boost iostreams 压缩文件

#include<iostream>#include <vector>#include <iostream>#include <fstream>#include <string>#include <boost/range/iterator_range.hpp>#include <boost/algorithm/string.hpp>#include <boost/lexical_cast.hpp>#include <boost/iostreams/stream.hpp>#include <boost/iostreams/filtering_stream.hpp>#include <boost/iostreams/filter/zlib.hpp>#include <boost/iostreams/device/back_inserter.hpp>#include <boost/iostreams/device/array.hpp>#include <boost/iostreams/copy.hpp>#include <boost/iostreams/filter/zlib.hpp>#include <boost/iostreams/filtering_streambuf.hpp>#include <boost/iostreams/filter/zlib.hpp>using namespace boost;using namespace std;bool compress(){        std::vector<char> content;        std::ifstream file;        file.open("/home/jk/hello",std::ios::binary);        file.seekg(0, std::ios::end);        size_t size = file.tellg();        file.seekg(0);        content.resize(size);        file.read(&(content.front()), size);        file.close();         std::vector<char> compressed;        boost::iostreams::filtering_streambuf<boost::iostreams::output> compress_out;        compress_out.push(boost::iostreams::zlib_compressor());        compress_out.push(boost::iostreams::back_inserter(compressed));        boost::iostreams::copy(boost::make_iterator_range(content), compress_out);        std::ofstream save;        save.open("/home/jk/hello.zip",std::ios::binary);        save.write(&(compressed.front()), compressed.size());        save.close();        return true;}int main(){  compress();  return 0x00;}