TMBlobBs Class Reference

#include <blobbs.h>

Inheritance diagram for TMBlobBs:

Collaboration diagram for TMBlobBs:

Public Member Functions
	TMBlobBs (const TStr &BlobBsFNm, const TFAccess &_Access=faRdOnly, const int &_MxSegLen=-1)
	~TMBlobBs ()
TMBlobBs &	operator= (const TMBlobBs &)
TStr	GetVersionStr () const
TBlobPt	PutBlob (const PSIn &SIn)
TBlobPt	PutBlob (const TBlobPt &BlobPt, const PSIn &SIn)
PSIn	GetBlob (const TBlobPt &BlobPt)
void	DelBlob (const TBlobPt &BlobPt)
TBlobPt	GetFirstBlobPt ()
TBlobPt	FFirstBlobPt ()
bool	FNextBlobPt (TBlobPt &TrvBlobPt, TBlobPt &BlobPt, PSIn &BlobSIn)
Public Member Functions inherited from TBlobBs
	UndefCopyAssign (TBlobBs)
	TBlobBs ()
virtual	~TBlobBs ()
	TBlobBs (TSIn &)
void	Save (TSOut &) const
void	PutVersionStr (const PFRnd &FBlobBs)
void	AssertVersionStr (const PFRnd &FBlobBs)
TStr	GetBlobBsStateStr (const TBlobBsState &BlobBsState)
int	GetStateStrLen ()
void	PutBlobBsStateStr (const PFRnd &FBlobBs, const TBlobBsState &State)
void	AssertBlobBsStateStr (const PFRnd &FBlobBs, const TBlobBsState &State)
void	PutMxSegLen (const PFRnd &FBlobBs, const int &MxSegLen)
int	GetMxSegLen (const PFRnd &FBlobBs)
void	GenBlockLenV (TIntV &BlockLenV)
void	PutBlockLenV (const PFRnd &FBlobBs, const TIntV &BlockLenV)
void	GetBlockLenV (const PFRnd &FBlobBs, TIntV &BlockLenV)
void	GenFFreeBlobPtV (const TIntV &BlockLenV, TBlobPtV &FFreeBlobPtV)
void	PutFFreeBlobPtV (const PFRnd &FBlobBs, const TBlobPtV &FFreeBlobPtV)
void	GetFFreeBlobPtV (const PFRnd &FBlobBs, TBlobPtV &FFreeBlobPtV)
void	GetAllocInfo (const int &BfL, const TIntV &BlockLenV, int &MxBfL, int &FFreeBlobPtN)
uint	GetBeginBlobTag ()
uint	GetEndBlobTag ()
void	PutBlobTag (const PFRnd &FBlobBs, const TBlobTag &BlobTag)
void	AssertBlobTag (const PFRnd &FBlobBs, const TBlobTag &BlobTag)
void	PutBlobState (const PFRnd &FBlobBs, const TBlobState &State)
TBlobState	GetBlobState (const PFRnd &FBlobBs)
void	AssertBlobState (const PFRnd &FBlobBs, const TBlobState &State)
void	AssertBfCsEqFlCs (const TCs &BfCs, const TCs &FCs)
TBlobPt	PutBlob (const TStr &Str)
bool	FNextBlobPt (TBlobPt &TrvBlobPt, PSIn &BlobSIn)

Static Public Member Functions
static PBlobBs	New (const TStr &BlobBsFNm, const TFAccess &Access=faRdOnly, const int &MxSegLen=-1)
static bool	Exists (const TStr &BlobBsFNm)
Static Public Member Functions inherited from TBlobBs
static PBlobBs	Load (TSIn &)

Private Member Functions
void	LoadMain (int &Segs)
void	SaveMain () const

Static Private Member Functions
static void	GetNrFPathFMid (const TStr &BlobBsFNm, TStr &NrFPath, TStr &NrFMid)
static TStr	GetMainFNm (const TStr &NrFPath, const TStr &NrFMid)
static TStr	GetSegFNm (const TStr &NrFPath, const TStr &NrFMid, const int &SegN)

Private Attributes
TFAccess	Access
int	MxSegLen
TStr	NrFPath
TStr	NrFMid
TBlobBsV	SegV
int	CurSegN

Additional Inherited Members
Static Public Attributes inherited from TBlobBs
static const int	MnBlobBfL =16
static const int	MxBlobFLen =1000000000
static const TStr	MxSegLenVNm ="MxSegLen"
static const TStr	BlockLenVNm ="BlockLenV"
static const TStr	FFreeBlobPtVNm ="FFreeBlobPtV"

Detailed Description

Definition at line 188 of file blobbs.h.

Constructor & Destructor Documentation

TMBlobBs::TMBlobBs	(	const TStr &	BlobBsFNm,
		const TFAccess &	_Access = faRdOnly,
		const int &	_MxSegLen = -1
	)

Definition at line 449 of file blobbs.cpp.

References Access, TVec< TVal, TSizeTy >::Add(), TFile::DelWc(), TFile::Exists(), faCreate, Fail, faRdOnly, faRestore, faUpdate, forever, GetMainFNm(), GetNrFPathFMid(), GetSegFNm(), LoadMain(), TBlobBs::MxBlobFLen, MxSegLen, TGBlobBs::New(), NrFMid, NrFPath, SaveMain(), and SegV.

Referenced by New().

                                                                      :
  TBlobBs(), Access(_Access), MxSegLen(_MxSegLen),
  NrFPath(), NrFMid(), SegV(), CurSegN(0){
  if (MxSegLen==-1){MxSegLen=MxBlobFLen;}
  GetNrFPathFMid(BlobBsFNm, NrFPath, NrFMid);
  switch (Access){
    case faCreate:{
      TFile::DelWc(BlobBsFNm+".*");
      TStr SegFNm=GetSegFNm(NrFPath, NrFMid, 0);
      PBlobBs Seg=TGBlobBs::New(SegFNm, faCreate, MxSegLen);
      SegV.Add(Seg);
      SaveMain(); break;}
    case faUpdate:
    case faRdOnly:{
      int Segs; LoadMain(Segs);
      for (int SegN=0; SegN<Segs; SegN++){
        TStr SegFNm=GetSegFNm(NrFPath, NrFMid, SegN);
        SegV.Add(TGBlobBs::New(SegFNm, Access, MxSegLen));
      }
      break;}
    case faRestore:{
      // assume no segments
      int Segs=-1;
      // if main-file exists
      if (TFile::Exists(GetMainFNm(NrFPath, NrFMid))){
        // load main file
        int _Segs; LoadMain(_Segs);
        // load segment-files which exist
        Segs=0;
        forever {
          // get segment file-name
          TStr SegFNm=GetSegFNm(NrFPath, NrFMid, Segs);
          // if segment-file exists then add segment else break check-loop
          if (TFile::Exists(SegFNm)){
            SegV.Add(TGBlobBs::New(SegFNm, Access, MxSegLen));
            Segs++;
          } else {
            break;
          }
        }
      }
      // if no segments exist then create blob-base from scratch
      if (Segs==-1){
        TStr SegFNm=GetSegFNm(NrFPath, NrFMid, 0);
        PBlobBs Seg=TGBlobBs::New(SegFNm, faCreate, MxSegLen);
        SegV.Add(Seg);
        SaveMain();
      }
      break;}
    default: Fail;
  }
}

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TMBlobBs::~TMBlobBs

(

)

Definition at line 503 of file blobbs.cpp.

References Access, faRdOnly, and SaveMain().

                   {
  if (Access!=faRdOnly){
    SaveMain();
  }
}

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Member Function Documentation

void TMBlobBs::DelBlob ( const TBlobPt &  BlobPt )

virtual

Implements TBlobBs.

Definition at line 546 of file blobbs.cpp.

References TBlobPt::GetSeg(), and SegV.

                                           {
  int SegN=BlobPt.GetSeg();
  SegV[SegN]->DelBlob(BlobPt);
}

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bool TMBlobBs::Exists ( const TStr &  BlobBsFNm )

static

Definition at line 576 of file blobbs.cpp.

References TFile::Exists(), GetMainFNm(), GetNrFPathFMid(), NrFMid, and NrFPath.

                                          {
  TStr NrFPath; TStr NrFMid; GetNrFPathFMid(BlobBsFNm, NrFPath, NrFMid);
  TStr MainFNm=GetMainFNm(NrFPath, NrFMid);
  return TFile::Exists(MainFNm);
}

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TBlobPt TMBlobBs::FFirstBlobPt ( )

virtual

Implements TBlobBs.

Definition at line 555 of file blobbs.cpp.

References SegV.

                              {
  return SegV[0]->FFirstBlobPt();
}

bool TMBlobBs::FNextBlobPt ( TBlobPt &  TrvBlobPt, TBlobPt &  BlobPt, PSIn &  BlobSIn  )

virtual

Implements TBlobBs.

Definition at line 559 of file blobbs.cpp.

References TBlobPt::GetSeg(), TVec< TVal, TSizeTy >::Len(), TBlobPt::PutSeg(), and SegV.

                                                                            {
  uchar SegN=TrvBlobPt.GetSeg();
  if (SegV[SegN]->FNextBlobPt(TrvBlobPt, BlobPt, BlobSIn)){
    TrvBlobPt.PutSeg(SegN);
    BlobPt.PutSeg(SegN);
    return true;
  } else
  if (SegN==SegV.Len()-1){
    return false;
  } else {
    SegN++;
    TrvBlobPt=SegV[SegN]->FFirstBlobPt();
    TrvBlobPt.PutSeg(SegN);
    return FNextBlobPt(TrvBlobPt, BlobPt, BlobSIn);
  }
}

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PSIn TMBlobBs::GetBlob ( const TBlobPt &  BlobPt )

virtual

Implements TBlobBs.

Definition at line 541 of file blobbs.cpp.

References TBlobPt::GetSeg(), and SegV.

                                           {
  int SegN=BlobPt.GetSeg();
  return SegV[SegN]->GetBlob(BlobPt);
}

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TBlobPt TMBlobBs::GetFirstBlobPt ( )

virtual

Implements TBlobBs.

Definition at line 551 of file blobbs.cpp.

References SegV.

                                {
  return SegV[0]->GetFirstBlobPt();
}

TStr TMBlobBs::GetMainFNm ( const TStr &  NrFPath, const TStr &  NrFMid  )

staticprivate

Definition at line 423 of file blobbs.cpp.

Referenced by Exists(), LoadMain(), SaveMain(), and TMBlobBs().

                                         {
  return NrFPath+NrFMid+".mbb";
}

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void TMBlobBs::GetNrFPathFMid ( const TStr &  BlobBsFNm, TStr &  NrFPath, TStr &  NrFMid  )

staticprivate

Definition at line 417 of file blobbs.cpp.

References TStr::GetFMid(), TStr::GetFPath(), TStr::GetNrFMid(), and TStr::GetNrFPath().

Referenced by Exists(), and TMBlobBs().

                                                    {
  NrFPath=TStr::GetNrFPath(BlobBsFNm.GetFPath());
  NrFMid=TStr::GetNrFMid(BlobBsFNm.GetFMid());
}

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TStr TMBlobBs::GetSegFNm ( const TStr &  NrFPath, const TStr &  NrFMid, const int &  SegN  )

staticprivate

Definition at line 428 of file blobbs.cpp.

References TStr::GetNrNumFExt().

Referenced by PutBlob(), and TMBlobBs().

                                                          {
  return NrFPath+NrFMid+".mbb"+""+TStr::GetNrNumFExt(SegN);
}

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TStr TMBlobBs::GetVersionStr ( ) const

inlinevirtual

Implements TBlobBs.

Definition at line 210 of file blobbs.h.

Referenced by LoadMain(), and SaveMain().

                             {
    return TStr("Multiple-File Blob Base Format 1.0");}

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void TMBlobBs::LoadMain ( int &  Segs )

private

Definition at line 433 of file blobbs.cpp.

References EAssert, GetMainFNm(), TILx::GetVarInt(), TILx::GetVarStr(), GetVersionStr(), MxSegLen, TFIn::New(), NrFMid, NrFPath, oloCsSens, oloFrcEoln, and oloSigNum.

Referenced by TMBlobBs().

                                {
  PSIn SIn=TFIn::New(GetMainFNm(NrFPath, NrFMid));
  TILx Lx(SIn, TFSet()|oloFrcEoln|oloSigNum|oloCsSens);
  EAssert(Lx.GetVarStr("Version")==GetVersionStr());
  MxSegLen=Lx.GetVarInt("MxSegLen");
  Segs=Lx.GetVarInt("Segments");
}

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static PBlobBs TMBlobBs::New ( const TStr &  BlobBsFNm, const TFAccess &  Access = faRdOnly, const int &  MxSegLen = -1  )

inlinestatic

Definition at line 203 of file blobbs.h.

References Access, MxSegLen, and TMBlobBs().

                          {
    return PBlobBs(new TMBlobBs(BlobBsFNm, Access, MxSegLen));}

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TMBlobBs& TMBlobBs::operator= ( const TMBlobBs &  )

inline

Definition at line 208 of file blobbs.h.

References Fail.

{Fail; return *this;}

TBlobPt TMBlobBs::PutBlob ( const PSIn &  SIn )

virtual

Implements TBlobBs.

Definition at line 509 of file blobbs.cpp.

References Access, TVec< TVal, TSizeTy >::Add(), CurSegN, EAssert, TBlobPt::Empty(), faCreate, faRestore, faUpdate, GetSegFNm(), TVec< TVal, TSizeTy >::Len(), MxSegLen, TGBlobBs::New(), NrFMid, NrFPath, TBlobPt::PutSeg(), and SegV.

Referenced by PutBlob().

                                        {
  EAssert((Access==faCreate)||(Access==faUpdate)||(Access==faRestore));
  TBlobPt BlobPt=SegV[CurSegN]->PutBlob(SIn);
  if (BlobPt.Empty()){
    for (uchar SegN=0; SegN<SegV.Len(); SegN++){
      BlobPt=SegV[CurSegN=SegN]->PutBlob(SIn);
      if (!BlobPt.Empty()){break;}
    }
    if (BlobPt.Empty()){
      TStr SegFNm=GetSegFNm(NrFPath, NrFMid, SegV.Len());
      PBlobBs Seg=TGBlobBs::New(SegFNm, faCreate, MxSegLen);
      CurSegN=SegV.Add(Seg); EAssert(CurSegN<=255);
      BlobPt=SegV[CurSegN]->PutBlob(SIn);
    }
  }
  if (!BlobPt.Empty()){
    BlobPt.PutSeg(uchar(CurSegN));}
  return BlobPt;
}

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TBlobPt TMBlobBs::PutBlob ( const TBlobPt &  BlobPt, const PSIn &  SIn  )

virtual

Implements TBlobBs.

Definition at line 529 of file blobbs.cpp.

References Access, EAssert, TBlobPt::Empty(), faCreate, faRestore, faUpdate, TBlobPt::GetSeg(), PutBlob(), TBlobPt::PutSeg(), and SegV.

                                                               {
  EAssert((Access==faCreate)||(Access==faUpdate)||(Access==faRestore));
  int SegN=BlobPt.GetSeg();
  TBlobPt NewBlobPt=SegV[SegN]->PutBlob(BlobPt, SIn);
  if (NewBlobPt.Empty()){
    NewBlobPt=PutBlob(SIn);
  } else {
    NewBlobPt.PutSeg(BlobPt.GetSeg());
  }
  return NewBlobPt;
}

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void TMBlobBs::SaveMain ( ) const

private

Definition at line 441 of file blobbs.cpp.

References GetMainFNm(), GetVersionStr(), TVec< TVal, TSizeTy >::Len(), MxSegLen, TFOut::New(), NrFMid, NrFPath, oloCsSens, oloFrcEoln, oloSigNum, TOLx::PutVarInt(), TOLx::PutVarStr(), and SegV.

Referenced by TMBlobBs(), and ~TMBlobBs().

                              {
  PSOut SOut=TFOut::New(GetMainFNm(NrFPath, NrFMid));
  TOLx Lx(SOut, TFSet()|oloFrcEoln|oloSigNum|oloCsSens);
  Lx.PutVarStr("Version", GetVersionStr());
  Lx.PutVarInt("MxSegLen", MxSegLen);
  Lx.PutVarInt("Segments", SegV.Len());
}

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Member Data Documentation

TFAccess TMBlobBs::Access

private

Definition at line 190 of file blobbs.h.

Referenced by New(), PutBlob(), TMBlobBs(), and ~TMBlobBs().

int TMBlobBs::CurSegN

private

Definition at line 194 of file blobbs.h.

Referenced by PutBlob().

int TMBlobBs::MxSegLen

private

Definition at line 191 of file blobbs.h.

Referenced by LoadMain(), New(), PutBlob(), SaveMain(), and TMBlobBs().

TStr TMBlobBs::NrFMid

private

Definition at line 192 of file blobbs.h.

Referenced by Exists(), LoadMain(), PutBlob(), SaveMain(), and TMBlobBs().

TStr TMBlobBs::NrFPath

private

Definition at line 192 of file blobbs.h.

Referenced by Exists(), LoadMain(), PutBlob(), SaveMain(), and TMBlobBs().

TBlobBsV TMBlobBs::SegV

private

Definition at line 193 of file blobbs.h.

Referenced by DelBlob(), FFirstBlobPt(), FNextBlobPt(), GetBlob(), GetFirstBlobPt(), PutBlob(), SaveMain(), and TMBlobBs().

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The documentation for this class was generated from the following files:

• glib-core/blobbs.h
• glib-core/blobbs.cpp