automatically generated from GPLed version

2 files changed, 2110 insertions, 0 deletions

diff --git a/lib-src/getopt.c b/lib-src/getopt.c
new file mode 100644
index 00000000000..19f3f056592
--- /dev/null
+++ b/lib-src/getopt.c
@@ -0,0 +1,1055 @@
+/* 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 C library, however.  The master source lives in /gd/gnu/lib.
+
+NOTE: The canonical source of this file is maintained with the GNU C Library.
+Bugs can be reported to bug-glibc@prep.ai.mit.edu.
+
+This program is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+This program 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 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, 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
+
+#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 = 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 */
diff --git a/src/strftime.c b/src/strftime.c
new file mode 100644
index 00000000000..c0cc077b072
--- /dev/null
+++ b/src/strftime.c
@@ -0,0 +1,1055 @@
+/* Copyright (C) 1991, 92, 93, 94, 95, 96, 97 Free Software Foundation, Inc.
+
+NOTE: The canonical source of this file is maintained with the GNU C Library.
+Bugs can be reported to bug-glibc@prep.ai.mit.edu.
+
+This program is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+This program 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 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, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef _LIBC
+# define HAVE_LIMITS_H 1
+# define HAVE_MBLEN 1
+# define HAVE_MBRLEN 1
+# define HAVE_STRUCT_ERA_ENTRY 1
+# define HAVE_TM_GMTOFF 1
+# define HAVE_TM_ZONE 1
+# define HAVE_TZNAME 1
+# define HAVE_TZSET 1
+# define MULTIBYTE_IS_FORMAT_SAFE 1
+# define STDC_HEADERS 1
+# include <ansidecl.h>
+# include "../locale/localeinfo.h"
+#endif
+
+#include <ctype.h>
+#include <sys/types.h>          /* Some systems define `time_t' here.  */
+
+#ifdef TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# ifdef HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
+#endif
+#if HAVE_TZNAME
+extern char *tzname[];
+#endif
+
+/* Do multibyte processing if multibytes are supported, unless
+   multibyte sequences are safe in formats.  Multibyte sequences are
+   safe if they cannot contain byte sequences that look like format
+   conversion specifications.  The GNU C Library uses UTF8 multibyte
+   encoding, which is safe for formats, but strftime.c can be used
+   with other C libraries that use unsafe encodings.  */
+#define DO_MULTIBYTE (HAVE_MBLEN && ! MULTIBYTE_IS_FORMAT_SAFE)
+
+#if DO_MULTIBYTE
+# if HAVE_MBRLEN
+#  include <wchar.h>
+# else
+   /* Simulate mbrlen with mblen as best we can.  */
+#  define mbstate_t int
+#  define mbrlen(s, n, ps) mblen (s, n)
+#  define mbsinit(ps) (*(ps) == 0)
+# endif
+  static const mbstate_t mbstate_zero;
+#endif
+
+#if HAVE_LIMITS_H
+# include <limits.h>
+#endif
+
+#if STDC_HEADERS
+# include <stddef.h>
+# include <stdlib.h>
+# include <string.h>
+#else
+# define memcpy(d, s, n) bcopy ((s), (d), (n))
+#endif
+
+#ifndef __P
+# if defined (__GNUC__) || (defined (__STDC__) && __STDC__)
+#  define __P(args) args
+# else
+#  define __P(args) ()
+# endif  /* GCC.  */
+#endif  /* Not __P.  */
+
+#ifndef PTR
+# ifdef __STDC__
+#  define PTR void *
+# else
+#  define PTR char *
+# endif
+#endif
+
+#ifndef CHAR_BIT
+# define CHAR_BIT 8
+#endif
+
+#ifndef NULL
+# define NULL 0
+#endif
+
+#define TYPE_SIGNED(t) ((t) -1 < 0)
+
+/* Bound on length of the string representing an integer value of type t.
+   Subtract one for the sign bit if t is signed;
+   302 / 1000 is log10 (2) rounded up;
+   add one for integer division truncation;
+   add one more for a minus sign if t is signed.  */
+#define INT_STRLEN_BOUND(t) \
+  ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 100 + 1 + TYPE_SIGNED (t))
+
+#define TM_YEAR_BASE 1900
+
+#ifndef __isleap
+/* Nonzero if YEAR is a leap year (every 4 years,
+   except every 100th isn't, and every 400th is).  */
+# define __isleap(year) \
+  ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
+#endif
+
+
+#ifdef _LIBC
+# define gmtime_r __gmtime_r
+# define localtime_r __localtime_r
+extern int __tz_compute __P ((time_t timer, const struct tm *tm));
+# define tzname __tzname
+# define tzset __tzset
+#else
+# if ! HAVE_LOCALTIME_R
+#  if ! HAVE_TM_GMTOFF
+/* Approximate gmtime_r as best we can in its absence.  */
+#  define gmtime_r my_gmtime_r
+static struct tm *gmtime_r __P ((const time_t *, struct tm *));
+static struct tm *
+gmtime_r (t, tp)
+     const time_t *t;
+     struct tm *tp;
+{
+  struct tm *l = gmtime (t);
+  if (! l)
+    return 0;
+  *tp = *l;
+  return tp;
+}
+#  endif /* ! HAVE_TM_GMTOFF */
+
+/* Approximate localtime_r as best we can in its absence.  */
+#  define localtime_r my_localtime_r
+static struct tm *localtime_r __P ((const time_t *, struct tm *));
+static struct tm *
+localtime_r (t, tp)
+     const time_t *t;
+     struct tm *tp;
+{
+  struct tm *l = localtime (t);
+  if (! l)
+    return 0;
+  *tp = *l;
+  return tp;
+}
+# endif /* ! HAVE_LOCALTIME_R */
+#endif /* ! defined (_LIBC) */
+
+
+#if !defined (memset) && !defined (HAVE_MEMSET) && !defined (_LIBC)
+/* Some systems lack the `memset' function and we don't want to
+   introduce additional dependencies.  */
+static const char spaces[16] = "                ";
+
+# define memset_space(P, Len) \
+  do {                                                                        \
+    int _len = (Len);                                                         \
+                                                                              \
+    do                                                                        \
+      {                                                                       \
+        int _this = _len > 16 ? 16 : _len;                                    \
+        memcpy ((P), spaces, _this);                                          \
+        (P) += _this;                                                         \
+        _len -= _this;                                                        \
+      }                                                                       \
+    while (_len > 0);                                                         \
+  } while (0)
+#else
+# define memset_space(P, Len) (memset ((P), ' ', (Len)), (P) += (Len))
+#endif
+
+#define add(n, f) \
+  do                                                                          \
+    {                                                                         \
+      int _n = (n);                                                           \
+      int _delta = width - _n;                                                \
+      int _incr = _n + (_delta > 0 ? _delta : 0);                             \
+      if (i + _incr >= maxsize)                                               \
+        return 0;                                                             \
+      if (p)                                                                  \
+        {                                                                     \
+          if (_delta > 0)                                                     \
+            memset_space (p, _delta);                                         \
+          f;                                                                  \
+          p += _n;                                                            \
+        }                                                                     \
+      i += _incr;                                                             \
+    } while (0)
+
+#define cpy(n, s) \
+    add ((n),                                                                 \
+         if (to_lowcase)                                                      \
+           memcpy_lowcase (p, (s), _n);                                       \
+         else if (to_uppcase)                                                 \
+           memcpy_uppcase (p, (s), _n);                                       \
+         else                                                                 \
+           memcpy ((PTR) p, (PTR) (s), _n))
+
+
+
+#ifdef _LIBC
+# define TOUPPER(Ch) toupper (Ch)
+# define TOLOWER(Ch) tolower (Ch)
+#else
+# define TOUPPER(Ch) (islower (Ch) ? toupper (Ch) : (Ch))
+# define TOLOWER(Ch) (isupper (Ch) ? tolower (Ch) : (Ch))
+#endif
+/* We don't use `isdigit' here since the locale dependent
+   interpretation is not what we want here.  We only need to accept
+   the arabic digits in the ASCII range.  One day there is perhaps a
+   more reliable way to accept other sets of digits.  */
+#define ISDIGIT(Ch) ((unsigned int) (Ch) - '0' <= 9)
+
+static char *memcpy_lowcase __P ((char *dest, const char *src, size_t len));
+
+static char *
+memcpy_lowcase (dest, src, len)
+     char *dest;
+     const char *src;
+     size_t len;
+{
+  while (len-- > 0)
+    dest[len] = TOLOWER (src[len]);
+  return dest;
+}
+
+static char *memcpy_uppcase __P ((char *dest, const char *src, size_t len));
+
+static char *
+memcpy_uppcase (dest, src, len)
+     char *dest;
+     const char *src;
+     size_t len;
+{
+  while (len-- > 0)
+    dest[len] = TOUPPER (src[len]);
+  return dest;
+}
+
+#if ! HAVE_TM_GMTOFF
+/* Yield the difference between *A and *B,
+   measured in seconds, ignoring leap seconds.  */
+static int tm_diff __P ((const struct tm *, const struct tm *));
+static int
+tm_diff (a, b)
+     const struct tm *a;
+     const struct tm *b;
+{
+  /* Compute intervening leap days correctly even if year is negative.
+     Take care to avoid int overflow in leap day calculations,
+     but it's OK to assume that A and B are close to each other.  */
+  int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3);
+  int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3);
+  int a100 = a4 / 25 - (a4 % 25 < 0);
+  int b100 = b4 / 25 - (b4 % 25 < 0);
+  int a400 = a100 >> 2;
+  int b400 = b100 >> 2;
+  int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
+  int years = a->tm_year - b->tm_year;
+  int days = (365 * years + intervening_leap_days
+              + (a->tm_yday - b->tm_yday));
+  return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour))
+                + (a->tm_min - b->tm_min))
+          + (a->tm_sec - b->tm_sec));
+}
+#endif /* ! HAVE_TM_GMTOFF */
+
+
+
+/* The number of days from the first day of the first ISO week of this
+   year to the year day YDAY with week day WDAY.  ISO weeks start on
+   Monday; the first ISO week has the year's first Thursday.  YDAY may
+   be as small as YDAY_MINIMUM.  */
+#define ISO_WEEK_START_WDAY 1 /* Monday */
+#define ISO_WEEK1_WDAY 4 /* Thursday */
+#define YDAY_MINIMUM (-366)
+static int iso_week_days __P ((int, int));
+#ifdef __GNUC__
+inline
+#endif
+static int
+iso_week_days (yday, wday)
+     int yday;
+     int wday;
+{
+  /* Add enough to the first operand of % to make it nonnegative.  */
+  int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7;
+  return (yday
+          - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7
+          + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY);
+}
+
+
+#ifndef _NL_CURRENT
+static char const weekday_name[][10] =
+  {
+    "Sunday", "Monday", "Tuesday", "Wednesday",
+    "Thursday", "Friday", "Saturday"
+  };
+static char const month_name[][10] =
+  {
+    "January", "February", "March", "April", "May", "June",
+    "July", "August", "September", "October", "November", "December"
+  };
+#endif
+
+
+#if !defined _LIBC && HAVE_TZNAME && HAVE_TZSET
+  /* Solaris 2.5 tzset sometimes modifies the storage returned by localtime.
+     Work around this bug by copying *tp before it might be munged.  */
+  size_t _strftime_copytm __P ((char *, size_t, const char *,
+                                const struct tm *));
+  size_t
+  strftime (s, maxsize, format, tp)
+      char *s;
+      size_t maxsize;
+      const char *format;
+      const struct tm *tp;
+  {
+    struct tm tmcopy;
+    tmcopy = *tp;
+    return _strftime_copytm (s, maxsize, format, &tmcopy);
+  }
+# ifdef strftime
+#  undef strftime
+# endif
+# define strftime(S, Maxsize, Format, Tp) \
+  _strftime_copytm (S, Maxsize, Format, Tp)
+#endif
+
+
+/* Write information from TP into S according to the format
+   string FORMAT, writing no more that MAXSIZE characters
+   (including the terminating '\0') and returning number of
+   characters written.  If S is NULL, nothing will be written
+   anywhere, so to determine how many characters would be
+   written, use NULL for S and (size_t) UINT_MAX for MAXSIZE.  */
+size_t
+strftime (s, maxsize, format, tp)
+      char *s;
+      size_t maxsize;
+      const char *format;
+      const struct tm *tp;
+{
+  int hour12 = tp->tm_hour;
+#ifdef _NL_CURRENT
+  const char *const a_wkday = _NL_CURRENT (LC_TIME, ABDAY_1 + tp->tm_wday);
+  const char *const f_wkday = _NL_CURRENT (LC_TIME, DAY_1 + tp->tm_wday);
+  const char *const a_month = _NL_CURRENT (LC_TIME, ABMON_1 + tp->tm_mon);
+  const char *const f_month = _NL_CURRENT (LC_TIME, MON_1 + tp->tm_mon);
+  const char *const ampm = _NL_CURRENT (LC_TIME,
+                                        hour12 > 11 ? PM_STR : AM_STR);
+  size_t aw_len = strlen (a_wkday);
+  size_t am_len = strlen (a_month);
+  size_t ap_len = strlen (ampm);
+#else
+  const char *const f_wkday = weekday_name[tp->tm_wday];
+  const char *const f_month = month_name[tp->tm_mon];
+  const char *const a_wkday = f_wkday;
+  const char *const a_month = f_month;
+  const char *const ampm = "AMPM" + 2 * (hour12 > 11);
+  size_t aw_len = 3;
+  size_t am_len = 3;
+  size_t ap_len = 2;
+#endif
+  size_t wkday_len = strlen (f_wkday);
+  size_t month_len = strlen (f_month);
+  const char *zone;
+  size_t zonelen;
+  size_t i = 0;
+  char *p = s;
+  const char *f;
+
+  zone = NULL;
+#if !defined _LIBC && HAVE_TM_ZONE
+  /* XXX We have some problems here.  First, the string pointed to by
+     tm_zone is dynamically allocated while loading the zone data.  But
+     when another zone is loaded since the information in TP were
+     computed this would be a stale pointer.
+     The second problem is the POSIX test suite which assumes setting
+     the environment variable TZ to a new value before calling strftime()
+     will influence the result (the %Z format) even if the information in
+     TP is computed with a totally different time zone.  --drepper@gnu  */
+  zone = (const char *) tp->tm_zone;
+#endif
+#if HAVE_TZNAME
+  /* POSIX.1 8.1.1 requires that whenever strftime() is called, the
+     time zone names contained in the external variable `tzname' shall
+     be set as if the tzset() function had been called.  */
+# if HAVE_TZSET
+  tzset ();
+# endif
+
+  if (!(zone && *zone) && tp->tm_isdst >= 0)
+    zone = tzname[tp->tm_isdst];
+#endif
+  if (! zone)
+    zone = "";          /* POSIX.2 requires the empty string here.  */
+
+  zonelen = strlen (zone);
+
+  if (hour12 > 12)
+    hour12 -= 12;
+  else
+    if (hour12 == 0) hour12 = 12;
+
+  for (f = format; *f != '\0'; ++f)
+    {
+      int pad;                  /* Padding for number ('-', '_', or 0).  */
+      int modifier;             /* Field modifier ('E', 'O', or 0).  */
+      int digits;               /* Max digits for numeric format.  */
+      int number_value;         /* Numeric value to be printed.  */
+      int negative_number;      /* 1 if the number is negative.  */
+      const char *subfmt;
+      char *bufp;
+      char buf[1 + (sizeof (int) < sizeof (time_t)
+                    ? INT_STRLEN_BOUND (time_t)
+                    : INT_STRLEN_BOUND (int))];
+      int width = -1;
+      int to_lowcase = 0;
+      int to_uppcase = 0;
+
+#if DO_MULTIBYTE
+
+       switch (*f)
+        {
+        case '%':
+          break;
+
+        case '\a': case '\b': case '\t': case '\n':
+        case '\v': case '\f': case '\r':
+        case ' ': case '!': case '"': case '#': case '&': case'\'':
+        case '(': case ')': case '*': case '+': case ',': case '-':
+        case '.': case '/': case '0': case '1': case '2': case '3':
+        case '4': case '5': case '6': case '7': case '8': case '9':
+        case ':': case ';': case '<': case '=': case '>': case '?':
+        case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
+        case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
+        case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
+        case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
+        case 'Y': case 'Z': case '[': case'\\': case ']': case '^':
+        case '_': case 'a': case 'b': case 'c': case 'd': case 'e':
+        case 'f': case 'g': case 'h': case 'i': case 'j': case 'k':
+        case 'l': case 'm': case 'n': case 'o': case 'p': case 'q':
+        case 'r': case 's': case 't': case 'u': case 'v': case 'w':
+        case 'x': case 'y': case 'z': case '{': case '|': case '}':
+        case '~':
+          /* The C Standard requires these 98 characters (plus '%') to
+             be in the basic execution character set.  None of these
+             characters can start a multibyte sequence, so they need
+             not be analyzed further.  */
+          add (1, *p = *f);
+          continue;
+
+        default:
+          /* Copy this multibyte sequence until we reach its end, find
+             an error, or come back to the initial shift state.  */
+          {
+            mbstate_t mbstate = mbstate_zero;
+            size_t len = 0;
+
+            do
+              {
+                size_t bytes = mbrlen (f + len, (size_t) -1, &mbstate);
+
+                if (bytes == 0)
+                  break;
+
+                if (bytes == (size_t) -2 || bytes == (size_t) -1)
+                  {
+                    len++;
+                    break;
+                  }
+
+                len += bytes;
+              }
+            while (! mbsinit (&mbstate));
+
+            cpy (len, f);
+            continue;
+          }
+        }
+
+#else /* ! DO_MULTIBYTE */
+
+      /* Either multibyte encodings are not supported, or they are
+         safe for formats, so any non-'%' byte can be copied through.  */
+      if (*f != '%')
+        {
+          add (1, *p = *f);
+          continue;
+        }
+
+#endif /* ! DO_MULTIBYTE */
+
+      /* Check for flags that can modify a format.  */
+      pad = 0;
+      while (1)
+        {
+          switch (*++f)
+            {
+              /* This influences the number formats.  */
+            case '_':
+            case '-':
+            case '0':
+              pad = *f;
+              continue;
+
+              /* This changes textual output.  */
+            case '^':
+              to_uppcase = 1;
+              continue;
+
+            default:
+              break;
+            }
+          break;
+        }
+
+      /* As a GNU extension we allow to specify the field width.  */
+      if (ISDIGIT (*f))
+        {
+          width = 0;
+          do
+            {
+              width *= 10;
+              width += *f - '0';
+              ++f;
+            }
+          while (ISDIGIT (*f));
+        }
+
+      /* Check for modifiers.  */
+      switch (*f)
+        {
+        case 'E':
+        case 'O':
+          modifier = *f++;
+          break;
+
+        default:
+          modifier = 0;
+          break;
+        }
+
+      /* Now do the specified format.  */
+      switch (*f)
+        {
+#define DO_NUMBER(d, v) \
+          digits = d; number_value = v; goto do_number
+#define DO_NUMBER_SPACEPAD(d, v) \
+          digits = d; number_value = v; goto do_number_spacepad
+
+        case '%':
+          if (modifier != 0)
+            goto bad_format;
+          add (1, *p = *f);
+          break;
+
+        case 'a':
+          if (modifier != 0)
+            goto bad_format;
+          cpy (aw_len, a_wkday);
+          break;
+
+        case 'A':
+          if (modifier != 0)
+            goto bad_format;
+          cpy (wkday_len, f_wkday);
+          break;
+
+        case 'b':
+        case 'h':               /* POSIX.2 extension.  */
+          if (modifier != 0)
+            goto bad_format;
+          cpy (am_len, a_month);
+          break;
+
+        case 'B':
+          if (modifier != 0)
+            goto bad_format;
+          cpy (month_len, f_month);
+          break;
+
+        case 'c':
+          if (modifier == 'O')
+            goto bad_format;
+#ifdef _NL_CURRENT
+          if (! (modifier == 'E'
+                 && *(subfmt = _NL_CURRENT (LC_TIME, ERA_D_T_FMT)) != '\0'))
+            subfmt = _NL_CURRENT (LC_TIME, D_T_FMT);
+#else
+          subfmt = "%a %b %e %H:%M:%S %Y";
+#endif
+
+        subformat:
+          {
+            char *old_start = p;
+            size_t len = strftime (NULL, maxsize - i, subfmt, tp);
+            if (len == 0 && *subfmt)
+              return 0;
+            add (len, strftime (p, maxsize - i, subfmt, tp));
+
+            if (to_uppcase)
+              while (old_start < p)
+                {
+                  *old_start = TOUPPER (*old_start);
+                  ++old_start;
+                }
+          }
+          break;
+
+        case 'C':               /* POSIX.2 extension.  */
+          if (modifier == 'O')
+            goto bad_format;
+#if HAVE_STRUCT_ERA_ENTRY
+          if (modifier == 'E')
+            {
+              struct era_entry *era = _nl_get_era_entry (tp);
+              if (era)
+                {
+                  size_t len = strlen (era->name_fmt);
+                  cpy (len, era->name_fmt);
+                  break;
+                }
+            }
+#endif
+          {
+            int year = tp->tm_year + TM_YEAR_BASE;
+            DO_NUMBER (1, year / 100 - (year % 100 < 0));
+          }
+
+        case 'x':
+          if (modifier == 'O')
+            goto bad_format;
+#ifdef _NL_CURRENT
+          if (! (modifier == 'E'
+                 && *(subfmt = _NL_CURRENT (LC_TIME, ERA_D_FMT)) != '\0'))
+            subfmt = _NL_CURRENT (LC_TIME, D_FMT);
+          goto subformat;
+#endif
+          /* Fall through.  */
+        case 'D':               /* POSIX.2 extension.  */
+          if (modifier != 0)
+            goto bad_format;
+          subfmt = "%m/%d/%y";
+          goto subformat;
+
+        case 'd':
+          if (modifier == 'E')
+            goto bad_format;
+
+          DO_NUMBER (2, tp->tm_mday);
+
+        case 'e':               /* POSIX.2 extension.  */
+          if (modifier == 'E')
+            goto bad_format;
+
+          DO_NUMBER_SPACEPAD (2, tp->tm_mday);
+
+          /* All numeric formats set DIGITS and NUMBER_VALUE and then
+             jump to one of these two labels.  */
+
+        do_number_spacepad:
+          /* Force `_' flag unless overwritten by `0' flag.  */
+          if (pad != '0')
+            pad = '_';
+
+        do_number:
+          /* Format the number according to the MODIFIER flag.  */
+
+#ifdef _NL_CURRENT
+          if (modifier == 'O' && 0 <= number_value)
+            {
+              /* Get the locale specific alternate representation of
+                 the number NUMBER_VALUE.  If none exist NULL is returned.  */
+              const char *cp = _nl_get_alt_digit (number_value);
+
+              if (cp != NULL)
+                {
+                  size_t digitlen = strlen (cp);
+                  if (digitlen != 0)
+                    {
+                      cpy (digitlen, cp);
+                      break;
+                    }
+                }
+            }
+#endif
+          {
+            unsigned int u = number_value;
+
+            bufp = buf + sizeof (buf);
+            negative_number = number_value < 0;
+
+            if (negative_number)
+              u = -u;
+
+            do
+              *--bufp = u % 10 + '0';
+            while ((u /= 10) != 0);
+          }
+
+        do_number_sign_and_padding:
+          if (negative_number)
+            *--bufp = '-';
+
+          if (pad != '-')
+            {
+              int padding = digits - (buf + sizeof (buf) - bufp);
+
+              if (pad == '_')
+                {
+                  while (0 < padding--)
+                    *--bufp = ' ';
+                }
+              else
+                {
+                  bufp += negative_number;
+                  while (0 < padding--)
+                    *--bufp = '0';
+                  if (negative_number)
+                    *--bufp = '-';
+                }
+            }
+
+          cpy (buf + sizeof (buf) - bufp, bufp);
+          break;
+
+
+        case 'H':
+          if (modifier == 'E')
+            goto bad_format;
+
+          DO_NUMBER (2, tp->tm_hour);
+
+        case 'I':
+          if (modifier == 'E')
+            goto bad_format;
+
+          DO_NUMBER (2, hour12);
+
+        case 'k':               /* GNU extension.  */
+          if (modifier == 'E')
+            goto bad_format;
+
+          DO_NUMBER_SPACEPAD (2, tp->tm_hour);
+
+        case 'l':               /* GNU extension.  */
+          if (modifier == 'E')
+            goto bad_format;
+
+          DO_NUMBER_SPACEPAD (2, hour12);
+
+        case 'j':
+          if (modifier == 'E')
+            goto bad_format;
+
+          DO_NUMBER (3, 1 + tp->tm_yday);
+
+        case 'M':
+          if (modifier == 'E')
+            goto bad_format;
+
+          DO_NUMBER (2, tp->tm_min);
+
+        case 'm':
+          if (modifier == 'E')
+            goto bad_format;
+
+          DO_NUMBER (2, tp->tm_mon + 1);
+
+        case 'n':               /* POSIX.2 extension.  */
+          add (1, *p = '\n');
+          break;
+
+        case 'P':
+          to_lowcase = 1;
+          /* FALLTHROUGH */
+
+        case 'p':
+          cpy (ap_len, ampm);
+          break;
+
+        case 'R':               /* GNU extension.  */
+          subfmt = "%H:%M";
+          goto subformat;
+
+        case 'r':               /* POSIX.2 extension.  */
+#ifdef _NL_CURRENT
+          if (*(subfmt = _NL_CURRENT (LC_TIME, T_FMT_AMPM)) == '\0')
+#endif
+            subfmt = "%I:%M:%S %p";
+          goto subformat;
+
+        case 'S':
+          if (modifier == 'E')
+            goto bad_format;
+
+          DO_NUMBER (2, tp->tm_sec);
+
+        case 's':               /* GNU extension.  */
+          {
+            struct tm ltm;
+            time_t t;
+
+            ltm = *tp;
+            t = mktime (&ltm);
+
+            /* Generate string value for T using time_t arithmetic;
+               this works even if sizeof (long) < sizeof (time_t).  */
+
+            bufp = buf + sizeof (buf);
+            negative_number = t < 0;
+
+            do
+              {
+                int d = t % 10;
+                t /= 10;
+
+                if (negative_number)
+                  {
+                    d = -d;
+
+                    /* Adjust if division truncates to minus infinity.  */
+                    if (0 < -1 % 10 && d < 0)
+                      {
+                        t++;
+                        d += 10;
+                      }
+                  }
+
+                *--bufp = d + '0';
+              }
+            while (t != 0);
+
+            digits = 1;
+            goto do_number_sign_and_padding;
+          }
+
+        case 'X':
+          if (modifier == 'O')
+            goto bad_format;
+#ifdef _NL_CURRENT
+          if (! (modifier == 'E'
+                 && *(subfmt = _NL_CURRENT (LC_TIME, ERA_T_FMT)) != '\0'))
+            subfmt = _NL_CURRENT (LC_TIME, T_FMT);
+          goto subformat;
+#endif
+          /* Fall through.  */
+        case 'T':               /* POSIX.2 extension.  */
+          subfmt = "%H:%M:%S";
+          goto subformat;
+
+        case 't':               /* POSIX.2 extension.  */
+          add (1, *p = '\t');
+          break;
+
+        case 'u':               /* POSIX.2 extension.  */
+          DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1);
+
+        case 'U':
+          if (modifier == 'E')
+            goto bad_format;
+
+          DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7);
+
+        case 'V':
+        case 'g':               /* GNU extension.  */
+        case 'G':               /* GNU extension.  */
+          if (modifier == 'E')
+            goto bad_format;
+          {
+            int year = tp->tm_year + TM_YEAR_BASE;
+            int days = iso_week_days (tp->tm_yday, tp->tm_wday);
+
+            if (days < 0)
+              {
+                /* This ISO week belongs to the previous year.  */
+                year--;
+                days = iso_week_days (tp->tm_yday + (365 + __isleap (year)),
+                                      tp->tm_wday);
+              }
+            else
+              {
+                int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)),
+                                       tp->tm_wday);
+                if (0 <= d)
+                  {
+                    /* This ISO week belongs to the next year.  */
+                    year++;
+                    days = d;
+                  }
+              }
+
+            switch (*f)
+              {
+              case 'g':
+                DO_NUMBER (2, (year % 100 + 100) % 100);
+
+              case 'G':
+                DO_NUMBER (1, year);
+
+              default:
+                DO_NUMBER (2, days / 7 + 1);
+              }
+          }
+
+        case 'W':
+          if (modifier == 'E')
+            goto bad_format;
+
+          DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7);
+
+        case 'w':
+          if (modifier == 'E')
+            goto bad_format;
+
+          DO_NUMBER (1, tp->tm_wday);
+
+        case 'Y':
+#if HAVE_STRUCT_ERA_ENTRY
+          if (modifier == 'E')
+            {
+              struct era_entry *era = _nl_get_era_entry (tp);
+              if (era)
+                {
+                  subfmt = strchr (era->name_fmt, '\0') + 1;
+                  goto subformat;
+                }
+            }
+#endif
+          if (modifier == 'O')
+            goto bad_format;
+          else
+            DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE);
+
+        case 'y':
+#if HAVE_STRUCT_ERA_ENTRY
+          if (modifier == 'E')
+            {
+              struct era_entry *era = _nl_get_era_entry (tp);
+              if (era)
+                {
+                  int delta = tp->tm_year - era->start_date[0];
+                  DO_NUMBER (1, (era->offset
+                                 + (era->direction == '-' ? -delta : delta)));
+                }
+            }
+#endif
+          DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100);
+
+        case 'Z':
+          cpy (zonelen, zone);
+          break;
+
+        case 'z':               /* GNU extension.  */
+          if (tp->tm_isdst < 0)
+            break;
+
+          {
+            int diff;
+#if HAVE_TM_GMTOFF
+            diff = tp->tm_gmtoff;
+#else
+            struct tm gtm;
+            struct tm ltm;
+            time_t lt;
+
+            ltm = *tp;
+            lt = mktime (&ltm);
+
+            if (lt == (time_t) -1)
+              {
+                /* mktime returns -1 for errors, but -1 is also a
+                   valid time_t value.  Check whether an error really
+                   occurred.  */
+                struct tm tm;
+                localtime_r (&lt, &tm);
+
+                if ((ltm.tm_sec ^ tm.tm_sec)
+                    | (ltm.tm_min ^ tm.tm_min)
+                    | (ltm.tm_hour ^ tm.tm_hour)
+                    | (ltm.tm_mday ^ tm.tm_mday)
+                    | (ltm.tm_mon ^ tm.tm_mon)
+                    | (ltm.tm_year ^ tm.tm_year))
+                  break;
+              }
+
+            if (! gmtime_r (&lt, &gtm))
+              break;
+
+            diff = tm_diff (&ltm, &gtm);
+#endif
+
+            if (diff < 0)
+              {
+                add (1, *p = '-');
+                diff = -diff;
+              }
+            else
+              add (1, *p = '+');
+
+            diff /= 60;
+            DO_NUMBER (4, (diff / 60) * 100 + diff % 60);
+          }
+
+        case '\0':              /* GNU extension: % at end of format.  */
+            --f;
+            /* Fall through.  */
+        default:
+          /* Unknown format; output the format, including the '%',
+             since this is most likely the right thing to do if a
+             multibyte string has been misparsed.  */
+        bad_format:
+          {
+            int flen;
+            for (flen = 1; f[1 - flen] != '%'; flen++)
+              continue;
+            cpy (flen, &f[1 - flen]);
+          }
+          break;
+        }
+    }
+
+  if (p)
+    *p = '\0';
+  return i;
+}