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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
MA 02111-1307, USA */
/*
Functions to convert to lover_case and to upper_case in scandinavia.
case_sort converts a character string to a representaion that can
be compared by strcmp to find with is alfabetical bigger.
(lower- and uppercase letters is compared as the same)
*/
#include "mysys_priv.h"
#include <m_ctype.h>
#ifndef SCO
#include <m_string.h>
#endif
/* string to uppercase */
void caseup_str(my_string str)
{
#ifdef USE_MB
if (use_mb(default_charset_info))
{
register uint32 l;
register char *end=str+strlen(str);
while (*str)
{
if ((l=my_ismbchar(default_charset_info, str,end))) str+=l;
else *str=toupper(*str),++str;
}
}
else
#endif
while ((*str = toupper(*str)) != 0)
str++;
} /* caseup_str */
/* string to lowercase */
void casedn_str(my_string str)
{
#ifdef USE_MB
if (use_mb(default_charset_info))
{
register uint32 l;
register char *end=str+strlen(str);
while (*str)
{
if ((l=my_ismbchar(default_charset_info, str,end))) str+=l;
else *str=tolower(*str),++str;
}
}
else
#endif
while ((*str= tolower(*str)) != 0)
str++;
} /* casedn_str */
/* to uppercase */
void caseup(my_string str, uint length)
{
#ifdef USE_MB
if (use_mb(default_charset_info))
{
register uint32 l;
register char *end=str+length;
while (str<end)
{
if ((l=my_ismbchar(default_charset_info, str,end))) str+=l;
else *str=toupper(*str),++str;
}
}
else
#endif
for ( ; length>0 ; length--, str++)
*str= toupper(*str);
} /* caseup */
/* to lowercase */
void casedn(my_string str, uint length)
{
#ifdef USE_MB
if (use_mb(default_charset_info))
{
register uint32 l;
register char *end=str+length;
while (str<end)
{
if ((l=my_ismbchar(default_charset_info, str,end))) str+=l;
else *str=tolower(*str),++str;
}
}
else
#endif
for ( ; length>0 ; length--, str++)
*str= tolower(*str);
} /* casedn */
/* to sort-string that can be compared to get text in order */
void case_sort(my_string str, uint length)
{
for ( ; length>0 ; length--, str++)
*str= (char) my_sort_order[(uchar) *str];
} /* case_sort */
/* find string in another with no case_sensivity */
/* ToDo: This function should be modified to support multibyte charset.
However it is not used untill 3.23.5.
Wei He (hewei@mail.ied.ac.cn)
*/
my_string my_strcasestr(const char *str, const char *search)
{
uchar *i,*j,*pos;
pos=(uchar*) str;
skipp:
while (*pos != '\0')
{
if (toupper((uchar) *pos++) == toupper((uchar) *search))
{
i=(uchar*) pos; j=(uchar*) search+1;
while (*j)
if (toupper(*i++) != toupper(*j++)) goto skipp;
return ((char*) pos-1);
}
}
return ((my_string) 0);
} /* strcstr */
/* compare strings without regarding to case */
int my_strcasecmp(const char *s, const char *t)
{
#ifdef USE_MB
if (use_mb(default_charset_info))
{
register uint32 l;
register const char *end=s+strlen(s);
while (s<end)
{
if ((l=my_ismbchar(default_charset_info, s,end)))
{
while (l--)
if (*s++ != *t++) return 1;
}
else if (my_ismbhead(default_charset_info, *t)) return 1;
else if (toupper((uchar) *s++) != toupper((uchar) *t++)) return 1;
}
return *t;
}
else
#endif
{
while (toupper((uchar) *s) == toupper((uchar) *t++))
if (!*s++) return 0;
return ((int) toupper((uchar) s[0]) - (int) toupper((uchar) t[-1]));
}
}
int my_casecmp(const char *s, const char *t, uint len)
{
#ifdef USE_MB
if (use_mb(default_charset_info))
{
register uint32 l;
register const char *end=s+len;
while (s<end)
{
if ((l=my_ismbchar(default_charset_info, s,end)))
{
while (l--)
if (*s++ != *t++) return 1;
}
else if (my_ismbhead(default_charset_info, *t)) return 1;
else if (toupper((uchar) *s++) != toupper((uchar) *t++)) return 1;
}
return 0;
}
else
#endif
{
while (len-- != 0 && toupper(*s++) == toupper(*t++)) ;
return (int) len+1;
}
}
int my_strsortcmp(const char *s, const char *t)
{
#ifdef USE_STRCOLL
if (use_strcoll(default_charset_info))
return my_strcoll(default_charset_info, (uchar *)s, (uchar *)t);
else
#endif
{
while (my_sort_order[(uchar) *s] == my_sort_order[(uchar) *t++])
if (!*s++) return 0;
return ((int) my_sort_order[(uchar) s[0]] -
(int) my_sort_order[(uchar) t[-1]]);
}
}
int my_sortcmp(const char *s, const char *t, uint len)
{
#ifdef USE_STRCOLL
if (use_strcoll(default_charset_info))
return my_strnncoll(default_charset_info,
(uchar *)s, len, (uchar *)t, len);
else
#endif
{
while (len--)
{
if (my_sort_order[(uchar) *s++] != my_sort_order[(uchar) *t++])
return ((int) my_sort_order[(uchar) s[-1]] -
(int) my_sort_order[(uchar) t[-1]]);
}
return 0;
}
}
int my_sortncmp(const char *s, uint s_len, const char *t, uint t_len)
{
#ifdef USE_STRCOLL
if (use_strcoll(default_charset_info))
return my_strnncoll(default_charset_info,
(uchar *)s, s_len, (uchar *)t, t_len);
else
#endif
{
uint len= min(s_len,t_len);
while (len--)
{
if (my_sort_order[(uchar) *s++] != my_sort_order[(uchar) *t++])
return ((int) my_sort_order[(uchar) s[-1]] -
(int) my_sort_order[(uchar) t[-1]]);
}
return (int) (s_len - t_len);
}
}
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