int __cdecl read_file_sub_101BD520(int this_a1, const char *filenameb)
{
  FILE *fd_; // eax@1 MAPDST
  int res; // eax@2
  void (__cdecl *_fread)(void *, size_t, size_t, FILE *); // esi@3
  int v7; // eax@3
  const char *v8; // ecx@3
  int v9; // edx@4
  const char *szv10; // eax@7
  int ptrv11; // eax@9 MAPDST
  int v12; // ecx@9
  int v14; // eax@9
  int v15; // ecx@13
  size_t v16; // ecx@17
  int v17; // eax@17
  int szv18; // edx@18
  const void *v19; // eax@21
  char *v20; // edi@24
  int v21[41]; // [sp+4h] [bp-B4h]@21
  size_t ElementSize; // [sp+A8h] [bp-10h]@9
  void *v23; // [sp+ACh] [bp-Ch]@3
  int i; // [sp+B0h] [bp-8h]@9
  int idxv33; // [sp+B4h] [bp-4h]@13

  fd_ = fopen(filenameb, "rb");
  if ( fd_ )
  {
    _fread = fread;
    filenameb = 0;
    fread(&filenameb, 4u, 1u, fd_);
    v7 = *(_DWORD *)(this_a1 + 4);
    v8 = filenameb + 1;
    v23 = (void *)(filenameb + 1);
    if ( v7 )
      v9 = (*(_DWORD *)(this_a1 + 12) - v7) / 164;
    else
      v9 = 0;
    if ( v9 < (unsigned int)v8 )
    {
      szv10 = filenameb + 1;
      if ( (signed int)v8 < 0 )
        szv10 = 0;
      ptrv11 = operator new(164 * (_DWORD)szv10);
      v12 = *(_DWORD *)(this_a1 + 8);
      ElementSize = ptrv11;
      v14 = *(_DWORD *)(this_a1 + 4);
      for ( i = v12; v14 != v12; ptrv11 += 164 )
      {
        if ( ptrv11 )
        {
          memcpy((void *)ptrv11, (const void *)v14, 164u);
          _fread = fread;
          v12 = i;
        }
        v14 += 164;
      }
      v15 = *(_DWORD *)(this_a1 + 4);
      i = *(_DWORD *)(this_a1 + 8);
      idxv33 = v15;
      if ( v15 != i )
      {
        while ( 1 )
        {
          delete_sub_101BE180(v15, ptrv11, 0);
          idxv33 += 164;
          if ( idxv33 == i )
            break;
          v15 = idxv33;
        }
      }
      operator delete(*(_DWORD *)(this_a1 + 4));
      v16 = ElementSize;
      *(_DWORD *)(this_a1 + 12) = ElementSize + 164 * (_DWORD)v23;
      v17 = *(_DWORD *)(this_a1 + 4);
      if ( v17 )
        szv18 = (*(_DWORD *)(this_a1 + 8) - v17) / 164;
      else
        szv18 = 0;
      *(_DWORD *)(this_a1 + 8) = v16 + 164 * szv18;
      *(_DWORD *)(this_a1 + 4) = v16;
    }
    v23 = (void *)SE_Get_UIManagerPtr();
    clear_sub_101BD4F0(v21);
    sub_101BDC70(this_a1, *(const void **)(this_a1 + 8), 1u, v19);
    for ( i = 0; i < (signed int)filenameb; ++i )
    {
      clear_sub_101BD4F0(v21);
      _fread(v21, 4u, 1u, fd_);
      _fread(&v21[1], 4u, 1u, fd_);
      _fread(&v21[2], 4u, 1u, fd_);
      _fread(&ElementSize, 4u, 1u, fd_);
      if ( !((size_t (__cdecl *)(void *, size_t, size_t, FILE *))_fread)(&v21[4], ElementSize, 1u, fd_) )
        CUIManager::SetNoTranslationString(v23, 5, v21[0]);
      _fread(&v21[17], 4u, 1u, fd_);
      _fread(&v21[18], 4u, 1u, fd_);
      _fread(&v21[19], 4u, 1u, fd_);
      _fread(&v21[20], 4u, 1u, fd_);
      v20 = (char *)&v21[22];
      idxv33 = 10;
      do
      {
        _fread(v20 - 4, 4u, 1u, fd_);
        _fread(v20, 4u, 1u, fd_);
        v20 += 8;
        --idxv33;
      }
      while ( idxv33 );
      sub_101BDC70(this_a1, *(const void **)(this_a1 + 8), 1u, v21);
    }
    fclose(fd_);
    res = (int)filenameb;
  }
  else
  {
    MessageBoxA(0, "File is not Exist.", "error!", 0);
    res = -1;
  }
  return res;
}