[Octave-bug-tracker] [bug #51871] loading '-ascii' format files is slow

[Rik]

Follow-up Comment #20, bug #51871 (project octave):

Given that opening in binary and processing character by character is going to
be slow, can we detect the file format before processing?  If so, the function
std::getline has a form which uses whatever delimiter you like


istream& getline (istream& is, string& str, char delim);


This speed-up patch could then be only minimally modified.

The obvious test would be to peek into the first, say 255 bytes, of the file
and see if we find a line ending.


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