zipfl.h

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#ifndef zipfl_h
#define zipfl_h

//#//////////////////////////////////////////////
// Obsolete note (RS 2014/01/29): You can only load .gz files of uncompressed size <2GB. If you load some other format (like .bz2 or rar) there is no such limitation.
class TZipIn : public TSIn {
public:
  static TStr SevenZipPath;
private:
  static TStrStrH FExtToCmdH;
  static const int MxBfL;
  #ifdef GLib_WIN
    HANDLE ZipStdoutRd, ZipStdoutWr;
  #else 
    FILE* ZipStdoutRd, *ZipStdoutWr;
  #endif
  uint64 FLen, CurFPos;
  char* Bf;
  int BfC, BfL;
private:
  void FillBf();
  int FindEol(int& BfN);
  void CreateZipProcess(const TStr& Cmd, const TStr& ZipFNm);
  static void FillFExtToCmdH();
private:
  TZipIn();
  TZipIn(const TZipIn&);
  TZipIn& operator=(const TZipIn&);
public:
  TZipIn(const TStr& FNm);
  TZipIn(const TStr& FNm, bool& OpenedP);
  static PSIn New(const TStr& FNm);
  static PSIn New(const TStr& FNm, bool& OpenedP);
  ~TZipIn();

  bool Eof() { return CurFPos==FLen && BfC==BfL; }
  int Len() const { return int(FLen-CurFPos+BfL-BfC); }
  char GetCh() { if (BfC==BfL){FillBf();} return Bf[BfC++]; }
  char PeekCh() { if (BfC==BfL){FillBf();} return Bf[BfC]; }
  int GetBf(const void* LBf, const TSize& LBfL);
  bool GetNextLnBf(TChA& LnChA);

  uint64 GetFLen() const { return FLen; }
  uint64 GetCurFPos() const { return CurFPos; }

  static bool IsZipFNm(const TStr& FNm) { return IsZipExt(FNm.GetFExt()); }
  static bool IsZipExt(const TStr& FNmExt);
  static TStr GetCmd(const TStr& ZipFNm);
  static uint64 GetFLen(const TStr& ZipFNm);
  static PSIn NewIfZip(const TStr& FNm) { return IsZipFNm(FNm) ? New(FNm) : TFIn::New(FNm); }
};

//#//////////////////////////////////////////////
class TZipOut : public TSOut{
private:
  static const TSize MxBfL;
  static TStrStrH FExtToCmdH;
  #ifdef GLib_WIN
    HANDLE ZipStdinRd, ZipStdinWr;
  #else 
    FILE *ZipStdinRd, *ZipStdinWr;
  #endif
  char* Bf;
  TSize BfL;
private:
  void FlushBf();
  void CreateZipProcess(const TStr& Cmd, const TStr& ZipFNm);
  static void FillFExtToCmdH();
private:
  TZipOut();
  TZipOut(const TZipOut&);
  TZipOut& operator=(const TZipOut&);
public:
  TZipOut(const TStr& _FNm);
  static PSOut New(const TStr& FNm);
  ~TZipOut();

  int PutCh(const char& Ch);
  int PutBf(const void* LBf, const TSize& LBfL);
  void Flush();

  static bool IsZipFNm(const TStr& FNm) { return IsZipExt(FNm.GetFExt()); }
  static bool IsZipExt(const TStr& FNmExt);
  static TStr GetCmd(const TStr& ZipFNm);
  static PSOut NewIfZip(const TStr& FNm) { return IsZipFNm(FNm) ? New(FNm) : TFOut::New(FNm); }
};

#endif