0,0 → 1,1054 |
/* 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 |
|
#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 |
|
#include <string.h> |
|
#if defined (WIN32) && !defined (__CYGWIN32__) |
/* It's not Unix, really. See? Capital letters. */ |
#include <windows.h> |
#define getpid() GetCurrentProcessId() |
#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; |
|
extern pid_t __libc_pid; |
|
/* 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; |
} |
text_set_element (__libc_subinit, store_args_and_env); |
|
# 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 |
{ |
memcpy (new_str, __getopt_nonoption_flags, nonoption_flags_max_len); |
memset (&new_str[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 = NULL;//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 |
{ |
memcpy (__getopt_nonoption_flags, orig_str, len); |
memset (&__getopt_nonoption_flags[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 */ |