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From: Martin von Zweigbergk <martinvonz@gmail.com>
To: git@vger.kernel.org
Cc: Junio C Hamano <gitster@pobox.com>, Matt Kraai <kraai@ftbfs.org>,
	Ramsay Jones <ramsay@ramsay1.demon.co.uk>,
	Duy Nguyen <pclouds@gmail.com>, Jeff King <peff@peff.net>,
	Martin von Zweigbergk <martinvonz@gmail.com>
Subject: [PATCH v2 07/19] reset.c: extract function for updating {ORIG_,}HEAD
Date: Mon, 14 Jan 2013 21:47:39 -0800	[thread overview]
Message-ID: <1358228871-7142-8-git-send-email-martinvonz@gmail.com> (raw)
In-Reply-To: <1358228871-7142-1-git-send-email-martinvonz@gmail.com>

By extracting the code for updating the HEAD and ORIG_HEAD symbolic
references to a separate function, we declutter cmd_reset() a bit and
we make it clear that e.g. the four variables {,sha1_}{,old_}orig are
only used by this code.

Signed-off-by: Martin von Zweigbergk <martinvonz@gmail.com>
---
 builtin/reset.c | 39 +++++++++++++++++++++++----------------
 1 file changed, 23 insertions(+), 16 deletions(-)

diff --git a/builtin/reset.c b/builtin/reset.c
index d89cf4d..2187d64 100644
--- a/builtin/reset.c
+++ b/builtin/reset.c
@@ -240,16 +240,35 @@ static const char **parse_args(const char **argv, const char *prefix, const char
 	return argv[0] ? get_pathspec(prefix, argv) : NULL;
 }
 
+static int update_refs(const char *rev, const unsigned char *sha1)
+{
+	int update_ref_status;
+	struct strbuf msg = STRBUF_INIT;
+	unsigned char *orig = NULL, sha1_orig[20],
+		*old_orig = NULL, sha1_old_orig[20];
+
+	if (!get_sha1("ORIG_HEAD", sha1_old_orig))
+		old_orig = sha1_old_orig;
+	if (!get_sha1("HEAD", sha1_orig)) {
+		orig = sha1_orig;
+		set_reflog_message(&msg, "updating ORIG_HEAD", NULL);
+		update_ref(msg.buf, "ORIG_HEAD", orig, old_orig, 0, MSG_ON_ERR);
+	} else if (old_orig)
+		delete_ref("ORIG_HEAD", old_orig, 0);
+	set_reflog_message(&msg, "updating HEAD", rev);
+	update_ref_status = update_ref(msg.buf, "HEAD", sha1, orig, 0, MSG_ON_ERR);
+	strbuf_release(&msg);
+	return update_ref_status;
+}
+
 int cmd_reset(int argc, const char **argv, const char *prefix)
 {
 	int reset_type = NONE, update_ref_status = 0, quiet = 0;
 	int patch_mode = 0;
 	const char *rev;
-	unsigned char sha1[20], *orig = NULL, sha1_orig[20],
-				*old_orig = NULL, sha1_old_orig[20];
+	unsigned char sha1[20];
 	const char **pathspec = NULL;
 	struct commit *commit;
-	struct strbuf msg = STRBUF_INIT;
 	const struct option options[] = {
 		OPT__QUIET(&quiet, N_("be quiet, only report errors")),
 		OPT_SET_INT(0, "mixed", &reset_type,
@@ -333,17 +352,7 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
 
 	/* Any resets update HEAD to the head being switched to,
 	 * saving the previous head in ORIG_HEAD before. */
-	if (!get_sha1("ORIG_HEAD", sha1_old_orig))
-		old_orig = sha1_old_orig;
-	if (!get_sha1("HEAD", sha1_orig)) {
-		orig = sha1_orig;
-		set_reflog_message(&msg, "updating ORIG_HEAD", NULL);
-		update_ref(msg.buf, "ORIG_HEAD", orig, old_orig, 0, MSG_ON_ERR);
-	}
-	else if (old_orig)
-		delete_ref("ORIG_HEAD", old_orig, 0);
-	set_reflog_message(&msg, "updating HEAD", rev);
-	update_ref_status = update_ref(msg.buf, "HEAD", sha1, orig, 0, MSG_ON_ERR);
+	update_ref_status = update_refs(rev, sha1);
 
 	switch (reset_type) {
 	case HARD:
@@ -360,7 +369,5 @@ int cmd_reset(int argc, const char **argv, const char *prefix)
 
 	remove_branch_state();
 
-	strbuf_release(&msg);
-
 	return update_ref_status;
 }
-- 
1.8.1.1.454.gce43f05

  parent reply	other threads:[~2013-01-15  5:55 UTC|newest]

Thread overview: 68+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-09  8:15 [PATCH 00/19] reset improvements Martin von Zweigbergk
2013-01-09  8:15 ` [PATCH 01/19] reset $pathspec: no need to discard index Martin von Zweigbergk
2013-01-09  8:15 ` [PATCH 02/19] reset $pathspec: exit with code 0 if successful Martin von Zweigbergk
2013-01-09  8:16 ` [PATCH 03/19] reset.c: pass pathspec around instead of (prefix, argv) pair Martin von Zweigbergk
2013-01-09 11:42   ` Matt Kraai
2013-01-09 19:26   ` Junio C Hamano
2013-01-10 11:05     ` Duy Nguyen
2013-01-10 23:09       ` Junio C Hamano
2013-01-11 11:10         ` Duy Nguyen
2013-01-09  8:16 ` [PATCH 04/19] reset: don't allow "git reset -- $pathspec" in bare repo Martin von Zweigbergk
2013-01-09 19:32   ` Junio C Hamano
2013-01-10  8:24     ` Martin von Zweigbergk
2013-01-10 18:04       ` Junio C Hamano
2013-01-09  8:16 ` [PATCH 05/19] reset.c: extract function for parsing arguments Martin von Zweigbergk
2013-01-09  8:16 ` [PATCH 06/19] reset.c: remove unnecessary variable 'i' Martin von Zweigbergk
2013-01-09 19:39   ` Junio C Hamano
2013-01-10  8:41     ` Martin von Zweigbergk
2013-01-09  8:16 ` [PATCH 07/19] reset.c: extract function for updating {ORIG,}HEAD Martin von Zweigbergk
2013-01-09 11:54   ` Matt Kraai
2013-01-09  8:16 ` [PATCH 08/19] reset.c: share call to die_if_unmerged_cache() Martin von Zweigbergk
2013-01-09 19:48   ` Junio C Hamano
2013-01-10  8:51     ` Martin von Zweigbergk
2013-01-09  8:16 ` [PATCH 09/19] reset.c: replace switch by if-else Martin von Zweigbergk
2013-01-09 19:53   ` Junio C Hamano
2013-01-11  6:35     ` Martin von Zweigbergk
2013-01-11 17:12       ` Junio C Hamano
2013-01-09  8:16 ` [PATCH 10/19] reset --keep: only write index file once Martin von Zweigbergk
2013-01-09 19:55   ` Junio C Hamano
2013-01-09  8:16 ` [PATCH 11/19] reset: avoid redundant error message Martin von Zweigbergk
2013-01-09  8:16 ` [PATCH 12/19] reset.c: move update_index_refresh() call out of read_from_tree() Martin von Zweigbergk
2013-01-09  8:16 ` [PATCH 13/19] reset.c: move lock, write and commit out of update_index_refresh() Martin von Zweigbergk
2013-01-09  8:16 ` [PATCH 14/19] reset [--mixed]: don't write index file twice Martin von Zweigbergk
2013-01-09  8:16 ` [PATCH 15/19] reset.c: finish entire cmd_reset() whether or not pathspec is given Martin von Zweigbergk
2013-01-09 19:59   ` Junio C Hamano
2013-01-09  8:16 ` [PATCH 16/19] reset [--mixed] --quiet: don't refresh index Martin von Zweigbergk
2013-01-09 17:01   ` Jeff King
2013-01-09 18:43     ` Martin von Zweigbergk
2013-01-09 19:12       ` Junio C Hamano
2013-01-09 19:38         ` Martin von Zweigbergk
2013-01-09 20:05   ` Junio C Hamano
2013-01-09  8:16 ` [PATCH 17/19] reset $sha1 $pathspec: require $sha1 only to be treeish Martin von Zweigbergk
2013-01-09 20:23   ` Junio C Hamano
2013-01-09  8:16 ` [PATCH 18/19] reset: allow reset on unborn branch Martin von Zweigbergk
2013-01-09  8:16 ` [PATCH 19/19] reset [--mixed]: use diff-based reset whether or not pathspec was given Martin von Zweigbergk
2013-01-09 20:27   ` Junio C Hamano
2013-01-15  5:47 ` [PATCH v2 00/19] reset improvements Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 01/19] reset $pathspec: no need to discard index Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 02/19] reset $pathspec: exit with code 0 if successful Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 03/19] reset.c: pass pathspec around instead of (prefix, argv) pair Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 04/19] reset: don't allow "git reset -- $pathspec" in bare repo Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 05/19] reset.c: extract function for parsing arguments Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 06/19] reset.c: remove unnecessary variable 'i' Martin von Zweigbergk
     [not found]     ` <A5E8E180685CEF45AB9E737A010799805E00DD@cdnz-ex1.corp.cubic.cub>
2013-01-15 18:36       ` Martin von Zweigbergk
2013-01-15  5:47   ` Martin von Zweigbergk [this message]
2013-01-15  5:47   ` [PATCH v2 08/19] reset.c: share call to die_if_unmerged_cache() Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 09/19] reset --keep: only write index file once Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 10/19] reset: avoid redundant error message Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 11/19] reset.c: replace switch by if-else Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 12/19] reset.c: move update_index_refresh() call out of read_from_tree() Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 13/19] reset.c: move lock, write and commit out of update_index_refresh() Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 14/19] reset [--mixed]: only write index file once Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 15/19] reset.c: finish entire cmd_reset() whether or not pathspec is given Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 16/19] reset.c: inline update_index_refresh() Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 17/19] reset $sha1 $pathspec: require $sha1 only to be treeish Martin von Zweigbergk
2013-01-16 18:00     ` [PATCH v2 17/19] fixup! " Martin von Zweigbergk
2013-01-16 18:08       ` Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 18/19] reset: allow reset on unborn branch Martin von Zweigbergk
2013-01-15  5:47   ` [PATCH v2 19/19] reset [--mixed]: use diff-based reset whether or not pathspec was given Martin von Zweigbergk

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