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HexBinaryDecoder.cpp
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116 lines (92 loc) · 2.87 KB
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//
// HexBinaryDecoder.cpp
//
// $Id: //poco/1.4/Foundation/src/HexBinaryDecoder.cpp#2 $
//
// Library: Foundation
// Package: Streams
// Module: HexBinary
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//
#include "Poco/HexBinaryDecoder.h"
#include "Poco/Exception.h"
namespace Poco {
HexBinaryDecoderBuf::HexBinaryDecoderBuf(std::istream& istr):
_buf(*istr.rdbuf())
{
}
HexBinaryDecoderBuf::~HexBinaryDecoderBuf()
{
}
int HexBinaryDecoderBuf::readFromDevice()
{
int c;
int n;
if ((n = readOne()) == -1) return -1;
if (n >= '0' && n <= '9')
c = n - '0';
else if (n >= 'A' && n <= 'F')
c = n - 'A' + 10;
else if (n >= 'a' && n <= 'f')
c = n - 'a' + 10;
else throw DataFormatException();
c <<= 4;
if ((n = readOne()) == -1) throw DataFormatException();
if (n >= '0' && n <= '9')
c |= n - '0';
else if (n >= 'A' && n <= 'F')
c |= n - 'A' + 10;
else if (n >= 'a' && n <= 'f')
c |= n - 'a' + 10;
else throw DataFormatException();
return c;
}
int HexBinaryDecoderBuf::readOne()
{
int ch = _buf.sbumpc();
while (ch == ' ' || ch == '\r' || ch == '\t' || ch == '\n')
ch = _buf.sbumpc();
return ch;
}
HexBinaryDecoderIOS::HexBinaryDecoderIOS(std::istream& istr): _buf(istr)
{
poco_ios_init(&_buf);
}
HexBinaryDecoderIOS::~HexBinaryDecoderIOS()
{
}
HexBinaryDecoderBuf* HexBinaryDecoderIOS::rdbuf()
{
return &_buf;
}
HexBinaryDecoder::HexBinaryDecoder(std::istream& istr): HexBinaryDecoderIOS(istr), std::istream(&_buf)
{
}
HexBinaryDecoder::~HexBinaryDecoder()
{
}
} // namespace Poco