL) {
if (opterr) {
if (argv[optind][1] == '-')
/* --option */
fprintf(stderr, _("%s: unrecognized option `--%s'\n"), argv[0], nextchar);
else
/* +option or -option */
fprintf(stderr, _("%s: unrecognized option `%c%s'\n"),
argv[0], argv[optind][0], nextchar);
}
nextchar = (char *) "";
optind++;
optopt = 0;
return '?';
}
}
/* Look at and handle the next short option-character. */
{
char c = *nextchar++;
char *temp = my_index(optstring, c);
/* Increment `optind' when we start to process its last character. */
if (*nextchar == '\0')
++optind;
if (temp == NULL || c == ':') {
if (opterr) {
if (posixly_correct)
/* 1003.2 specifies the format of this message. */
fprintf(stderr, _("%s: illegal option -- %c\n"), argv[0], c);
else
fprintf(stderr, _("%s: invalid option -- %c\n"), argv[0], c);
}
optopt = c;
return '?';
}
/* Convenience. Treat POSIX -W foo same as long option --foo */
if (temp[0] == 'W' && temp[1] == ';') {
char *nameend;
const struct option *p;
const struct option *pfound = NULL;
int exact = 0;
int ambig = 0;
int indfound = 0;
int option_index;
/* This is an option that requires an argument. */
if (*nextchar != '\0') {
optarg = nextchar;
/* If we end this ARGV-element by taking the rest as an arg,
* we must advance to the next element now. */
optind++;
} else if (optind == argc) {
if (opterr) {
/* 1003.2 specifies the format of this message. */
fprintf(stderr, _("%s: option requires an argument -- %c\n"), argv[0], c);
}
optopt = c;
if (optstring[0] == ':')
c = ':';
else
c = '?';
return c;
} else
/* We already incremented `optind' once;
* increment it again when taking next ARGV-elt as argument. */
optarg = argv[optind++];
/* optarg is now the argument, see if it's in the
* table of longopts. */
for (nextchar = nameend = optarg; *nameend && *nameend != '='; nameend++)
/* Do nothing. */ ;
/* Test all long options for either exact match
* or abbreviated matches. */
for (p = longopts, option_index = 0; p->name; p++, option_index++)
if (!strncmp(p->name, nextchar, nameend - nextchar)) {
if ((unsigned int) (nameend - nextchar) == strlen(p->name)) {
/* Exact match found. */
pfound = p;
indfound = option_index;
exact = 1;
break;
} else if (pfound == NULL) {
/* First nonexact match found. */
pfound = p;
indfound = option_index;
} else
/* Second or later nonexact match found. */
ambig = 1;
}
if (ambig && !exact) {
if (opterr)
fprintf(stderr, _("%s: option `-W %s' is ambiguous\n"), argv[0], argv[optind]);
nextchar += strlen(nextchar);
optind++;
return '?';
}
if (pfound != NULL) {
option_index = indfound;
if (*nameend) {
/* Don't test has_arg with >, because some C compilers don't
* allow it to be used on enums. */
if (pfound->has_arg)
optarg = nameend + 1;
else {
if (opterr)
fprintf(stderr, _("\
%s: option `-W %s' doesn't allow an argument\n"), argv[0], pfound->name);
nextchar += strlen(nextchar);
return '?';
}
} else if (pfound->has_arg == 1) {
if (optind < argc)
optarg = argv[optind++];
else {
if (opterr)
fprintf(stderr,
_("%s: option `%s' requires an argument\n"),
argv[0], argv[optind - 1]);
nextchar += strlen(nextchar);
return optstring[0] == ':' ? ':' : '?';
}
}
nextchar += strlen(nextchar);
if (longind != NULL)
*longind = option_index;
if (pfound->flag) {
*(pfound->flag) = pfound->val;
return 0;
}
return pfound->val;
}
nextchar = NULL;
return 'W'; /* Let the application handle it. */
}
if (temp[1] == ':') {
if (temp[2] == ':') {
/* This is an option that accepts an argument optionally. */
if (*nextchar != '\0') {
optarg = nextchar;
optind++;
} else
optarg = NULL;
nextchar = NULL;
} else {
/* This is an option that requires an argument. */
if (*nextchar != '\0') {
optarg = nextchar;
/* If we end this ARGV-element by taking the rest as an arg,
* we must advance to the next element now. */
optind++;
} else if (optind == argc) {
if (opterr) {
/* 1003.2 specifies the format of this message. */
fprintf(stderr, _("%s: option requires an argument -- %c\n"), argv[0], c);
}
optopt = c;
if (optstring[0] == ':')
c = ':';
else
c = '?';
} else
/* We already incremented `optind' once;
* increment it again when taking next ARGV-elt as argument. */
optarg = argv[optind++];
nextchar = NULL;
}
}
return c;
}
}
int getopt(int argc, char *const *argv, const char *optstring);
int getopt(argc, argv, optstring)
int argc;
char *const *argv;
const char *optstring;
{
return _getopt_internal(argc, argv, optstring, (const struct option *) 0, (int *) 0, 0);
}
#endif /* Not ELIDE_CODE. */
#ifdef TEST
/* Compile with -DTEST to make an executable for use in testing
* the above definition of `getopt'. */
int main(argc, argv)
int argc;
char **argv;
{
int c;
int digit_optind = 0;
while (1) {
int this_option_optind = optind ? optind : 1;
c = getopt(argc, argv, "abc:d:0123456789");
if (c == -1)
break;
switch (c) {
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
if (digit_optind != 0 && digit_optind != this_option_optind)
printf("digits occur in two different argv-elements.\n");
digit_optind = this_option_optind;
printf("option %c\n", c);
break;
case 'a':
printf("option a\n");
break;
case 'b':
printf("option b\n");
break;
case 'c':
printf("option c with value `%s'\n", optarg);
break;
case '?':
break;
default:
printf("?? getopt returned character code 0%o ??\n", c);
}
}
if (optind < argc) {
printf("non-option ARGV-elements: ");
while (optind < argc)
printf("%s ", argv[optind++]);
printf("\n");
}
exit(0);
}
#endif /* TEST */
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