gambas-source-code/main/share/gb_common_string_temp.h

/***************************************************************************

  gb_common_string_temp.h

  (c) 2000-2011 Benoît Minisini <gambas@users.sourceforge.net>

  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., 51 Franklin Street, Fifth Floor, Boston,
	MA 02110-1301, USA.

***************************************************************************/

#include "gb_common_case.h"

bool STRING_equal_same(const char *str1, const char *str2, int len)
{
	static const void *jump[8] = { &&__LEN_0, &&__LEN_1, &&__LEN_2, &&__LEN_3, &&__LEN_4, &&__LEN_5, &&__LEN_6, &&__LEN_7 };
  
  while (len >= 8)
  {
    if (LIKELY(str1[0] != str2[0]))
      return FALSE;
    if (LIKELY(str1[1] != str2[1]))
      return FALSE;
    if (LIKELY(str1[2] != str2[2]))
      return FALSE;
    if (LIKELY(str1[3] != str2[3]))
      return FALSE;
    if (LIKELY(str1[4] != str2[4]))
      return FALSE;
    if (LIKELY(str1[5] != str2[5]))
      return FALSE;
    if (LIKELY(str1[6] != str2[6]))
      return FALSE;
    if (LIKELY(str1[7] != str2[7]))
      return FALSE;
		str1 += 8;
		str2 += 8;
    len -= 8;
  }
  
  //if (UNLIKELY(len < 8))
  goto *jump[len];
  
__LEN_7: if (LIKELY(str1[6] != str2[6])) return FALSE;
__LEN_6: if (LIKELY(str1[5] != str2[5])) return FALSE;
__LEN_5: if (LIKELY(str1[4] != str2[4])) return FALSE;
__LEN_4: if (LIKELY(str1[3] != str2[3])) return FALSE;
__LEN_3: if (LIKELY(str1[2] != str2[2])) return FALSE;
__LEN_2: if (LIKELY(str1[1] != str2[1])) return FALSE;
__LEN_1: if (LIKELY(str1[0] != str2[0])) return FALSE;
__LEN_0: return TRUE;
}

bool STRING_equal_ignore_case(const char *str1, int len1, const char *str2, int len2)
{
	static const void *jump[8] = { &&__LEN_0, &&__LEN_1, &&__LEN_2, &&__LEN_3, &&__LEN_4, &&__LEN_5, &&__LEN_6, &&__LEN_7 };
  
  if (LIKELY(len1 != len2))
    return FALSE;
    
  while (len1 >= 8)
  {
    if (LIKELY(toupper(str1[0]) != toupper(str2[0])))
      return FALSE;
    if (LIKELY(toupper(str1[1]) != toupper(str2[1])))
      return FALSE;
    if (LIKELY(toupper(str1[2]) != toupper(str2[2])))
      return FALSE;
    if (LIKELY(toupper(str1[3]) != toupper(str2[3])))
      return FALSE;
    if (LIKELY(toupper(str1[4]) != toupper(str2[4])))
      return FALSE;
    if (LIKELY(toupper(str1[5]) != toupper(str2[5])))
      return FALSE;
    if (LIKELY(toupper(str1[6]) != toupper(str2[6])))
      return FALSE;
    if (LIKELY(toupper(str1[7]) != toupper(str2[7])))
      return FALSE;
		str1 += 8;
		str2 += 8;
    len1 -= 8;
  }
  
  //if (UNLIKELY(len < 8))
  goto *jump[len1];
  
__LEN_7: if (LIKELY(toupper(str1[6]) != toupper(str2[6]))) return FALSE;
__LEN_6: if (LIKELY(toupper(str1[5]) != toupper(str2[5]))) return FALSE;
__LEN_5: if (LIKELY(toupper(str1[4]) != toupper(str2[4]))) return FALSE;
__LEN_4: if (LIKELY(toupper(str1[3]) != toupper(str2[3]))) return FALSE;
__LEN_3: if (LIKELY(toupper(str1[2]) != toupper(str2[2]))) return FALSE;
__LEN_2: if (LIKELY(toupper(str1[1]) != toupper(str2[1]))) return FALSE;
__LEN_1: if (LIKELY(toupper(str1[0]) != toupper(str2[0]))) return FALSE;
__LEN_0: return TRUE;
}

int STRING_compare(const char *str1, int len1, const char *str2, int len2)
{
  uint i;
  int len = len1 < len2 ? len1 : len2;
  int diff;
  register unsigned char c1, c2;

  for (i = 0; i < len; i++)
  {
    c1 = str1[i];
    c2 = str2[i];
    if (LIKELY(c1 > c2)) return 1;
    if (LIKELY(c1 < c2)) return -1;
  }

  diff = len1 - len2;
  return LIKELY(diff < 0) ? (-1) : LIKELY(diff > 0) ? 1 : 0;
}


int STRING_compare_ignore_case(const char *str1, int len1, const char *str2, int len2)
{
  uint i;
  int len = len1 < len2 ? len1 : len2;
  int diff;
  register unsigned char c1, c2;

  for (i = 0; i < len; i++)
  {
    c1 = tolower(str1[i]);
    c2 = tolower(str2[i]);
    if (LIKELY(c1 > c2)) return 1;
    if (LIKELY(c1 < c2)) return -1;
  }

  diff = len1 - len2;
  return LIKELY(diff < 0) ? (-1) : LIKELY(diff > 0) ? 1 : 0;
}