67 lines
2.0 KiB
C++
67 lines
2.0 KiB
C++
// Modifications copyright (C) 2017, Baidu.com, Inc.
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// Copyright 2017 The Apache Software Foundation
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// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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#include <boost/algorithm/string.hpp>
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#include "runtime/descriptors.h"
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#include "runtime/mem_pool.h"
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#include "runtime/runtime_state.h"
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#include "runtime/string_value.h"
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#include "runtime/tuple.h"
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#include "text_converter.h"
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#include "util/string_parser.hpp"
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namespace palo {
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TextConverter::TextConverter(char escape_char)
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: _escape_char(escape_char) {
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}
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void TextConverter::unescape_string(StringValue* value, MemPool* pool) {
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char* new_data = reinterpret_cast<char*>(pool->allocate(value->len));
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unescape_string(value->ptr, new_data, &value->len);
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value->ptr = new_data;
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}
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void TextConverter::unescape_string(const char* src, char* dest, int* len) {
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char* dest_ptr = dest;
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const char* end = src + *len;
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bool escape_next_char = false;
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while (src < end) {
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if (*src == _escape_char) {
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escape_next_char = !escape_next_char;
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} else {
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escape_next_char = false;
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}
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if (escape_next_char) {
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++src;
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} else {
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*dest_ptr++ = *src++;
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}
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}
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char* dest_start = reinterpret_cast<char*>(dest);
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*len = dest_ptr - dest_start;
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}
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}
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