13
13
along with this program; if not, write to the Free Software
14
14
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
16
19
#include <drizzled/common_includes.h>
20
#include <drizzled/item_func.h>
19
bool udf_init_crc32udf(UDF_INIT *initid, UDF_ARGS *args, char *message)
21
/* initid->ptr keeps state for between udf_init_foo and udf_deinit_foo */
24
if (args->arg_count != 1)
26
strcpy(message,"CRC32() requires one arguments");
30
if (args->arg_type[0] != STRING_RESULT)
32
strcpy(message,"CRC32() requires a string");
39
long long udf_doit_crc32(UDF_INIT *initid, UDF_ARGS *args, char *result,
40
unsigned long *length, char *is_null, char *error)
47
return (long long) crc32(0L, (uchar*)args->args[0], args->lengths[0]);
50
void udf_deinit_crc32udf(UDF_INIT *initid)
53
/* if we allocated initid->ptr, free it here */
23
class Item_func_crc32 :public Item_int_func
27
Item_func_crc32() :Item_int_func() { unsigned_flag= 1; }
28
const char *func_name() const { return "crc32"; }
29
void fix_length_and_dec() { max_length=10; }
33
int64_t Item_func_crc32::val_int()
36
String *res=args[0]->val_str(&value);
40
return 0; /* purecov: inspected */
43
return (int64_t) crc32(0L, (unsigned char*)res->ptr(), res->length());
46
Item_func* create_crc32udf_item(MEM_ROOT* m)
48
return new (m) Item_func_crc32();
51
static struct udf_func crc32udf = {
52
{ C_STRING_WITH_LEN("crc32") },
58
56
static int crc32udf_plugin_init(void *p)
60
udf_func *udff= (udf_func *) p;
61
static char crc32str[6];
63
strcpy(crc32str,"crc32");
65
udff->name.str= crc32str;
66
udff->name.length= strlen("crc32");
67
udff->type= UDFTYPE_FUNCTION;
68
udff->returns= INT_RESULT;
69
udff->func_init= udf_init_crc32udf;
70
udff->func_deinit= udf_deinit_crc32udf;
71
udff->func= (Udf_func_any) udf_doit_crc32;
58
udf_func **f = (udf_func**) p;