127 lines
3.1 KiB
C++
127 lines
3.1 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#define USING_LOG_PREFIX SHARE
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#include <string.h>
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#include <ctype.h>
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#include "ob_list_parser.h"
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#include "lib/ob_errno.h"
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#include "lib/utility/ob_macro_utils.h"
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#include "lib/oblog/ob_log.h"
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using namespace oceanbase::common;
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namespace oceanbase
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{
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namespace share
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{
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int ObListParser::match(int sym)
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{
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int ret = OB_SUCCESS;
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if (sym != token_) {
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ret = OB_INVALID_ARGUMENT;
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} else {
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if (sym == SYM_VALUE && NULL != cb_) {
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ret = cb_->match(value_buf_);
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}
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if (OB_SUCC(ret)) {
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ret = get_token();
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}
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}
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return ret;
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}
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int ObListParser::get_token()
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{
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int ret = OB_SUCCESS;
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while (OB_SUCC(ret)) {
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if ('\0' == *cur_) {
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token_ = SYM_END;
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break;
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} else if (SYM_LIST_SEP == *cur_) {
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cur_++;
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token_ = SYM_LIST_SEP;
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break;
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} else if (isspace(*cur_)) {
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if (allow_space_) {
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cur_++; // Skip the spaces before and after the token
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} else {
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ret = OB_INVALID_ARGUMENT;
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}
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} else if (isprint(*cur_)) {
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const char *start = cur_;
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while (isprint(*cur_) && !isspace(*cur_) && SYM_LIST_SEP != *cur_ && '\0' != *cur_) {
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cur_++;
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}
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if (cur_ - start >= MAX_TOKEN_SIZE) {
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ret = OB_SIZE_OVERFLOW;
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LOG_WARN("token size is too large", "actual", cur_ - start, K(ret));
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} else {
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STRNCPY(value_buf_, start, cur_ - start);
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value_buf_[cur_ - start] = '\0';
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token_ = SYM_VALUE;
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}
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break;
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} else {
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// Unknown character
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ret = OB_INVALID_ARGUMENT;
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}
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}
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return ret;
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}
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int ObListParser::parse(const char *data)
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{
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int ret = OB_SUCCESS;
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bool finish = false;
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if (OB_ISNULL(data)) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("null data ptr", K(ret));
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} else {
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cur_ = data;
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ret = get_token();
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}
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while (OB_SUCC(ret) && !finish) {
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if (SYM_END == token_) {
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if (OB_FAIL(match(SYM_END))) {
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LOG_WARN("fail match SYM_END");
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} else {
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finish = true;
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}
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} else if (SYM_VALUE == token_) {
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if (OB_FAIL(match(SYM_VALUE))) {
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LOG_WARN("fail match value");
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}
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} else if (SYM_LIST_SEP == token_) {
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if (OB_FAIL(match(SYM_LIST_SEP))) {
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LOG_WARN("fail match SYM_LIST_SEP");
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} else if (OB_FAIL(match(SYM_VALUE))) {
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LOG_WARN("fail match value");
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}
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} else {
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ret = OB_INVALID_ARGUMENT;
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}
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}
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if (OB_SUCC(ret) && NULL != cb_) {
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if (false == cb_->finish()) {
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ret = OB_INVALID_ARGUMENT;
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LOG_WARN("fail check parsed data", K(ret));
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}
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}
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return ret;
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}
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}/* ns share*/
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}/* ns oceanbase */
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