c++ - boost gzip_compressor 和 gzip_decompressor

Question

我正在使用 boost 的 gzip_compressor 和“gzip_decompressor”来压缩一些字符串。 我正在像这样压缩字符串

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，但我无法解压它。这是我的代码

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

我做错了什么？

提前致谢!

Answer 1

我找到了解决这个问题的方法。这是工作代码。

压缩部分

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);
}

解压部分

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);
}