diff options
Diffstat (limited to 'strings/ctype-simple.c')
-rw-r--r-- | strings/ctype-simple.c | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/strings/ctype-simple.c b/strings/ctype-simple.c new file mode 100644 index 00000000000..19989afea60 --- /dev/null +++ b/strings/ctype-simple.c @@ -0,0 +1,116 @@ +/* Copyright (C) 2000 MySQL AB + + 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 of the License, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + +#include <my_global.h> +#include "m_ctype.h" +#include "dbug.h" +#include "assert.h" + +int my_strnxfrm_simple(CHARSET_INFO * cs, + char *dest, uint len, + const char *src, uint srclen) +{ + DBUG_ASSERT(len >= srclen); + + for ( ; len > 0 ; len-- ) + *dest++= (char) cs->sort_order[(uchar) *src++]; + return srclen; +} + +int my_strnncoll_simple(CHARSET_INFO * cs,const char *s, uint slen, + const char *t, uint tlen) +{ + int len = ( slen > tlen ) ? tlen : slen; + while (len--) + { + if (cs->sort_order[(uchar) *s++] != cs->sort_order[(uchar) *t++]) + return ((int) cs->sort_order[(uchar) s[-1]] - + (int) cs->sort_order[(uchar) t[-1]]); + } + return (int) (slen-tlen); +} + + +void my_caseup_str_8bit(CHARSET_INFO * cs,char *str) +{ + register uchar *map=cs->to_upper; + while ((*str = (char) map[(uchar) *str]) != 0) + str++; +} + + +void my_casedn_str_8bit(CHARSET_INFO * cs,char *str) +{ + register uchar *map=cs->to_lower; + while ((*str = (char) map[(uchar)*str]) != 0) + str++; +} + + +void my_caseup_8bit(CHARSET_INFO * cs, char *str, uint length) +{ + register uchar *map=cs->to_upper; + for ( ; length>0 ; length--, str++) + *str= (char) map[(uchar)*str]; +} + +void my_casedn_8bit(CHARSET_INFO * cs, char *str, uint length) +{ + register uchar *map=cs->to_lower; + for ( ; length>0 ; length--, str++) + *str= (char) map[(uchar) *str]; +} + + +int my_strcasecmp_8bit(CHARSET_INFO * cs,const char *s, const char *t) +{ + register uchar *map=cs->to_upper; + while (map[(uchar) *s] == map[(uchar) *t++]) + if (!*s++) return 0; + return ((int) map[(uchar) s[0]] - (int) map[(uchar) t[-1]]); +} + + +int my_strncasecmp_8bit(CHARSET_INFO * cs, + const char *s, const char *t, uint len) +{ + register uchar *map=cs->to_upper; + while (len-- != 0 && map[(uchar)*s++] == map[(uchar)*t++]) ; + return (int) len+1; +} + +int my_mb_wc_8bit(CHARSET_INFO *cs,my_wc_t *wc, + const unsigned char *str, + const unsigned char *end __attribute__((unused))) +{ + *wc=cs->tab_to_uni[*str]; + return (!wc[0] && str[0]) ? MY_CS_ILSEQ : 1; +} + +int my_wc_mb_8bit(CHARSET_INFO *cs,my_wc_t wc, + unsigned char *s, + unsigned char *e __attribute__((unused))) +{ + MY_UNI_IDX *idx; + + for(idx=cs->tab_from_uni; idx->tab ; idx++){ + if(idx->from<=wc && idx->to>=wc){ + s[0]=idx->tab[wc-idx->from]; + return (!s[0] && wc) ? MY_CS_ILUNI : 1; + } + } + return MY_CS_ILUNI; +} |