// @(#)root/base:$Name: $:$Id: TBuffer.h,v 1.4 2000/12/12 18:22:11 rdm Exp $ // Author: Fons Rademakers 04/05/96 /************************************************************************* * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. * * All rights reserved. * * * * For the licensing terms see $ROOTSYS/LICENSE. * * For the list of contributors see $ROOTSYS/README/CREDITS. * *************************************************************************/ #ifndef ROOT_TBuffer #define ROOT_TBuffer ////////////////////////////////////////////////////////////////////////// // // // TBuffer // // // // Buffer base class used for serializing objects. // // // ////////////////////////////////////////////////////////////////////////// #ifndef ROOT_TObject #include "TObject.h" #endif #ifndef ROOT_Bytes #include "Bytes.h" #endif class TClass; class TExMap; class TBuffer : public TObject { protected: Bool_t fMode; //Read or write mode Int_t fVersion; //Buffer format version Int_t fBufSize; //Size of buffer char *fBuffer; //Buffer used to store objects char *fBufCur; //Current position in buffer char *fBufMax; //End of buffer Int_t fMapCount; //Number of objects or classes in map Int_t fMapSize; //Default size of map Int_t fDisplacement; //Value to be added to the map offsets union { TExMap *fReadMap; //Map containing id,object references during reading TExMap *fWriteMap; //Map containing object,id pairs during writing }; static Int_t fgMapSize; //Default map size for all TBuffer objects // Default ctor TBuffer() : fMode(0), fBuffer(0) { fReadMap = 0; } // TBuffer objects cannot be copied or assigned TBuffer(const TBuffer &); // not implemented void operator=(const TBuffer &); // not implemented void CheckCount(UInt_t offset); UInt_t CheckObject(UInt_t offset, const TClass *cl, Bool_t readClass = kFALSE); void Expand(Int_t newsize); //Expand buffer to newsize Int_t Read(const char *name) { return TObject::Read(name); } Int_t Write(const char *name, Int_t opt, Int_t bufs) { return TObject::Write(name, opt, bufs); } public: enum EMode { kRead = 0, kWrite = 1 }; enum { kInitialSize = 1024, kMinimalSize = 128 }; enum { kMapSize = 503 }; TBuffer(EMode mode, Int_t bufsiz = kInitialSize, void *buf = 0); virtual ~TBuffer(); void MapObject(const TObject *obj, UInt_t offset = 1); virtual void Reset() { SetBufferOffset(); ResetMap(); } void InitMap(); void ResetMap(); void SetReadMode(); void SetReadParam(Int_t mapsize); void SetWriteMode(); void SetWriteParam(Int_t mapsize); void SetBuffer(void *buf, UInt_t bufsiz = 0); void SetBufferOffset(Int_t offset = 0) { fBufCur = fBuffer+offset; } char *Buffer() const { return fBuffer; } Int_t BufferSize() const { return fBufSize; } void DetachBuffer() { fBuffer = 0; } Int_t Length() const { return (Int_t)(fBufCur - fBuffer); } Int_t CheckByteCount(UInt_t startpos, UInt_t bcnt, const TClass *clss); void SetByteCount(UInt_t cntpos, Bool_t packInVersion = kFALSE); Bool_t IsReading() const { return (fMode & kWrite) == 0; } Bool_t IsWriting() const { return (fMode & kWrite) != 0; } Int_t ReadBuf(void *buf, Int_t max); void WriteBuf(const void *buf, Int_t max); char *ReadString(char *s, Int_t max); void WriteString(const char *s); Version_t ReadVersion(UInt_t *start = 0, UInt_t *bcnt = 0); UInt_t WriteVersion(const TClass *cl, Bool_t useBcnt = kFALSE); TClass *ReadClass(const TClass *cl = 0, UInt_t *objTag = 0); void WriteClass(const TClass *cl); TObject *ReadObject(const TClass *cl); void WriteObject(const TObject *obj); void SetBufferDisplacement(Int_t skipped) { fDisplacement = (Int_t)(Length() - skipped); } void SetBufferDisplacement() { fDisplacement = 0; } Int_t GetBufferDisplacement() { return fDisplacement; } Int_t ReadArray(Char_t *&c); Int_t ReadArray(UChar_t *&c); Int_t ReadArray(Short_t *&h); Int_t ReadArray(UShort_t *&h); Int_t ReadArray(Int_t *&i); Int_t ReadArray(UInt_t *&i); Int_t ReadArray(Long_t *&l); Int_t ReadArray(ULong_t *&l); Int_t ReadArray(Float_t *&f); Int_t ReadArray(Double_t *&d); Int_t ReadStaticArray(Char_t *c); Int_t ReadStaticArray(UChar_t *c); Int_t ReadStaticArray(Short_t *h); Int_t ReadStaticArray(UShort_t *h); Int_t ReadStaticArray(Int_t *i); Int_t ReadStaticArray(UInt_t *i); Int_t ReadStaticArray(Long_t *l); Int_t ReadStaticArray(ULong_t *l); Int_t ReadStaticArray(Float_t *f); Int_t ReadStaticArray(Double_t *d); void WriteArray(const Char_t *c, Int_t n); void WriteArray(const UChar_t *c, Int_t n); void WriteArray(const Short_t *h, Int_t n); void WriteArray(const UShort_t *h, Int_t n); void WriteArray(const Int_t *i, Int_t n); void WriteArray(const UInt_t *i, Int_t n); void WriteArray(const Long_t *l, Int_t n); void WriteArray(const ULong_t *l, Int_t n); void WriteArray(const Float_t *f, Int_t n); void WriteArray(const Double_t *d, Int_t n); void ReadFastArray(Char_t *c, Int_t n); void ReadFastArray(UChar_t *c, Int_t n); void ReadFastArray(Short_t *h, Int_t n); void ReadFastArray(UShort_t *h, Int_t n); void ReadFastArray(Int_t *i, Int_t n); void ReadFastArray(UInt_t *i, Int_t n); void ReadFastArray(Long_t *l, Int_t n); void ReadFastArray(ULong_t *l, Int_t n); void ReadFastArray(Float_t *f, Int_t n); void ReadFastArray(Double_t *d, Int_t n); void WriteFastArray(const Char_t *c, Int_t n); void WriteFastArray(const UChar_t *c, Int_t n); void WriteFastArray(const Short_t *h, Int_t n); void WriteFastArray(const UShort_t *h, Int_t n); void WriteFastArray(const Int_t *i, Int_t n); void WriteFastArray(const UInt_t *i, Int_t n); void WriteFastArray(const Long_t *l, Int_t n); void WriteFastArray(const ULong_t *l, Int_t n); void WriteFastArray(const Float_t *f, Int_t n); void WriteFastArray(const Double_t *d, Int_t n); TBuffer &operator>>(Char_t &c); TBuffer &operator>>(UChar_t &c); TBuffer &operator>>(Short_t &h); TBuffer &operator>>(UShort_t &h); TBuffer &operator>>(Int_t &i); TBuffer &operator>>(UInt_t &i); TBuffer &operator>>(Long_t &l); TBuffer &operator>>(ULong_t &l); TBuffer &operator>>(Float_t &f); TBuffer &operator>>(Double_t &d); TBuffer &operator>>(Char_t *c); TBuffer &operator<<(Char_t c); TBuffer &operator<<(UChar_t c); TBuffer &operator<<(Short_t h); TBuffer &operator<<(UShort_t h); TBuffer &operator<<(Int_t i); TBuffer &operator<<(UInt_t i); TBuffer &operator<<(Long_t l); TBuffer &operator<<(ULong_t l); TBuffer &operator<<(Float_t f); TBuffer &operator<<(Double_t d); TBuffer &operator<<(const Char_t *c); //friend TBuffer &operator>>(TBuffer &b, TObject *&obj); friend TBuffer &operator>>(TBuffer &b, const TObject *&obj); friend TBuffer &operator<<(TBuffer &b, const TObject *obj); static void SetGlobalReadParam(Int_t mapsize); static void SetGlobalWriteParam(Int_t mapsize); static Int_t GetGlobalReadParam(); static Int_t GetGlobalWriteParam(); ClassDef(TBuffer,0) //Buffer base class used for serializing objects }; //---------------------- TBuffer inlines --------------------------------------- //______________________________________________________________________________ inline TBuffer &TBuffer::operator<<(Char_t c) { if (fBufCur + sizeof(Char_t) > fBufMax) Expand(2*fBufSize); tobuf(fBufCur, c); return *this; } //______________________________________________________________________________ inline TBuffer &TBuffer::operator<<(Short_t h) { if (fBufCur + sizeof(Short_t) > fBufMax) Expand(2*fBufSize); tobuf(fBufCur, h); return *this; } //______________________________________________________________________________ inline TBuffer &TBuffer::operator<<(Int_t i) { if (fBufCur + sizeof(Int_t) > fBufMax) Expand(2*fBufSize); tobuf(fBufCur, i); return *this; } //______________________________________________________________________________ inline TBuffer &TBuffer::operator<<(Long_t l) { if (fBufCur + sizeof(Long_t) > fBufMax) Expand(2*fBufSize); tobuf(fBufCur, l); return *this; } //______________________________________________________________________________ inline TBuffer &TBuffer::operator<<(Float_t f) { if (fBufCur + sizeof(Float_t) > fBufMax) Expand(2*fBufSize); tobuf(fBufCur, f); return *this; } //______________________________________________________________________________ inline TBuffer &TBuffer::operator<<(Double_t d) { if (fBufCur + sizeof(Double_t) > fBufMax) Expand(2*fBufSize); tobuf(fBufCur, d); return *this; } //______________________________________________________________________________ inline TBuffer &TBuffer::operator<<(const Char_t *c) { WriteString(c); return *this; } //______________________________________________________________________________ inline TBuffer &TBuffer::operator>>(Char_t &c) { frombuf(fBufCur, &c); return *this; } //______________________________________________________________________________ inline TBuffer &TBuffer::operator>>(Short_t &h) { frombuf(fBufCur, &h); return *this; } //______________________________________________________________________________ inline TBuffer &TBuffer::operator>>(Int_t &i) { frombuf(fBufCur, &i); return *this; } //______________________________________________________________________________ inline TBuffer &TBuffer::operator>>(Long_t &l) { frombuf(fBufCur, &l); return *this; } //______________________________________________________________________________ inline TBuffer &TBuffer::operator>>(Float_t &f) { frombuf(fBufCur, &f); return *this; } //______________________________________________________________________________ inline TBuffer &TBuffer::operator>>(Double_t &d) { frombuf(fBufCur, &d); return *this; } //______________________________________________________________________________ inline TBuffer &TBuffer::operator>>(Char_t *c) { ReadString(c, -1); return *this; } //______________________________________________________________________________ inline TBuffer &TBuffer::operator<<(UChar_t c) { return TBuffer::operator<<((Char_t)c); } //______________________________________________________________________________ inline TBuffer &TBuffer::operator<<(UShort_t h) { return TBuffer::operator<<((Short_t)h); } //______________________________________________________________________________ inline TBuffer &TBuffer::operator<<(UInt_t i) { return TBuffer::operator<<((Int_t)i); } //______________________________________________________________________________ inline TBuffer &TBuffer::operator<<(ULong_t l) { return TBuffer::operator<<((Long_t)l); } //______________________________________________________________________________ inline TBuffer &TBuffer::operator>>(UChar_t &c) { return TBuffer::operator>>((Char_t&)c); } //______________________________________________________________________________ inline TBuffer &TBuffer::operator>>(UShort_t &h) { return TBuffer::operator>>((Short_t&)h); } //______________________________________________________________________________ inline TBuffer &TBuffer::operator>>(UInt_t &i) { return TBuffer::operator>>((Int_t&)i); } //______________________________________________________________________________ inline TBuffer &TBuffer::operator>>(ULong_t &l) { return TBuffer::operator>>((Long_t&)l); } //______________________________________________________________________________ inline TBuffer &operator<<(TBuffer &buf, const TObject *obj) { buf.WriteObject(obj); return buf; } //______________________________________________________________________________ //inline TBuffer &operator>>(TBuffer &buf, TObject *&obj) // { obj = buf.ReadObject(0); return buf; } //______________________________________________________________________________ inline TBuffer &operator>>(TBuffer &buf, const TObject *&obj) { obj = buf.ReadObject(0); return buf; } //______________________________________________________________________________ inline Int_t TBuffer::ReadArray(UChar_t *&c) { return TBuffer::ReadArray((Char_t *&)c); } //______________________________________________________________________________ inline Int_t TBuffer::ReadArray(UShort_t *&h) { return TBuffer::ReadArray((Short_t *&)h); } //______________________________________________________________________________ inline Int_t TBuffer::ReadArray(UInt_t *&i) { return TBuffer::ReadArray((Int_t *&)i); } //______________________________________________________________________________ inline Int_t TBuffer::ReadArray(ULong_t *&l) { return TBuffer::ReadArray((Long_t *&)l); } //______________________________________________________________________________ inline Int_t TBuffer::ReadStaticArray(UChar_t *c) { return TBuffer::ReadStaticArray((Char_t *)c); } //______________________________________________________________________________ inline Int_t TBuffer::ReadStaticArray(UShort_t *h) { return TBuffer::ReadStaticArray((Short_t *)h); } //______________________________________________________________________________ inline Int_t TBuffer::ReadStaticArray(UInt_t *i) { return TBuffer::ReadStaticArray((Int_t *)i); } //______________________________________________________________________________ inline Int_t TBuffer::ReadStaticArray(ULong_t *l) { return TBuffer::ReadStaticArray((Long_t *)l); } //______________________________________________________________________________ inline void TBuffer::ReadFastArray(UChar_t *c, Int_t n) { TBuffer::ReadFastArray((Char_t *)c, n); } //______________________________________________________________________________ inline void TBuffer::ReadFastArray(UShort_t *h, Int_t n) { TBuffer::ReadFastArray((Short_t *)h, n); } //______________________________________________________________________________ inline void TBuffer::ReadFastArray(UInt_t *i, Int_t n) { TBuffer::ReadFastArray((Int_t *)i, n); } //______________________________________________________________________________ inline void TBuffer::ReadFastArray(ULong_t *l, Int_t n) { TBuffer::ReadFastArray((Long_t *)l, n); } //______________________________________________________________________________ inline void TBuffer::WriteArray(const UChar_t *c, Int_t n) { TBuffer::WriteArray((const Char_t *)c, n); } //______________________________________________________________________________ inline void TBuffer::WriteArray(const UShort_t *h, Int_t n) { TBuffer::WriteArray((const Short_t *)h, n); } //______________________________________________________________________________ inline void TBuffer::WriteArray(const UInt_t *i, Int_t n) { TBuffer::WriteArray((const Int_t *)i, n); } //______________________________________________________________________________ inline void TBuffer::WriteArray(const ULong_t *l, Int_t n) { TBuffer::WriteArray((const Long_t *)l, n); } //______________________________________________________________________________ inline void TBuffer::WriteFastArray(const UChar_t *c, Int_t n) { TBuffer::WriteFastArray((const Char_t *)c, n); } //______________________________________________________________________________ inline void TBuffer::WriteFastArray(const UShort_t *h, Int_t n) { TBuffer::WriteFastArray((const Short_t *)h, n); } //______________________________________________________________________________ inline void TBuffer::WriteFastArray(const UInt_t *i, Int_t n) { TBuffer::WriteFastArray((const Int_t *)i, n); } //______________________________________________________________________________ inline void TBuffer::WriteFastArray(const ULong_t *l, Int_t n) { TBuffer::WriteFastArray((const Long_t *)l, n); } #endif