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/* -*- c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
Copyright(C) 2010 Tetsuro IKEDA
Copyright(C) 2010-2013 Kentoku SHIBA
Copyright(C) 2011-2013 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 02110-1301 USA
*/
#include <mrn_mysql.h>
#include <mrn_mysql_compat.h>
#include <mrn_path_mapper.hpp>
#include <mrn_windows.hpp>
#include <mrn_macro.hpp>
#include <mrn_database_manager.hpp>
extern mrn::DatabaseManager *mrn_db_manager;
MRN_BEGIN_DECLS
struct CommandInfo
{
grn_ctx ctx;
grn_obj *db;
bool use_shared_db;
String result;
};
MRN_API my_bool mroonga_command_init(UDF_INIT *initid, UDF_ARGS *args,
char *message)
{
CommandInfo *info = NULL;
initid->ptr = NULL;
if (args->arg_count != 1) {
sprintf(message,
"mroonga_command(): Incorrect number of arguments: %u for 1",
args->arg_count);
goto error;
}
if (args->arg_type[0] != STRING_RESULT) {
strcpy(message,
"mroonga_command(): The 1st argument must be command as string");
goto error;
}
initid->maybe_null = 1;
initid->const_item = 1;
info = (CommandInfo *)my_malloc(sizeof(CommandInfo),
MYF(MY_WME | MY_ZEROFILL));
if (!info) {
strcpy(message, "mroonga_command(): out of memory");
goto error;
}
grn_ctx_init(&(info->ctx), 0);
{
const char *current_db_path = current_thd->db;
const char *action;
if (current_db_path) {
action = "open database";
int error = mrn_db_manager->open(current_db_path, &(info->db));
if (error == 0) {
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_command(): failed to %s: %s",
action,
info->ctx.errbuf);
goto error;
}
}
initid->ptr = (char *)info;
return FALSE;
error:
if (info) {
if (!info->use_shared_db) {
grn_obj_close(&(info->ctx), info->db);
}
grn_ctx_fin(&(info->ctx));
my_free(info, MYF(0));
}
return TRUE;
}
MRN_API char *mroonga_command(UDF_INIT *initid, UDF_ARGS *args, char *result,
unsigned long *length, char *is_null, char *error)
{
CommandInfo *info = (CommandInfo *)initid->ptr;
grn_ctx *ctx = &(info->ctx);
char *command;
unsigned int command_length;
int flags = 0;
if (!args->args[0]) {
*is_null = 1;
return NULL;
}
*is_null = 0;
command = args->args[0];
command_length = args->lengths[0];
grn_ctx_send(ctx, command, command_length, 0);
if (ctx->rc) {
my_message(ER_ERROR_ON_WRITE, ctx->errbuf, MYF(0));
goto error;
}
info->result.length(0);
do {
char *buffer;
unsigned int buffer_length;
grn_ctx_recv(ctx, &buffer, &buffer_length, &flags);
if (ctx->rc) {
my_message(ER_ERROR_ON_READ, ctx->errbuf, MYF(0));
goto error;
}
if (buffer_length > 0) {
if (info->result.reserve(buffer_length)) {
my_error(ER_OUT_OF_RESOURCES, MYF(0), HA_ERR_OUT_OF_MEM);
goto error;
}
info->result.q_append(buffer, buffer_length);
}
} while (flags & GRN_CTX_MORE);
*length = info->result.length();
return (char *)(info->result.ptr());
error:
*error = 1;
return NULL;
}
MRN_API void mroonga_command_deinit(UDF_INIT *initid)
{
CommandInfo *info = (CommandInfo *)initid->ptr;
if (info) {
if (!info->use_shared_db) {
grn_obj_close(&(info->ctx), info->db);
}
grn_ctx_fin(&(info->ctx));
info->result.free();
my_free(info, MYF(0));
}
}
MRN_END_DECLS
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