/* Test and measure strpbrk functions.

   Copyright (C) 1999-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Written by Jakub Jelinek <jakub@redhat.com>, 1999.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#ifndef WIDE

# define CHAR char

# define UCHAR unsigned char

# define STRLEN strlen

# define STRCHR strchr

# define BIG_CHAR CHAR_MAX

# define SMALL_CHAR 127

#else

# include <wchar.h>

# define CHAR wchar_t

# define UCHAR wchar_t

# define STRLEN wcslen

# define STRCHR wcschr

# define BIG_CHAR WCHAR_MAX

# define SMALL_CHAR 1273

#endif /* WIDE */

#ifndef STRPBRK_RESULT

# define STRPBRK_RESULT(s, pos) ((s)[(pos)] ? (s) + (pos) : NULL)

# define RES_TYPE CHAR *

# define TEST_MAIN

# ifndef WIDE

#  define TEST_NAME "strpbrk"

# else

#  define TEST_NAME "wcspbrk"

# endif /* WIDE */

# include "test-string.h"

# ifndef WIDE

#  define STRPBRK strpbrk

#  define SIMPLE_STRPBRK simple_strpbrk

#  define STUPID_STRPBRK stupid_strpbrk

# else

#  include <wchar.h>

#  define STRPBRK wcspbrk

#  define SIMPLE_STRPBRK simple_wcspbrk

#  define STUPID_STRPBRK stupid_wcspbrk

# endif /* WIDE */

typedef CHAR *(*proto_t) (const CHAR *, const CHAR *);

CHAR *SIMPLE_STRPBRK (const CHAR *, const CHAR *);

CHAR *STUPID_STRPBRK (const CHAR *, const CHAR *);

IMPL (STUPID_STRPBRK, 0)

IMPL (SIMPLE_STRPBRK, 0)

IMPL (STRPBRK, 1)

CHAR *

SIMPLE_STRPBRK (const CHAR *s, const CHAR *rej)

{

  const CHAR *r;

  CHAR c;

  while ((c = *s++) != '\0')

    for (r = rej; *r != '\0'; ++r)

      if (*r == c)

	return (CHAR *) s - 1;

  return NULL;

}

CHAR *

STUPID_STRPBRK (const CHAR *s, const CHAR *rej)

{

  size_t ns = STRLEN (s), nrej = STRLEN (rej);

  size_t i, j;

  for (i = 0; i < ns; ++i)

    for (j = 0; j < nrej; ++j)

      if (s[i] == rej[j])

	return (CHAR *) s + i;

  return NULL;

}

#endif /* !STRPBRK_RESULT */

static void

do_one_test (impl_t *impl, const CHAR *s, const CHAR *rej, RES_TYPE exp_res)

{

  RES_TYPE res = CALL (impl, s, rej);

  if (res != exp_res)

    {

      error (0, 0, "Wrong result in function %s %p %p", impl->name,

	     (void *) res, (void *) exp_res);

      ret = 1;

      return;

    }

}

static void

do_test (size_t align, size_t pos, size_t len)

{

  size_t i;

  int c;

  RES_TYPE result;

  CHAR *rej, *s;

  align &= 7;

  if ((align + pos + 10) * sizeof (CHAR) >= page_size || len > 240)

    return;

  rej = (CHAR *) (buf2) + (random () & 255);

  s = (CHAR *) (buf1) + align;

  for (i = 0; i < len; ++i)

    {

      rej[i] = random () & BIG_CHAR;

      if (!rej[i])

	rej[i] = random () & BIG_CHAR;

      if (!rej[i])

	rej[i] = 1 + (random () & SMALL_CHAR);

    }

  rej[len] = '\0';

  for (c = 1; c <= BIG_CHAR; ++c)

    if (STRCHR (rej, c) == NULL)

      break;

  for (i = 0; i < pos; ++i)

    {

      s[i] = random () & BIG_CHAR;

      if (STRCHR (rej, s[i]))

	{

	  s[i] = random () & BIG_CHAR;

	  if (STRCHR (rej, s[i]))

	    s[i] = c;

	}

    }

  s[pos] = rej[random () % (len + 1)];

  if (s[pos])

    {

      for (i = pos + 1; i < pos + 10; ++i)

	s[i] = random () & BIG_CHAR;

      s[i] = '\0';

    }

  result = STRPBRK_RESULT (s, pos);

  FOR_EACH_IMPL (impl, 0)

    do_one_test (impl, s, rej, result);

}

static void

do_random_tests (void)

{

  size_t i, j, n, align, pos, len, rlen;

  RES_TYPE result;

  int c;

  UCHAR *p = (UCHAR *) (buf1 + page_size) - 512;

  UCHAR *rej;

  for (n = 0; n < ITERATIONS; n++)

    {

      align = random () & 15;

      pos = random () & 511;

      if (pos + align >= 511)

	pos = 510 - align - (random () & 7);

      len = random () & 511;

      if (pos >= len && (random () & 1))

	len = pos + 1 + (random () & 7);

      if (len + align >= 512)

	len = 511 - align - (random () & 7);

      if (random () & 1)

	rlen = random () & 63;

      else

	rlen = random () & 15;

      rej = (UCHAR *) (buf2 + page_size) - rlen - 1 - (random () & 7);

      for (i = 0; i < rlen; ++i)

	{

	  rej[i] = random () & BIG_CHAR;

	  if (!rej[i])

	    rej[i] = random () & BIG_CHAR;

	  if (!rej[i])

	    rej[i] = 1 + (random () & SMALL_CHAR);

	}

      rej[i] = '\0';

      for (c = 1; c <= BIG_CHAR; ++c)

	if (STRCHR ((CHAR *) rej, c) == NULL)

	  break;

      j = (pos > len ? pos : len) + align + 64;

      if (j > 512)

	j = 512;

      for (i = 0; i < j; i++)

	{

	  if (i == len + align)

	    p[i] = '\0';

	  else if (i == pos + align)

	    p[i] = rej[random () % (rlen + 1)];

	  else if (i < align || i > pos + align)

	    p[i] = random () & BIG_CHAR;

	  else

	    {

	      p[i] = random () & BIG_CHAR;

	      if (STRCHR ((CHAR *) rej, p[i]))

		{

		  p[i] = random () & BIG_CHAR;

		  if (STRCHR ((CHAR *) rej, p[i]))

		    p[i] = c;

		}

	    }

	}

      result = STRPBRK_RESULT ((CHAR *) (p + align), pos < len ? pos : len);

      FOR_EACH_IMPL (impl, 1)

	if (CALL (impl, (CHAR *) (p + align), (CHAR *) rej) != result)

	  {

	    error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %p, %zd, %zd, %zd) %p != %p",

		   n, impl->name, align, rej, rlen, pos, len,

		   (void *) CALL (impl, (CHAR *) (p + align), (CHAR *) rej),

		   (void *) result);

	    ret = 1;

	  }

    }

}

int

test_main (void)

{

  size_t i;

  test_init ();

  printf ("%32s", "");

  FOR_EACH_IMPL (impl, 0)

    printf ("\t%s", impl->name);

  putchar ('\n');

  for (i = 0; i < 32; ++i)

    {

      do_test (0, 512, i);

      do_test (i, 512, i);

    }

  for (i = 1; i < 8; ++i)

    {

      do_test (0, 16 << i, 4);

      do_test (i, 16 << i, 4);

    }

  for (i = 1; i < 8; ++i)

    do_test (i, 64, 10);

  for (i = 0; i < 64; ++i)

    do_test (0, i, 6);

  do_random_tests ();

  return ret;

}

#include <support/test-driver.c>