| commit | 611e42a5980a3a9f8bb3b1b49c1abde63c7a191e | [log] [tgz] |
|---|---|---|
| author | Jeff King <peff@peff.net> | Fri Nov 02 02:35:01 2018 -0400 |
| committer | Junio C Hamano <gitster@pobox.com> | Fri Nov 02 20:43:02 2018 +0900 |
| tree | 3c3e5ca8edb25cbb1ff14478c3e869d687b5a19e | |
| parent | cae598d9980661a978e2df4fb338518f7bf09572 [diff] |
xdiff: provide a separate emit callback for hunks
The xdiff library always emits hunk header lines to our callbacks as
formatted strings like "@@ -a,b +c,d @@\n". This is convenient if we're
going to output a diff, but less so if we actually need to compute using
those numbers, which requires re-parsing the line.
In preparation for moving away from this, let's teach xdiff a new
callback function which gets the broken-out hunk information. To help
callers that don't want to use this new callback, if it's NULL we'll
continue to format the hunk header into a string.
Note that this function renames the "outf" callback to "out_line", as
well. This isn't strictly necessary, but helps in two ways:
1. Now that there are two callbacks, it's nice to use more descriptive
names.
2. Many callers did not zero the emit_callback_data struct, and needed
to be modified to set ecb.out_hunk to NULL. By changing the name of
the existing struct member, that guarantees that any new callers
from in-flight topics will break the build and be examined
manually.
Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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