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//
// HexBinaryEncoder.h
//
// Library: Foundation
// Package: Streams
// Module: HexBinary
//
// Definition of the HexBinaryEncoder class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Foundation_HexBinaryEncoder_INCLUDED
#define Foundation_HexBinaryEncoder_INCLUDED
#include "Poco/Foundation.h"
#include "Poco/UnbufferedStreamBuf.h"
#include <ostream>
namespace Poco {
class Foundation_API HexBinaryEncoderBuf: public UnbufferedStreamBuf
/// This streambuf encodes all data written
/// to it in hexBinary encoding and forwards it to a connected
/// ostream.
/// In hexBinary encoding, each binary octet is encoded as a character tuple,
/// consisting of two hexadecimal digits ([0-9a-fA-F]) representing the octet code.
/// See also: XML Schema Part 2: Datatypes (http://www.w3.org/TR/xmlschema-2/),
/// section 3.2.15.
///
/// Note: The characters are directly written
/// to the ostream's streambuf, thus bypassing
/// the ostream. The ostream's state is therefore
/// not updated to match the buffer's state.
{
public:
HexBinaryEncoderBuf(std::ostream& ostr);
~HexBinaryEncoderBuf();
int close();
/// Closes the stream buffer.
void setLineLength(int lineLength);
/// Specify the line length.
///
/// After the given number of characters have been written,
/// a newline character will be written.
///
/// Specify 0 for an unlimited line length.
int getLineLength() const;
/// Returns the currently set line length.
void setUppercase(bool flag = true);
/// Specify whether hex digits a-f are written in upper or lower case.
private:
int writeToDevice(char c);
int _pos;
int _lineLength;
int _uppercase;
std::streambuf& _buf;
};
class Foundation_API HexBinaryEncoderIOS: public virtual std::ios
/// The base class for HexBinaryEncoder.
///
/// This class is needed to ensure the correct initialization
/// order of the stream buffer and base classes.
{
public:
HexBinaryEncoderIOS(std::ostream& ostr);
~HexBinaryEncoderIOS();
int close();
HexBinaryEncoderBuf* rdbuf();
protected:
HexBinaryEncoderBuf _buf;
};
class Foundation_API HexBinaryEncoder: public HexBinaryEncoderIOS, public std::ostream
/// This ostream encodes all data
/// written to it in BinHex encoding and forwards it to
/// a connected ostream.
/// Always call close() when done
/// writing data, to ensure proper
/// completion of the encoding operation.
/// In hexBinary encoding, each binary octet is encoded as a character tuple,
/// consisting of two hexadecimal digits ([0-9a-fA-F]) representing the octet code.
/// See also: XML Schema Part 2: Datatypes (http://www.w3.org/TR/xmlschema-2/),
/// section 3.2.15.
///
/// Note: The characters are directly written
/// to the ostream's streambuf, thus bypassing
/// the ostream. The ostream's state is therefore
/// not updated to match the buffer's state.
{
public:
HexBinaryEncoder(std::ostream& ostr);
~HexBinaryEncoder();
};
} // namespace Poco
#endif // Foundation_HexBinaryEncoder_INCLUDED
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