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/* - mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 MySQL
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef USE_PRAGMA_IMPLEMENTATION
#pragma implementation // gcc: Class implementation
#endif
#include <drizzled/field/set.h>
/*
set type.
This is a string which can have a collection of different values.
Each string value is separated with a ','.
For example "One,two,five"
If one uses this string in a number context one gets the bits as a int64_t
number.
*/
const char field_separator=',';
int Field_set::store(const char *from,uint length,CHARSET_INFO *cs)
{
bool got_warning= 0;
int err= 0;
char *not_used;
uint not_used2;
uint32_t not_used_offset;
char buff[STRING_BUFFER_USUAL_SIZE];
String tmpstr(buff,sizeof(buff), &my_charset_bin);
/* Convert character set if necessary */
if (String::needs_conversion(length, cs, field_charset, ¬_used_offset))
{
uint dummy_errors;
tmpstr.copy(from, length, cs, field_charset, &dummy_errors);
from= tmpstr.ptr();
length= tmpstr.length();
}
uint64_t tmp= find_set(typelib, from, length, field_charset,
¬_used, ¬_used2, &got_warning);
if (!tmp && length && length < 22)
{
/* This is for reading numbers with LOAD DATA INFILE */
char *end;
tmp=my_strntoull(cs,from,length,10,&end,&err);
if (err || end != from+length ||
tmp > (uint64_t) (((int64_t) 1 << typelib->count) - (int64_t) 1))
{
tmp=0;
set_warning(MYSQL_ERROR::WARN_LEVEL_WARN, WARN_DATA_TRUNCATED, 1);
}
}
else if (got_warning)
set_warning(MYSQL_ERROR::WARN_LEVEL_WARN, WARN_DATA_TRUNCATED, 1);
store_type(tmp);
return err;
}
int Field_set::store(int64_t nr,
bool unsigned_val __attribute__((unused)))
{
int error= 0;
uint64_t max_nr= set_bits(uint64_t, typelib->count);
if ((uint64_t) nr > max_nr)
{
nr&= max_nr;
set_warning(MYSQL_ERROR::WARN_LEVEL_WARN, WARN_DATA_TRUNCATED, 1);
error=1;
}
store_type((uint64_t) nr);
return error;
}
String *Field_set::val_str(String *val_buffer,
String *val_ptr __attribute__((unused)))
{
uint64_t tmp=(uint64_t) Field_enum::val_int();
uint bitnr=0;
val_buffer->length(0);
val_buffer->set_charset(field_charset);
while (tmp && bitnr < (uint) typelib->count)
{
if (tmp & 1)
{
if (val_buffer->length())
val_buffer->append(&field_separator, 1, &my_charset_latin1);
String str(typelib->type_names[bitnr],
typelib->type_lengths[bitnr],
field_charset);
val_buffer->append(str);
}
tmp>>=1;
bitnr++;
}
return val_buffer;
}
void Field_set::sql_type(String &res) const
{
char buffer[255];
String set_item(buffer, sizeof(buffer), res.charset());
res.length(0);
res.append(STRING_WITH_LEN("set("));
bool flag=0;
uint *len= typelib->type_lengths;
for (const char **pos= typelib->type_names; *pos; pos++, len++)
{
uint dummy_errors;
if (flag)
res.append(',');
/* convert to res.charset() == utf8, then quote */
set_item.copy(*pos, *len, charset(), res.charset(), &dummy_errors);
append_unescaped(&res, set_item.ptr(), set_item.length());
flag= 1;
}
res.append(')');
}
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