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/**
* Copyright (c) 2021 OceanBase
* OceanBase CE is licensed under Mulan PubL v2.
* You can use this software according to the terms and conditions of the Mulan PubL v2.
* You may obtain a copy of Mulan PubL v2 at:
* http://license.coscl.org.cn/MulanPubL-2.0
* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
* See the Mulan PubL v2 for more details.
*/
#include "sql_parser_base.h"
#define YY_EXTRA_TYPE void *
#define yyconst const
typedef void* yyscan_t;
typedef struct yy_buffer_state *YY_BUFFER_STATE;
#define IS_ORACLE_MODE(mode) (0 != (mode & SMO_ORACLE))
#define IS_ORACLE_COMPATIBLE (IS_ORACLE_MODE(p->sql_mode_))
extern int obsql_mysql_yylex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr_yy_globals );
extern int obsql_mysql_yyparse(ParseResult *result);
extern int obsql_mysql_multi_fast_parse(ParseResult *p);
extern int obsql_mysql_multi_values_parse(ParseResult *p);
extern int obsql_mysql_fast_parse(ParseResult *p);
extern int obsql_mysql_yylex_destroy (yyscan_t yyscanner );
extern YY_BUFFER_STATE obsql_mysql_yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
extern void obsql_mysql_yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
extern void obsql_mysql_yy_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
#ifdef OB_BUILD_ORACLE_PARSER
extern int obsql_oracle_latin1_yylex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr_yy_globals );
extern int obsql_oracle_latin1_yyparse(ParseResult *result);
extern int obsql_oracle_latin1_multi_fast_parse(ParseResult *p);
extern int obsql_oracle_latin1_multi_values_parse(ParseResult *p);
extern int obsql_oracle_latin1_fast_parse(ParseResult *p);
extern int obsql_oracle_latin1_yylex_destroy (yyscan_t yyscanner );
extern YY_BUFFER_STATE obsql_oracle_latin1_yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
extern void obsql_oracle_latin1_yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
extern void obsql_oracle_latin1_yy_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
extern int obsql_oracle_utf8_yylex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr_yy_globals );
extern int obsql_oracle_utf8_yyparse(ParseResult *result);
extern int obsql_oracle_utf8_multi_fast_parse(ParseResult *p);
extern int obsql_oracle_utf8_multi_values_parse(ParseResult *p);
extern int obsql_oracle_utf8_fast_parse(ParseResult *p);
extern int obsql_oracle_utf8_yylex_destroy (yyscan_t yyscanner );
extern YY_BUFFER_STATE obsql_oracle_utf8_yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
extern void obsql_oracle_utf8_yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
extern void obsql_oracle_utf8_yy_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
extern int obsql_oracle_gbk_yylex_init_extra(YY_EXTRA_TYPE yy_user_defined,yyscan_t* ptr_yy_globals );
extern int obsql_oracle_gbk_yyparse(ParseResult *result);
extern int obsql_oracle_gbk_multi_fast_parse(ParseResult *p);
extern int obsql_oracle_gbk_multi_values_parse(ParseResult *p);
extern int obsql_oracle_gbk_fast_parse(ParseResult *p);
extern int obsql_oracle_gbk_yylex_destroy (yyscan_t yyscanner );
extern YY_BUFFER_STATE obsql_oracle_gbk_yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
extern void obsql_oracle_gbk_yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
extern void obsql_oracle_gbk_yy_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
#endif
int parse_init(ParseResult *p)
{
int ret = 0; // can not include C++ file "ob_define.h"
static __thread char error_msg[MAX_ERROR_MSG] = {'\0'};
p->error_msg_ = error_msg;
if (OB_UNLIKELY(NULL == p || NULL == p->malloc_pool_)) {
ret = -1;
if (NULL != p) {
(void)snprintf(p->error_msg_, MAX_ERROR_MSG, "malloc_pool_ must be set");
}
}
if (OB_LIKELY( 0 == ret)) {
#ifdef OB_BUILD_ORACLE_PARSER
if (IS_ORACLE_COMPATIBLE) {
switch (p->connection_collation_) {
case 28/*CS_TYPE_GBK_CHINESE_CI*/:
case 87/*CS_TYPE_GBK_BIN*/:
case 216/*CS_TYPE_GB18030_2022_BIN*/:
case 217/*CS_TYPE_GB18030_2022_PINYIN_CI*/:
case 218/*CS_TYPE_GB18030_2022_PINYIN_CS*/:
case 219/*CS_TYPE_GB18030_2022_RADICAL_CI*/:
case 220/*CS_TYPE_GB18030_2022_RADICAL_CS*/:
case 221/*CS_TYPE_GB18030_2022_STROKE_CI*/:
case 222/*CS_TYPE_GB18030_2022_STROKE_CS*/:
case 248/*CS_TYPE_GB18030_CHINESE_CI*/:
case 249/*CS_TYPE_GB18030_BIN*/:
ret = obsql_oracle_gbk_yylex_init_extra(p, &(p->yyscan_info_));
break;
case 45/*CS_TYPE_UTF8MB4_GENERAL_CI*/:
case 46/*CS_TYPE_UTF8MB4_BIN*/:
case 63/*CS_TYPE_BINARY*/:
case 224/*CS_TYPE_UTF8MB4_UNICODE_CI*/:
ret = obsql_oracle_utf8_yylex_init_extra(p, &(p->yyscan_info_));
break;
case 8/*CS_TYPE_LATIN1_SWEDISH_CI*/:
case 47/*CS_TYPE_LATIN1_BIN*/:
ret = obsql_oracle_latin1_yylex_init_extra(p, &(p->yyscan_info_));
break;
default: {
ret = -1;
(void)snprintf(p->error_msg_, MAX_ERROR_MSG, "get not support connection collation: %u",
p->connection_collation_);
break;
}
}
} else {
#endif
ret = obsql_mysql_yylex_init_extra(p, &(p->yyscan_info_));
#ifdef OB_BUILD_ORACLE_PARSER
}
#endif
}
return ret;
}
int parse_terminate(ParseResult *p)
{
int ret = 0;
if (OB_LIKELY(NULL != p->yyscan_info_)) {
#ifdef OB_BUILD_ORACLE_PARSER
if (IS_ORACLE_COMPATIBLE) {
switch (p->connection_collation_) {
case 28/*CS_TYPE_GBK_CHINESE_CI*/:
case 87/*CS_TYPE_GBK_BIN*/:
case 216/*CS_TYPE_GB18030_2022_BIN*/:
case 217/*CS_TYPE_GB18030_2022_PINYIN_CI*/:
case 218/*CS_TYPE_GB18030_2022_PINYIN_CS*/:
case 219/*CS_TYPE_GB18030_2022_RADICAL_CI*/:
case 220/*CS_TYPE_GB18030_2022_RADICAL_CS*/:
case 221/*CS_TYPE_GB18030_2022_STROKE_CI*/:
case 222/*CS_TYPE_GB18030_2022_STROKE_CS*/:
case 248/*CS_TYPE_GB18030_CHINESE_CI*/:
case 249/*CS_TYPE_GB18030_BIN*/:
ret = obsql_oracle_gbk_yylex_destroy(p->yyscan_info_);
break;
case 45/*CS_TYPE_UTF8MB4_GENERAL_CI*/:
case 46/*CS_TYPE_UTF8MB4_BIN*/:
case 63/*CS_TYPE_BINARY*/:
case 224/*CS_TYPE_UTF8MB4_UNICODE_CI*/:
ret = obsql_oracle_utf8_yylex_destroy(p->yyscan_info_);
break;
case 8/*CS_TYPE_LATIN1_SWEDISH_CI*/:
case 47/*CS_TYPE_LATIN1_BIN*/:
ret = obsql_oracle_latin1_yylex_destroy(p->yyscan_info_);
break;
default: {
ret = -1;
(void)snprintf(p->error_msg_, MAX_ERROR_MSG, "get not support connection collation: %u",
p->connection_collation_);
break;
}
}
} else {
#endif
ret = obsql_mysql_yylex_destroy(p->yyscan_info_);
#ifdef OB_BUILD_ORACLE_PARSER
}
#endif
}
return ret;
}
int parse_sql(ParseResult *p, const char *buf, size_t input_len)
{
int ret = OB_PARSER_ERR_PARSE_SQL;
if (OB_UNLIKELY(NULL == p)) {
} else if (OB_UNLIKELY(NULL == buf || input_len <= 0 || input_len > INT32_MAX)) {
snprintf(p->error_msg_, MAX_ERROR_MSG, "Input SQL can not be empty");
ret = OB_PARSER_ERR_EMPTY_QUERY;
} else {
const int32_t len = (int32_t)input_len;
p->input_sql_ = buf;
p->input_sql_len_ = len;
p->start_col_ = 1;
p->end_col_ = 1;
p->line_ = 1;
p->yycolumn_ = 1;
p->yylineno_ = 1;
#ifdef SQL_PARSER_COMPILATION
p->realloc_cnt_ = p->realloc_cnt_ <= 0 ? 10 : p->realloc_cnt_;
p->comment_cap_ = p->realloc_cnt_;
p->comment_cnt_ = 0;
p->stop_add_comment_ = false;
#endif
if (false == p->pl_parse_info_.is_pl_parse_ && !p->is_for_udr_) {//如果是PLParse调用的该接口，不去重置
p->question_mark_ctx_.count_ = 0;
}
// 删除SQL语句末尾的空格 (外层已做)
// while (len > 0 && ISSPACE(buf[len - 1])) {
// --len;
// }
//if (OB_UNLIKELY(len <= 0)) {
// (void)snprintf(p->error_msg_, MAX_ERROR_MSG, "Input SQL can not be white space only");
// ret = OB_PARSER_ERR_EMPTY_QUERY;
// } else {
{
static __thread jmp_buf jmp_buf_;
p->jmp_buf_ = &jmp_buf_;
int val = setjmp(*(p->jmp_buf_));
if (val) {
if (p->extra_errno_ == OB_PARSER_ERR_NO_MEMORY) {
// for error other than NO_MEMORY, we return OB_PARSER_ERR_PARSE_SQL to avoid lost connection.
ret = OB_PARSER_ERR_NO_MEMORY;
} else {
ret = OB_PARSER_ERR_PARSE_SQL;
}
#ifdef SQL_PARSER_COMPILATION
} else if (OB_ISNULL(p->comment_list_ = (TokenPosInfo*)(parse_malloc(
p->realloc_cnt_ * sizeof(TokenPosInfo),
p->malloc_pool_)))) {
ret = OB_PARSER_ERR_NO_MEMORY;
#endif
} else {
#ifdef OB_BUILD_ORACLE_PARSER
if (IS_ORACLE_COMPATIBLE) {
switch (p->connection_collation_) {
case 28/*CS_TYPE_GBK_CHINESE_CI*/:
case 87/*CS_TYPE_GBK_BIN*/:
case 216/*CS_TYPE_GB18030_2022_BIN*/:
case 217/*CS_TYPE_GB18030_2022_PINYIN_CI*/:
case 218/*CS_TYPE_GB18030_2022_PINYIN_CS*/:
case 219/*CS_TYPE_GB18030_2022_RADICAL_CI*/:
case 220/*CS_TYPE_GB18030_2022_RADICAL_CS*/:
case 221/*CS_TYPE_GB18030_2022_STROKE_CI*/:
case 222/*CS_TYPE_GB18030_2022_STROKE_CS*/:
case 248/*CS_TYPE_GB18030_CHINESE_CI*/:
case 249/*CS_TYPE_GB18030_BIN*/: {
YY_BUFFER_STATE bp = obsql_oracle_gbk_yy_scan_bytes(buf, len, p->yyscan_info_);
obsql_oracle_gbk_yy_switch_to_buffer(bp, p->yyscan_info_);
int tmp_ret = -1;
if (p->is_fp_) {
tmp_ret = obsql_oracle_gbk_fast_parse(p);
} else if (p->is_multi_query_) {
tmp_ret = obsql_oracle_gbk_multi_fast_parse(p);
} else if (p->is_multi_values_parser_) {
tmp_ret = obsql_oracle_gbk_multi_values_parse(p);
} else {
tmp_ret = obsql_oracle_gbk_yyparse(p);
}
if (0 == tmp_ret) {
ret = OB_PARSER_SUCCESS;
} else if (2 == tmp_ret) {
ret = OB_PARSER_ERR_NO_MEMORY;
} else {
if (0 != p->extra_errno_) {
ret = p->extra_errno_;
} else {
ret = OB_PARSER_ERR_PARSE_SQL;
}
}
obsql_oracle_gbk_yy_delete_buffer(bp, p->yyscan_info_);
break;
}
case 45/*CS_TYPE_UTF8MB4_GENERAL_CI*/:
case 46/*CS_TYPE_UTF8MB4_BIN*/:
case 63/*CS_TYPE_BINARY*/:
case 224/*CS_TYPE_UTF8MB4_UNICODE_CI*/:{
YY_BUFFER_STATE bp = obsql_oracle_utf8_yy_scan_bytes(buf, len, p->yyscan_info_);
obsql_oracle_utf8_yy_switch_to_buffer(bp, p->yyscan_info_);
int tmp_ret = -1;
if (p->is_fp_) {
tmp_ret = obsql_oracle_utf8_fast_parse(p);
} else if (p->is_multi_query_) {
tmp_ret = obsql_oracle_utf8_multi_fast_parse(p);
} else if (p->is_multi_values_parser_) {
tmp_ret = obsql_oracle_utf8_multi_values_parse(p);
} else {
tmp_ret = obsql_oracle_utf8_yyparse(p);
}
if (0 == tmp_ret) {
ret = OB_PARSER_SUCCESS;
} else if (2 == tmp_ret) {
ret = OB_PARSER_ERR_NO_MEMORY;
} else {
if (0 != p->extra_errno_) {
ret = p->extra_errno_;
} else {
ret = OB_PARSER_ERR_PARSE_SQL;
}
}
obsql_oracle_utf8_yy_delete_buffer(bp, p->yyscan_info_);
break;
}
case 8/*CS_TYPE_LATIN1_SWEDISH_CI*/:
case 47/*CS_TYPE_LATIN1_BIN*/:{
YY_BUFFER_STATE bp = obsql_oracle_latin1_yy_scan_bytes(buf, len, p->yyscan_info_);
obsql_oracle_latin1_yy_switch_to_buffer(bp, p->yyscan_info_);
int tmp_ret = -1;
if (p->is_fp_) {
tmp_ret = obsql_oracle_latin1_fast_parse(p);
} else if (p->is_multi_query_) {
tmp_ret = obsql_oracle_latin1_multi_fast_parse(p);
} else if (p->is_multi_values_parser_) {
tmp_ret = obsql_oracle_latin1_multi_values_parse(p);
} else {
tmp_ret = obsql_oracle_latin1_yyparse(p);
}
if (0 == tmp_ret) {
ret = OB_PARSER_SUCCESS;
} else if (2 == tmp_ret) {
ret = OB_PARSER_ERR_NO_MEMORY;
} else {
if (0 != p->extra_errno_) {
ret = p->extra_errno_;
} else {
ret = OB_PARSER_ERR_PARSE_SQL;
}
}
obsql_oracle_latin1_yy_delete_buffer(bp, p->yyscan_info_);
break;
}
default: {
ret = OB_PARSER_ERR_UNEXPECTED;
(void)snprintf(p->error_msg_, MAX_ERROR_MSG, "get not support conn collation: %u",
p->connection_collation_);
break;
}
}
#endif
#ifdef OB_BUILD_ORACLE_PARSER
} else {
#endif
YY_BUFFER_STATE bp = obsql_mysql_yy_scan_bytes(buf, len, p->yyscan_info_);
obsql_mysql_yy_switch_to_buffer(bp, p->yyscan_info_);
int tmp_ret = -1;
if (p->is_fp_) {
tmp_ret = obsql_mysql_fast_parse(p);
} else if (p->is_multi_query_) {
tmp_ret = obsql_mysql_multi_fast_parse(p);
} else if (p->is_multi_values_parser_) {
tmp_ret = obsql_mysql_multi_values_parse(p);
} else {
tmp_ret = obsql_mysql_yyparse(p);
}
if (0 == tmp_ret) {
ret = OB_PARSER_SUCCESS;
} else if (2 == tmp_ret) {
ret = OB_PARSER_ERR_NO_MEMORY;
} else {
if (0 != p->extra_errno_) {
ret = p->extra_errno_;
} else {
ret = OB_PARSER_ERR_PARSE_SQL;
}
}
obsql_mysql_yy_delete_buffer(bp, p->yyscan_info_);
#ifdef OB_BUILD_ORACLE_PARSER
}
#endif
}
}
}
return ret;
}
int parse_sql_stmt(ParseResult *parse_result)
{
int ret = -1;
if (0 != (ret = parse_init(parse_result))) {
// fix bug #16298144
// fprintf(stderr, "init parse result failed, ret=%d\n", ret);
} else if (0 != (ret = parse_sql(parse_result, parse_result->input_sql_, parse_result->input_sql_len_))) {
// fix bug #16298144
// fprintf(stderr, "parse sql failed, ret=%d, input_sql=%.*s\n", ret, parse_result->input_sql_len_, parse_result->input_sql_);
}
return ret;
}
void setup_token_pos_info(ParseNode *node, int off, int len)
{
#ifdef SQL_PARSER_COMPILATION
if (node != NULL) {
node->token_off_ = off;
node->token_len_ = len;
}
#else
// do nothing
#endif
}
int setup_token_pos_info_and_dup_string(ParseNode *node,
ParseResult *result,
int start,
int end)
{
int ret = OB_PARSER_SUCCESS;
#ifdef SQL_PARSER_COMPILATION
node->token_off_ = start - 1;
node->token_len_ = end - start + 1;
if (start > end) {
ret = OB_PARSER_ERR_UNEXPECTED;
} else if (OB_UNLIKELY((NULL == (node->str_value_ = copy_expr_string(result,
start,
end))))) {
ret = OB_PARSER_ERR_NO_MEMORY;
} else {
node->str_len_ = end - start + 1;
}
#else
// do nothing
#endif
return ret;
}
#ifdef SQL_PARSER_COMPILATION
int add_comment_list(ParseResult *p, const TokenPosInfo *info)
{
int ret = OB_PARSER_SUCCESS;
if (OB_ISNULL(p) || OB_ISNULL(info)) {
ret = OB_PARSER_ERR_UNEXPECTED;
}
if (OB_PARSER_SUCCESS == ret && p->comment_cnt_ + 1 >= p->comment_cap_) {
int alloc_cnt = p->comment_cnt_ + p->realloc_cnt_;
char *buf = parse_malloc(sizeof(TokenPosInfo) * alloc_cnt, p->malloc_pool_);
if (OB_ISNULL(buf)) {
ret = OB_PARSER_ERR_NO_MEMORY;
} else {
memset(buf, 0, sizeof(TokenPosInfo) * alloc_cnt);
memcpy(buf, (void*)(p->comment_list_), sizeof(TokenPosInfo) * p->comment_cnt_);
p->comment_list_ = (TokenPosInfo*)buf;
p->comment_cap_ += p->realloc_cnt_;
}
}
if (OB_PARSER_SUCCESS == ret) {
p->comment_list_[p->comment_cnt_].token_off_ = info->token_off_;
p->comment_list_[p->comment_cnt_].token_len_ = info->token_len_;
p->comment_cnt_ += 1;
}
return ret;
}
#endif
void REPUT_NEG_SIGN(ParseResult *p)
{
if (p->minus_ctx_.has_minus_) {
int start_pos = p->no_param_sql_len_;
int end_pos = p->minus_ctx_.pos_;
for (; start_pos > end_pos; start_pos--) {
p->no_param_sql_[start_pos] = p->no_param_sql_[start_pos - 1];
}
p->no_param_sql_[end_pos] = '-';
p->no_param_sql_[++p->no_param_sql_len_] = '\0';
p->minus_ctx_.pos_ = -1;
p->minus_ctx_.raw_sql_offset_ = -1;
p->minus_ctx_.has_minus_ = false;
}
}
int STORE_PARAM_NODE_NEED_PARAMETERIZE(ParamList *param,
struct _ParseNode *node, ParseResult *p, const int first_column)
{
if (p->minus_ctx_.has_minus_ && p->minus_ctx_.is_cur_numeric_) {
p->no_param_sql_[p->minus_ctx_.pos_] = '?';
p->no_param_sql_len_ = p->minus_ctx_.pos_ + 1;
} else {
REPUT_NEG_SIGN(p);
p->no_param_sql_[p->no_param_sql_len_++] = '?';
}
p->no_param_sql_[p->no_param_sql_len_] = '\0';
node->pos_ = p->no_param_sql_len_ - 1;
node->raw_sql_offset_ = (p->minus_ctx_.has_minus_
&& p->minus_ctx_.is_cur_numeric_) ?
p->minus_ctx_.raw_sql_offset_ : first_column - 1;
param->node_ = node;
param->next_ = NULL;
if (NULL == p->param_nodes_) {
p->param_nodes_ = param;
} else {
p->tail_param_node_->next_ = param;
}
p->tail_param_node_ = param;
p->param_node_num_++;
p->token_num_++;
p->minus_ctx_.has_minus_ = false;
p->minus_ctx_.pos_ = -1;
p->minus_ctx_.is_cur_numeric_ = false;
p->minus_ctx_.raw_sql_offset_ = -1;
return 0;
}
int add_alias_name(ParseNode *node, ParseResult *result, int end)
{
int ret = OB_PARSER_SUCCESS;
if (NULL == node || NULL == result || NULL == node->str_value_) {
ret = OB_PARSER_ERR_UNEXPECTED;
} else {
int need_len = strlen(" as ") + node->str_len_ + 2 * strlen("\"");
if (end > result->pl_parse_info_.last_pl_symbol_pos_) {
need_len += end - result->pl_parse_info_.last_pl_symbol_pos_;
}
for (int i = 0; i < node->str_len_; ++i) {
if ('\"' == node->str_value_[i] && !(i > 0 && '\\' == node->str_value_[i - 1])) {
need_len++;
}
}
if (result->no_param_sql_len_ + need_len >= result->no_param_sql_buf_len_) {
char *buf = parse_malloc(result->no_param_sql_buf_len_ * 2, result->malloc_pool_);
if (OB_UNLIKELY(NULL == buf)) {
ret = OB_PARSER_ERR_NO_MEMORY;
} else {
memmove(buf, result->no_param_sql_, result->no_param_sql_len_);
result->no_param_sql_ = buf;
result->no_param_sql_buf_len_ = result->no_param_sql_buf_len_ * 2;
}
}
if (OB_PARSER_SUCCESS == ret) {
if (end > result->pl_parse_info_.last_pl_symbol_pos_) {
memmove(result->no_param_sql_ + result->no_param_sql_len_, result->input_sql_ + result->pl_parse_info_.last_pl_symbol_pos_, end - result->pl_parse_info_.last_pl_symbol_pos_);
result->no_param_sql_len_ += end - result->pl_parse_info_.last_pl_symbol_pos_;
result->pl_parse_info_.last_pl_symbol_pos_ = end;
}
result->no_param_sql_len_ += sprintf(result->no_param_sql_ + result->no_param_sql_len_, "%.*s", (int)strlen(" as "), " as ");
result->no_param_sql_len_ += sprintf(result->no_param_sql_ + result->no_param_sql_len_, "%.*s", (int)strlen("\""), "\"");
int index1 = 0;
int index2 = 0;
char *trans_buf = parse_malloc((int)node->str_len_ * 2, result->malloc_pool_);
if (OB_UNLIKELY(NULL == trans_buf)) {
ret = OB_PARSER_ERR_NO_MEMORY;
} else {
bool is_ansi_quotes = false;
IS_ANSI_QUOTES(result->sql_mode_, is_ansi_quotes);
for (; index1 < node->str_len_; index1++) {
if (is_ansi_quotes && '\"' == node->str_value_[index1]) {
//do nothing, in mysql ansi quotes sql mode: " <==> `, just skip
} else if ('\"' == node->str_value_[index1] && !(index1 > 0 && '\\' == node->str_value_[index1 - 1])) {
trans_buf[index2++] = '\\';
trans_buf[index2++] = '\"';
} else {
trans_buf[index2++] = node->str_value_[index1];
}
}
result->no_param_sql_len_ += sprintf(result->no_param_sql_ + result->no_param_sql_len_, "%.*s", index2, trans_buf);
result->no_param_sql_len_ += sprintf(result->no_param_sql_ + result->no_param_sql_len_, "%.*s", (int)strlen("\""), "\"");
}
}
}
return ret;
}