class Poco::DeflatingIOS

Overview

The base class for DeflatingOutputStream and DeflatingInputStream. More…

#include <DeflatingStream.h>

class DeflatingIOS: public ios
{
public:
    // construction

    DeflatingIOS(
        std::ostream& ostr,
        DeflatingStreamBuf::StreamType type = DeflatingStreamBuf::STREAM_ZLIB,
        int level = Z_DEFAULT_COMPRESSION
        );

    DeflatingIOS(
        std::ostream& ostr,
        int windowBits,
        int level
        );

    DeflatingIOS(
        std::istream& istr,
        DeflatingStreamBuf::StreamType type = DeflatingStreamBuf::STREAM_ZLIB,
        int level = Z_DEFAULT_COMPRESSION
        );

    DeflatingIOS(
        std::istream& istr,
        int windowBits,
        int level
        );

    // methods

    DeflatingStreamBuf*
    rdbuf();

protected:
    // fields

    DeflatingStreamBuf _buf;
};

// direct descendants

class DeflatingInputStream;
class DeflatingOutputStream;

Detailed Documentation

The base class for DeflatingOutputStream and DeflatingInputStream.

This class is needed to ensure the correct initialization order of the stream buffer and base classes.

Construction

DeflatingIOS(
    std::ostream& ostr,
    DeflatingStreamBuf::StreamType type = DeflatingStreamBuf::STREAM_ZLIB,
    int level = Z_DEFAULT_COMPRESSION
    )

Creates a DeflatingIOS for compressing data passed through and forwarding it to the given output stream.

DeflatingIOS(
    std::ostream& ostr,
    int windowBits,
    int level
    )

Creates a DeflatingIOS for compressing data passed through and forwarding it to the given output stream.

Please refer to the zlib documentation of deflateInit2() for a description of the windowBits parameter.

DeflatingIOS(
    std::istream& istr,
    DeflatingStreamBuf::StreamType type = DeflatingStreamBuf::STREAM_ZLIB,
    int level = Z_DEFAULT_COMPRESSION
    )

Creates a DeflatingIOS for compressing data read from the given input stream.

DeflatingIOS(
    std::istream& istr,
    int windowBits,
    int level
    )

Creates a DeflatingIOS for compressing data read from the given input stream.

Please refer to the zlib documentation of deflateInit2() for a description of the windowBits parameter.

Methods

DeflatingStreamBuf*
rdbuf()

Returns a pointer to the underlying stream buffer.