On Thu, 28 Jan 2016 16:48:22 +0100 Markus Wichmann <nullp...@gmx.net> wrote:
> The two files to be compared are loaded into memory,
> whereby each line is annotated with its line number
> (actually, that's a lie, busybox only saves a hash of the
> line and really, really hopes, there are no collisions,
> but hush). Then both files are sorted by line content
> first and line number second. Then a mapping is
> calculated, that maps each line of the old file to its
> corresponding line in the new one, if any. This is done
> by merging the two files, i. e. (pseudocode)
>
> memset(map, -1, sizeof map)
> new file pointer = first new line
> for every old line:
> while (*new file pointer < old line)
> new file pointer ++
> if (*new file pointer == old line)
> map[old line number] = new line number
I'm working on implementing it. But there is something
wrong with my code. Would you mind reviewing the
implementation (one function)?
https://github.com/maandree/sbase/commit/8c056a724480f19890e01d66c8c13254e2054782#diff-ab603fc6eadf618560316097522fe585R260
pgp1SDNewEE3C.pgp
Description: OpenPGP digital signature
