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120 lines
3.2 KiB
C
120 lines
3.2 KiB
C
/* Copyright (C) 2002 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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#include <my_global.h>
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#include "m_ctype.h"
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#include "dbug.h"
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#include "assert.h"
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int my_strnxfrm_simple(CHARSET_INFO * cs,
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uchar *dest, uint len,
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const uchar *src, uint srclen)
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{
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uchar *map= cs->sort_order;
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DBUG_ASSERT(len >= srclen);
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for ( ; len > 0 ; len-- )
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*dest++= map[*src++];
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return srclen;
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}
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int my_strnncoll_simple(CHARSET_INFO * cs, const uchar *s, uint slen,
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const uchar *t, uint tlen)
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{
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int len = ( slen > tlen ) ? tlen : slen;
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uchar *map= cs->sort_order;
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while (len--)
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{
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if (map[*s++] != map[*t++])
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return ((int) map[s[-1]] - (int) map[t[-1]]);
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}
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return (int) (slen-tlen);
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}
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void my_caseup_str_8bit(CHARSET_INFO * cs,char *str)
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{
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register uchar *map=cs->to_upper;
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while ((*str = (char) map[(uchar) *str]) != 0)
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str++;
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}
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void my_casedn_str_8bit(CHARSET_INFO * cs,char *str)
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{
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register uchar *map=cs->to_lower;
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while ((*str = (char) map[(uchar)*str]) != 0)
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str++;
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}
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void my_caseup_8bit(CHARSET_INFO * cs, char *str, uint length)
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{
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register uchar *map=cs->to_upper;
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for ( ; length>0 ; length--, str++)
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*str= (char) map[(uchar)*str];
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}
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void my_casedn_8bit(CHARSET_INFO * cs, char *str, uint length)
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{
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register uchar *map=cs->to_lower;
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for ( ; length>0 ; length--, str++)
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*str= (char) map[(uchar) *str];
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}
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void my_tosort_8bit(CHARSET_INFO *cs, char *str, uint length)
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{
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register uchar *map=cs->sort_order;
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for ( ; length>0 ; length--, str++)
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*str= (char) map[(uchar) *str];
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}
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int my_strcasecmp_8bit(CHARSET_INFO * cs,const char *s, const char *t)
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{
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register uchar *map=cs->to_upper;
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while (map[(uchar) *s] == map[(uchar) *t++])
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if (!*s++) return 0;
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return ((int) map[(uchar) s[0]] - (int) map[(uchar) t[-1]]);
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}
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int my_strncasecmp_8bit(CHARSET_INFO * cs,
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const char *s, const char *t, uint len)
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{
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register uchar *map=cs->to_upper;
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while (len-- != 0 && map[(uchar)*s++] == map[(uchar)*t++]) ;
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return (int) len+1;
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}
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int my_mb_wc_8bit(CHARSET_INFO *cs,my_wc_t *wc,
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const unsigned char *str,
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const unsigned char *end __attribute__((unused)))
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{
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*wc=cs->tab_to_uni[*str];
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return (!wc[0] && str[0]) ? MY_CS_ILSEQ : 1;
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}
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int my_wc_mb_8bit(CHARSET_INFO *cs,my_wc_t wc,
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unsigned char *s,
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unsigned char *e __attribute__((unused)))
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{
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MY_UNI_IDX *idx;
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for(idx=cs->tab_from_uni; idx->tab ; idx++){
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if(idx->from<=wc && idx->to>=wc){
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s[0]=idx->tab[wc-idx->from];
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return (!s[0] && wc) ? MY_CS_ILUNI : 1;
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}
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}
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return MY_CS_ILUNI;
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}
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