Method ReadHeader

Libraries/unrar/arcread.cpp:3–45

#include "rar.hpp"

size_t Archive::ReadHeader()
{
  // Once we failed to decrypt an encrypted block, there is no reason to
  // attempt to do it further. We'll never be successful and only generate
  // endless errors.
  if (FailedHeaderDecryption)
    return 0;

  CurBlockPos=Tell();

  // Other developers asked us to initialize it to suppress "may be used
  // uninitialized" warning in code below in some compilers.
  size_t ReadSize=0;

  switch(Format)
  {
#ifndef SFX_MODULE
    case RARFMT14:
      ReadSize=ReadHeader14();
      break;
#endif
    case RARFMT15:
      ReadSize=ReadHeader15();
      break;
    case RARFMT50:
      ReadSize=ReadHeader50();
      break;
  }

  // It is important to check ReadSize>0 here, because it is normal
  // for RAR2 and RAR3 archives without end of archive block to have
  // NextBlockPos==CurBlockPos after the end of archive has reached.
  if (ReadSize>0 && NextBlockPos<=CurBlockPos)
  {
    BrokenHeaderMsg();
    ReadSize=0;
  }

  if (ReadSize==0)
    CurHeaderType=HEAD_UNKNOWN;

  return ReadSize;
}


size_t Archive::SearchBlock(HEADER_TYPE HeaderType)