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From: Stefan Beller <sbeller@google.com>
To: sbeller@google.com
Cc: Johannes.Schindelin@gmx.de, git@vger.kernel.org, gitster@pobox.com
Subject: [PATCH 6/8] diff: use emit_line_0 once per line
Date: Mon, 13 Aug 2018 18:41:20 -0700	[thread overview]
Message-ID: <20180814014122.30662-7-sbeller@google.com> (raw)
In-Reply-To: <20180814014122.30662-1-sbeller@google.com>

All lines that use emit_line_0 multiple times per line, are combined
into a single call to emit_line_0, making use of the 'set' argument.

We gain a little efficiency here, as we can omit emission of color and
accompanying reset if 'len == 0'.

Signed-off-by: Stefan Beller <sbeller@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 diff.c                | 16 ++++++++--------
 t/t3206-range-diff.sh |  2 +-
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/diff.c b/diff.c
index 4ef66389282..4f430f44e64 100644
--- a/diff.c
+++ b/diff.c
@@ -656,12 +656,14 @@ static void emit_line_0(struct diff_options *o,
 			fputs(set_sign, file);
 		if (first && !nofirst)
 			fputc(first, file);
-		if (set && set != set_sign) {
-			if (set_sign)
-				fputs(reset, file);
-			fputs(set, file);
+		if (len) {
+			if (set && set != set_sign) {
+				if (set_sign)
+					fputs(reset, file);
+				fputs(set, file);
+			}
+			fwrite(line, len, 1, file);
 		}
-		fwrite(line, len, 1, file);
 		fputs(reset, file);
 	}
 	if (has_trailing_carriage_return)
@@ -1207,9 +1209,7 @@ static void emit_line_ws_markup(struct diff_options *o,
 	if (!ws && !set_sign)
 		emit_line_0(o, set, NULL, 0, reset, sign, line, len);
 	else if (!ws) {
-		/* Emit just the prefix, then the rest. */
-		emit_line_0(o, set_sign, NULL, !!set_sign, reset, sign, "", 0);
-		emit_line_0(o, set, NULL, 0, reset, 0, line, len);
+		emit_line_0(o, set_sign, set, !!set_sign, reset, sign, line, len);
 	} else if (blank_at_eof)
 		/* Blank line at EOF - paint '+' as well */
 		emit_line_0(o, ws, NULL, 0, reset, sign, line, len);
diff --git a/t/t3206-range-diff.sh b/t/t3206-range-diff.sh
index 31f6458f961..7dc7c80a1de 100755
--- a/t/t3206-range-diff.sh
+++ b/t/t3206-range-diff.sh
@@ -151,7 +151,7 @@ test_expect_success 'dual-coloring' '
 	:         s/4/A/<RESET>
 	:     <RESET>
 	:    <REVERSE><GREEN>+<RESET><BOLD>    Also a silly comment here!<RESET>
-	:    <REVERSE><GREEN>+<RESET><BOLD><RESET>
+	:    <REVERSE><GREEN>+<RESET>
 	:     diff --git a/file b/file<RESET>
 	:    <RED> --- a/file<RESET>
 	:    <GREEN> +++ b/file<RESET>
-- 
2.18.0.865.gffc8e1a3cd6-goog


  parent reply	other threads:[~2018-08-14  1:41 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-08-10 22:34 [PATCH 0/8] Resending sb/range-diff-colors Stefan Beller
2018-08-10 22:34 ` [PATCH 1/8] test_decode_color: understand FAINT and ITALIC Stefan Beller
2018-08-10 22:34 ` [PATCH 2/8] t3206: add color test for range-diff --dual-color Stefan Beller
2018-08-13 12:05   ` Johannes Schindelin
2018-08-13 18:30     ` Stefan Beller
2018-08-10 22:34 ` [PATCH 3/8] diff.c: simplify caller of emit_line_0 Stefan Beller
2018-08-13 12:07   ` Johannes Schindelin
2018-08-10 22:34 ` [PATCH 4/8] diff.c: reorder arguments for emit_line_ws_markup Stefan Beller
2018-08-13 12:09   ` Johannes Schindelin
2018-08-10 22:34 ` [PATCH 5/8] diff.c: add set_sign to emit_line_0 Stefan Beller
2018-08-13 12:16   ` Johannes Schindelin
2018-08-13 23:42     ` Stefan Beller
2018-08-10 22:34 ` [PATCH 6/8] diff: use emit_line_0 once per line Stefan Beller
2018-08-13 12:22   ` Johannes Schindelin
2018-08-10 22:34 ` [PATCH 7/8] diff.c: compute reverse locally in emit_line_0 Stefan Beller
2018-08-13 12:26   ` Johannes Schindelin
2018-08-13 19:00     ` Stefan Beller
2018-08-10 22:34 ` [PATCH 8/8] diff.c: rewrite emit_line_0 more understandably Stefan Beller
2018-08-13 12:42   ` Johannes Schindelin
2018-08-13 18:57     ` Stefan Beller
2018-08-13 23:36 ` [PATCH 0/8] Resending sb/range-diff-colors Stefan Beller
2018-08-14  1:41 ` [PATCHv2 " Stefan Beller
2018-08-14  1:41   ` [PATCH 1/8] test_decode_color: understand FAINT and ITALIC Stefan Beller
2018-08-14  1:41   ` [PATCH 2/8] t3206: add color test for range-diff --dual-color Stefan Beller
2018-08-14  1:41   ` [PATCH 3/8] diff.c: simplify caller of emit_line_0 Stefan Beller
2018-08-14  1:41   ` [PATCH 4/8] diff.c: reorder arguments for emit_line_ws_markup Stefan Beller
2018-08-14  1:41   ` [PATCH 5/8] diff.c: add set_sign to emit_line_0 Stefan Beller
2018-08-14  1:41   ` Stefan Beller [this message]
2018-08-14  1:41   ` [PATCH 7/8] diff.c: omit check for line prefix in emit_line_0 Stefan Beller
2018-08-14  1:41   ` [PATCH 8/8] diff.c: rewrite emit_line_0 more understandably Stefan Beller
2018-08-14 15:05   ` [PATCHv2 0/8] Resending sb/range-diff-colors Johannes Schindelin
2018-08-14 16:45     ` Stefan Beller
  -- strict thread matches above, loose matches on Subject: below --
2018-07-28  3:04 [PATCH 0/8] Add color test for range-diff, simplify diff.c Stefan Beller
2018-07-28  3:04 ` [PATCH 6/8] diff: use emit_line_0 once per line Stefan Beller
2018-07-31  0:31 ` [PATCHv2 0/8] Add color test for range-diff, simplify diff.c Stefan Beller
2018-07-31  0:31   ` [PATCH 6/8] diff: use emit_line_0 once per line Stefan Beller

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