Poco

class DeflatingIOS

Library: Foundation
Package: Streams
Header: Poco/DeflatingStream.h

Description

The base class for DeflatingOutputStream and DeflatingInputStream.

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

Inheritance

Direct Base Classes: std::ios

All Base Classes: std::ios

Known Derived Classes: DeflatingInputStream, DeflatingOutputStream

Member Summary

Member Functions: rdbuf

Constructors

DeflatingIOS

DeflatingIOS(
    std::ostream & ostr,
    DeflatingStreamBuf::StreamType type = DeflatingStreamBuf::STREAM_ZLIB,
    int level = (- 1)
);

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

DeflatingIOS

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

DeflatingIOS(
    std::istream & istr,
    DeflatingStreamBuf::StreamType type = DeflatingStreamBuf::STREAM_ZLIB,
    int level = (- 1)
);

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

DeflatingIOS

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.

Destructor

~DeflatingIOS

~DeflatingIOS();

Destroys the DeflatingIOS.

Member Functions

rdbuf

DeflatingStreamBuf * rdbuf();

Returns a pointer to the underlying stream buffer.

Variables

_buf protected

DeflatingStreamBuf _buf;