1 /* 2 * Copyright (c) 2024-2024 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 SIGNATRUETOOLS_ZIP_DATA_INPUT_H 17 #define SIGNATRUETOOLS_ZIP_DATA_INPUT_H 18 19 #include <memory> 20 21 #include "byte_buffer.h" 22 #include "data_source.h" 23 #include "random_access_file_output.h" 24 25 namespace OHOS { 26 namespace SignatureTools { 27 28 class ZipDataInput { 29 public: ~ZipDataInput()30 virtual ~ZipDataInput() 31 { 32 } 33 34 /** 35 * Get how many bytes are contained in this data input. 36 * 37 * @return this data input size 38 */ 39 virtual int64_t Size() = 0; 40 41 /** 42 * Copy the specified data block into the destination ZipDataOutput 43 * 44 * @param offset offset index at the ZipDataInput 45 * @param size size of the data block 46 * @param buffer the destination ZipDataOutput 47 * @throws IOException when IO error occurred 48 */ 49 virtual bool CopyTo(int64_t offset, int size, ByteBuffer& buffer) = 0; 50 51 /** 52 * Create a ByteBuffer which contain the specified data block from this ZipDataInput 53 * 54 * @param offset offset index at the ZipDataInput 55 * @param size size of the data block 56 * @return a ByteBuffer 57 * @throws IOException when IO error occurred 58 */ 59 virtual ByteBuffer CreateByteBuffer(int64_t offset, int size) = 0; 60 61 /** 62 * Create a new DataSource whose content is shared by this DataSource 63 * 64 * @param offset offset index at the DataSource 65 * @param size size of the data block 66 * @return new DataSource 67 */ 68 virtual DataSource* Slice(int64_t offset, int64_t size) = 0; 69 }; 70 } // namespace SignatureTools 71 } // namespace OHOS 72 #endif // SIGNATRUETOOLS_ZIP_DATA_INPUT_H