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>
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			@ -8,7 +8,7 @@ git-notes - Add/inspect commit notes
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SYNOPSIS
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--------
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[verse]
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'git notes' (edit [-F <file> | -m <msg>] | show | remove) [commit]
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'git notes' (edit [-F <file> | -m <msg>] | show | remove | prune) [commit]
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DESCRIPTION
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-----------
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@ -37,6 +37,8 @@ remove::
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	This is equivalent to specifying an empty note message to
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	the `edit` subcommand.
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prune::
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	Remove all notes for non-existing/unreachable objects.
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OPTIONS
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-------
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@ -21,6 +21,7 @@ static const char * const git_notes_usage[] = {
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	"git notes edit [-m <msg> | -F <file>] [<object>]",
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	"git notes show [<object>]",
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	"git notes remove [<object>]",
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	"git notes prune",
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	NULL
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};
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@ -201,7 +202,7 @@ int cmd_notes(int argc, const char **argv, const char *prefix)
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	const char *object_ref;
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	char logmsg[100];
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	int edit = 0, show = 0, remove = 0;
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	int edit = 0, show = 0, remove = 0, prune = 0;
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	const char *msgfile = NULL;
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	struct msg_arg msg = { 0, STRBUF_INIT };
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	struct option options[] = {
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@ -222,8 +223,10 @@ int cmd_notes(int argc, const char **argv, const char *prefix)
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		show = 1;
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	else if (argc && !strcmp(argv[0], "remove"))
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		remove = 1;
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	else if (argc && !strcmp(argv[0], "prune"))
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		prune = 1;
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	if (edit + show + remove != 1)
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	if (edit + show + remove + prune != 1)
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		usage_with_options(git_notes_usage, options);
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	if ((msg.given || msgfile) && !edit) {
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@ -237,7 +240,7 @@ int cmd_notes(int argc, const char **argv, const char *prefix)
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	}
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	object_ref = argc == 2 ? argv[1] : "HEAD";
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	if (argc > 2) {
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	if (argc > 2 || (prune && argc > 1)) {
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		error("too many parameters");
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		usage_with_options(git_notes_usage, options);
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	}
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@ -264,7 +267,7 @@ int cmd_notes(int argc, const char **argv, const char *prefix)
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		return execv_git_cmd(show_args);
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	}
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	/* edit/remove command */
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	/* edit/remove/prune command */
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	if (remove)
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		strbuf_reset(&buf);
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@ -278,12 +281,17 @@ int cmd_notes(int argc, const char **argv, const char *prefix)
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			die_errno("could not open or read '%s'", msgfile);
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	}
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	if (prune) {
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		hashclr(new_note);
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		prune_notes(t);
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	} else {
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		create_note(object, &buf, msg.given || msgfile || remove, note,
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			    new_note);
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		if (is_null_sha1(new_note))
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			remove_note(t, object);
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		else
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			add_note(t, object, new_note, combine_notes_overwrite);
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	}
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	snprintf(logmsg, sizeof(logmsg), "Note %s by 'git notes %s'",
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		 is_null_sha1(new_note) ? "removed" : "added", argv[0]);
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	commit_notes(t, logmsg);
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										94
									
								
								t/t3306-notes-prune.sh
									
									
									
									
									
										Executable file
									
								
							
							
						
						
									
										94
									
								
								t/t3306-notes-prune.sh
									
									
									
									
									
										Executable file
									
								
							@ -0,0 +1,94 @@
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#!/bin/sh
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test_description='Test git notes prune'
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. ./test-lib.sh
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test_expect_success 'setup: create a few commits with notes' '
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	: > file1 &&
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	git add file1 &&
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	test_tick &&
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	git commit -m 1st &&
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	git notes edit -m "Note #1" &&
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	: > file2 &&
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	git add file2 &&
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	test_tick &&
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	git commit -m 2nd &&
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	git notes edit -m "Note #2" &&
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	: > file3 &&
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	git add file3 &&
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	test_tick &&
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	git commit -m 3rd &&
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	git notes edit -m "Note #3"
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'
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cat > expect <<END_OF_LOG
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commit 5ee1c35e83ea47cd3cc4f8cbee0568915fbbbd29
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Author: A U Thor <author@example.com>
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Date:   Thu Apr 7 15:15:13 2005 -0700
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    3rd
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Notes:
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    Note #3
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commit 08341ad9e94faa089d60fd3f523affb25c6da189
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Author: A U Thor <author@example.com>
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Date:   Thu Apr 7 15:14:13 2005 -0700
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    2nd
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Notes:
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    Note #2
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commit ab5f302035f2e7aaf04265f08b42034c23256e1f
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Author: A U Thor <author@example.com>
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Date:   Thu Apr 7 15:13:13 2005 -0700
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    1st
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Notes:
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    Note #1
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END_OF_LOG
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test_expect_success 'verify commits and notes' '
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	git log > actual &&
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	test_cmp expect actual
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'
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test_expect_success 'remove some commits' '
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	git reset --hard HEAD~2 &&
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	git reflog expire --expire=now HEAD &&
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	git gc --prune=now
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'
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test_expect_success 'verify that commits are gone' '
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	! git cat-file -p 5ee1c35e83ea47cd3cc4f8cbee0568915fbbbd29 &&
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	! git cat-file -p 08341ad9e94faa089d60fd3f523affb25c6da189 &&
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	git cat-file -p ab5f302035f2e7aaf04265f08b42034c23256e1f
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'
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test_expect_success 'verify that notes are still present' '
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	git notes show 5ee1c35e83ea47cd3cc4f8cbee0568915fbbbd29 &&
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	git notes show 08341ad9e94faa089d60fd3f523affb25c6da189 &&
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	git notes show ab5f302035f2e7aaf04265f08b42034c23256e1f
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'
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test_expect_success 'prune notes' '
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	git notes prune
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'
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test_expect_success 'verify that notes are gone' '
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	! git notes show 5ee1c35e83ea47cd3cc4f8cbee0568915fbbbd29 &&
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	! git notes show 08341ad9e94faa089d60fd3f523affb25c6da189 &&
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	git notes show ab5f302035f2e7aaf04265f08b42034c23256e1f
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'
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test_done
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