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