1/*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16#ifndef OHOS_ABILITY_BASE_FILE_MAPPER_H
17#define OHOS_ABILITY_BASE_FILE_MAPPER_H
18
19#include <memory>
20#include <string>
21
22namespace panda {
23namespace ecmascript {
24class ZipFileReader;
25enum class FileMapperType {
26    NORMAL_MEM,
27    SHARED_MMAP,
28    SAFE_ABC
29};
30class FileMapper {
31public:
32    FileMapper();
33    FileMapper(FileMapper &) = delete;
34    void operator=(FileMapper &) = delete;
35    ~FileMapper();
36
37    bool CreateFileMapper(const std::string &fileName, bool compress,
38        int32_t fd, size_t offset, size_t len, FileMapperType type);
39
40    bool CreateFileMapper(std::shared_ptr<ZipFileReader> fileReader, const std::string &fileName,
41        size_t offset, size_t len, bool compress);
42
43    bool IsCompressed();
44    uint8_t* GetDataPtr();
45    size_t GetDataLen();
46    std::string GetFileName();
47    int32_t GetOffset();
48private:
49    std::string fileName_;
50    bool isCompressed = false;
51
52    std::unique_ptr<uint8_t[]> dataPtr_ = nullptr;
53    size_t dataLen_ = 0;
54    size_t offset_ = 0;
55
56    uint8_t* basePtr_ = nullptr;
57    uint8_t* usePtr_ = nullptr;
58    size_t baseLen_ = 0;
59    FileMapperType type_ = FileMapperType::NORMAL_MEM;
60};
61}  // namespace AbilityBase
62}  // namespace OHOS
63#endif  // OHOS_ABILITY_BASE_FILE_MAPPER_H