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 #include "zip_file_reader.h" 17 18 #include <atomic> 19 #include <chrono> 20 #include <climits> 21 #include <memory> 22 #include <sys/stat.h> 23 24 #include "zip_file_reader_io.h" 25 #include "zip_file_reader_mem.h" 26 27 namespace panda { 28 namespace ecmascript { 29 constexpr size_t MEM_MAX_FILE_SIZE = 1u; 30 CreateZipFileReader(const std::string & filePath)31std::shared_ptr<ZipFileReader> ZipFileReader::CreateZipFileReader(const std::string &filePath) 32 { 33 size_t fileSize = GetFileLen(filePath); 34 if (fileSize == 0) { 35 return nullptr; 36 } 37 38 std::shared_ptr<ZipFileReader> result; 39 if (fileSize <= MEM_MAX_FILE_SIZE) { 40 result = std::make_shared<ZipFileReaderMem>(filePath); 41 } else { 42 result = std::make_shared<ZipFileReaderIo>(filePath); 43 } 44 45 result->fileLen_ = fileSize; 46 if (result->init()) { 47 return result; 48 } 49 return nullptr; 50 } 51 ~ZipFileReader()52ZipFileReader::~ZipFileReader() 53 { 54 if (fd_ >= 0 && closable_) { 55 close(fd_); 56 fd_ = -1; 57 } 58 } 59 GetFileLen(const std::string & filePath)60size_t ZipFileReader::GetFileLen(const std::string &filePath) 61 { 62 if (filePath.empty()) { 63 return 0; 64 } 65 66 struct stat fileStat{}; 67 if (stat(filePath.c_str(), &fileStat) == 0) { 68 return fileStat.st_size; 69 } 70 71 return 0; 72 } 73 init()74bool ZipFileReader::init() 75 { 76 if (filePath_.empty()) { 77 return false; 78 } 79 fd_ = open(filePath_.c_str(), O_RDONLY); 80 if (fd_ < 0) { 81 return false; 82 } 83 84 return true; 85 } 86 } 87 }