/* 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!
+ NOTE: The canonical source of this file is maintained with the GNU
+ C Library. Bugs can be reported to bug-glibc@gnu.org.
- Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94
+ Copyright (C) 1987, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99
Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify it
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
\f
/* 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
+# define _NO_PROTO
#endif
#ifdef HAVE_CONFIG_H
-#include <config.h>
-#endif
-
-#if !defined (__STDC__) || !__STDC__
+# include <config.h>
+#else
+# if !defined __STDC__ || !__STDC__
/* This is a separate conditional since some stdc systems
reject `defined (const)'. */
-#ifndef const
-#define const
-#endif
+# ifndef const
+# define const
+# endif
+# endif
#endif
#include <stdio.h>
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. */
-#if defined (_LIBC) || !defined (__GNU_LIBRARY__)
+#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
#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 <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.
- The GNU C Library itself does not yet support such messages. */
-#if HAVE_LIBINTL_H
-# include <libintl.h>
-#else
-# define gettext(msgid) (msgid)
+ 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'
Also, when `ordering' is RETURN_IN_ORDER,
each non-option ARGV-element is returned here. */
-char *optarg = NULL;
+char *optarg;
/* Index in ARGV of the next element to be scanned.
This is used for communication to and from the caller
On entry to `getopt', zero means this is the first call; initialize.
- When `getopt' returns EOF, this is the index of the first of the
+ 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. */
-/* XXX 1003.2 says this must be 1 before any call. */
-int optind = 0;
+/* 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.
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 EOF with `optind' != ARGC. */
+ `--' can cause `getopt' to return -1 with `optind' != ARGC. */
static enum
{
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
+# include <string.h>
+# define my_index strchr
#else
+# if HAVE_STRING_H
+# include <string.h>
+# else
+# include <strings.h>
+# endif
+
/* Avoid depending on library functions or files
whose names are inconsistent. */
-char *getenv ();
+#ifndef getenv
+extern char *getenv ();
+#endif
static char *
my_index (str, chr)
#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__
+# 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 /* not __STDC__ */
#endif /* __GNUC__ */
#endif /* not __GNU_LIBRARY__ */
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.
`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;
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)
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;
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;
/* 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 (optstring)
+_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 = 1;
+ first_nonopt = last_nonopt = optind;
nextchar = NULL;
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;
}
\f
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 `EOF'.
+ 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.)
{
optarg = NULL;
- if (optind == 0)
- optstring = _getopt_initialize (optstring);
+ 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,
/* Skip any additional non-options
and extend the range of non-options previously skipped. */
- while (optind < argc
- && (argv[optind][0] != '-' || argv[optind][1] == '\0'))
+ while (optind < argc && NONOPTION_P)
optind++;
last_nonopt = optind;
}
that we previously skipped, so the caller will digest them. */
if (first_nonopt != last_nonopt)
optind = first_nonopt;
- return EOF;
+ 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 ((argv[optind][0] != '-' || argv[optind][1] == '\0'))
+ if (NONOPTION_P)
{
if (ordering == REQUIRE_ORDER)
- return EOF;
+ return -1;
optarg = argv[optind++];
return 1;
}
const struct option *pfound = NULL;
int exact = 0;
int ambig = 0;
- int indfound;
+ int indfound = -1;
int option_index;
for (nameend = nextchar; *nameend && *nameend != '='; nameend++)
for (p = longopts, option_index = 0; p->name; p++, option_index++)
if (!strncmp (p->name, nextchar, nameend - nextchar))
{
- if (nameend - nextchar == strlen (p->name))
+ if ((unsigned int) (nameend - nextchar)
+ == (unsigned int) strlen (p->name))
{
/* Exact match found. */
pfound = p;
if (ambig && !exact)
{
if (opterr)
- fprintf (stderr, gettext ("%s: option `%s' is ambiguous\n"),
+ fprintf (stderr, _("%s: option `%s' is ambiguous\n"),
argv[0], argv[optind]);
nextchar += strlen (nextchar);
optind++;
+ optopt = 0;
return '?';
}
else
{
if (opterr)
- if (argv[optind - 1][1] == '-')
- /* --option */
- fprintf (stderr,
- gettext ("%s: option `--%s' doesn't allow an argument\n"),
- argv[0], pfound->name);
- else
- /* +option or -option */
- fprintf (stderr,
- gettext ("%s: option `%c%s' doesn't allow an argument\n"),
- argv[0], argv[optind - 1][0], pfound->name);
+ {
+ 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 '?';
}
}
{
if (opterr)
fprintf (stderr,
- gettext ("%s: option `%s' requires an argument\n"),
+ _("%s: option `%s' requires an argument\n"),
argv[0], argv[optind - 1]);
nextchar += strlen (nextchar);
+ optopt = pfound->val;
return optstring[0] == ':' ? ':' : '?';
}
}
{
if (argv[optind][1] == '-')
/* --option */
- fprintf (stderr, gettext ("%s: unrecognized option `--%s'\n"),
+ fprintf (stderr, _("%s: unrecognized option `--%s'\n"),
argv[0], nextchar);
else
/* +option or -option */
- fprintf (stderr, gettext ("%s: unrecognized option `%c%s'\n"),
+ fprintf (stderr, _("%s: unrecognized option `%c%s'\n"),
argv[0], argv[optind][0], nextchar);
}
nextchar = (char *) "";
optind++;
+ optopt = 0;
return '?';
}
}
{
if (posixly_correct)
/* 1003.2 specifies the format of this message. */
- fprintf (stderr, gettext ("%s: illegal option -- %c\n"),
+ fprintf (stderr, _("%s: illegal option -- %c\n"),
argv[0], c);
else
- fprintf (stderr, gettext ("%s: invalid option -- %c\n"),
+ 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] == ':')
{
/* 1003.2 specifies the format of this message. */
fprintf (stderr,
- gettext ("%s: option requires an argument -- %c\n"),
+ _("%s: option requires an argument -- %c\n"),
argv[0], c);
}
optopt = c;
0);
}
-#endif /* _LIBC or not __GNU_LIBRARY__. */
+#endif /* Not ELIDE_CODE. */
\f
#ifdef TEST
int this_option_optind = optind ? optind : 1;
c = getopt (argc, argv, "abc:d:0123456789");
- if (c == EOF)
+ if (c == -1)
break;
switch (c)
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