OpenEuphoria

Text File Comparison

• Posted by petelomax at blueyonder.co.uk Feb 08, 2002
• 643 views

Looking for a source file comparison utility - must be written in
Euphoria or a source I can translate.

Thinking out loud, it seems non-trivial to report the smallest
possible number of changed lines, which is what I want.

At the moment I'm struggling with DOS fc utility but I'd like an
output similar to:

function fred()
sequence result
>integer i
	result={}
<	for i = 1 to 10
<		if skip[i]=0 then
>	i=1
>	while i <= 10
>		if skip[i]>0 then
>			i+=skip[i]
>		else
			result&=i
>			i+=1
		end if
<	end for
>	end while
	return result
end procedure

whereby ">" lines have been added & "<" removed.

Hopefully someone out there in the Linux world has the source of
"diff" I think it is which I suspect handles this alot better than I
could starting from scratch.

Using fc I get alot of false realigns on "end if" causing the output
to be much larger than it ought to be. Raw performance is unlikely to
be an issue.

Pete