/* Uppercase mapping for UTF-8 strings (locale dependent).
   Copyright (C) 2009-2018 Free Software Foundation, Inc.
   Written by Bruno Haible <bruno@clisp.org>, 2009.

   This program is free software: you can redistribute it and/or
   modify it under the terms of either:

     * the GNU Lesser General Public License as published by the Free
       Software Foundation; either version 3 of the License, or (at your
       option) any later version.

   or

     * the GNU General Public License as published by the Free
       Software Foundation; either version 2 of the License, or (at your
       option) any later version.

   or both in parallel, as here.
   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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */

#include <config.h>

/* Specification.  */
#include "unicase.h"

#include <stddef.h>

#include "unicasemap.h"
#include "unicase/special-casing.h"

uint8_t *
u8_toupper (const uint8_t *s, size_t n, const char *iso639_language,
            uninorm_t nf,
            uint8_t *resultbuf, size_t *lengthp)
{
  return u8_casemap (s, n,
                     unicase_empty_prefix_context, unicase_empty_suffix_context,
                     iso639_language,
                     uc_toupper, offsetof (struct special_casing_rule, upper[0]),
                     nf,
                     resultbuf, lengthp);
}


#ifdef TEST

#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

/* Read the contents of an input stream, and return it, terminated with a NUL
   byte. */
char *
read_file (FILE *stream)
{
#define BUFSIZE 4096
  char *buf = NULL;
  int alloc = 0;
  int size = 0;
  int count;

  while (! feof (stream))
    {
      if (size + BUFSIZE > alloc)
        {
          alloc = alloc + alloc / 2;
          if (alloc < size + BUFSIZE)
            alloc = size + BUFSIZE;
          buf = realloc (buf, alloc);
          if (buf == NULL)
            {
              fprintf (stderr, "out of memory\n");
              exit (1);
            }
        }
      count = fread (buf + size, 1, BUFSIZE, stream);
      if (count == 0)
        {
          if (ferror (stream))
            {
              perror ("fread");
              exit (1);
            }
        }
      else
        size += count;
    }
  buf = realloc (buf, size + 1);
  if (buf == NULL)
    {
      fprintf (stderr, "out of memory\n");
      exit (1);
    }
  buf[size] = '\0';
  return buf;
#undef BUFSIZE
}

int
main (int argc, char * argv[])
{
  setlocale (LC_ALL, "");
  if (argc == 1)
    {
      /* Display the upper case of the input string.  */
      char *input = read_file (stdin);
      int length = strlen (input);
      size_t output_length;
      uint8_t *output =
        u8_toupper ((uint8_t *) input, length, uc_locale_language (),
                    NULL,
                    NULL, &output_length);

      fwrite (output, 1, output_length, stdout);

      return 0;
    }
  else
    return 1;
}

#endif /* TEST */
