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139.1.2
by Stewart Smith
CRC32() as UDF |
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/* Copyright (C) 2006 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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212.5.39
by Monty Taylor
Phew. Moved my_base and my_global. |
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#include <drizzled/mysql_priv.h> |
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139.1.2
by Stewart Smith
CRC32() as UDF |
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#include <stdlib.h> |
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#include <ctype.h> |
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212.5.10
by Monty Taylor
Moved drizzle/plugin*h to drizzled |
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#include <drizzled/plugin.h> |
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139.1.2
by Stewart Smith
CRC32() as UDF |
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#include <zlib.h> |
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139.1.4
by Stewart Smith
merge mainline and update md5 and crc32 plugins to new interface |
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bool udf_init_crc32udf(UDF_INIT *initid, UDF_ARGS *args, char *message) |
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139.1.2
by Stewart Smith
CRC32() as UDF |
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{
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/* initid->ptr keeps state for between udf_init_foo and udf_deinit_foo */
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initid->ptr= NULL; |
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if (args->arg_count != 1) |
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{
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strcpy(message,"CRC32() requires one arguments"); |
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return 1; |
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}
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if (args->arg_type[0] != STRING_RESULT) |
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{
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strcpy(message,"CRC32() requires a string"); |
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return 1; |
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}
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return 0; |
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}
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long long udf_doit_crc32(UDF_INIT *initid, UDF_ARGS *args, char *result, |
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unsigned long *length, char *is_null, char *error) |
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{
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139.1.4
by Stewart Smith
merge mainline and update md5 and crc32 plugins to new interface |
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(void)initid; |
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(void)result; |
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(void)length; |
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(void)is_null; |
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(void)error; |
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return (long long) crc32(0L, (uchar*)args->args[0], args->lengths[0]); |
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139.1.2
by Stewart Smith
CRC32() as UDF |
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}
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void udf_deinit_crc32udf(UDF_INIT *initid) |
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{
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139.1.4
by Stewart Smith
merge mainline and update md5 and crc32 plugins to new interface |
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(void)initid; |
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139.1.2
by Stewart Smith
CRC32() as UDF |
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/* if we allocated initid->ptr, free it here */
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return; |
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}
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static int crc32udf_plugin_init(void *p) |
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{
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udf_func *udff= (udf_func *) p; |
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139.1.4
by Stewart Smith
merge mainline and update md5 and crc32 plugins to new interface |
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static char crc32str[6]; |
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strcpy(crc32str,"crc32"); |
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udff->name.str= crc32str; |
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139.1.2
by Stewart Smith
CRC32() as UDF |
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udff->name.length= strlen("crc32"); |
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udff->type= UDFTYPE_FUNCTION; |
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udff->returns= INT_RESULT; |
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udff->func_init= udf_init_crc32udf; |
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udff->func_deinit= udf_deinit_crc32udf; |
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udff->func= (Udf_func_any) udf_doit_crc32; |
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return 0; |
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}
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static int crc32udf_plugin_deinit(void *p) |
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{
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udf_func *udff = (udf_func *) p; |
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139.1.4
by Stewart Smith
merge mainline and update md5 and crc32 plugins to new interface |
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(void)udff; |
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139.1.2
by Stewart Smith
CRC32() as UDF |
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return 0; |
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}
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139.1.4
by Stewart Smith
merge mainline and update md5 and crc32 plugins to new interface |
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mysql_declare_plugin(crc32) |
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139.1.2
by Stewart Smith
CRC32() as UDF |
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{
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MYSQL_UDF_PLUGIN, |
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"crc32", |
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139.1.4
by Stewart Smith
merge mainline and update md5 and crc32 plugins to new interface |
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"1.0", |
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139.1.2
by Stewart Smith
CRC32() as UDF |
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"Stewart Smith", |
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"UDF for computing CRC32", |
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PLUGIN_LICENSE_GPL, |
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crc32udf_plugin_init, /* Plugin Init */ |
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crc32udf_plugin_deinit, /* Plugin Deinit */ |
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NULL, /* status variables */ |
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NULL, /* system variables */ |
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NULL /* config options */ |
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}
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mysql_declare_plugin_end; |