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/* -*- c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
Copyright(C) 2015 Naoya Murakami <naoya@createfield.com>
Copyright(C) 2017 Kouhei Sutou <kou@clear-code.com>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
*/
#include <mrn.hpp>
#include <mrn_mysql.h>
#include <mrn_mysql_compat.h>
#include <mrn_encoding.hpp>
#include <mrn_windows.hpp>
#include <mrn_table.hpp>
#include <mrn_macro.hpp>
#include <mrn_database_manager.hpp>
#include <mrn_context_pool.hpp>
#include <mrn_variables.hpp>
#include <mrn_current_thread.hpp>
MRN_BEGIN_DECLS
extern mrn::DatabaseManager *mrn_db_manager;
extern mrn::ContextPool *mrn_context_pool;
#define DEFAULT_NORMALIZER_NAME "NormalizerAuto"
struct st_mrn_normalize_info
{
grn_ctx *ctx;
grn_obj *db;
bool use_shared_db;
grn_obj *normalizer;
int flags;
String result_str;
};
MRN_API my_bool mroonga_normalize_init(UDF_INIT *init, UDF_ARGS *args,
char *message)
{
st_mrn_normalize_info *info = NULL;
String *result_str = NULL;
init->ptr = NULL;
if (!mrn_initialized)
{
snprintf(message,
MYSQL_ERRMSG_SIZE,
"mroonga_normalize(): Mroonga isn't initialized");
goto error;
}
if (!(1 <= args->arg_count && args->arg_count <= 2)) {
sprintf(message,
"mroonga_normalize(): Incorrect number of arguments: %u for 1..2",
args->arg_count);
goto error;
}
if (args->arg_type[0] != STRING_RESULT) {
strcpy(message,
"mroonga_normalize(): The 1st argument must be query as string");
goto error;
}
if (args->arg_count == 2) {
if (args->arg_type[1] != STRING_RESULT) {
strcpy(message,
"mroonga_normalize(): "
"The 2st argument must be normalizer name as string");
goto error;
}
}
init->maybe_null = 1;
info = (st_mrn_normalize_info *)mrn_my_malloc(sizeof(st_mrn_normalize_info),
MYF(MY_WME | MY_ZEROFILL));
if (!info) {
strcpy(message, "mroonga_normalize(): out of memory");
goto error;
}
info->ctx = mrn_context_pool->pull();
{
const char *current_db_path = MRN_THD_DB_PATH(current_thd);
const char *action;
if (current_db_path) {
action = "open database";
mrn::Database *db;
int error = mrn_db_manager->open(current_db_path, &db);
if (error == 0) {
info->db = db->get();
grn_ctx_use(info->ctx, info->db);
info->use_shared_db = true;
}
} else {
action = "create anonymous database";
info->db = grn_db_create(info->ctx, NULL, NULL);
info->use_shared_db = false;
}
if (!info->db) {
sprintf(message,
"mroonga_normalize(): failed to %s: %s",
action,
info->ctx->errbuf);
goto error;
}
}
if (args->arg_count == 1) {
info->normalizer = grn_ctx_get(info->ctx, DEFAULT_NORMALIZER_NAME, -1);
} else {
info->normalizer = grn_ctx_get(info->ctx, args->args[1], args->lengths[1]);
}
if (!info->normalizer) {
sprintf(message, "mroonga_normalize(): nonexistent normalizer %.*s",
(int)args->lengths[1], args->args[1]);
goto error;
}
info->flags = 0;
result_str = &(info->result_str);
mrn::encoding::set_raw(info->ctx, system_charset_info);
result_str->set_charset(system_charset_info);
init->ptr = (char *)info;
return FALSE;
error:
if (info) {
if (!info->use_shared_db) {
grn_obj_close(info->ctx, info->db);
}
mrn_context_pool->release(info->ctx);
my_free(info);
}
return TRUE;
}
MRN_API char *mroonga_normalize(UDF_INIT *init, UDF_ARGS *args, char *result,
unsigned long *length, char *is_null, char *error)
{
st_mrn_normalize_info *info = (st_mrn_normalize_info *)init->ptr;
grn_ctx *ctx = info->ctx;
String *result_str = &(info->result_str);
if (!args->args[0]) {
*is_null = 1;
return NULL;
}
result_str->length(0);
{
char *target = args->args[0];
unsigned int target_length = args->lengths[0];
grn_obj *grn_string;
const char *normalized;
unsigned int normalized_length_in_bytes;
unsigned int normalized_n_characters;
grn_string = grn_string_open(ctx,
target, target_length,
info->normalizer, info->flags);
grn_string_get_normalized(ctx, grn_string,
&normalized,
&normalized_length_in_bytes,
&normalized_n_characters);
if (result_str->reserve(normalized_length_in_bytes)) {
my_error(ER_OUT_OF_RESOURCES, MYF(0), HA_ERR_OUT_OF_MEM);
goto error;
}
result_str->q_append(normalized, normalized_length_in_bytes);
result_str->length(normalized_length_in_bytes);
grn_obj_unlink(ctx, grn_string);
}
*is_null = 0;
if (ctx->rc) {
my_message(ER_ERROR_ON_WRITE, ctx->errbuf, MYF(0));
goto error;
}
*length = result_str->length();
return (char *)result_str->ptr();
error:
*is_null = 1;
*error = 1;
return NULL;
}
MRN_API void mroonga_normalize_deinit(UDF_INIT *init)
{
st_mrn_normalize_info *info = (st_mrn_normalize_info *)init->ptr;
if (info) {
MRN_STRING_FREE(info->result_str);
if (info->normalizer) {
grn_obj_unlink(info->ctx, info->normalizer);
}
if (!info->use_shared_db) {
grn_obj_close(info->ctx, info->db);
}
mrn_context_pool->release(info->ctx);
my_free(info);
}
}
MRN_END_DECLS
|
