Function RawGetV

Libraries/unrar/rawread.cpp:184–197

Read vint from arbitrary byte array.

// Read vint from arbitrary byte array.
uint64 RawGetV(const byte *Data,uint &ReadPos,uint DataSize,bool &Overflow)
{
  Overflow=false;
  uint64 Result=0;
  for (uint Shift=0;ReadPos<DataSize;Shift+=7)
  {
    byte CurByte=Data[ReadPos++];
    Result+=uint64(CurByte & 0x7f)<<Shift;
    if ((CurByte & 0x80)==0)
      return Result; // Decoded successfully.
  }
  Overflow=true;
  return 0; // Out of buffer border.
}