| New file |
| | |
| | | /* 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) 1987,88,89,90,91,92,93,94,95,96,98,99,2000,2001 |
| | | Free Software Foundation, Inc. |
| | | This file is part of the GNU C Library. |
| | | |
| | | The GNU C Library is free software; you can redistribute it and/or |
| | | modify it under the terms of the GNU Lesser General Public |
| | | License as published by the Free Software Foundation; either |
| | | version 2.1 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 |
| | | Lesser General Public License for more details. |
| | | |
| | | You should have received a copy of the GNU Lesser General Public |
| | | License along with the GNU C Library; 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 |
| | | |
| | | #ifdef HAVE_CONFIG_H |
| | | # include <config.h> |
| | | #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. */ |
| | | # if (HAVE_LIBINTL_H && ENABLE_NLS) || defined _LIBC |
| | | # include <libintl.h> |
| | | # ifndef _ |
| | | # define _(msgid) gettext (msgid) |
| | | # endif |
| | | # else |
| | | # define _(msgid) (msgid) |
| | | # endif |
| | | # if defined _LIBC && defined USE_IN_LIBIO |
| | | # include <wchar.h> |
| | | # 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; |
| | | |
| | | /* 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; |
| | | |
| | | /* 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 || WIN32 /* Pete Wilson mod 7/28/02 */ |
| | | # 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 |
| | | /* Stored original parameters. |
| | | 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). */ |
| | | extern int __libc_argc; |
| | | extern char **__libc_argv; |
| | | |
| | | /* Bash 2.0 gives us an environment variable containing flags |
| | | indicating ARGV elements that should not be considered arguments. */ |
| | | |
| | | # ifdef USE_NONOPTION_FLAGS |
| | | /* Defined in getopt_init.c */ |
| | | extern char *__getopt_nonoption_flags; |
| | | |
| | | static int nonoption_flags_max_len; |
| | | static int nonoption_flags_len; |
| | | # endif |
| | | |
| | | # ifdef USE_NONOPTION_FLAGS |
| | | # 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 |
| | | # define SWAP_FLAGS(ch1, ch2) |
| | | # endif |
| | | #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. */ |
| | | |
| | | #if defined _LIBC && defined USE_NONOPTION_FLAGS |
| | | /* 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; |
| | | |
| | | #if defined _LIBC && defined USE_NONOPTION_FLAGS |
| | | if (posixly_correct == NULL |
| | | && argc == __libc_argc && argv == __libc_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; |
| | | { |
| | | int print_errors = opterr; |
| | | if (optstring[0] == ':') |
| | | print_errors = 0; |
| | | |
| | | if (argc < 1) |
| | | return -1; |
| | | |
| | | 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. */ |
| | | #if defined _LIBC && defined USE_NONOPTION_FLAGS |
| | | # 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 and 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 if (long_only |
| | | || pfound->has_arg != p->has_arg |
| | | || pfound->flag != p->flag |
| | | || pfound->val != p->val) |
| | | /* Second or later nonexact match found. */ |
| | | ambig = 1; |
| | | } |
| | | |
| | | if (ambig && !exact) |
| | | { |
| | | if (print_errors) |
| | | { |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | char *buf; |
| | | |
| | | __asprintf (&buf, _("%s: option `%s' is ambiguous\n"), |
| | | argv[0], argv[optind]); |
| | | |
| | | if (_IO_fwide (stderr, 0) > 0) |
| | | __fwprintf (stderr, L"%s", buf); |
| | | else |
| | | fputs (buf, stderr); |
| | | |
| | | free (buf); |
| | | #else |
| | | fprintf (stderr, _("%s: option `%s' is ambiguous\n"), |
| | | argv[0], argv[optind]); |
| | | #endif |
| | | } |
| | | 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 (print_errors) |
| | | { |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | char *buf; |
| | | #endif |
| | | |
| | | if (argv[optind - 1][1] == '-') |
| | | { |
| | | /* --option */ |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | __asprintf (&buf, _("\ |
| | | %s: option `--%s' doesn't allow an argument\n"), |
| | | argv[0], pfound->name); |
| | | #else |
| | | fprintf (stderr, _("\ |
| | | %s: option `--%s' doesn't allow an argument\n"), |
| | | argv[0], pfound->name); |
| | | #endif |
| | | } |
| | | else |
| | | { |
| | | /* +option or -option */ |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | __asprintf (&buf, _("\ |
| | | %s: option `%c%s' doesn't allow an argument\n"), |
| | | argv[0], argv[optind - 1][0], |
| | | pfound->name); |
| | | #else |
| | | fprintf (stderr, _("\ |
| | | %s: option `%c%s' doesn't allow an argument\n"), |
| | | argv[0], argv[optind - 1][0], pfound->name); |
| | | #endif |
| | | } |
| | | |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | if (_IO_fwide (stderr, 0) > 0) |
| | | __fwprintf (stderr, L"%s", buf); |
| | | else |
| | | fputs (buf, stderr); |
| | | |
| | | free (buf); |
| | | #endif |
| | | } |
| | | |
| | | nextchar += strlen (nextchar); |
| | | |
| | | optopt = pfound->val; |
| | | return '?'; |
| | | } |
| | | } |
| | | else if (pfound->has_arg == 1) |
| | | { |
| | | if (optind < argc) |
| | | optarg = argv[optind++]; |
| | | else |
| | | { |
| | | if (print_errors) |
| | | { |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | char *buf; |
| | | |
| | | __asprintf (&buf, |
| | | _("%s: option `%s' requires an argument\n"), |
| | | argv[0], argv[optind - 1]); |
| | | |
| | | if (_IO_fwide (stderr, 0) > 0) |
| | | __fwprintf (stderr, L"%s", buf); |
| | | else |
| | | fputs (buf, stderr); |
| | | |
| | | free (buf); |
| | | #else |
| | | fprintf (stderr, |
| | | _("%s: option `%s' requires an argument\n"), |
| | | argv[0], argv[optind - 1]); |
| | | #endif |
| | | } |
| | | 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 (print_errors) |
| | | { |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | char *buf; |
| | | #endif |
| | | |
| | | if (argv[optind][1] == '-') |
| | | { |
| | | /* --option */ |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | __asprintf (&buf, _("%s: unrecognized option `--%s'\n"), |
| | | argv[0], nextchar); |
| | | #else |
| | | fprintf (stderr, _("%s: unrecognized option `--%s'\n"), |
| | | argv[0], nextchar); |
| | | #endif |
| | | } |
| | | else |
| | | { |
| | | /* +option or -option */ |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | __asprintf (&buf, _("%s: unrecognized option `%c%s'\n"), |
| | | argv[0], argv[optind][0], nextchar); |
| | | #else |
| | | fprintf (stderr, _("%s: unrecognized option `%c%s'\n"), |
| | | argv[0], argv[optind][0], nextchar); |
| | | #endif |
| | | } |
| | | |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | if (_IO_fwide (stderr, 0) > 0) |
| | | __fwprintf (stderr, L"%s", buf); |
| | | else |
| | | fputs (buf, stderr); |
| | | |
| | | free (buf); |
| | | #endif |
| | | } |
| | | 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 (print_errors) |
| | | { |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | char *buf; |
| | | #endif |
| | | |
| | | if (posixly_correct) |
| | | { |
| | | /* 1003.2 specifies the format of this message. */ |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | __asprintf (&buf, _("%s: illegal option -- %c\n"), |
| | | argv[0], c); |
| | | #else |
| | | fprintf (stderr, _("%s: illegal option -- %c\n"), argv[0], c); |
| | | #endif |
| | | } |
| | | else |
| | | { |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | __asprintf (&buf, _("%s: invalid option -- %c\n"), |
| | | argv[0], c); |
| | | #else |
| | | fprintf (stderr, _("%s: invalid option -- %c\n"), argv[0], c); |
| | | #endif |
| | | } |
| | | |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | if (_IO_fwide (stderr, 0) > 0) |
| | | __fwprintf (stderr, L"%s", buf); |
| | | else |
| | | fputs (buf, stderr); |
| | | |
| | | free (buf); |
| | | #endif |
| | | } |
| | | 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 (print_errors) |
| | | { |
| | | /* 1003.2 specifies the format of this message. */ |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | char *buf; |
| | | |
| | | __asprintf (&buf, _("%s: option requires an argument -- %c\n"), |
| | | argv[0], c); |
| | | |
| | | if (_IO_fwide (stderr, 0) > 0) |
| | | __fwprintf (stderr, L"%s", buf); |
| | | else |
| | | fputs (buf, stderr); |
| | | |
| | | free (buf); |
| | | #else |
| | | fprintf (stderr, _("%s: option requires an argument -- %c\n"), |
| | | argv[0], c); |
| | | #endif |
| | | } |
| | | 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 (print_errors) |
| | | { |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | char *buf; |
| | | |
| | | __asprintf (&buf, _("%s: option `-W %s' is ambiguous\n"), |
| | | argv[0], argv[optind]); |
| | | |
| | | if (_IO_fwide (stderr, 0) > 0) |
| | | __fwprintf (stderr, L"%s", buf); |
| | | else |
| | | fputs (buf, stderr); |
| | | |
| | | free (buf); |
| | | #else |
| | | fprintf (stderr, _("%s: option `-W %s' is ambiguous\n"), |
| | | argv[0], argv[optind]); |
| | | #endif |
| | | } |
| | | 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 (print_errors) |
| | | { |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | char *buf; |
| | | |
| | | __asprintf (&buf, _("\ |
| | | %s: option `-W %s' doesn't allow an argument\n"), |
| | | argv[0], pfound->name); |
| | | |
| | | if (_IO_fwide (stderr, 0) > 0) |
| | | __fwprintf (stderr, L"%s", buf); |
| | | else |
| | | fputs (buf, stderr); |
| | | |
| | | free (buf); |
| | | #else |
| | | fprintf (stderr, _("\ |
| | | %s: option `-W %s' doesn't allow an argument\n"), |
| | | argv[0], pfound->name); |
| | | #endif |
| | | } |
| | | |
| | | nextchar += strlen (nextchar); |
| | | return '?'; |
| | | } |
| | | } |
| | | else if (pfound->has_arg == 1) |
| | | { |
| | | if (optind < argc) |
| | | optarg = argv[optind++]; |
| | | else |
| | | { |
| | | if (print_errors) |
| | | { |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | char *buf; |
| | | |
| | | __asprintf (&buf, _("\ |
| | | %s: option `%s' requires an argument\n"), |
| | | argv[0], argv[optind - 1]); |
| | | |
| | | if (_IO_fwide (stderr, 0) > 0) |
| | | __fwprintf (stderr, L"%s", buf); |
| | | else |
| | | fputs (buf, stderr); |
| | | |
| | | free (buf); |
| | | #else |
| | | fprintf (stderr, |
| | | _("%s: option `%s' requires an argument\n"), |
| | | argv[0], argv[optind - 1]); |
| | | #endif |
| | | } |
| | | 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 (print_errors) |
| | | { |
| | | /* 1003.2 specifies the format of this message. */ |
| | | #if defined _LIBC && defined USE_IN_LIBIO |
| | | char *buf; |
| | | |
| | | __asprintf (&buf, |
| | | _("%s: option requires an argument -- %c\n"), |
| | | argv[0], c); |
| | | |
| | | if (_IO_fwide (stderr, 0) > 0) |
| | | __fwprintf (stderr, L"%s", buf); |
| | | else |
| | | fputs (buf, stderr); |
| | | |
| | | free (buf); |
| | | #else |
| | | fprintf (stderr, |
| | | _("%s: option requires an argument -- %c\n"), |
| | | argv[0], c); |
| | | #endif |
| | | } |
| | | 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. */ |
| | | |
| | | |
| | | /* Compile with -DTEST to make an executable for use in testing |
| | | the above definition of `getopt'. */ |
| | | |
| | | /* #define TEST */ /* Pete Wilson mod 7/28/02 */ |
| | | #ifdef TEST |
| | | |
| | | #ifndef exit /* Pete Wilson mod 7/28/02 */ |
| | | int exit(int); /* Pete Wilson mod 7/28/02 */ |
| | | #endif /* Pete Wilson mod 7/28/02 */ |
| | | |
| | | 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 */ |