Re: JGIT: discuss: diff/patch implementation

[Francis Galiegue <fg@one2team.net>]

Le Monday 10 November 2008 17:59:03 Robin Rosenberg, vous avez écrit :
[Sorry if this is offtopic for the git mailing list...]

> >
> > Well, this API has a problem from the get go, since it does... Char by
> > char comparison. Ouch.
> >
> > I'll try and hack it so that it does line by line, but given my Java
> > skills, uh...
>
> We might want a byte-oriented version. Converting to char first is way
> too slow.
>

Well, AFAICT, here is how the current git code detects whether a file is 
binary or not:

----
#define FIRST_FEW_BYTES 8000
int buffer_is_binary(const char *ptr, unsigned long size)
{
	if (FIRST_FEW_BYTES < size)
		size = FIRST_FEW_BYTES;
	return !!memchr(ptr, 0, size);
}
----

Easy enough to be coded in Java, hey, even I could do it :p

So, provided binary files are dealt with already, what penalty is left for 
Java to deal with?

-- 
fge