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"phrase search" should not match partial words (it should not match 'paraphrase searches')

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myisam/ft_parser.c:
  word definition moved to ftdefs.h
myisam/ftdefs.h:
  word definition moved to ftdefs.h
This commit is contained in:
unknown
2003-10-14 16:19:13 +02:00
parent 2e1115edc1
commit f19fff63c2
5 changed files with 25 additions and 22 deletions
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29
myisam/ft_boolean_search.c
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@ -391,25 +391,34 @@ FT_INFO * ft_init_boolean_search(MI_INFO *info, uint keynr, byte *query,
}
/* returns 1 if str0 contain str1 */
/* returns 1 if str0 ~= /\<str1\>/ */
static int _ftb_strstr(const byte *s0, const byte *e0,
const byte *s1, const byte *e1,
CHARSET_INFO *cs)
{
const byte *p;
const byte *p0, *p1;
my_bool s_after, e_before;
while (s0 < e0)
s_after=true_word_char(cs, s1[0]);
e_before=true_word_char(cs, e1[-1]);
p0=s0;
while (p0 < e0)
{
while (s0 < e0 && cs->to_upper[(uint) (uchar) *s0++] !=
while (p0 < e0 && cs->to_upper[(uint) (uchar) *p0++] !=
cs->to_upper[(uint) (uchar) *s1])
/* no-op */;
if (s0 >= e0)
if (p0 >= e0)
return 0;
p=s1+1;
while (s0 < e0 && p < e1 && cs->to_upper[(uint) (uchar) *s0] ==
cs->to_upper[(uint) (uchar) *p])
s0++, p++;
if (p >= e1)
if (s_after && p0-1 > s0 && true_word_char(cs, p0[-2]))
continue;
p1=s1+1;
while (p0 < e0 && p1 < e1 && cs->to_upper[(uint) (uchar) *p0] ==
cs->to_upper[(uint) (uchar) *p1])
p0++, p1++;
if (p1 == e1 && (!e_before || p0 == e0 || !true_word_char(cs, p0[0])))
return 1;
}
return 0;