builtin-notes: Add "prune" subcommand for removing notes for missing objects
"git notes prune" will remove all notes that annotate unreachable/non- existing objects. The patch includes tests verifying correct behaviour of the new subcommand. Suggested-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Johan Herland <johan@herland.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>maint
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				|  | @ -8,7 +8,7 @@ git-notes - Add/inspect commit notes | |||
| SYNOPSIS | ||||
| -------- | ||||
| [verse] | ||||
| 'git notes' (edit [-F <file> | -m <msg>] | show | remove) [commit] | ||||
| 'git notes' (edit [-F <file> | -m <msg>] | show | remove | prune) [commit] | ||||
|  | ||||
| DESCRIPTION | ||||
| ----------- | ||||
|  | @ -37,6 +37,8 @@ remove:: | |||
| 	This is equivalent to specifying an empty note message to | ||||
| 	the `edit` subcommand. | ||||
|  | ||||
| prune:: | ||||
| 	Remove all notes for non-existing/unreachable objects. | ||||
|  | ||||
| OPTIONS | ||||
| ------- | ||||
|  |  | |||
|  | @ -21,6 +21,7 @@ static const char * const git_notes_usage[] = { | |||
| 	"git notes edit [-m <msg> | -F <file>] [<object>]", | ||||
| 	"git notes show [<object>]", | ||||
| 	"git notes remove [<object>]", | ||||
| 	"git notes prune", | ||||
| 	NULL | ||||
| }; | ||||
|  | ||||
|  | @ -201,7 +202,7 @@ int cmd_notes(int argc, const char **argv, const char *prefix) | |||
| 	const char *object_ref; | ||||
| 	char logmsg[100]; | ||||
|  | ||||
| 	int edit = 0, show = 0, remove = 0; | ||||
| 	int edit = 0, show = 0, remove = 0, prune = 0; | ||||
| 	const char *msgfile = NULL; | ||||
| 	struct msg_arg msg = { 0, STRBUF_INIT }; | ||||
| 	struct option options[] = { | ||||
|  | @ -222,8 +223,10 @@ int cmd_notes(int argc, const char **argv, const char *prefix) | |||
| 		show = 1; | ||||
| 	else if (argc && !strcmp(argv[0], "remove")) | ||||
| 		remove = 1; | ||||
| 	else if (argc && !strcmp(argv[0], "prune")) | ||||
| 		prune = 1; | ||||
|  | ||||
| 	if (edit + show + remove != 1) | ||||
| 	if (edit + show + remove + prune != 1) | ||||
| 		usage_with_options(git_notes_usage, options); | ||||
|  | ||||
| 	if ((msg.given || msgfile) && !edit) { | ||||
|  | @ -237,7 +240,7 @@ int cmd_notes(int argc, const char **argv, const char *prefix) | |||
| 	} | ||||
|  | ||||
| 	object_ref = argc == 2 ? argv[1] : "HEAD"; | ||||
| 	if (argc > 2) { | ||||
| 	if (argc > 2 || (prune && argc > 1)) { | ||||
| 		error("too many parameters"); | ||||
| 		usage_with_options(git_notes_usage, options); | ||||
| 	} | ||||
|  | @ -264,7 +267,7 @@ int cmd_notes(int argc, const char **argv, const char *prefix) | |||
| 		return execv_git_cmd(show_args); | ||||
| 	} | ||||
|  | ||||
| 	/* edit/remove command */ | ||||
| 	/* edit/remove/prune command */ | ||||
|  | ||||
| 	if (remove) | ||||
| 		strbuf_reset(&buf); | ||||
|  | @ -278,12 +281,17 @@ int cmd_notes(int argc, const char **argv, const char *prefix) | |||
| 			die_errno("could not open or read '%s'", msgfile); | ||||
| 	} | ||||
|  | ||||
| 	if (prune) { | ||||
| 		hashclr(new_note); | ||||
| 		prune_notes(t); | ||||
| 	} else { | ||||
| 		create_note(object, &buf, msg.given || msgfile || remove, note, | ||||
| 			    new_note); | ||||
| 		if (is_null_sha1(new_note)) | ||||
| 			remove_note(t, object); | ||||
| 		else | ||||
| 			add_note(t, object, new_note, combine_notes_overwrite); | ||||
| 	} | ||||
| 	snprintf(logmsg, sizeof(logmsg), "Note %s by 'git notes %s'", | ||||
| 		 is_null_sha1(new_note) ? "removed" : "added", argv[0]); | ||||
| 	commit_notes(t, logmsg); | ||||
|  |  | |||
|  | @ -0,0 +1,94 @@ | |||
| #!/bin/sh | ||||
|  | ||||
| test_description='Test git notes prune' | ||||
|  | ||||
| . ./test-lib.sh | ||||
|  | ||||
| test_expect_success 'setup: create a few commits with notes' ' | ||||
|  | ||||
| 	: > file1 && | ||||
| 	git add file1 && | ||||
| 	test_tick && | ||||
| 	git commit -m 1st && | ||||
| 	git notes edit -m "Note #1" && | ||||
| 	: > file2 && | ||||
| 	git add file2 && | ||||
| 	test_tick && | ||||
| 	git commit -m 2nd && | ||||
| 	git notes edit -m "Note #2" && | ||||
| 	: > file3 && | ||||
| 	git add file3 && | ||||
| 	test_tick && | ||||
| 	git commit -m 3rd && | ||||
| 	git notes edit -m "Note #3" | ||||
| ' | ||||
|  | ||||
| cat > expect <<END_OF_LOG | ||||
| commit 5ee1c35e83ea47cd3cc4f8cbee0568915fbbbd29 | ||||
| Author: A U Thor <author@example.com> | ||||
| Date:   Thu Apr 7 15:15:13 2005 -0700 | ||||
|  | ||||
|     3rd | ||||
|  | ||||
| Notes: | ||||
|     Note #3 | ||||
|  | ||||
| commit 08341ad9e94faa089d60fd3f523affb25c6da189 | ||||
| Author: A U Thor <author@example.com> | ||||
| Date:   Thu Apr 7 15:14:13 2005 -0700 | ||||
|  | ||||
|     2nd | ||||
|  | ||||
| Notes: | ||||
|     Note #2 | ||||
|  | ||||
| commit ab5f302035f2e7aaf04265f08b42034c23256e1f | ||||
| Author: A U Thor <author@example.com> | ||||
| Date:   Thu Apr 7 15:13:13 2005 -0700 | ||||
|  | ||||
|     1st | ||||
|  | ||||
| Notes: | ||||
|     Note #1 | ||||
| END_OF_LOG | ||||
|  | ||||
| test_expect_success 'verify commits and notes' ' | ||||
|  | ||||
| 	git log > actual && | ||||
| 	test_cmp expect actual | ||||
| ' | ||||
|  | ||||
| test_expect_success 'remove some commits' ' | ||||
|  | ||||
| 	git reset --hard HEAD~2 && | ||||
| 	git reflog expire --expire=now HEAD && | ||||
| 	git gc --prune=now | ||||
| ' | ||||
|  | ||||
| test_expect_success 'verify that commits are gone' ' | ||||
|  | ||||
| 	! git cat-file -p 5ee1c35e83ea47cd3cc4f8cbee0568915fbbbd29 && | ||||
| 	! git cat-file -p 08341ad9e94faa089d60fd3f523affb25c6da189 && | ||||
| 	git cat-file -p ab5f302035f2e7aaf04265f08b42034c23256e1f | ||||
| ' | ||||
|  | ||||
| test_expect_success 'verify that notes are still present' ' | ||||
|  | ||||
| 	git notes show 5ee1c35e83ea47cd3cc4f8cbee0568915fbbbd29 && | ||||
| 	git notes show 08341ad9e94faa089d60fd3f523affb25c6da189 && | ||||
| 	git notes show ab5f302035f2e7aaf04265f08b42034c23256e1f | ||||
| ' | ||||
|  | ||||
| test_expect_success 'prune notes' ' | ||||
|  | ||||
| 	git notes prune | ||||
| ' | ||||
|  | ||||
| test_expect_success 'verify that notes are gone' ' | ||||
|  | ||||
| 	! git notes show 5ee1c35e83ea47cd3cc4f8cbee0568915fbbbd29 && | ||||
| 	! git notes show 08341ad9e94faa089d60fd3f523affb25c6da189 && | ||||
| 	git notes show ab5f302035f2e7aaf04265f08b42034c23256e1f | ||||
| ' | ||||
|  | ||||
| test_done | ||||
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	 Johan Herland
						Johan Herland