mirror of
https://github.com/nzbget/nzbget.git
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94 lines
2.3 KiB
C++
94 lines
2.3 KiB
C++
/*
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* This file is part of nzbget. See <http://nzbget.net>.
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*
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* Copyright (C) 2007-2017 Andrey Prygunkov <hugbug@users.sourceforge.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef DECODER_H
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#define DECODER_H
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#include "NString.h"
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#include "Util.h"
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class Decoder
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{
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public:
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enum EStatus
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{
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dsUnknownError,
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dsFinished,
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dsArticleIncomplete,
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dsCrcError,
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dsInvalidSize,
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dsNoBinaryData
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};
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enum EFormat
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{
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efUnknown,
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efYenc,
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efUx,
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};
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Decoder();
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EStatus Check();
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void Clear();
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int DecodeBuffer(char* buffer, int len);
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void SetCrcCheck(bool crcCheck) { m_crcCheck = crcCheck; }
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void SetRawMode(bool rawMode) { m_rawMode = rawMode; }
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EFormat GetFormat() { return m_format; }
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int64 GetBeginPos() { return m_beginPos; }
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int64 GetEndPos() { return m_endPos; }
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int64 GetSize() { return m_size; }
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uint32 GetExpectedCrc() { return m_expectedCRC; }
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uint32 GetCalculatedCrc() { return m_calculatedCRC; }
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bool GetEof() { return m_eof; }
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const char* GetArticleFilename() { return m_articleFilename; }
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private:
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EFormat m_format = efUnknown;
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bool m_begin;
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bool m_part;
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bool m_body;
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bool m_end;
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bool m_crc;
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uint32 m_expectedCRC;
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uint32 m_calculatedCRC;
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int64 m_beginPos;
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int64 m_endPos;
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int64 m_size;
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int64 m_endSize;
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int64 m_outSize;
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bool m_eof;
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bool m_crcCheck;
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char m_state;
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bool m_rawMode = false;
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CString m_articleFilename;
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StringBuilder m_lineBuf;
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Crc32 m_crc32;
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EFormat DetectFormat(const char* buffer, int len);
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void ProcessYenc(char* buffer, int len);
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int DecodeYenc(char* buffer, char* outbuf, int len);
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EStatus CheckYenc();
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int DecodeUx(char* buffer, int len);
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EStatus CheckUx();
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void ProcessRaw(char* buffer, int len);
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};
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#endif
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