text: // ZipOut.h
  
  #ifndef __ZIP_OUT_H
  #define __ZIP_OUT_H
  
  #include "../../../Common/MyCom.h"
  
  #include "../../Common/OutBuffer.h"
  
  #include "ZipItem.h"
  
  namespace NArchive {
  namespace NZip {
  
  class CItemOut: public CItem
  {
  public:
    FILETIME Ntfs_MTime;
    FILETIME Ntfs_ATime;
    FILETIME Ntfs_CTime;
    bool NtfsTimeIsDefined;
  
    // It's possible that NtfsTime is not defined, but there is NtfsTime in Extra.
    
    CByteBuffer Name_Utf; // for Info-Zip (kIzUnicodeName) Extra
  
    size_t Get_UtfName_ExtraSize() const
    {
      const size_t size = Name_Utf.Size();
      if (size == 0)
        return 0;
      return 4 + 5 + size;
    }
  
    CItemOut(): NtfsTimeIsDefined(false) {}
  };
  
  
  // COutArchive can throw CSystemException and COutBufferException
  
  class COutArchive
  {
    COutBuffer m_OutBuffer;
    CMyComPtr<IOutStream> m_Stream;
  
    UInt64 m_Base; // Base of archive (offset in output Stream)
    UInt64 m_CurPos; // Curent position in archive (relative from m_Base)
    UInt64 m_LocalHeaderPos; // LocalHeaderPos (relative from m_Base) for last WriteLocalHeader() call
  
    UInt32 m_LocalFileHeaderSize;
    UInt32 m_ExtraSize;
    bool m_IsZip64;
  
    void WriteBytes(const void *data, size_t size);
    void Write8(Byte b);
    void Write16(UInt16 val);
    void Write32(UInt32 val);
    void Write64(UInt64 val);
    void WriteNtfsTime(const FILETIME &ft)
    {
      Write32(ft.dwLowDateTime);
      Write32(ft.dwHighDateTime);
    }
  
    void WriteUtfName(const CItemOut &item);
    void WriteExtra(const CExtraBlock &extra);
    void WriteCommonItemInfo(const CLocalItem &item, bool isZip64);
    void WriteCentralHeader(const CItemOut &item);
  
    void SeekToCurPos();
  public:
    HRESULT Create(IOutStream *outStream);
    
    UInt64 GetCurPos() const { return m_CurPos; }
  
    void MoveCurPos(UInt64 distanceToMove)
    {
      m_CurPos += distanceToMove;
    }
  
    void WriteLocalHeader(CItemOut &item, bool needCheck = false);
    void WriteLocalHeader_Replace(CItemOut &item);
  
    void WriteDescriptor(const CItemOut &item);
  
    void WriteCentralDir(const CObjectVector<CItemOut> &items, const CByteBuffer *comment);
  
    void CreateStreamForCompressing(CMyComPtr<IOutStream> &outStream);
    void CreateStreamForCopying(CMyComPtr<ISequentialOutStream> &outStream);
  };
  
  }}
  
  #endif
  