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From: Phillip Wood <phillip.wood@talktalk.net>
To: Git Mailing List <git@vger.kernel.org>
Cc: Johannes Schindelin <Johannes.Schindelin@gmx.de>,
	Junio C Hamano <gitster@pobox.com>,
	Phillip Wood <phillip.wood@dunelm.org.uk>
Subject: [PATCH v1 2/8] Add a function to update HEAD after creating a commit
Date: Mon,  6 Nov 2017 11:27:03 +0000	[thread overview]
Message-ID: <20171106112709.2121-3-phillip.wood@talktalk.net> (raw)
In-Reply-To: <20171106112709.2121-1-phillip.wood@talktalk.net>

From: Phillip Wood <phillip.wood@dunelm.org.uk>

Add update_head() based on the code that updates HEAD after committing
in builtin/commit.c that can be called by 'git commit' and other
commands.

Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk>
---
 builtin/commit.c | 19 +------------------
 sequencer.c      | 38 +++++++++++++++++++++++++++++++++++++-
 sequencer.h      |  3 +++
 3 files changed, 41 insertions(+), 19 deletions(-)

diff --git a/builtin/commit.c b/builtin/commit.c
index fab512b668af07a1fa927f713eca71c9f783b422..e82754f1fb9f80b8e5b83546d2b2b010daaba522 100644
--- a/builtin/commit.c
+++ b/builtin/commit.c
@@ -1606,13 +1606,11 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 	struct strbuf sb = STRBUF_INIT;
 	struct strbuf author_ident = STRBUF_INIT;
 	const char *index_file, *reflog_msg;
-	char *nl;
 	struct object_id oid;
 	struct commit_list *parents = NULL;
 	struct stat statbuf;
 	struct commit *current_head = NULL;
 	struct commit_extra_header *extra = NULL;
-	struct ref_transaction *transaction;
 	struct strbuf err = STRBUF_INIT;
 
 	if (argc == 2 && !strcmp(argv[1], "-h"))
@@ -1735,25 +1733,10 @@ int cmd_commit(int argc, const char **argv, const char *prefix)
 	strbuf_release(&author_ident);
 	free_commit_extra_headers(extra);
 
-	nl = strchr(sb.buf, '\n');
-	if (nl)
-		strbuf_setlen(&sb, nl + 1 - sb.buf);
-	else
-		strbuf_addch(&sb, '\n');
-	strbuf_insert(&sb, 0, reflog_msg, strlen(reflog_msg));
-	strbuf_insert(&sb, strlen(reflog_msg), ": ", 2);
-
-	transaction = ref_transaction_begin(&err);
-	if (!transaction ||
-	    ref_transaction_update(transaction, "HEAD", &oid,
-				   current_head
-				   ? &current_head->object.oid : &null_oid,
-				   0, sb.buf, &err) ||
-	    ref_transaction_commit(transaction, &err)) {
+	if (update_head(current_head, &oid, reflog_msg, &sb, &err)) {
 		rollback_index_files();
 		die("%s", err.buf);
 	}
-	ref_transaction_free(transaction);
 
 	unlink(git_path_cherry_pick_head());
 	unlink(git_path_revert_head());
diff --git a/sequencer.c b/sequencer.c
index f4a04c913c0d60adbf78d68ca87db739c8e3a280..a85ad659114248b9b5215641cd2911bc4d02e4df 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -1,10 +1,10 @@
 #include "cache.h"
 #include "config.h"
 #include "lockfile.h"
-#include "sequencer.h"
 #include "dir.h"
 #include "object.h"
 #include "commit.h"
+#include "sequencer.h"
 #include "tag.h"
 #include "run-command.h"
 #include "exec_cmd.h"
@@ -751,6 +751,42 @@ int template_untouched(const struct strbuf *sb, const char *template_file,
 	return rest_is_empty(sb, start - sb->buf);
 }
 
+int update_head(const struct commit *old_head, const struct object_id *new_head,
+		const char *action, const struct strbuf *msg,
+		struct strbuf *err)
+{
+	struct ref_transaction *transaction;
+	struct strbuf sb = STRBUF_INIT;
+	const char *nl;
+	int ret = 0;
+
+	if (action) {
+		strbuf_addstr(&sb, action);
+		strbuf_addstr(&sb, ": ");
+	}
+
+	nl = strchr(msg->buf, '\n');
+	if (nl) {
+		strbuf_add(&sb, msg->buf, nl + 1 - msg->buf);
+	} else {
+		strbuf_addbuf(&sb, msg);
+		strbuf_addch(&sb, '\n');
+	}
+
+	transaction = ref_transaction_begin(err);
+	if (!transaction ||
+	    ref_transaction_update(transaction, "HEAD", new_head,
+				   old_head ? &old_head->object.oid : &null_oid,
+				   0, sb.buf, err) ||
+	    ref_transaction_commit(transaction, err)) {
+		ret = -1;
+	}
+	ref_transaction_free(transaction);
+	strbuf_release(&sb);
+
+	return ret;
+}
+
 static int is_original_commit_empty(struct commit *commit)
 {
 	const struct object_id *ptree_oid;
diff --git a/sequencer.h b/sequencer.h
index 65a4b0c25185d7ad5115035abb766d1b95df9a62..1db06caea35bed556dfaabca1c6be8a80857ed5e 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -68,4 +68,7 @@ enum cleanup_mode {
 int message_is_empty(const struct strbuf *sb, enum cleanup_mode cleanup_mode);
 int template_untouched(const struct strbuf *sb, const char *template_file,
 		       enum cleanup_mode cleanup_mode);
+int update_head(const struct commit *old_head, const struct object_id *new_head,
+		const char* action, const struct strbuf *msg,
+		struct strbuf *err);
 #endif
-- 
2.14.3


  parent reply	other threads:[~2017-11-06 11:34 UTC|newest]

Thread overview: 120+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-25 10:10 [RFC PATCH 0/8] sequencer: dont't fork git commit Phillip Wood
2017-09-25 10:10 ` [RFC PATCH 1/8] commit: move empty message checks to libgit Phillip Wood
2017-09-25 10:10 ` [RFC PATCH 2/8] commit: move code to update HEAD " Phillip Wood
2017-10-07  9:54   ` Junio C Hamano
2017-10-24 10:01     ` Phillip Wood
2017-10-24 12:41       ` Junio C Hamano
2017-09-25 10:10 ` [RFC PATCH 3/8] sequencer: refactor update_head() Phillip Wood
2017-09-25 10:10 ` [RFC PATCH 4/8] commit: move post-rewrite code to libgit Phillip Wood
2017-09-25 10:10 ` [RFC PATCH 5/8] commit: move print_commit_summary() " Phillip Wood
2017-09-25 10:10 ` [RFC PATCH 6/8] sequencer: simplify adding Signed-off-by: trailer Phillip Wood
2017-09-25 10:10 ` [RFC PATCH 7/8] sequencer: load commit related config Phillip Wood
2017-09-25 10:10 ` [RFC PATCH 8/8] sequencer: try to commit without forking 'git commit' Phillip Wood
2017-11-06 11:27 ` [PATCH v1 0/8] sequencer: dont't fork git commit Phillip Wood
2017-11-06 11:27   ` [PATCH v1 1/8] commit: move empty message checks to libgit Phillip Wood
2017-11-07  0:43     ` Johannes Schindelin
2017-11-07 14:24       ` Phillip Wood
2017-11-06 11:27   ` Phillip Wood [this message]
2017-11-07  2:56     ` [PATCH v1 2/8] Add a function to update HEAD after creating a commit Junio C Hamano
2017-11-07  3:02       ` Johannes Schindelin
2017-11-07 14:26         ` Phillip Wood
2017-11-06 11:27   ` [PATCH v1 3/8] commit: move post-rewrite code to libgit Phillip Wood
2017-11-07  3:03     ` Junio C Hamano
2017-11-07 14:28       ` Phillip Wood
2017-11-06 11:27   ` [PATCH v1 4/8] commit: move print_commit_summary() " Phillip Wood
2017-11-07  3:38     ` Junio C Hamano
2017-11-07 14:32       ` Phillip Wood
2017-11-08  1:04         ` Junio C Hamano
2017-11-06 11:27   ` [PATCH v1 5/8] sequencer: don't die in print_commit_summary() Phillip Wood
2017-11-07  4:18     ` Junio C Hamano
2017-11-07 10:24       ` Johannes Schindelin
2017-11-07 15:13       ` Junio C Hamano
2017-11-10 14:53         ` Phillip Wood
2017-11-10 18:05           ` Junio C Hamano
2017-11-13 11:11             ` Phillip Wood
2017-11-06 11:27   ` [PATCH v1 6/8] sequencer: simplify adding Signed-off-by: trailer Phillip Wood
2017-11-07  0:52     ` Johannes Schindelin
2017-11-07  4:52     ` Junio C Hamano
2017-11-07 14:46       ` Phillip Wood
2017-11-06 11:27   ` [PATCH v1 7/8] sequencer: load commit related config Phillip Wood
2017-11-07  1:02     ` Johannes Schindelin
2017-11-07 10:50       ` Phillip Wood
2017-11-06 11:27   ` [PATCH v1 8/8] sequencer: try to commit without forking 'git commit' Phillip Wood
2017-11-07  1:36     ` Johannes Schindelin
2017-11-07 11:16       ` Phillip Wood
2017-11-07 14:09         ` Johannes Schindelin
2017-11-10 11:09 ` [PATCH v2 0/9] sequencer: dont't fork git commit Phillip Wood
2017-11-10 11:09   ` [PATCH v2 1/9] t3404: check intermediate squash messages Phillip Wood
2017-11-10 11:09   ` [PATCH v2 2/9] commit: move empty message checks to libgit Phillip Wood
2017-11-10 18:51     ` Ramsay Jones
2017-11-13 11:08       ` Phillip Wood
2017-11-10 11:09   ` [PATCH v2 3/9] Add a function to update HEAD after creating a commit Phillip Wood
2017-11-10 18:36     ` Junio C Hamano
2017-11-13 11:25       ` Phillip Wood
2017-11-10 11:09   ` [PATCH v2 4/9] commit: move post-rewrite code to libgit Phillip Wood
2017-11-10 11:09   ` [PATCH v2 5/9] commit: move print_commit_summary() " Phillip Wood
2017-11-10 11:09   ` [PATCH v2 6/9] sequencer: don't die in print_commit_summary() Phillip Wood
2017-11-10 11:09   ` [PATCH v2 7/9] sequencer: simplify adding Signed-off-by: trailer Phillip Wood
2017-11-10 11:09   ` [PATCH v2 8/9] sequencer: load commit related config Phillip Wood
2017-11-10 11:09   ` [PATCH v2 9/9] sequencer: try to commit without forking 'git commit' Phillip Wood
2017-11-10 19:21   ` [PATCH v2 0/9] sequencer: dont't fork git commit Junio C Hamano
2017-11-13 11:24     ` Phillip Wood
2017-11-14  1:15       ` Junio C Hamano
2017-11-17 11:34 ` [PATCH v3 0/8] sequencer: don't " Phillip Wood
2017-11-17 11:34   ` [PATCH v3 1/8] t3404: check intermediate squash messages Phillip Wood
2017-11-17 11:34   ` [PATCH v3 2/8] commit: move empty message checks to libgit Phillip Wood
2017-11-17 11:34   ` [PATCH v3 3/8] Add a function to update HEAD after creating a commit Phillip Wood
2017-11-17 11:34   ` [PATCH v3 4/8] commit: move post-rewrite code to libgit Phillip Wood
2017-11-17 11:34   ` [PATCH v3 5/8] commit: move print_commit_summary() " Phillip Wood
2017-11-17 11:34   ` [PATCH v3 6/8] sequencer: simplify adding Signed-off-by: trailer Phillip Wood
2017-11-17 11:34   ` [PATCH v3 7/8] sequencer: load commit related config Phillip Wood
2017-11-17 11:34   ` [PATCH v3 8/8] sequencer: try to commit without forking 'git commit' Phillip Wood
2017-11-18  3:41   ` [PATCH v3 0/8] sequencer: don't fork git commit Junio C Hamano
2017-11-18  3:57     ` Junio C Hamano
2017-11-18 11:32       ` Phillip Wood
2017-11-18 14:33       ` Phillip Wood
2017-11-24 11:07 ` [PATCH v4 0/9] " Phillip Wood
2017-11-24 11:07   ` [PATCH v4 1/9] t3404: check intermediate squash messages Phillip Wood
2017-11-24 11:07   ` [PATCH v4 2/9] commit: move empty message checks to libgit Phillip Wood
2017-11-24 11:07   ` [PATCH v4 3/9] Add a function to update HEAD after creating a commit Phillip Wood
2017-11-24 11:07   ` [PATCH v4 4/9] commit: move post-rewrite code to libgit Phillip Wood
2017-11-24 11:07   ` [PATCH v4 5/9] commit: move print_commit_summary() " Phillip Wood
2017-11-24 11:07   ` [PATCH v4 6/9] sequencer: simplify adding Signed-off-by: trailer Phillip Wood
2017-11-24 11:07   ` [PATCH v4 7/9] sequencer: load commit related config Phillip Wood
2017-11-24 13:48     ` Junio C Hamano
2017-11-24 14:38       ` Phillip Wood
2017-12-04 18:30     ` Junio C Hamano
2017-12-05 11:21       ` Phillip Wood
2017-12-05 12:10         ` Phillip Wood
2017-12-09 19:05         ` Phillip Wood
2017-11-24 11:07   ` [PATCH v4 8/9] sequencer: try to commit without forking 'git commit' Phillip Wood
2017-11-24 11:07   ` [PATCH v4 9/9] t3512/t3513: remove KNOWN_FAILURE_CHERRY_PICK_SEES_EMPTY_COMMIT=1 Phillip Wood
2017-12-04 19:24     ` Stefan Beller
2017-12-05 12:13       ` Phillip Wood
2017-12-11 14:13 ` [PATCH v5 0/9] sequencer: don't fork git commit Phillip Wood
2017-12-11 14:13   ` [PATCH v5 1/9] t3404: check intermediate squash messages Phillip Wood
2017-12-11 14:13   ` [PATCH v5 2/9] commit: move empty message checks to libgit Phillip Wood
2017-12-11 14:13   ` [PATCH v5 3/9] Add a function to update HEAD after creating a commit Phillip Wood
2017-12-11 14:13   ` [PATCH v5 4/9] commit: move post-rewrite code to libgit Phillip Wood
2017-12-11 14:13   ` [PATCH v5 5/9] commit: move print_commit_summary() " Phillip Wood
2017-12-11 14:13   ` [PATCH v5 6/9] sequencer: simplify adding Signed-off-by: trailer Phillip Wood
2017-12-11 14:13   ` [PATCH v5 7/9] sequencer: load commit related config Phillip Wood
2017-12-11 18:53     ` Phillip Wood
2017-12-11 14:13   ` [PATCH v5 8/9] sequencer: try to commit without forking 'git commit' Phillip Wood
2018-01-10 20:53     ` Jonathan Nieder
2018-01-10 22:40       ` Johannes Schindelin
2018-01-11 10:41         ` Phillip Wood
2018-01-11 20:21           ` Johannes Schindelin
2017-12-11 14:13   ` [PATCH v5 9/9] t3512/t3513: remove KNOWN_FAILURE_CHERRY_PICK_SEES_EMPTY_COMMIT=1 Phillip Wood
2017-12-11 23:44   ` [PATCH v5 0/9] sequencer: don't fork git commit Junio C Hamano
2017-12-12 10:32     ` Phillip Wood
2017-12-13 11:46     ` [PATCH] sequencer: improve config handling Phillip Wood
2017-12-20 18:33       ` Error in `git': free(): invalid pointer (was Re: [PATCH] sequencer: improve config handling) Kaartic Sivaraam
2017-12-21 14:06         ` Johannes Schindelin
2017-12-21 16:42           ` Kaartic Sivaraam
2017-12-22 11:49             ` Johannes Schindelin
2017-12-25  8:51               ` Kaartic Sivaraam
     [not found]         ` <18737953.1042351513802399608.JavaMail.defaultUser@defaultHost>
2017-12-21 15:02           ` Kaartic Sivaraam
2017-12-21 16:53         ` phillip.wood
2017-12-21 17:14           ` Kaartic Sivaraam
2017-12-22 10:47             ` phillip.wood

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