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

  gb_common_string_temp.h

  common useful routines template

  Datatype management routines. Conversions between each Gambas datatype,
  and conversions between Gambas datatypes and native datatypes.

  (c) 2000-2007 Benoit 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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.

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

#include "gb_common_case.h"

#if 0
bool STRING_equal(const char *str1, int len1, const char *str2, int len2)
{
	static const void *jump[4] = { &&__LEN_0, &&__LEN_1, &&__LEN_2, &&__LEN_3 };
	
  if (len1 != len2)
    return FALSE;
  
  while (len1 >= 4)
  {
  	len1 -= 4;
  	if (*((int *)&str1[len1]) != *((int *)&str2[len1]))
  		return FALSE;
  }
  
  goto *jump[len1];

__LEN_3:
	if (str1[2] != str2[2])
		return FALSE;
__LEN_2:
	if (str1[1] != str2[1])
		return FALSE;
__LEN_1:
	if (str1[0] != str2[0])
		return FALSE;
__LEN_0:
  return TRUE;
}
#endif

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 };
  
  if (len < 8)
  	goto *jump[len];
  
  while (len)
  {
    len--;
    if (str1[len] != str2[len])
      return FALSE;
  }
  
  return TRUE;
  
__LEN_7: if (str1[6] != str2[6]) return FALSE;
__LEN_6: if (str1[5] != str2[5]) return FALSE;
__LEN_5: if (str1[4] != str2[4]) return FALSE;
__LEN_4: if (str1[3] != str2[3]) return FALSE;
__LEN_3: if (str1[2] != str2[2]) return FALSE;
__LEN_2: if (str1[1] != str2[1]) return FALSE;
__LEN_1: if (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)
{
  if (len1 != len2)
    return FALSE;
    
  while (len1)
  {
    len1--;
    if (toupper(str1[len1]) != toupper(str2[len1]))
      return FALSE;
  }
  
  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 (c1 > c2) return 1;
    if (c1 < c2) return -1;
  }

  diff = len1 - len2;
  return (diff < 0) ? (-1) : (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 (c1 > c2) return 1;
    if (c1 < c2) return -1;
  }

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