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/* Copyright (C) 2003 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; version 2 of the License.
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
/* Some useful string utility functions used by the MySQL server */
#include <config.h>
#include <drizzled/typelib.h>
#include <drizzled/charset.h>
namespace drizzled {
/*
Function to find a string in a TYPELIB
(Same format as mysys/typelib.c)
SYNOPSIS
find_type()
lib TYPELIB (struct of pointer to values + count)
find String to find
length Length of string to find
part_match Allow part matching of value
RETURN
0 error
> 0 position in TYPELIB->type_names +1
*/
uint32_t TYPELIB::find_type(const char *find, uint32_t length, bool part_match) const
{
uint32_t found_count=0, found_pos=0;
const char* end= find + length;
const char* i;
const char* j;
for (uint32_t pos= 0 ; (j= type_names[pos++]); )
{
for (i= find ; i != end && system_charset_info->toupper(*i) == system_charset_info->toupper(*j); i++, j++)
{
}
if (i == end)
{
if (not *j)
return pos;
found_count++;
found_pos= pos;
}
}
return found_count == 1 && part_match ? found_pos : 0;
}
/*
Find a string in a list of strings according to collation
SYNOPSIS
find_type2()
lib TYPELIB (struct of pointer to values + count)
x String to find
length String length
cs Character set + collation to use for comparison
NOTES
RETURN
0 No matching value
>0 Offset+1 in typelib for matched string
*/
uint32_t TYPELIB::find_type2(const char *x, uint32_t length, const charset_info_st *cs) const
{
if (!count)
return 0;
const char *j;
for (int pos=0 ; (j= type_names[pos]) ; pos++)
{
if (!my_strnncoll(cs, (const unsigned char*) x, length,
(const unsigned char*) j, type_lengths[pos]))
return pos + 1;
}
return 0;
} /* find_type */
} /* namespace drizzled */
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