Drizzled Public API Documentation

ord.cc
1 /* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2  * vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
3  *
4  * Copyright (C) 2008 Sun Microsystems, Inc.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; version 2 of the License.
9  *
10  * This program is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program; if not, write to the Free Software
17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18  */
19 
20 #include <config.h>
21 
22 #include "ord.h"
23 
24 #include <drizzled/charset.h>
25 #include <drizzled/type/decimal.h>
26 
27 namespace drizzled
28 {
29 
31 {
32  assert(fixed == 1);
33  String *res=args[0]->val_str(&value);
34  if (!res)
35  {
36  null_value=1;
37  return 0;
38  }
39  null_value=0;
40  if (!res->length()) return 0;
41  if (use_mb(res->charset()))
42  {
43  register const char *str=res->ptr();
44  register uint32_t n=0, l=my_ismbchar(res->charset(),str,str+res->length());
45  if (!l)
46  return (int64_t)((unsigned char) *str);
47  while (l--)
48  n=(n<<8)|(uint32_t)((unsigned char) *str++);
49  return (int64_t) n;
50  }
51  return (int64_t) ((unsigned char) (*res)[0]);
52 }
53 
54 } /* namespace drizzled */
bool fixed
Definition: item.h:120
int64_t val_int()
Definition: ord.cc:30
TODO: Rename this file - func.h is stupid.
bool null_value
Definition: item.h:122
virtual String * val_str(String *str)=0