1 /* 2 * Copyright (c) 2025 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_FILE_FS_STREAM_IMPL_H 17 #define OHOS_FILE_FS_STREAM_IMPL_H 18 19 #include "ffi_remote_data.h" 20 #include "cj_common_ffi.h" 21 #include "macro.h" 22 #include "uni_error.h" 23 24 namespace OHOS { 25 namespace CJSystemapi { 26 namespace FileFs { 27 28 std::tuple<int, std::unique_ptr<char[]>, size_t, int64_t> GetReadArg(size_t bufLen, int64_t length, int64_t offset); 29 30 class StreamImpl : public OHOS::FFI::FFIData { 31 public: StreamImpl(std::unique_ptr<FILE,decltype (& fclose)> fp)32 explicit StreamImpl(std::unique_ptr<FILE, decltype(&fclose)> fp) : fp_(std::move(fp)) {} 33 34 int Close(); 35 36 int Flush(); 37 38 std::tuple<int, int64_t> ReadCur(uint8_t* buffer, size_t buLen, int64_t length); 39 40 std::tuple<int, int64_t> Read(uint8_t* buffer, size_t buLen, int64_t length, int64_t offset); 41 42 std::tuple<int, int64_t> WriteCur(void* buffer, int64_t length, const std::string& encode); 43 44 std::tuple<int, int64_t> Write(void* buffer, int64_t length, int64_t offset, const std::string& encode); 45 GetRuntimeType()46 OHOS::FFI::RuntimeType* GetRuntimeType() override { return GetClassType(); } 47 GetRealFp()48 std::unique_ptr<FILE, decltype(&fclose)> GetRealFp() { return std::move(fp_); } 49 50 private: 51 std::unique_ptr<FILE, decltype(&fclose)> fp_; 52 53 friend class OHOS::FFI::RuntimeType; 54 friend class OHOS::FFI::TypeBase; GetClassType()55 static OHOS::FFI::RuntimeType* GetClassType() 56 { 57 static OHOS::FFI::RuntimeType runtimeType = OHOS::FFI::RuntimeType::Create<OHOS::FFI::FFIData>("StreamImpl"); 58 return &runtimeType; 59 } 60 }; 61 62 } 63 } 64 } 65 #endif // OHOS_FILE_FS_STREAM_IMPL_H