From: Stefan Beller <sbeller@google.com>
To: jacob.keller@gmail.com
Cc: git@vger.kernel.org, gitster@pobox.com, peff@peff.net,
Jens.Lehmann@web.de, davidel@xmailserver.org,
Jacob Keller <jacob.e.keller@intel.com>,
Stefan Beller <sbeller@google.com>
Subject: [PATCH 1/2] xdiff: add recs_match helper function
Date: Fri, 15 Apr 2016 16:01:45 -0700 [thread overview]
Message-ID: <1460761306-18794-2-git-send-email-sbeller@google.com> (raw)
In-Reply-To: <1460761306-18794-1-git-send-email-sbeller@google.com>
From: Jacob Keller <jacob.keller@gmail.com>
It is a common pattern in xdl_change_compact to check that hashes and
strings match. The resulting code to perform this change causes very
long lines and makes it hard to follow the intention. Introduce a helper
function recs_match which performs both checks to increase
code readability.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Stefan Beller <sbeller@google.com>
---
xdiff/xdiffi.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/xdiff/xdiffi.c b/xdiff/xdiffi.c
index 2358a2d..748eeb9 100644
--- a/xdiff/xdiffi.c
+++ b/xdiff/xdiffi.c
@@ -400,6 +400,14 @@ static xdchange_t *xdl_add_change(xdchange_t *xscr, long i1, long i2, long chg1,
}
+static int recs_match(xrecord_t **recs, long ixs, long ix, long flags)
+{
+ return (recs[ixs]->ha == recs[ix]->ha &&
+ xdl_recmatch(recs[ixs]->ptr, recs[ixs]->size,
+ recs[ix]->ptr, recs[ix]->size,
+ flags));
+}
+
int xdl_change_compact(xdfile_t *xdf, xdfile_t *xdfo, long flags) {
long ix, ixo, ixs, ixref, grpsiz, nrec = xdf->nrec;
char *rchg = xdf->rchg, *rchgo = xdfo->rchg;
@@ -442,8 +450,7 @@ int xdl_change_compact(xdfile_t *xdf, xdfile_t *xdfo, long flags) {
* the last line of the current change group, shift backward
* the group.
*/
- while (ixs > 0 && recs[ixs - 1]->ha == recs[ix - 1]->ha &&
- xdl_recmatch(recs[ixs - 1]->ptr, recs[ixs - 1]->size, recs[ix - 1]->ptr, recs[ix - 1]->size, flags)) {
+ while (ixs > 0 && recs_match(recs, ixs - 1, ix - 1, flags)) {
rchg[--ixs] = 1;
rchg[--ix] = 0;
@@ -470,8 +477,7 @@ int xdl_change_compact(xdfile_t *xdf, xdfile_t *xdfo, long flags) {
* the line next of the current change group, shift forward
* the group.
*/
- while (ix < nrec && recs[ixs]->ha == recs[ix]->ha &&
- xdl_recmatch(recs[ixs]->ptr, recs[ixs]->size, recs[ix]->ptr, recs[ix]->size, flags)) {
+ while (ix < nrec && recs_match(recs, ixs, ix, flags)) {
rchg[ixs++] = 0;
rchg[ix++] = 1;
--
2.8.1.189.gd13d43c
next prev parent reply other threads:[~2016-04-15 23:01 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-15 23:01 [RFC PATCH, WAS: "weird diff output?" v3a 0/2] implement shortest line diff chunk heuristic Stefan Beller
2016-04-15 23:01 ` Stefan Beller [this message]
2016-04-15 23:01 ` [PATCH 2/2] xdiff: implement empty line " Stefan Beller
2016-04-15 23:05 ` Jacob Keller
2016-04-15 23:32 ` Jacob Keller
2016-04-15 23:45 ` Stefan Beller
2016-04-16 0:49 ` Junio C Hamano
2016-04-16 0:59 ` Stefan Beller
2016-04-16 1:07 ` Jacob Keller
2016-04-18 19:22 ` Junio C Hamano
2016-04-18 19:33 ` Stefan Beller
-- strict thread matches above, loose matches on Subject: below --
2016-04-18 21:12 [PATCH 0/2 v4] " Stefan Beller
2016-04-18 21:12 ` [PATCH 1/2] xdiff: add recs_match helper function Stefan Beller
2016-04-19 15:21 [PATCHv5 0/2] xdiff: implement empty line chunk heuristic Stefan Beller
2016-04-19 15:21 ` [PATCH 1/2] xdiff: add recs_match helper function Stefan Beller
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