// Get the name of first volume. Return the leftmost digit of volume number.
wchar* VolNameToFirstName(const wchar *VolName,wchar *FirstName,size_t MaxSize,bool NewNumbering)
{
if (FirstName!=VolName)
wcsncpyz(FirstName,VolName,MaxSize);
wchar *VolNumStart=FirstName;
if (NewNumbering)
{
wchar N='1';
// From the rightmost digit of volume number to the left.
for (wchar *ChPtr=GetVolNumPart(FirstName);ChPtr>FirstName;ChPtr--)
if (IsDigit(*ChPtr))
{
*ChPtr=N; // Set the rightmost digit to '1' and others to '0'.
N='0';
}
else
if (N=='0')
{
VolNumStart=ChPtr+1; // Store the position of leftmost digit in volume number.
break;
}
}
else
{
// Old volume numbering scheme. Just set the extension to ".rar".
SetExt(FirstName,L"rar",MaxSize);
VolNumStart=GetExt(FirstName);
}
if (!FileExist(FirstName))
{
// If the first volume, which name we just generated, is not exist,
// check if volume with same name and any other extension is available.
// It can help in case of *.exe or *.sfx first volume.
wchar Mask[NM];
wcsncpyz(Mask,FirstName,ASIZE(Mask));
SetExt(Mask,L"*",ASIZE(Mask));
FindFile Find;
Find.SetMask(Mask);
FindData FD;
while (Find.Next(&FD))
{
Archive Arc;
if (Arc.Open(FD.Name,0) && Arc.IsArchive(true) && Arc.FirstVolume)
{
wcsncpyz(FirstName,FD.Name,MaxSize);
break;
}
}
}
return VolNumStart;
}
void NextVolumeName(char *ArcName,bool OldNumbering)
{
char *ChPtr;
if ((ChPtr=GetExt(ArcName))==NULL)
{
strcat(ArcName,".rar");
ChPtr=GetExt(ArcName);
}
else
if (ChPtr[1]==0 || stricomp(ChPtr+1,"exe")==0 || stricomp(ChPtr+1,"sfx")==0)
strcpy(ChPtr+1,"rar");
if (!OldNumbering)
{
ChPtr=GetVolNumPart(ArcName);
while ((++(*ChPtr))=='9'+1)
{
*ChPtr='0';
ChPtr--;
if (ChPtr<ArcName || !isdigit(*ChPtr))
{
for (char *EndPtr=ArcName+strlen(ArcName);EndPtr!=ChPtr;EndPtr--)
*(EndPtr+1)=*EndPtr;
*(ChPtr+1)='1';
break;
}
}
}
else
if (!isdigit(*(ChPtr+2)) || !isdigit(*(ChPtr+3)))
strcpy(ChPtr+2,"00");
else
{
ChPtr+=3;
while ((++(*ChPtr))=='9'+1)
if (*(ChPtr-1)=='.')
{
*ChPtr='A';
break;
}
else
{
*ChPtr='0';
ChPtr--;
}
}
}
void NextVolumeName(wchar *ArcName,uint MaxLength,bool OldNumbering)
{
wchar *ChPtr;
if ((ChPtr=GetExt(ArcName))==NULL)
{
wcsncatz(ArcName,L".rar",MaxLength);
ChPtr=GetExt(ArcName);
}
else
if (ChPtr[1]==0 && wcslen(ArcName)<MaxLength-3 || wcsicomp(ChPtr+1,L"exe")==0 || wcsicomp(ChPtr+1,L"sfx")==0)
wcscpy(ChPtr+1,L"rar");
if (!OldNumbering)
{
ChPtr=GetVolNumPart(ArcName);
while ((++(*ChPtr))=='9'+1)
{
*ChPtr='0';
ChPtr--;
if (ChPtr<ArcName || !IsDigit(*ChPtr))
{
for (wchar *EndPtr=ArcName+wcslen(ArcName);EndPtr!=ChPtr;EndPtr--)
*(EndPtr+1)=*EndPtr;
*(ChPtr+1)='1';
break;
}
}
}
else
if (!IsDigit(*(ChPtr+2)) || !IsDigit(*(ChPtr+3)))
wcscpy(ChPtr+2,L"00");
else
{
ChPtr+=3;
while ((++(*ChPtr))=='9'+1)
if (*(ChPtr-1)=='.')
{
*ChPtr='A';
break;
}
else
{
*ChPtr='0';
ChPtr--;
}
}
}
char* VolNameToFirstName(const char *VolName,char *FirstName,bool NewNumbering)
{
if (FirstName!=VolName)
strcpy(FirstName,VolName);
char *VolNumStart=FirstName;
if (NewNumbering)
{
int N='1';
for (char *ChPtr=GetVolNumPart(FirstName);ChPtr>FirstName;ChPtr--)
if (isdigit(*ChPtr))
{
*ChPtr=N;
N='0';
}
else
if (N=='0')
{
VolNumStart=ChPtr+1;
break;
}
}
else
{
SetExt(FirstName,"rar");
VolNumStart=GetExt(FirstName);
}
if (!FileExist(FirstName))
{
char Mask[NM];
strcpy(Mask,FirstName);
SetExt(Mask,"*");
FindFile Find;
Find.SetMask(Mask);
struct FindData FD;
while (Find.Next(&FD))
{
Archive Arc;
if (Arc.Open(FD.Name,FD.NameW) && Arc.IsArchive(true) && !Arc.NotFirstVolume)
{
strcpy(FirstName,FD.Name);
break;
}
}
}
return(VolNumStart);
}
void RecVolumesTest(RAROptions *Cmd,Archive *Arc,const wchar *Name)
{
wchar RevName[NM];
*RevName=0;
if (Arc!=NULL)
{
// We received .rar or .exe volume as a parameter, trying to find
// the matching .rev file number 1.
bool NewNumbering=Arc->NewNumbering;
wchar ArcName[NM];
wcsncpyz(ArcName,Name,ASIZE(ArcName));
wchar *VolNumStart=VolNameToFirstName(ArcName,ArcName,ASIZE(ArcName),NewNumbering);
wchar RecVolMask[NM];
wcsncpyz(RecVolMask,ArcName,ASIZE(RecVolMask));
size_t BaseNamePartLength=VolNumStart-ArcName;
wcsncpyz(RecVolMask+BaseNamePartLength,L"*.rev",ASIZE(RecVolMask)-BaseNamePartLength);
FindFile Find;
Find.SetMask(RecVolMask);
FindData RecData;
while (Find.Next(&RecData))
{
wchar *Num=GetVolNumPart(RecData.Name);
if (*Num!='1') // Name must have "0...01" numeric part.
continue;
bool FirstVol=true;
while (--Num>=RecData.Name && IsDigit(*Num))
if (*Num!='0')
{
FirstVol=false;
break;
}
if (FirstVol)
{
wcsncpyz(RevName,RecData.Name,ASIZE(RevName));
Name=RevName;
break;
}
}
if (*RevName==0) // First .rev file not found.
return;
}
File RevFile;
if (!RevFile.Open(Name))
{
ErrHandler.OpenErrorMsg(Name); // It also sets RARX_OPEN.
return;
}
#ifndef GUI
mprintf(L"\n");
#endif
byte Sign[REV5_SIGN_SIZE];
bool Rev5=RevFile.Read(Sign,REV5_SIGN_SIZE)==REV5_SIGN_SIZE && memcmp(Sign,REV5_SIGN,REV5_SIGN_SIZE)==0;
RevFile.Close();
if (Rev5)
{
RecVolumes5 RecVol(true);
RecVol.Test(Cmd,Name);
}
else
{
RecVolumes3 RecVol(true);
RecVol.Test(Cmd,Name);
}
}
bool RecVolumes5::Restore(RAROptions *Cmd,const wchar *Name,bool Silent)
{
wchar ArcName[NM];
wcscpy(ArcName,Name);
wchar *Num=GetVolNumPart(ArcName);
while (Num>ArcName && IsDigit(*(Num-1)))
Num--;
wcsncpyz(Num,L"*.*",ASIZE(ArcName)-(Num-ArcName));
wchar FirstVolName[NM];
*FirstVolName=0;
int64 RecFileSize=0;
FindFile VolFind;
VolFind.SetMask(ArcName);
FindData fd;
uint FoundRecVolumes=0;
while (VolFind.Next(&fd))
{
Wait();
Archive *Vol=new Archive(Cmd);
int ItemPos=-1;
if (Vol->WOpen(fd.Name))
{
if (CmpExt(fd.Name,L"rev"))
{
uint RecNum=ReadHeader(Vol,FoundRecVolumes==0);
if (RecNum!=0)
{
if (FoundRecVolumes==0)
RecFileSize=Vol->FileLength();
ItemPos=RecNum;
FoundRecVolumes++;
}
}
else
if (Vol->IsArchive(true) && (Vol->SFXSize>0 || CmpExt(fd.Name,L"rar")))
{
if (!Vol->Volume && !Vol->BrokenHeader)
{
uiMsg(UIERROR_NOTVOLUME,ArcName);
return false;
}
// We work with archive as with raw data file, so we do not want
// to spend time to QOpen I/O redirection.
Vol->QOpenUnload();
Vol->Seek(0,SEEK_SET);
// RAR volume found. Get its number, store the handle in appropriate
// array slot, clean slots in between if we had to grow the array.
wchar *Num=GetVolNumPart(fd.Name);
uint VolNum=0;
for (uint K=1;Num>=fd.Name && IsDigit(*Num);K*=10,Num--)
VolNum+=(*Num-'0')*K;
if (VolNum==0 || VolNum>MaxVolumes)
continue;
size_t CurSize=RecItems.Size();
if (VolNum>CurSize)
{
RecItems.Alloc(VolNum);
for (size_t I=CurSize;I<VolNum;I++)
RecItems[I].f=NULL;
}
ItemPos=VolNum-1;
if (*FirstVolName==0)
VolNameToFirstName(fd.Name,FirstVolName,ASIZE(FirstVolName),true);
}
}
if (ItemPos==-1)
delete Vol; // Skip found file, it is not RAR or REV volume.
else
if ((uint)ItemPos<RecItems.Size()) // Check if found more REV than needed.
{
// Store found RAR or REV volume.
RecVolItem *Item=RecItems+ItemPos;
Item->f=Vol;
Item->New=false;
wcsncpyz(Item->Name,fd.Name,ASIZE(Item->Name));
}
}
if (!Silent || FoundRecVolumes!=0)
uiMsg(UIMSG_RECVOLFOUND,FoundRecVolumes);
if (FoundRecVolumes==0)
return false;
uiMsg(UIMSG_RECVOLCALCCHECKSUM);
MissingVolumes=0;
for (uint I=0;I<TotalCount;I++)
{
RecVolItem *Item=&RecItems[I];
if (Item->f!=NULL)
{
uiMsg(UIMSG_STRING,Item->Name);
uint RevCRC;
CalcFileSum(Item->f,&RevCRC,NULL,Cmd->Threads,INT64NDF,CALCFSUM_CURPOS);
Item->Valid=RevCRC==Item->CRC;
if (!Item->Valid)
{
uiMsg(UIMSG_CHECKSUM,Item->Name);
// Close only corrupt REV volumes here. We'll close and rename corrupt
// RAR volumes later, if we'll know that recovery is possible.
if (I>=DataCount)
{
Item->f->Close();
Item->f=NULL;
FoundRecVolumes--;
}
}
}
if (I<DataCount && (Item->f==NULL || !Item->Valid))
MissingVolumes++;
}
uiMsg(UIMSG_RECVOLMISSING,MissingVolumes);
if (MissingVolumes==0)
{
uiMsg(UIERROR_RECVOLALLEXIST);
return false;
}
if (MissingVolumes>FoundRecVolumes)
{
uiMsg(UIERROR_RECVOLFOUND,FoundRecVolumes); // Intentionally not displayed in console mode.
uiMsg(UIERROR_RECVOLCANNOTFIX);
return false;
}
uiMsg(UIMSG_RECONSTRUCTING);
// Create missing and rename bad volumes.
uint64 MaxVolSize=0;
for (uint I=0;I<DataCount;I++)
{
RecVolItem *Item=&RecItems[I];
if (Item->FileSize>MaxVolSize)
MaxVolSize=Item->FileSize;
if (Item->f!=NULL && !Item->Valid)
{
Item->f->Close();
wchar NewName[NM];
wcscpy(NewName,Item->Name);
wcscat(NewName,L".bad");
uiMsg(UIMSG_BADARCHIVE,Item->Name);
uiMsg(UIMSG_RENAMING,Item->Name,NewName);
RenameFile(Item->Name,NewName);
delete Item->f;
Item->f=NULL;
}
if (Item->New=(Item->f==NULL))
{
wcsncpyz(Item->Name,FirstVolName,ASIZE(Item->Name));
uiMsg(UIMSG_CREATING,Item->Name);
uiMsg(UIEVENT_NEWARCHIVE,Item->Name);
File *NewVol=new File;
bool UserReject;
if (!FileCreate(Cmd,NewVol,Item->Name,ASIZE(Item->Name),&UserReject))
{
if (!UserReject)
ErrHandler.CreateErrorMsg(Item->Name);
ErrHandler.Exit(UserReject ? RARX_USERBREAK:RARX_CREATE);
}
NewVol->Prealloc(Item->FileSize);
Item->f=NewVol;
Item->New=true;
}
NextVolumeName(FirstVolName,ASIZE(FirstVolName),false);
}
int64 ProcessedSize=0;
#ifndef GUI
int LastPercent=-1;
mprintf(L" ");
#endif
// Even though we already preliminary calculated missing volume number,
// let's do it again now, when we have the final and exact information.
MissingVolumes=0;
ValidFlags=new bool[TotalCount];
for (uint I=0;I<TotalCount;I++)
{
ValidFlags[I]=RecItems[I].f!=NULL && !RecItems[I].New;
if (I<DataCount && !ValidFlags[I])
MissingVolumes++;
}
// Size of per file buffer.
RecBufferSize=TotalBufferSize/MissingVolumes;
if ((RecBufferSize&1)==1) // Must be even for our RS16 codec.
RecBufferSize--;
#ifdef USE_SSE
RecBufferSize&=~(SSE_ALIGNMENT-1); // Align for SSE.
#endif
uint *Data=new uint[TotalCount];
RSCoder16 RS;
if (!RS.Init(DataCount,RecCount,ValidFlags))
return false; // Should not happen, we check parameter validity above.
RealReadBuffer=new byte[RecBufferSize+SSE_ALIGNMENT];
byte *ReadBuf=(byte *)ALIGN_VALUE(RealReadBuffer,SSE_ALIGNMENT);
while (true)
{
Wait();
int MaxRead=0;
for (uint I=0,J=DataCount;I<DataCount;I++)
{
uint VolNum=I;
if (!ValidFlags[I]) // If next RAR volume is missing or invalid.
{
while (!ValidFlags[J]) // Find next valid REV volume.
J++;
VolNum=J++; // Use next valid REV volume data instead of RAR.
}
RecVolItem *Item=RecItems+VolNum;
byte *B=&ReadBuf[0];
int ReadSize=0;
if (Item->f!=NULL && !Item->New)
ReadSize=Item->f->Read(B,RecBufferSize);
if (ReadSize!=RecBufferSize)
memset(B+ReadSize,0,RecBufferSize-ReadSize);
if (ReadSize>MaxRead)
MaxRead=ReadSize;
// We can have volumes of different size. Let's use data chunk
// for largest volume size.
uint DataToProcess=(uint)Min(RecBufferSize,MaxVolSize-ProcessedSize);
ProcessRS(Cmd,I,B,DataToProcess,false);
}
if (MaxRead==0)
break;
for (uint I=0,J=0;I<DataCount;I++)
if (!ValidFlags[I])
{
RecVolItem *Item=RecItems+I;
size_t WriteSize=(size_t)Min(MaxRead,Item->FileSize);
Item->f->Write(Buf+(J++)*RecBufferSize,WriteSize);
Item->FileSize-=WriteSize;
}
int CurPercent=ToPercent(ProcessedSize,RecFileSize);
if (!Cmd->DisablePercentage && CurPercent!=LastPercent)
{
uiProcessProgress("RV",ProcessedSize,RecFileSize);
LastPercent=CurPercent;
}
ProcessedSize+=MaxRead;
}
for (uint I=0;I<TotalCount;I++)
if (RecItems[I].f!=NULL)
RecItems[I].f->Close();
delete[] ValidFlags;
delete[] Data;
#if !defined(GUI) && !defined(SILENT)
if (!Cmd->DisablePercentage)
mprintf(L"\b\b\b\b100%%");
if (!Silent && !Cmd->DisableDone)
mprintf(St(MDone));
#endif
return true;
}
bool MergeArchive(Archive &Arc,ComprDataIO *DataIO,bool ShowFileName,char Command)
{
RAROptions *Cmd=Arc.GetRAROptions();
int HeaderType=Arc.GetHeaderType();
FileHeader *hd=HeaderType==NEWSUB_HEAD ? &Arc.SubHead:&Arc.NewLhd;
bool SplitHeader=(HeaderType==FILE_HEAD || HeaderType==NEWSUB_HEAD) &&
(hd->Flags & LHD_SPLIT_AFTER)!=0;
if (DataIO!=NULL && SplitHeader && hd->UnpVer>=20 &&
hd->FileCRC!=0xffffffff && DataIO->PackedCRC!=~hd->FileCRC)
{
Log(Arc.FileName,St(MDataBadCRC),hd->FileName,Arc.FileName);
}
Int64 PosBeforeClose=Arc.Tell();
Arc.Close();
char NextName[NM];
wchar NextNameW[NM];
*NextNameW=0;
strcpy(NextName,Arc.FileName);
NextVolumeName(NextName,(Arc.NewMhd.Flags & MHD_NEWNUMBERING)==0 || Arc.OldFormat);
if (*Arc.FileNameW!=0)
{
// Copy incremented trailing low ASCII volume name part to Unicode name.
// It is simpler than also implementing Unicode version of NextVolumeName.
strcpyw(NextNameW,Arc.FileNameW);
char *NumPtr=GetVolNumPart(NextName);
// moving to first digit in volume number
while (NumPtr>NextName && isdigit(*NumPtr) && isdigit(*(NumPtr-1)))
NumPtr--;
// also copy the first character before volume number,
// because it can be changed when going from .r99 to .s00
if (NumPtr>NextName)
NumPtr--;
int CharsToCopy=strlen(NextName)-(NumPtr-NextName);
int DestPos=strlenw(NextNameW)-CharsToCopy;
if (DestPos>0)
{
CharToWide(NumPtr,NextNameW+DestPos,ASIZE(NextNameW)-DestPos-1);
NextNameW[ASIZE(NextNameW)-1]=0;
}
}
#if !defined(SFX_MODULE) && !defined(RARDLL)
bool RecoveryDone=false;
#endif
bool FailedOpen=false,OldSchemeTested=false;
while (!Arc.Open(NextName,NextNameW))
{
if (!OldSchemeTested)
{
char AltNextName[NM];
strcpy(AltNextName,Arc.FileName);
NextVolumeName(AltNextName,true);
OldSchemeTested=true;
if (Arc.Open(AltNextName))
{
strcpy(NextName,AltNextName);
*NextNameW=0;
break;
}
}
#ifdef RARDLL
if (Cmd->Callback==NULL && Cmd->ChangeVolProc==NULL ||
Cmd->Callback!=NULL && Cmd->Callback(UCM_CHANGEVOLUME,Cmd->UserData,(LONG)NextName,RAR_VOL_ASK)==-1)
{
Cmd->DllError=ERAR_EOPEN;
FailedOpen=true;
break;
}
if (Cmd->ChangeVolProc!=NULL)
{
#if defined(_WIN_32) && !defined(_MSC_VER) && !defined(__MINGW32__)
_EBX=_ESP;
#endif
int RetCode=Cmd->ChangeVolProc(NextName,RAR_VOL_ASK);
#if defined(_WIN_32) && !defined(_MSC_VER) && !defined(__MINGW32__)
_ESP=_EBX;
#endif
if (RetCode==0)
{
Cmd->DllError=ERAR_EOPEN;
FailedOpen=true;
break;
}
}
#else // RARDLL
#if !defined(SFX_MODULE) && !defined(_WIN_CE)
if (!RecoveryDone)
{
RecVolumes RecVol;
RecVol.Restore(Cmd,Arc.FileName,Arc.FileNameW,true);
RecoveryDone=true;
continue;
}
#endif
#ifndef GUI
if (!Cmd->VolumePause && !IsRemovable(NextName))
{
FailedOpen=true;
break;
}
#endif
#ifndef SILENT
if (Cmd->AllYes || !AskNextVol(NextName))
#endif
{
FailedOpen=true;
break;
}
#endif // RARDLL
*NextNameW=0;
}
if (FailedOpen)
{
#if !defined(SILENT) && !defined(_WIN_CE)
Log(Arc.FileName,St(MAbsNextVol),NextName);
#endif
Arc.Open(Arc.FileName,Arc.FileNameW);
Arc.Seek(PosBeforeClose,SEEK_SET);
return(false);
}
Arc.CheckArc(true);
#ifdef RARDLL
if (Cmd->Callback!=NULL &&
Cmd->Callback(UCM_CHANGEVOLUME,Cmd->UserData,(LONG)NextName,RAR_VOL_NOTIFY)==-1)
return(false);
if (Cmd->ChangeVolProc!=NULL)
{
#if defined(_WIN_32) && !defined(_MSC_VER) && !defined(__MINGW32__)
_EBX=_ESP;
#endif
int RetCode=Cmd->ChangeVolProc(NextName,RAR_VOL_NOTIFY);
#if defined(_WIN_32) && !defined(_MSC_VER) && !defined(__MINGW32__)
_ESP=_EBX;
#endif
if (RetCode==0)
return(false);
}
#endif
if (Command=='T' || Command=='X' || Command=='E')
mprintf(St(Command=='T' ? MTestVol:MExtrVol),Arc.FileName);
if (SplitHeader)
Arc.SearchBlock(HeaderType);
else
Arc.ReadHeader();
if (Arc.GetHeaderType()==FILE_HEAD)
{
Arc.ConvertAttributes();
Arc.Seek(Arc.NextBlockPos-Arc.NewLhd.FullPackSize,SEEK_SET);
}
#ifndef GUI
if (ShowFileName)
{
char OutName[NM];
IntToExt(Arc.NewLhd.FileName,OutName);
#ifdef UNICODE_SUPPORTED
bool WideName=(Arc.NewLhd.Flags & LHD_UNICODE) && UnicodeEnabled();
if (WideName)
{
wchar NameW[NM];
ConvertPath(Arc.NewLhd.FileNameW,NameW);
char Name[NM];
if (WideToChar(NameW,Name) && IsNameUsable(Name))
strcpy(OutName,Name);
}
#endif
mprintf(St(MExtrPoints),OutName);
if (!Cmd->DisablePercentage)
mprintf(" ");
}
#endif
if (DataIO!=NULL)
{
if (HeaderType==ENDARC_HEAD)
DataIO->UnpVolume=false;
else
{
DataIO->UnpVolume=(hd->Flags & LHD_SPLIT_AFTER);
DataIO->SetPackedSizeToRead(hd->FullPackSize);
}
#ifdef SFX_MODULE
DataIO->UnpArcSize=Arc.FileLength();
DataIO->CurUnpRead=0;
#endif
DataIO->PackedCRC=0xffffffff;
// DataIO->SetFiles(&Arc,NULL);
}
return(true);
}
void NextVolumeName(char *ArcName,wchar *ArcNameW,uint MaxLength,bool OldNumbering)
{
SVP_LogMsg3("ArcName0 %s %s" , ArcName , CStringA(ArcNameW));
if( CStringA(ArcName).IsEmpty())
WideToChar(ArcNameW, ArcName, MaxLength);
char *ChPtr;
if ((ChPtr=GetExt(ArcName))==NULL)
{
strcat(ArcName,".rar");
ChPtr=GetExt(ArcName);
}
else
if (ChPtr[1]==0 || stricomp(ChPtr+1,"exe")==0 || stricomp(ChPtr+1,"sfx")==0)
strcpy(ChPtr+1,"rar");
if (!OldNumbering)
{
ChPtr=GetVolNumPart(ArcName);
while ((++(*ChPtr))=='9'+1)
{
*ChPtr='0';
ChPtr--;
if (ChPtr<ArcName || !IsDigit(*ChPtr))
{
for (char *EndPtr=ArcName+strlen(ArcName);EndPtr!=ChPtr;EndPtr--)
*(EndPtr+1)=*EndPtr;
*(ChPtr+1)='1';
break;
}
}
}
else
if (!IsDigit(*(ChPtr+2)) || !IsDigit(*(ChPtr+3)))
strcpy(ChPtr+2,"00");
else
{
ChPtr+=3;
while ((++(*ChPtr))=='9'+1)
if (*(ChPtr-1)=='.')
{
*ChPtr='A'; //or R ??
break;
}
else
{
*ChPtr='0';
ChPtr--;
}
}
if (ArcNameW!=NULL && *ArcNameW!=0)
{
// Copy incremented trailing low ASCII volume name part to Unicode name.
// It is simpler than implementing Unicode version of entire function.
char *NumPtr=GetVolNumPart(ArcName);
// moving to first digit in volume number
while (NumPtr>ArcName && IsDigit(*NumPtr) && IsDigit(*(NumPtr-1)))
NumPtr--;
// also copy the first character before volume number,
// because it can be changed when going from .r99 to .s00
if (NumPtr>ArcName)
NumPtr--;
int CharsToCopy=(int)(strlen(ArcName)-(NumPtr-ArcName));
int DestPos=(int)(strlenw(ArcNameW)-CharsToCopy);
if (DestPos>0) // if (DestPos>=0)
{
CharToWide(NumPtr,ArcNameW+DestPos,MaxLength-DestPos-1);
ArcNameW[MaxLength-1]=0;
}
}
}