提升gzip_compressor和gzip_decompressor

Question

我正在使用boost的gzip_compressor和'gzip_decompressor'來壓縮某些字符串。 我正在像這樣壓縮字符串

string compressedString;
{
    filtering_ostream out;
    out.push(gzip_compressor(gzip_params(gzip::best_compression)));
    out.push(boost::iostreams::back_inserter(compressedString));
    out.write(stringToBeCompressed.c_str(), stringToBeCompressed.size());
}

它工作正常，但我無法解壓縮。 這是我的代碼

std::string decompressedString;
{
    filtering_ostream out;
    out.push(gzip_decompressor());
    out.push(boost::iostreams::back_inserter(decompressedString));
    out.write(compressedString.c_str(), compressedString.size());
}

我究竟做錯了什么？

先感謝您！

Answer 1

我找到了解決此問題的方法。 這是工作代碼。

壓縮部分

std::string compressedString;
{
    filtering_ostream compressingStream;
    compressingStream.push(boost::iostreams::gzip_compressor(gzip_params(gzip::best_compression)));
    compressingStream.push(boost::iostreams::back_inserter(compressedString));
    compressingStream << stringToBeCompressed;
    boost::iostreams::close(compressingStream);
}

解壓部分

std::string decompressedString;
{
    boost::iostreams::filtering_ostream decompressingStream;
    decompressingStream.push(boost::iostreams::gzip_decompressor());
    decompressingStream.push(boost::iostreams::back_inserter(decompressedString));
    decompressingStream << stringToBeDecompressed;
    boost::iostreams::close(decompressingStream);
}