Re: Re-write a file in Ada

["J-P. Rosen" <rosen@adalog.fr>]

Le 18/01/2016 18:25, comicfanzine@gmail.com a écrit :
> In conclusion , i better use another way .
> 
> Feel free to propose anything else , if you have a idea .
> 
You must realize that in most operating systems, a file has no notion of
"line". A file is a heap of bytes, some of which are conventionnally
used to represent line ends. As a consequence, there is no way of
knowing the number of lines in a file without reading the whole file.
This is an OS issue, not a programming language issue.

If you don't mind reading the file twice, you can first count lines by
calling Skip_Line (and counting) until you hit the end of file. Then you
can declare your array, call Reset to rewind the file, and process the
file as you want.

HTH

-- 
J-P. Rosen
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