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Diffstat (limited to 'src/getopt.c')
| -rw-r--r-- | src/getopt.c | 949 |
1 files changed, 0 insertions, 949 deletions
diff --git a/src/getopt.c b/src/getopt.c deleted file mode 100644 index d212b3a..0000000 --- a/src/getopt.c +++ /dev/null @@ -1,949 +0,0 @@ -/* 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 roland@gnu.ai.mit.edu - before changing it! - - Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97 - 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 - -#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 - -/* Avoid depending on library functions or files - whose names are inconsistent. */ - -char *getenv(); - -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__ -/* 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(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 */ |