[Octave-bug-tracker] [bug #51158] save function corrupts text / binary files when appending as binary / text respectively

[Rik]

Update of bug #51158 (project octave):

                Priority:              5 - Normal => 3 - Low                
                  Status:                    None => Confirmed              

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Follow-up Comment #2:

I agree that it would be nicer to have a warning message and stop appending,
rather than corrupting the existing data file.

An easy way to check whether the file is an Octave binary data file is to look
for the special pattern 'Octave' at the beginning of the file.  In an m-file,
something like this would work


fid = fopen (filename, "rb");
sig = fread (fid, 6, "*uchar");
is_binary = strcmp (sig.', "Octave");


I think that may need to be converted to C++.


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