84 lines
1.6 KiB
C
84 lines
1.6 KiB
C
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#pragma once
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#include "ArchiveHelper.h"
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#ifdef USE_7Z
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class CArchiveIO: public IOutStream, public IInStream, public CMyUnknownImp
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{
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public:
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MY_UNKNOWN_IMP2(IOutStream, IInStream)
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CArchiveIO(QIODevice* pFile, QIODevice::OpenMode Mode, bool bDelete = true)
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{
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Q_ASSERT(pFile);
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m_pFile = pFile;
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if(Mode != QIODevice::NotOpen)
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m_pFile->open(Mode);
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m_bDelete = bDelete;
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}
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~CArchiveIO()
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{
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m_pFile->close();
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if(m_bDelete)
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delete m_pFile;
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}
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bool Open(QIODevice::OpenMode Mode) {
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return m_pFile->open(Mode);
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}
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STDMETHOD(Read)(void *data, UInt32 size, UInt32 *processedSize)
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{
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quint64 read = m_pFile->read((char*)data, size);
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if(read == -1)
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return E_FAIL;
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if(processedSize)
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*processedSize = read;
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return S_OK;
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}
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STDMETHOD(Write)(const void *data, UInt32 size, UInt32 *processedSize)
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{
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quint64 writen = m_pFile->write((const char*)data, size);
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if(writen == -1)
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return E_FAIL;
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if(processedSize)
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*processedSize = writen;
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return S_OK;
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}
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STDMETHOD(Seek)(Int64 offset, UInt32 seekOrigin, UInt64 *newPosition)
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{
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switch(seekOrigin)
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{
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case 0: break; // FILE_BEGIN
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case 1: offset += m_pFile->pos(); break; // FILE_CURRENT
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case 2: offset += m_pFile->size(); break; // FILE_END
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default: Q_ASSERT(0); return E_FAIL;
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}
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if(!m_pFile->seek(offset))
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return E_FAIL;
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if(newPosition)
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*newPosition = offset;
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return S_OK;
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}
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STDMETHOD(SetSize)(UInt64 newSize)
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{
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return S_OK;
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}
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STDMETHOD(GetSize)(UInt64 *size)
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{
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*size = m_pFile->size();
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return S_OK;
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}
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protected:
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QIODevice* m_pFile;
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bool m_bDelete;
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};
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#endif
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