#include#include #include #include #include #include #include #include #include using namespace boost::filesystem; int main(int argc, const char* argv[]) { // Open the ZIP archive std::ifstream archive("arch.zip", std::ios_base::in | std::ios_base::binary); if (!archive) { std::cerr << "Error: Unable to open archive file." << std::endl; return 1; } // Open a filtering stream to decompress and read the file from the ZIP archive boost::iostreams::filtering_istream in; in.push(boost::iostreams::gzip_decompressor()); in.push(boost::iostreams::file_descriptor_source(archive.native_handle(), boost::iostreams::never_close_handle)); in.exceptions(std::ios_base::badbit | std::ios_base::failbit); // Read the file content from the filtering stream std::string fileContent; std::ostringstream ss; ss << in.rdbuf(); fileContent = ss.str(); // Print the file content to the console std::cout << "File content: " << std::endl << fileContent << std::endl; // Close the archive and the filtering stream archive.close(); return 0; }
#includeThis example shows how to read a file from a TAR archive using C++ Archive Read library. It uses Boost Serialization to read the file from the archive and output the file content to the console.#include #include #include using namespace boost::filesystem; int main(int argc, const char* argv[]) { // Open the TAR archive std::ifstream archive("arch.tar", std::ios_base::in | std::ios_base::binary); if (!archive) { std::cerr << "Error: Unable to open archive file." << std::endl; return 1; } // Open a archive input stream to read files from the TAR archive boost::archive::tar_iarchive in(archive); // Read a file from the archive std::string fileName = "file.txt"; std::ofstream file(fileName); in >> boost::serialization::make_nvp(fileName.c_str(), file); // Close the archive and the file archive.close(); file.close(); // Print the file content to the console std::ifstream fileIn(fileName, std::ios_base::in | std::ios_base::binary); if (fileIn) { std::string content((std::istreambuf_iterator (fileIn)), std::istreambuf_iterator ()); std::cout << "File content: " << std::endl << content << std::endl; } return 0; }