From: Peter Claessens <peter DOT claessens AT psy DOT kuleuven DOT ac DOT be>
Newsgroups: comp.os.msdos.djgpp
Subject: EOF reading pascal binary file
Date: Fri, 25 Jun 1999 17:17:10 +0200
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I'm using the following code to make a hexdump of a binary file I
generated with a (turbo)pascal program. The strange thing is: I get an
end-of-file signal before the end of the file is reached. So, in a file
of 716 bytes, this method stops after having read 78 bytes, claiming it
has reached the end of the file. It seems to work well for files
generated with C++. And on the other hand, tpascal can deal with both
pascal- and C++ files. No particular character seems to be at location
78; with a hex-editor (which correctly shows all 716 bytes) I have 1A02
there (for bytes with decimal offset 78-79, or 79-78, with byte
inversion). Does anyone know what is going on here? Are there any other
tricky details involved in reading pascal-generated files with a
c-compiled program? Is there an online source about these?
I'm using egcs 1.2.

  ifstream inpfile(cmdarglist[0].c_str(),ios::in||ios::binary);
  unsigned short int x;
  int n;
  for(n=0;;n++) {
    inpfile.read((char*)&x,sizeof(x));
    if (inpfile.eof()) {
      cout << endl << "End of file reached." << endl;
      break;
    }
    if (inpfile.fail()) {
      cerr << endl << "Error before end of file at byte " << n*sizeof(x)
<< endl;
      break;
    }
    else cout << hex << x << " ";
  }
  clog << "Read " << n*sizeof(x) << " bytes." << endl;


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