Le 19/11/2011 23:48, Richard J.M. Hill a écrit :
 
> The fact that a limit was placed on the maximum line-length suggests
> to me one of two things; either the person who wrote believed that it
> was necessary, or they were re-using code from somewhere else, and
> neglected to remove that restriction.

They took the code from the 'file' program where it's used to say
"with very long lines". There is the following comment in the source:
// This code is taken from the "file" command, where it is licensed
// in the "beer-ware license" :-)
// Original author: <joerg@...>

The limit (TEXT_MAXLINELEN 300) is commented by:
/* Maximal length of a line we consider "reasonable". */

And if there's such a line, they consider the file isn't a text file.
That's not "reasonable", I think. ;-)

> to be necessary, maybe we should try to imagine why it is there.  The
> first thing that pops into my head (and again, remember my ignorance
> in the ways of programming) is that they wanted to avoid the
> possibility of buffer overflows or race conditions.

I don't think so.
If a line is longer than 301 bytes, conf->resultBuf = MIME_TEXT_PLAIN is
not executed, that's all.
The code I modified is really only used to define if the file is plain
text or not.

-- 
Laurent Dard