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From: Patrick Steinhardt <ps@pks.im>
To: git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>,
	Felipe Contreras <felipe.contreras@gmail.com>,
	Glen Choo <chooglen@google.com>,
	Jonathan Tan <jonathantanmy@google.com>,
	Jacob Keller <jacob.e.keller@intel.com>
Subject: [PATCH v5 5/9] fetch: refactor calculation of the display table width
Date: Wed, 10 May 2023 14:34:20 +0200	[thread overview]
Message-ID: <bb1a591c2f46b78eb26eb72ec677c65d10cb714c.1683721293.git.ps@pks.im> (raw)
In-Reply-To: <cover.1683721293.git.ps@pks.im>

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When displaying reference updates, we try to print the references in a
neat table. As the table's width is determined its contents we thus need
to precalculate the overall width before we can start printing updated
references.

The calculation is driven by `display_state_init()`, which invokes
`refcol_width()` for every reference that is to be printed. This split
is somewhat confusing. For one, we filter references that shall be
attributed to the overall width in both places. And second, we
needlessly recalculate the maximum line length based on the terminal
columns and display format for every reference.

Refactor the code so that the complete width calculations are neatly
contained in `refcol_width()`.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
---
 builtin/fetch.c | 81 ++++++++++++++++++++++---------------------------
 1 file changed, 37 insertions(+), 44 deletions(-)

diff --git a/builtin/fetch.c b/builtin/fetch.c
index 6aecf549e8..007eb3693d 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -751,40 +751,51 @@ static int s_update_ref(const char *action,
 	return ret;
 }
 
-static int refcol_width(const struct ref *ref, int compact_format)
+static int refcol_width(const struct ref *ref_map, int compact_format)
 {
-	int max, rlen, llen, len;
+	const struct ref *ref;
+	int max, width = 10;
 
-	/* uptodate lines are only shown on high verbosity level */
-	if (verbosity <= 0 && oideq(&ref->peer_ref->old_oid, &ref->old_oid))
-		return 0;
-
-	max    = term_columns();
-	rlen   = utf8_strwidth(prettify_refname(ref->name));
-
-	llen   = utf8_strwidth(prettify_refname(ref->peer_ref->name));
-
-	/*
-	 * rough estimation to see if the output line is too long and
-	 * should not be counted (we can't do precise calculation
-	 * anyway because we don't know if the error explanation part
-	 * will be printed in update_local_ref)
-	 */
-	if (compact_format) {
-		llen = 0;
+	max = term_columns();
+	if (compact_format)
 		max = max * 2 / 3;
-	}
-	len = 21 /* flag and summary */ + rlen + 4 /* -> */ + llen;
-	if (len >= max)
-		return 0;
 
-	return rlen;
+	for (ref = ref_map; ref; ref = ref->next) {
+		int rlen, llen = 0, len;
+
+		if (ref->status == REF_STATUS_REJECT_SHALLOW ||
+		    !ref->peer_ref ||
+		    !strcmp(ref->name, "HEAD"))
+			continue;
+
+		/* uptodate lines are only shown on high verbosity level */
+		if (verbosity <= 0 && oideq(&ref->peer_ref->old_oid, &ref->old_oid))
+			continue;
+
+		rlen = utf8_strwidth(prettify_refname(ref->name));
+		if (!compact_format)
+			llen = utf8_strwidth(prettify_refname(ref->peer_ref->name));
+
+		/*
+		 * rough estimation to see if the output line is too long and
+		 * should not be counted (we can't do precise calculation
+		 * anyway because we don't know if the error explanation part
+		 * will be printed in update_local_ref)
+		 */
+		len = 21 /* flag and summary */ + rlen + 4 /* -> */ + llen;
+		if (len >= max)
+			continue;
+
+		if (width < rlen)
+			width = rlen;
+	}
+
+	return width;
 }
 
 static void display_state_init(struct display_state *display_state, struct ref *ref_map,
 			       const char *raw_url)
 {
-	struct ref *rm;
 	const char *format = "full";
 	int i;
 
@@ -816,25 +827,7 @@ static void display_state_init(struct display_state *display_state, struct ref *
 		die(_("invalid value for '%s': '%s'"),
 		    "fetch.output", format);
 
-	display_state->refcol_width = 10;
-	for (rm = ref_map; rm; rm = rm->next) {
-		int width;
-
-		if (rm->status == REF_STATUS_REJECT_SHALLOW ||
-		    !rm->peer_ref ||
-		    !strcmp(rm->name, "HEAD"))
-			continue;
-
-		width = refcol_width(rm, display_state->compact_format);
-
-		/*
-		 * Not precise calculation for compact mode because '*' can
-		 * appear on the left hand side of '->' and shrink the column
-		 * back.
-		 */
-		if (display_state->refcol_width < width)
-			display_state->refcol_width = width;
-	}
+	display_state->refcol_width = refcol_width(ref_map, display_state->compact_format);
 }
 
 static void display_state_release(struct display_state *display_state)
-- 
2.40.1


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  parent reply	other threads:[~2023-05-10 12:34 UTC|newest]

Thread overview: 120+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-04-19 12:31 [PATCH 0/8] fetch: introduce machine-parseable output Patrick Steinhardt
2023-04-19 12:31 ` [PATCH 1/8] fetch: split out tests for output format Patrick Steinhardt
2023-04-19 12:31 ` [PATCH 2/8] fetch: add a test to exercise invalid output formats Patrick Steinhardt
2023-04-19 12:31 ` [PATCH 3/8] fetch: fix missing from-reference when fetching HEAD:foo Patrick Steinhardt
2023-04-26 19:20   ` Jacob Keller
2023-04-27 10:58     ` Patrick Steinhardt
2023-04-26 19:21   ` Jacob Keller
2023-04-27 10:58     ` Patrick Steinhardt
2023-04-26 19:25   ` Glen Choo
2023-04-27 10:58     ` Patrick Steinhardt
2023-04-19 12:31 ` [PATCH 4/8] fetch: introduce `display_format` enum Patrick Steinhardt
2023-04-19 12:31 ` [PATCH 5/8] fetch: move display format parsing into main function Patrick Steinhardt
2023-04-19 12:31 ` [PATCH 6/8] fetch: move option related variables " Patrick Steinhardt
2023-04-19 12:31 ` [PATCH 7/8] fetch: introduce new `--output-format` option Patrick Steinhardt
2023-04-26 19:40   ` Glen Choo
2023-04-27 10:58     ` Patrick Steinhardt
2023-04-19 12:31 ` [PATCH 8/8] fetch: introduce machine-parseable "porcelain" output format Patrick Steinhardt
2023-04-26 19:52   ` Glen Choo
2023-04-27 10:58     ` Patrick Steinhardt
2023-04-27 23:20       ` Glen Choo
2023-04-28  8:51         ` Patrick Steinhardt
2023-04-28 17:20           ` Glen Choo
2023-05-02 20:55       ` Felipe Contreras
2023-04-24 20:17 ` [PATCH 0/8] fetch: introduce machine-parseable output Felipe Contreras
2023-04-25  9:58   ` Patrick Steinhardt
2023-04-26 19:14     ` Jacob Keller
2023-04-26 20:23       ` Junio C Hamano
2023-04-26 20:30         ` Jacob Keller
2023-04-27 10:58         ` Patrick Steinhardt
2023-04-27 19:46           ` Jacob Keller
2023-04-27 22:49         ` Glen Choo
2023-04-26 20:24       ` Junio C Hamano
2023-04-26 18:54 ` Glen Choo
2023-04-26 21:14   ` Glen Choo
2023-04-26 19:17 ` Jacob Keller
2023-04-27 11:13 ` [PATCH v2 " Patrick Steinhardt
2023-04-27 11:13   ` [PATCH v2 1/8] fetch: split out tests for output format Patrick Steinhardt
2023-04-29 17:34     ` SZEDER Gábor
2023-05-03 11:21       ` Patrick Steinhardt
2023-04-27 11:13   ` [PATCH v2 2/8] fetch: add a test to exercise invalid output formats Patrick Steinhardt
2023-04-27 11:13   ` [PATCH v2 3/8] fetch: fix missing from-reference when fetching HEAD:foo Patrick Steinhardt
2023-04-27 17:26     ` Glen Choo
2023-04-27 19:49     ` Jacob Keller
2023-04-27 11:13   ` [PATCH v2 4/8] fetch: introduce `display_format` enum Patrick Steinhardt
2023-04-27 11:13   ` [PATCH v2 5/8] fetch: move display format parsing into main function Patrick Steinhardt
2023-04-27 11:13   ` [PATCH v2 6/8] fetch: move option related variables " Patrick Steinhardt
2023-04-27 21:52     ` Junio C Hamano
2023-04-27 11:13   ` [PATCH v2 7/8] fetch: introduce new `--output-format` option Patrick Steinhardt
2023-04-27 22:01     ` Junio C Hamano
2023-04-28 22:03       ` Glen Choo
2023-05-03  9:12         ` Patrick Steinhardt
2023-04-28 22:31     ` Glen Choo
2023-05-03  9:43       ` Patrick Steinhardt
2023-05-03 11:36         ` Patrick Steinhardt
2023-04-27 11:13   ` [PATCH v2 8/8] fetch: introduce machine-parseable "porcelain" output format Patrick Steinhardt
2023-04-27 19:52     ` Jacob Keller
2023-04-28 22:42     ` Glen Choo
2023-05-03 11:34 ` [PATCH v3 0/8] fetch: introduce machine-parseable output Patrick Steinhardt
2023-05-03 11:34   ` [PATCH v3 1/8] fetch: fix `--no-recurse-submodules` with multi-remote fetches Patrick Steinhardt
2023-05-08 22:51     ` Glen Choo
2023-05-09 12:41       ` Patrick Steinhardt
2023-05-03 11:34   ` [PATCH v3 2/8] fetch: split out tests for output format Patrick Steinhardt
2023-05-03 11:34   ` [PATCH v3 3/8] fetch: add a test to exercise invalid output formats Patrick Steinhardt
2023-05-03 11:34   ` [PATCH v3 4/8] fetch: fix missing from-reference when fetching HEAD:foo Patrick Steinhardt
2023-05-03 11:34   ` [PATCH v3 5/8] fetch: introduce `display_format` enum Patrick Steinhardt
2023-05-03 11:34   ` [PATCH v3 6/8] fetch: move display format parsing into main function Patrick Steinhardt
2023-05-03 11:34   ` [PATCH v3 7/8] fetch: move option related variables " Patrick Steinhardt
2023-05-03 11:34   ` [PATCH v3 8/8] fetch: introduce machine-parseable "porcelain" output format Patrick Steinhardt
2023-05-08 23:42     ` Glen Choo
2023-05-09 12:41       ` Patrick Steinhardt
2023-05-09  0:03     ` Glen Choo
2023-05-03 16:48   ` [PATCH v3 0/8] fetch: introduce machine-parseable output Junio C Hamano
2023-05-03 16:53     ` Junio C Hamano
2023-05-04  7:57       ` Patrick Steinhardt
2023-05-09  0:06   ` Glen Choo
2023-05-09 12:42     ` Patrick Steinhardt
2023-05-09 13:01 ` [PATCH v4 " Patrick Steinhardt
2023-05-09 13:02   ` [PATCH v4 1/8] fetch: fix `--no-recurse-submodules` with multi-remote fetches Patrick Steinhardt
2023-05-09 17:49     ` Junio C Hamano
2023-05-09 18:27       ` Glen Choo
2023-05-10 12:34         ` Patrick Steinhardt
2023-05-09 13:02   ` [PATCH v4 2/8] fetch: split out tests for output format Patrick Steinhardt
2023-05-09 13:02   ` [PATCH v4 3/8] fetch: add a test to exercise invalid output formats Patrick Steinhardt
2023-05-09 17:58     ` Junio C Hamano
2023-05-10 12:34       ` Patrick Steinhardt
2023-05-09 13:02   ` [PATCH v4 4/8] fetch: fix missing from-reference when fetching HEAD:foo Patrick Steinhardt
2023-05-09 19:28     ` Junio C Hamano
2023-05-10 12:34       ` Patrick Steinhardt
2023-05-09 13:02   ` [PATCH v4 5/8] fetch: introduce `display_format` enum Patrick Steinhardt
2023-05-09 20:19     ` Junio C Hamano
2023-05-10 12:35       ` Patrick Steinhardt
2023-05-09 13:02   ` [PATCH v4 6/8] fetch: move display format parsing into main function Patrick Steinhardt
2023-05-09 20:35     ` Junio C Hamano
2023-05-09 22:30     ` Glen Choo
2023-05-10 12:35       ` Patrick Steinhardt
2023-05-09 13:02   ` [PATCH v4 7/8] fetch: move option related variables " Patrick Steinhardt
2023-05-09 13:02   ` [PATCH v4 8/8] fetch: introduce machine-parseable "porcelain" output format Patrick Steinhardt
2023-05-09 20:43     ` Junio C Hamano
2023-05-10 12:35       ` Patrick Steinhardt
2023-05-10 12:33 ` [PATCH v5 0/9] fetch: introduce machine-parseable output Patrick Steinhardt
2023-05-10 12:34   ` [PATCH v5 1/9] fetch: fix `--no-recurse-submodules` with multi-remote fetches Patrick Steinhardt
2023-05-10 12:34   ` [PATCH v5 2/9] fetch: split out tests for output format Patrick Steinhardt
2023-05-10 12:34   ` [PATCH v5 3/9] fetch: add a test to exercise invalid output formats Patrick Steinhardt
2023-05-10 12:34   ` [PATCH v5 4/9] fetch: print left-hand side when fetching HEAD:foo Patrick Steinhardt
2023-05-12  0:16     ` Glen Choo
2023-05-13 16:59     ` Jeff King
2023-05-15  5:15       ` Patrick Steinhardt
2023-05-10 12:34   ` Patrick Steinhardt [this message]
2023-05-12  0:49     ` [PATCH v5 5/9] fetch: refactor calculation of the display table width Glen Choo
2023-05-10 12:34   ` [PATCH v5 6/9] fetch: introduce `display_format` enum Patrick Steinhardt
2023-05-10 12:34   ` [PATCH v5 7/9] fetch: lift up parsing of "fetch.output" config variable Patrick Steinhardt
2023-05-10 12:34   ` [PATCH v5 8/9] fetch: move option related variables into main function Patrick Steinhardt
2023-05-10 12:34   ` [PATCH v5 9/9] fetch: introduce machine-parseable "porcelain" output format Patrick Steinhardt
2023-05-12  1:02     ` Glen Choo
2023-05-10 18:05   ` [PATCH v5 0/9] fetch: introduce machine-parseable output Junio C Hamano
2023-05-11 11:05     ` Patrick Steinhardt
2023-05-11 16:53       ` Junio C Hamano
2023-05-11 17:24       ` Felipe Contreras
2023-05-12  1:09   ` Glen Choo
2023-05-12  7:16     ` Patrick Steinhardt

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