[thirdparty/git.git] / builtin-notes.c

/*
 * Builtin "git notes"
 *
 * Copyright (c) 2010 Johan Herland <johan@herland.net>
 *
 * Based on git-notes.sh by Johannes Schindelin,
 * and builtin-tag.c by Kristian Høgsberg and Carlos Rica.
 */

#include "cache.h"
#include "builtin.h"
#include "notes.h"
#include "blob.h"
#include "commit.h"
#include "refs.h"
#include "exec_cmd.h"
#include "run-command.h"
#include "parse-options.h"

static const char * const git_notes_usage[] = {
	"git notes [list [<object>]]",
	"git notes add [-f] [-m <msg> | -F <file> | (-c | -C) <object>] [<object>]",
	"git notes copy [-f] <from-object> <to-object>",
	"git notes append [-m <msg> | -F <file> | (-c | -C) <object>] [<object>]",
	"git notes edit [<object>]",
	"git notes show [<object>]",
	"git notes remove [<object>]",
	"git notes prune",
	NULL
};

static const char note_template[] =
	"\n"
	"#\n"
	"# Write/edit the notes for the following object:\n"
	"#\n";

struct msg_arg {
	int given;
	int use_editor;
	struct strbuf buf;
};

static int list_each_note(const unsigned char *object_sha1,
		const unsigned char *note_sha1, char *note_path,
		void *cb_data)
{
	printf("%s %s\n", sha1_to_hex(note_sha1), sha1_to_hex(object_sha1));
	return 0;
}

static void write_note_data(int fd, const unsigned char *sha1)
{
	unsigned long size;
	enum object_type type;
	char *buf = read_sha1_file(sha1, &type, &size);
	if (buf) {
		if (size)
			write_or_die(fd, buf, size);
		free(buf);
	}
}

static void write_commented_object(int fd, const unsigned char *object)
{
	const char *show_args[5] =
		{"show", "--stat", "--no-notes", sha1_to_hex(object), NULL};
	struct child_process show;
	struct strbuf buf = STRBUF_INIT;
	FILE *show_out;

	/* Invoke "git show --stat --no-notes $object" */
	memset(&show, 0, sizeof(show));
	show.argv = show_args;
	show.no_stdin = 1;
	show.out = -1;
	show.err = 0;
	show.git_cmd = 1;
	if (start_command(&show))
		die("unable to start 'show' for object '%s'",
		    sha1_to_hex(object));

	/* Open the output as FILE* so strbuf_getline() can be used. */
	show_out = xfdopen(show.out, "r");
	if (show_out == NULL)
		die_errno("can't fdopen 'show' output fd");

	/* Prepend "# " to each output line and write result to 'fd' */
	while (strbuf_getline(&buf, show_out, '\n') != EOF) {
		write_or_die(fd, "# ", 2);
		write_or_die(fd, buf.buf, buf.len);
		write_or_die(fd, "\n", 1);
	}
	strbuf_release(&buf);
	if (fclose(show_out))
		die_errno("failed to close pipe to 'show' for object '%s'",
			  sha1_to_hex(object));
	if (finish_command(&show))
		die("failed to finish 'show' for object '%s'",
		    sha1_to_hex(object));
}

static void create_note(const unsigned char *object, struct msg_arg *msg,
			int append_only, const unsigned char *prev,
			unsigned char *result)
{
	char *path = NULL;

	if (msg->use_editor || !msg->given) {
		int fd;

		/* write the template message before editing: */
		path = git_pathdup("NOTES_EDITMSG");
		fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
		if (fd < 0)
			die_errno("could not create file '%s'", path);

		if (msg->given)
			write_or_die(fd, msg->buf.buf, msg->buf.len);
		else if (prev && !append_only)
			write_note_data(fd, prev);
		write_or_die(fd, note_template, strlen(note_template));

		write_commented_object(fd, object);

		close(fd);
		strbuf_reset(&(msg->buf));

		if (launch_editor(path, &(msg->buf), NULL)) {
			die("Please supply the note contents using either -m" \
			    " or -F option");
		}
		stripspace(&(msg->buf), 1);
	}

	if (prev && append_only) {
		/* Append buf to previous note contents */
		unsigned long size;
		enum object_type type;
		char *prev_buf = read_sha1_file(prev, &type, &size);

		strbuf_grow(&(msg->buf), size + 1);
		if (msg->buf.len && prev_buf && size)
			strbuf_insert(&(msg->buf), 0, "\n", 1);
		if (prev_buf && size)
			strbuf_insert(&(msg->buf), 0, prev_buf, size);
		free(prev_buf);
	}

	if (!msg->buf.len) {
		fprintf(stderr, "Removing note for object %s\n",
			sha1_to_hex(object));
		hashclr(result);
	} else {
		if (write_sha1_file(msg->buf.buf, msg->buf.len, blob_type, result)) {
			error("unable to write note object");
			if (path)
				error("The note contents has been left in %s",
				      path);
			exit(128);
		}
	}

	if (path) {
		unlink_or_warn(path);
		free(path);
	}
}

static int parse_msg_arg(const struct option *opt, const char *arg, int unset)
{
	struct msg_arg *msg = opt->value;

	if (!arg)
		return -1;

	strbuf_grow(&(msg->buf), strlen(arg) + 2);
	if (msg->buf.len)
		strbuf_addstr(&(msg->buf), "\n");
	strbuf_addstr(&(msg->buf), arg);
	stripspace(&(msg->buf), 0);

	msg->given = 1;
	return 0;
}

static int parse_file_arg(const struct option *opt, const char *arg, int unset)
{
	struct msg_arg *msg = opt->value;

	if (!arg)
		return -1;

	if (msg->buf.len)
		strbuf_addstr(&(msg->buf), "\n");
	if (!strcmp(arg, "-")) {
		if (strbuf_read(&(msg->buf), 0, 1024) < 0)
			die_errno("cannot read '%s'", arg);
	} else if (strbuf_read_file(&(msg->buf), arg, 1024) < 0)
		die_errno("could not open or read '%s'", arg);
	stripspace(&(msg->buf), 0);

	msg->given = 1;
	return 0;
}

static int parse_reuse_arg(const struct option *opt, const char *arg, int unset)
{
	struct msg_arg *msg = opt->value;
	char *buf;
	unsigned char object[20];
	enum object_type type;
	unsigned long len;

	if (!arg)
		return -1;

	if (msg->buf.len)
		strbuf_addstr(&(msg->buf), "\n");

	if (get_sha1(arg, object))
		die("Failed to resolve '%s' as a valid ref.", arg);
	if (!(buf = read_sha1_file(object, &type, &len)) || !len) {
		free(buf);
		die("Failed to read object '%s'.", arg);;
	}
	strbuf_add(&(msg->buf), buf, len);
	free(buf);

	msg->given = 1;
	return 0;
}

static int parse_reedit_arg(const struct option *opt, const char *arg, int unset)
{
	struct msg_arg *msg = opt->value;
	msg->use_editor = 1;
	return parse_reuse_arg(opt, arg, unset);
}

int commit_notes(struct notes_tree *t, const char *msg)
{
	struct commit_list *parent;
	unsigned char tree_sha1[20], prev_commit[20], new_commit[20];
	struct strbuf buf = STRBUF_INIT;

	if (!t)
		t = &default_notes_tree;
	if (!t->initialized || !t->ref || !*t->ref)
		die("Cannot commit uninitialized/unreferenced notes tree");

	/* Prepare commit message and reflog message */
	strbuf_addstr(&buf, "notes: "); /* commit message starts at index 7 */
	strbuf_addstr(&buf, msg);
	if (buf.buf[buf.len - 1] != '\n')
		strbuf_addch(&buf, '\n'); /* Make sure msg ends with newline */

	/* Convert notes tree to tree object */
	if (write_notes_tree(t, tree_sha1))
		die("Failed to write current notes tree to database");

	/* Create new commit for the tree object */
	if (!read_ref(t->ref, prev_commit)) { /* retrieve parent commit */
		parent = xmalloc(sizeof(*parent));
		parent->item = lookup_commit(prev_commit);
		parent->next = NULL;
	} else {
		hashclr(prev_commit);
		parent = NULL;
	}
	if (commit_tree(buf.buf + 7, tree_sha1, parent, new_commit, NULL))
		die("Failed to commit notes tree to database");

	/* Update notes ref with new commit */
	update_ref(buf.buf, t->ref, new_commit, prev_commit, 0, DIE_ON_ERR);

	strbuf_release(&buf);
	return 0;
}

int notes_copy_from_stdin(int force)
{
	struct strbuf buf = STRBUF_INIT;
	struct notes_tree *t;
	int ret = 0;

	init_notes(NULL, NULL, NULL, 0);
	t = &default_notes_tree;

	while (strbuf_getline(&buf, stdin, '\n') != EOF) {
		unsigned char from_obj[20], to_obj[20];
		struct strbuf **split;
		int err;

		split = strbuf_split(&buf, ' ');
		if (!split[0] || !split[1])
			die("Malformed input line: '%s'.", buf.buf);
		strbuf_rtrim(split[0]);
		strbuf_rtrim(split[1]);
		if (get_sha1(split[0]->buf, from_obj))
			die("Failed to resolve '%s' as a valid ref.", split[0]->buf);
		if (get_sha1(split[1]->buf, to_obj))
			die("Failed to resolve '%s' as a valid ref.", split[1]->buf);

		err = copy_note(t, from_obj, to_obj, force, combine_notes_overwrite);

		if (err) {
			error("Failed to copy notes from '%s' to '%s'",
			      split[0]->buf, split[1]->buf);
			ret = 1;
		}

		strbuf_list_free(split);
	}

	commit_notes(t, "Notes added by 'git notes copy'");
	free_notes(t);
	return ret;
}

int cmd_notes(int argc, const char **argv, const char *prefix)
{
	struct notes_tree *t;
	unsigned char object[20], from_obj[20], new_note[20];
	const unsigned char *note;
	const char *object_ref;
	char logmsg[100];

	int list = 0, add = 0, copy = 0, append = 0, edit = 0, show = 0,
	    remove = 0, prune = 0, force = 0, from_stdin = 0;
	int given_object = 0, i = 1, retval = 0;
	struct msg_arg msg = { 0, 0, STRBUF_INIT };
	struct option options[] = {
		OPT_GROUP("Notes options"),
		OPT_CALLBACK('m', "message", &msg, "MSG",
			     "note contents as a string", parse_msg_arg),
		OPT_CALLBACK('F', "file", &msg, "FILE",
			     "note contents in a file", parse_file_arg),
		OPT_CALLBACK('c', "reedit-message", &msg, "OBJECT",
			   "reuse and edit specified note object", parse_reedit_arg),
		OPT_CALLBACK('C', "reuse-message", &msg, "OBJECT",
			   "reuse specified note object", parse_reuse_arg),
		OPT_BOOLEAN('f', "force", &force, "replace existing notes"),
		OPT_BOOLEAN(0, "stdin", &from_stdin, "read objects from stdin"),
		OPT_END()
	};

	git_config(git_default_config, NULL);

	argc = parse_options(argc, argv, prefix, options, git_notes_usage, 0);

	if (argc && !strcmp(argv[0], "list"))
		list = 1;
	else if (argc && !strcmp(argv[0], "add"))
		add = 1;
	else if (argc && !strcmp(argv[0], "copy"))
		copy = 1;
	else if (argc && !strcmp(argv[0], "append"))
		append = 1;
	else if (argc && !strcmp(argv[0], "edit"))
		edit = 1;
	else if (argc && !strcmp(argv[0], "show"))
		show = 1;
	else if (argc && !strcmp(argv[0], "remove"))
		remove = 1;
	else if (argc && !strcmp(argv[0], "prune"))
		prune = 1;
	else if (!argc) {
		list = 1; /* Default to 'list' if no other subcommand given */
		i = 0;
	}

	if (list + add + copy + append + edit + show + remove + prune != 1)
		usage_with_options(git_notes_usage, options);

	if (msg.given && !(add || append || edit)) {
		error("cannot use -m/-F/-c/-C options with %s subcommand.",
		      argv[0]);
		usage_with_options(git_notes_usage, options);
	}

	if (msg.given && edit) {
		fprintf(stderr, "The -m/-F/-c/-C options have been deprecated "
			"for the 'edit' subcommand.\n"
			"Please use 'git notes add -f -m/-F/-c/-C' instead.\n");
	}

	if (force && !(add || copy)) {
		error("cannot use -f option with %s subcommand.", argv[0]);
		usage_with_options(git_notes_usage, options);
	}

	if (!copy && from_stdin) {
		error("cannot use --stdin with %s subcommand.", argv[0]);
		usage_with_options(git_notes_usage, options);
	}

	if (copy) {
		const char *from_ref;
		if (from_stdin) {
			if (argc > 1) {
				error("too many parameters");
				usage_with_options(git_notes_usage, options);
			} else {
				return notes_copy_from_stdin(force);
			}
		}
		if (argc < 3) {
			error("too few parameters");
			usage_with_options(git_notes_usage, options);
		}
		from_ref = argv[i++];
		if (get_sha1(from_ref, from_obj))
			die("Failed to resolve '%s' as a valid ref.", from_ref);
	}

	given_object = argc > i;
	object_ref = given_object ? argv[i++] : "HEAD";

	if (argc > i || (prune && given_object)) {
		error("too many parameters");
		usage_with_options(git_notes_usage, options);
	}

	if (get_sha1(object_ref, object))
		die("Failed to resolve '%s' as a valid ref.", object_ref);

	init_notes(NULL, NULL, NULL, 0);
	t = &default_notes_tree;

	if (prefixcmp(t->ref, "refs/notes/"))
		die("Refusing to %s notes in %s (outside of refs/notes/)",
		    argv[0], t->ref);

	note = get_note(t, object);

	/* list command */

	if (list) {
		if (given_object) {
			if (note) {
				puts(sha1_to_hex(note));
				goto end;
			}
		} else {
			retval = for_each_note(t, 0, list_each_note, NULL);
			goto end;
		}
	}

	/* show command */

	if ((list || show) && !note) {
		error("No note found for object %s.", sha1_to_hex(object));
		retval = 1;
		goto end;
	} else if (show) {
		const char *show_args[3] = {"show", sha1_to_hex(note), NULL};
		retval = execv_git_cmd(show_args);
		goto end;
	}

	/* add/append/edit/remove/prune command */

	if ((add || copy) && note) {
		if (!force) {
			error("Cannot %s notes. Found existing notes for object"
			      " %s. Use '-f' to overwrite existing notes",
			      argv[0], sha1_to_hex(object));
			retval = 1;
			goto end;
		}
		fprintf(stderr, "Overwriting existing notes for object %s\n",
			sha1_to_hex(object));
	}

	if (remove) {
		msg.given = 1;
		msg.use_editor = 0;
		strbuf_reset(&(msg.buf));
	}

	if (prune) {
		hashclr(new_note);
		prune_notes(t);
		goto commit;
	} else if (copy) {
		const unsigned char *from_note = get_note(t, from_obj);
		if (!from_note) {
			error("Missing notes on source object %s. Cannot copy.",
			      sha1_to_hex(from_obj));
			retval = 1;
			goto end;
		}
		hashcpy(new_note, from_note);
	} else
		create_note(object, &msg, append, note, new_note);

	if (is_null_sha1(new_note))
		remove_note(t, object);
	else
		add_note(t, object, new_note, combine_notes_overwrite);

commit:
	snprintf(logmsg, sizeof(logmsg), "Notes %s by 'git notes %s'",
		 is_null_sha1(new_note) ? "removed" : "added", argv[0]);
	commit_notes(t, logmsg);

end:
	free_notes(t);
	strbuf_release(&(msg.buf));
	return retval;
}
Commit	Line	Data
cd067d3b JH	1	/*
	2	* Builtin "git notes"
	3	*
	4	* Copyright (c) 2010 Johan Herland <johan@herland.net>
	5	*
	6	* Based on git-notes.sh by Johannes Schindelin,
	7	* and builtin-tag.c by Kristian Høgsberg and Carlos Rica.
	8	*/
	9
	10	#include "cache.h"
	11	#include "builtin.h"
	12	#include "notes.h"
	13	#include "blob.h"
	14	#include "commit.h"
	15	#include "refs.h"
	16	#include "exec_cmd.h"
	17	#include "run-command.h"
	18	#include "parse-options.h"
	19
	20	static const char * const git_notes_usage[] = {
e397421a	21	"git notes [list [<object>]]",
0691cff7	22	"git notes add [-f] [-m <msg> \| -F <file> \| (-c \| -C) <object>] [<object>]",
e73bbd96	23	"git notes copy [-f] <from-object> <to-object>",
0691cff7	24	"git notes append [-m <msg> \| -F <file> \| (-c \| -C) <object>] [<object>]",
aaec9bcf	25	"git notes edit [<object>]",
cd067d3b	26	"git notes show [<object>]",
92b3385f	27	"git notes remove [<object>]",
d6576e1f	28	"git notes prune",
cd067d3b JH	29	NULL
	30	};
	31
	32	static const char note_template[] =
	33	"\n"
	34	"#\n"
	35	"# Write/edit the notes for the following object:\n"
	36	"#\n";
	37
348f199b JH	38	struct msg_arg {
348f199b JH	39	int given;
0691cff7	40	int use_editor;
348f199b JH	41	struct strbuf buf;
	42	};
	43
e397421a JH	44	static int list_each_note(const unsigned char *object_sha1,
	45	const unsigned char note_sha1, char note_path,
	46	void *cb_data)
	47	{
	48	printf("%s %s\n", sha1_to_hex(note_sha1), sha1_to_hex(object_sha1));
	49	return 0;
	50	}
	51
cd067d3b JH	52	static void write_note_data(int fd, const unsigned char *sha1)
	53	{
	54	unsigned long size;
	55	enum object_type type;
	56	char *buf = read_sha1_file(sha1, &type, &size);
	57	if (buf) {
	58	if (size)
	59	write_or_die(fd, buf, size);
	60	free(buf);
	61	}
	62	}
	63
	64	static void write_commented_object(int fd, const unsigned char *object)
	65	{
	66	const char *show_args[5] =
	67	{"show", "--stat", "--no-notes", sha1_to_hex(object), NULL};
	68	struct child_process show;
	69	struct strbuf buf = STRBUF_INIT;
	70	FILE *show_out;
	71
	72	/* Invoke "git show --stat --no-notes $object" */
	73	memset(&show, 0, sizeof(show));
	74	show.argv = show_args;
	75	show.no_stdin = 1;
	76	show.out = -1;
	77	show.err = 0;
	78	show.git_cmd = 1;
	79	if (start_command(&show))
	80	die("unable to start 'show' for object '%s'",
	81	sha1_to_hex(object));
	82
	83	/* Open the output as FILE* so strbuf_getline() can be used. */
	84	show_out = xfdopen(show.out, "r");
	85	if (show_out == NULL)
	86	die_errno("can't fdopen 'show' output fd");
	87
	88	/* Prepend "# " to each output line and write result to 'fd' */
	89	while (strbuf_getline(&buf, show_out, '\n') != EOF) {
	90	write_or_die(fd, "# ", 2);
	91	write_or_die(fd, buf.buf, buf.len);
	92	write_or_die(fd, "\n", 1);
	93	}
	94	strbuf_release(&buf);
	95	if (fclose(show_out))
	96	die_errno("failed to close pipe to 'show' for object '%s'",
	97	sha1_to_hex(object));
	98	if (finish_command(&show))
	99	die("failed to finish 'show' for object '%s'",
	100	sha1_to_hex(object));
	101	}
	102
348f199b JH	103	static void create_note(const unsigned char object, struct msg_arg msg,
348f199b JH	104	int append_only, const unsigned char *prev,
cd067d3b JH	105	unsigned char *result)
	106	{
	107	char *path = NULL;
	108
0691cff7	109	if (msg->use_editor \|\| !msg->given) {
cd067d3b JH	110	int fd;
	111
	112	/* write the template message before editing: */
	113	path = git_pathdup("NOTES_EDITMSG");
	114	fd = open(path, O_CREAT \| O_TRUNC \| O_WRONLY, 0600);
	115	if (fd < 0)
	116	die_errno("could not create file '%s'", path);
	117
0691cff7 JH	118	if (msg->given)
	119	write_or_die(fd, msg->buf.buf, msg->buf.len);
	120	else if (prev && !append_only)
cd067d3b JH	121	write_note_data(fd, prev);
	122	write_or_die(fd, note_template, strlen(note_template));
	123
	124	write_commented_object(fd, object);
	125
	126	close(fd);
0691cff7	127	strbuf_reset(&(msg->buf));
cd067d3b	128
348f199b	129	if (launch_editor(path, &(msg->buf), NULL)) {
cd067d3b JH	130	die("Please supply the note contents using either -m" \
	131	" or -F option");
	132	}
348f199b	133	stripspace(&(msg->buf), 1);
cd067d3b JH	134	}
cd067d3b JH	135
2347fae5 JH	136	if (prev && append_only) {
	137	/* Append buf to previous note contents */
	138	unsigned long size;
	139	enum object_type type;
	140	char *prev_buf = read_sha1_file(prev, &type, &size);
	141
348f199b JH	142	strbuf_grow(&(msg->buf), size + 1);
	143	if (msg->buf.len && prev_buf && size)
	144	strbuf_insert(&(msg->buf), 0, "\n", 1);
2347fae5	145	if (prev_buf && size)
348f199b	146	strbuf_insert(&(msg->buf), 0, prev_buf, size);
2347fae5 JH	147	free(prev_buf);
	148	}
	149
348f199b	150	if (!msg->buf.len) {
cd067d3b JH	151	fprintf(stderr, "Removing note for object %s\n",
	152	sha1_to_hex(object));
	153	hashclr(result);
	154	} else {
348f199b	155	if (write_sha1_file(msg->buf.buf, msg->buf.len, blob_type, result)) {
cd067d3b JH	156	error("unable to write note object");
	157	if (path)
	158	error("The note contents has been left in %s",
	159	path);
	160	exit(128);
	161	}
	162	}
	163
	164	if (path) {
	165	unlink_or_warn(path);
	166	free(path);
	167	}
	168	}
	169
cd067d3b JH	170	static int parse_msg_arg(const struct option opt, const char arg, int unset)
	171	{
	172	struct msg_arg *msg = opt->value;
	173
	174	if (!arg)
	175	return -1;
348f199b JH	176
348f199b JH	177	strbuf_grow(&(msg->buf), strlen(arg) + 2);
cd067d3b	178	if (msg->buf.len)
348f199b	179	strbuf_addstr(&(msg->buf), "\n");
cd067d3b	180	strbuf_addstr(&(msg->buf), arg);
348f199b JH	181	stripspace(&(msg->buf), 0);
	182
	183	msg->given = 1;
	184	return 0;
	185	}
	186
	187	static int parse_file_arg(const struct option opt, const char arg, int unset)
	188	{
	189	struct msg_arg *msg = opt->value;
	190
	191	if (!arg)
	192	return -1;
	193
	194	if (msg->buf.len)
	195	strbuf_addstr(&(msg->buf), "\n");
	196	if (!strcmp(arg, "-")) {
	197	if (strbuf_read(&(msg->buf), 0, 1024) < 0)
	198	die_errno("cannot read '%s'", arg);
	199	} else if (strbuf_read_file(&(msg->buf), arg, 1024) < 0)
	200	die_errno("could not open or read '%s'", arg);
	201	stripspace(&(msg->buf), 0);
	202
cd067d3b JH	203	msg->given = 1;
	204	return 0;
	205	}
	206
0691cff7 JH	207	static int parse_reuse_arg(const struct option opt, const char arg, int unset)
	208	{
	209	struct msg_arg *msg = opt->value;
	210	char *buf;
	211	unsigned char object[20];
	212	enum object_type type;
	213	unsigned long len;
	214
	215	if (!arg)
	216	return -1;
	217
	218	if (msg->buf.len)
	219	strbuf_addstr(&(msg->buf), "\n");
	220
	221	if (get_sha1(arg, object))
	222	die("Failed to resolve '%s' as a valid ref.", arg);
	223	if (!(buf = read_sha1_file(object, &type, &len)) \|\| !len) {
	224	free(buf);
	225	die("Failed to read object '%s'.", arg);;
	226	}
	227	strbuf_add(&(msg->buf), buf, len);
	228	free(buf);
	229
	230	msg->given = 1;
	231	return 0;
	232	}
	233
	234	static int parse_reedit_arg(const struct option opt, const char arg, int unset)
	235	{
	236	struct msg_arg *msg = opt->value;
	237	msg->use_editor = 1;
	238	return parse_reuse_arg(opt, arg, unset);
	239	}
	240
cd067d3b JH	241	int commit_notes(struct notes_tree t, const char msg)
	242	{
	243	struct commit_list *parent;
	244	unsigned char tree_sha1[20], prev_commit[20], new_commit[20];
	245	struct strbuf buf = STRBUF_INIT;
	246
	247	if (!t)
	248	t = &default_notes_tree;
	249	if (!t->initialized \|\| !t->ref \|\| !*t->ref)
	250	die("Cannot commit uninitialized/unreferenced notes tree");
	251
	252	/* Prepare commit message and reflog message */
	253	strbuf_addstr(&buf, "notes: "); /* commit message starts at index 7 */
	254	strbuf_addstr(&buf, msg);
	255	if (buf.buf[buf.len - 1] != '\n')
	256	strbuf_addch(&buf, '\n'); /* Make sure msg ends with newline */
	257
	258	/* Convert notes tree to tree object */
	259	if (write_notes_tree(t, tree_sha1))
	260	die("Failed to write current notes tree to database");
	261
	262	/* Create new commit for the tree object */
	263	if (!read_ref(t->ref, prev_commit)) { /* retrieve parent commit */
	264	parent = xmalloc(sizeof(*parent));
	265	parent->item = lookup_commit(prev_commit);
	266	parent->next = NULL;
	267	} else {
	268	hashclr(prev_commit);
	269	parent = NULL;
	270	}
	271	if (commit_tree(buf.buf + 7, tree_sha1, parent, new_commit, NULL))
	272	die("Failed to commit notes tree to database");
	273
	274	/* Update notes ref with new commit */
	275	update_ref(buf.buf, t->ref, new_commit, prev_commit, 0, DIE_ON_ERR);
	276
	277	strbuf_release(&buf);
	278	return 0;
	279	}
	280
160baa0d TR	281	int notes_copy_from_stdin(int force)
	282	{
	283	struct strbuf buf = STRBUF_INIT;
	284	struct notes_tree *t;
	285	int ret = 0;
	286
	287	init_notes(NULL, NULL, NULL, 0);
	288	t = &default_notes_tree;
	289
	290	while (strbuf_getline(&buf, stdin, '\n') != EOF) {
	291	unsigned char from_obj[20], to_obj[20];
	292	struct strbuf **split;
	293	int err;
	294
	295	split = strbuf_split(&buf, ' ');
	296	if (!split[0] \|\| !split[1])
	297	die("Malformed input line: '%s'.", buf.buf);
	298	strbuf_rtrim(split[0]);
	299	strbuf_rtrim(split[1]);
	300	if (get_sha1(split[0]->buf, from_obj))
	301	die("Failed to resolve '%s' as a valid ref.", split[0]->buf);
	302	if (get_sha1(split[1]->buf, to_obj))
	303	die("Failed to resolve '%s' as a valid ref.", split[1]->buf);
	304
	305	err = copy_note(t, from_obj, to_obj, force, combine_notes_overwrite);
	306
	307	if (err) {
	308	error("Failed to copy notes from '%s' to '%s'",
	309	split[0]->buf, split[1]->buf);
	310	ret = 1;
	311	}
	312
	313	strbuf_list_free(split);
	314	}
	315
	316	commit_notes(t, "Notes added by 'git notes copy'");
	317	free_notes(t);
	318	return ret;
	319	}
	320
cd067d3b JH	321	int cmd_notes(int argc, const char *argv, const char prefix)
cd067d3b JH	322	{
cd067d3b	323	struct notes_tree *t;
e73bbd96	324	unsigned char object[20], from_obj[20], new_note[20];
cd067d3b	325	const unsigned char *note;
92b3385f JH	326	const char *object_ref;
92b3385f JH	327	char logmsg[100];
a0b4dfa9	328
e73bbd96	329	int list = 0, add = 0, copy = 0, append = 0, edit = 0, show = 0,
160baa0d	330	remove = 0, prune = 0, force = 0, from_stdin = 0;
5848769f	331	int given_object = 0, i = 1, retval = 0;
0691cff7	332	struct msg_arg msg = { 0, 0, STRBUF_INIT };
cd067d3b	333	struct option options[] = {
aaec9bcf	334	OPT_GROUP("Notes options"),
348f199b	335	OPT_CALLBACK('m', "message", &msg, "MSG",
cd067d3b	336	"note contents as a string", parse_msg_arg),
348f199b JH	337	OPT_CALLBACK('F', "file", &msg, "FILE",
348f199b JH	338	"note contents in a file", parse_file_arg),
0691cff7 JH	339	OPT_CALLBACK('c', "reedit-message", &msg, "OBJECT",
	340	"reuse and edit specified note object", parse_reedit_arg),
	341	OPT_CALLBACK('C', "reuse-message", &msg, "OBJECT",
	342	"reuse specified note object", parse_reuse_arg),
7aa4754e	343	OPT_BOOLEAN('f', "force", &force, "replace existing notes"),
160baa0d	344	OPT_BOOLEAN(0, "stdin", &from_stdin, "read objects from stdin"),
cd067d3b JH	345	OPT_END()
	346	};
	347
	348	git_config(git_default_config, NULL);
	349
	350	argc = parse_options(argc, argv, prefix, options, git_notes_usage, 0);
	351
e397421a JH	352	if (argc && !strcmp(argv[0], "list"))
e397421a JH	353	list = 1;
7aa4754e JH	354	else if (argc && !strcmp(argv[0], "add"))
7aa4754e JH	355	add = 1;
e73bbd96 JH	356	else if (argc && !strcmp(argv[0], "copy"))
e73bbd96 JH	357	copy = 1;
2347fae5 JH	358	else if (argc && !strcmp(argv[0], "append"))
2347fae5 JH	359	append = 1;
e397421a	360	else if (argc && !strcmp(argv[0], "edit"))
cd067d3b JH	361	edit = 1;
	362	else if (argc && !strcmp(argv[0], "show"))
	363	show = 1;
92b3385f JH	364	else if (argc && !strcmp(argv[0], "remove"))
92b3385f JH	365	remove = 1;
d6576e1f JH	366	else if (argc && !strcmp(argv[0], "prune"))
d6576e1f JH	367	prune = 1;
5848769f	368	else if (!argc) {
e397421a	369	list = 1; /* Default to 'list' if no other subcommand given */
5848769f JH	370	i = 0;
5848769f JH	371	}
cd067d3b	372
e73bbd96	373	if (list + add + copy + append + edit + show + remove + prune != 1)
cd067d3b JH	374	usage_with_options(git_notes_usage, options);
cd067d3b JH	375
348f199b	376	if (msg.given && !(add \|\| append \|\| edit)) {
0691cff7 JH	377	error("cannot use -m/-F/-c/-C options with %s subcommand.",
0691cff7 JH	378	argv[0]);
92b3385f JH	379	usage_with_options(git_notes_usage, options);
	380	}
	381
348f199b	382	if (msg.given && edit) {
0691cff7 JH	383	fprintf(stderr, "The -m/-F/-c/-C options have been deprecated "
	384	"for the 'edit' subcommand.\n"
	385	"Please use 'git notes add -f -m/-F/-c/-C' instead.\n");
aaec9bcf JH	386	}
aaec9bcf JH	387
e73bbd96	388	if (force && !(add \|\| copy)) {
7aa4754e JH	389	error("cannot use -f option with %s subcommand.", argv[0]);
	390	usage_with_options(git_notes_usage, options);
	391	}
	392
160baa0d TR	393	if (!copy && from_stdin) {
	394	error("cannot use --stdin with %s subcommand.", argv[0]);
	395	usage_with_options(git_notes_usage, options);
	396	}
	397
e73bbd96 JH	398	if (copy) {
e73bbd96 JH	399	const char *from_ref;
160baa0d TR	400	if (from_stdin) {
	401	if (argc > 1) {
	402	error("too many parameters");
	403	usage_with_options(git_notes_usage, options);
	404	} else {
	405	return notes_copy_from_stdin(force);
	406	}
	407	}
e73bbd96 JH	408	if (argc < 3) {
	409	error("too few parameters");
	410	usage_with_options(git_notes_usage, options);
	411	}
	412	from_ref = argv[i++];
	413	if (get_sha1(from_ref, from_obj))
	414	die("Failed to resolve '%s' as a valid ref.", from_ref);
	415	}
	416
5848769f JH	417	given_object = argc > i;
	418	object_ref = given_object ? argv[i++] : "HEAD";
	419
	420	if (argc > i \|\| (prune && given_object)) {
cd067d3b JH	421	error("too many parameters");
	422	usage_with_options(git_notes_usage, options);
	423	}
	424
	425	if (get_sha1(object_ref, object))
	426	die("Failed to resolve '%s' as a valid ref.", object_ref);
	427
	428	init_notes(NULL, NULL, NULL, 0);
	429	t = &default_notes_tree;
	430
	431	if (prefixcmp(t->ref, "refs/notes/"))
	432	die("Refusing to %s notes in %s (outside of refs/notes/)",
92b3385f	433	argv[0], t->ref);
cd067d3b JH	434
	435	note = get_note(t, object);
	436
e397421a JH	437	/* list command */
	438
	439	if (list) {
	440	if (given_object) {
	441	if (note) {
	442	puts(sha1_to_hex(note));
5848769f	443	goto end;
e397421a	444	}
5848769f JH	445	} else {
	446	retval = for_each_note(t, 0, list_each_note, NULL);
	447	goto end;
	448	}
e397421a JH	449	}
e397421a JH	450
cd067d3b JH	451	/* show command */
cd067d3b JH	452
e397421a	453	if ((list \|\| show) && !note) {
cd067d3b	454	error("No note found for object %s.", sha1_to_hex(object));
5848769f JH	455	retval = 1;
5848769f JH	456	goto end;
cd067d3b JH	457	} else if (show) {
cd067d3b JH	458	const char *show_args[3] = {"show", sha1_to_hex(note), NULL};
5848769f JH	459	retval = execv_git_cmd(show_args);
5848769f JH	460	goto end;
cd067d3b JH	461	}
cd067d3b JH	462
2347fae5	463	/* add/append/edit/remove/prune command */
7aa4754e	464
e73bbd96	465	if ((add \|\| copy) && note) {
5848769f	466	if (!force) {
e73bbd96	467	error("Cannot %s notes. Found existing notes for object"
5848769f	468	" %s. Use '-f' to overwrite existing notes",
e73bbd96	469	argv[0], sha1_to_hex(object));
5848769f JH	470	retval = 1;
5848769f JH	471	goto end;
7aa4754e	472	}
5848769f JH	473	fprintf(stderr, "Overwriting existing notes for object %s\n",
5848769f JH	474	sha1_to_hex(object));
7aa4754e	475	}
92b3385f	476
348f199b JH	477	if (remove) {
348f199b JH	478	msg.given = 1;
0691cff7	479	msg.use_editor = 0;
348f199b	480	strbuf_reset(&(msg.buf));
cd067d3b JH	481	}
cd067d3b JH	482
d6576e1f JH	483	if (prune) {
	484	hashclr(new_note);
	485	prune_notes(t);
5848769f	486	goto commit;
e73bbd96 JH	487	} else if (copy) {
	488	const unsigned char *from_note = get_note(t, from_obj);
	489	if (!from_note) {
	490	error("Missing notes on source object %s. Cannot copy.",
	491	sha1_to_hex(from_obj));
	492	retval = 1;
	493	goto end;
	494	}
	495	hashcpy(new_note, from_note);
5848769f	496	} else
348f199b	497	create_note(object, &msg, append, note, new_note);
5848769f JH	498
	499	if (is_null_sha1(new_note))
	500	remove_note(t, object);
	501	else
	502	add_note(t, object, new_note, combine_notes_overwrite);
	503
	504	commit:
	505	snprintf(logmsg, sizeof(logmsg), "Notes %s by 'git notes %s'",
92b3385f	506	is_null_sha1(new_note) ? "removed" : "added", argv[0]);
a0b4dfa9	507	commit_notes(t, logmsg);
cd067d3b	508
5848769f	509	end:
cd067d3b	510	free_notes(t);
348f199b	511	strbuf_release(&(msg.buf));
5848769f	512	return retval;
cd067d3b	513	}