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sql_string.cc:

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Use of new CHARSET_INFO function


sql/sql_string.cc:
  Use of new CHARSET_INFO function
This commit is contained in:
unknown 2003-01-31 14:01:49 +04:00
parent a6438797a9
commit 2bce5e5709
1 changed files with 4 additions and 60 deletions
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64
sql/sql_string.cc
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@ -573,66 +573,10 @@ void String::qs_append(const char &c)
int sortcmp(const String *x,const String *y)
{
const char *s= x->ptr();
const char *t= y->ptr();
uint32 x_len=x->length(),y_len=y->length(),len=min(x_len,y_len);
if (use_strnxfrm(x->str_charset))
{
#ifndef CMP_ENDSPACE
while (x_len && my_isspace(x->str_charset,s[x_len-1]))
x_len--;
while (y_len && my_isspace(x->str_charset,t[y_len-1]))
y_len--;
#endif
return my_strnncoll(x->str_charset,
(unsigned char *)s,x_len,(unsigned char *)t,y_len);
}
else
{
x_len-=len; // For easy end space test
y_len-=len;
if (x->str_charset->sort_order)
{
while (len--)
{
if (x->str_charset->sort_order[(uchar) *s++] !=
x->str_charset->sort_order[(uchar) *t++])
return ((int) x->str_charset->sort_order[(uchar) s[-1]] -
(int) x->str_charset->sort_order[(uchar) t[-1]]);
}
}
else
{
while (len--)
{
if (*s++ != *t++)
return ((int) s[-1] - (int) t[-1]);
}
}
#ifndef CMP_ENDSPACE
/* Don't compare end space in strings */
{
if (y_len)
{
const char *end=t+y_len;
for (; t != end ; t++)
if (!my_isspace(x->str_charset,*t))
return -1;
}
else
{
const char *end=s+x_len;
for (; s != end ; s++)
if (!my_isspace(x->str_charset,*s))
return 1;
}
return 0;
}
#else
return (int) (x_len-y_len);
#endif /* CMP_ENDSPACE */
}
CHARSET_INFO *cs= x->str_charset;
return cs->strnncollsp(cs,
(unsigned char *) x->ptr(),x->length(),
(unsigned char *) y->ptr(),y->length());
}