Code

4d5556e2cb5bccaf0100d9f5019e1a1c493e35e7
[git.git] / builtin / notes.c
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  */
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 #include "string-list.h"
20 #include "notes-merge.h"
22 static const char * const git_notes_usage[] = {
23         "git notes [--ref <notes_ref>] [list [<object>]]",
24         "git notes [--ref <notes_ref>] add [-f] [-m <msg> | -F <file> | (-c | -C) <object>] [<object>]",
25         "git notes [--ref <notes_ref>] copy [-f] <from-object> <to-object>",
26         "git notes [--ref <notes_ref>] append [-m <msg> | -F <file> | (-c | -C) <object>] [<object>]",
27         "git notes [--ref <notes_ref>] edit [<object>]",
28         "git notes [--ref <notes_ref>] show [<object>]",
29         "git notes [--ref <notes_ref>] merge [-v | -q] [-s <strategy> ] <notes_ref>",
30         "git notes merge --commit [-v | -q]",
31         "git notes merge --abort [-v | -q]",
32         "git notes [--ref <notes_ref>] remove [<object>]",
33         "git notes [--ref <notes_ref>] prune [-n | -v]",
34         "git notes [--ref <notes_ref>] get-ref",
35         NULL
36 };
38 static const char * const git_notes_list_usage[] = {
39         "git notes [list [<object>]]",
40         NULL
41 };
43 static const char * const git_notes_add_usage[] = {
44         "git notes add [<options>] [<object>]",
45         NULL
46 };
48 static const char * const git_notes_copy_usage[] = {
49         "git notes copy [<options>] <from-object> <to-object>",
50         "git notes copy --stdin [<from-object> <to-object>]...",
51         NULL
52 };
54 static const char * const git_notes_append_usage[] = {
55         "git notes append [<options>] [<object>]",
56         NULL
57 };
59 static const char * const git_notes_edit_usage[] = {
60         "git notes edit [<object>]",
61         NULL
62 };
64 static const char * const git_notes_show_usage[] = {
65         "git notes show [<object>]",
66         NULL
67 };
69 static const char * const git_notes_merge_usage[] = {
70         "git notes merge [<options>] <notes_ref>",
71         "git notes merge --commit [<options>]",
72         "git notes merge --abort [<options>]",
73         NULL
74 };
76 static const char * const git_notes_remove_usage[] = {
77         "git notes remove [<object>]",
78         NULL
79 };
81 static const char * const git_notes_prune_usage[] = {
82         "git notes prune [<options>]",
83         NULL
84 };
86 static const char * const git_notes_get_ref_usage[] = {
87         "git notes get-ref",
88         NULL
89 };
91 static const char note_template[] =
92         "\n"
93         "#\n"
94         "# Write/edit the notes for the following object:\n"
95         "#\n";
97 struct msg_arg {
98         int given;
99         int use_editor;
100         struct strbuf buf;
101 };
103 static void expand_notes_ref(struct strbuf *sb)
105         if (!prefixcmp(sb->buf, "refs/notes/"))
106                 return; /* we're happy */
107         else if (!prefixcmp(sb->buf, "notes/"))
108                 strbuf_insert(sb, 0, "refs/", 5);
109         else
110                 strbuf_insert(sb, 0, "refs/notes/", 11);
113 static int list_each_note(const unsigned char *object_sha1,
114                 const unsigned char *note_sha1, char *note_path,
115                 void *cb_data)
117         printf("%s %s\n", sha1_to_hex(note_sha1), sha1_to_hex(object_sha1));
118         return 0;
121 static void write_note_data(int fd, const unsigned char *sha1)
123         unsigned long size;
124         enum object_type type;
125         char *buf = read_sha1_file(sha1, &type, &size);
126         if (buf) {
127                 if (size)
128                         write_or_die(fd, buf, size);
129                 free(buf);
130         }
133 static void write_commented_object(int fd, const unsigned char *object)
135         const char *show_args[5] =
136                 {"show", "--stat", "--no-notes", sha1_to_hex(object), NULL};
137         struct child_process show;
138         struct strbuf buf = STRBUF_INIT;
139         FILE *show_out;
141         /* Invoke "git show --stat --no-notes $object" */
142         memset(&show, 0, sizeof(show));
143         show.argv = show_args;
144         show.no_stdin = 1;
145         show.out = -1;
146         show.err = 0;
147         show.git_cmd = 1;
148         if (start_command(&show))
149                 die("unable to start 'show' for object '%s'",
150                     sha1_to_hex(object));
152         /* Open the output as FILE* so strbuf_getline() can be used. */
153         show_out = xfdopen(show.out, "r");
154         if (show_out == NULL)
155                 die_errno("can't fdopen 'show' output fd");
157         /* Prepend "# " to each output line and write result to 'fd' */
158         while (strbuf_getline(&buf, show_out, '\n') != EOF) {
159                 write_or_die(fd, "# ", 2);
160                 write_or_die(fd, buf.buf, buf.len);
161                 write_or_die(fd, "\n", 1);
162         }
163         strbuf_release(&buf);
164         if (fclose(show_out))
165                 die_errno("failed to close pipe to 'show' for object '%s'",
166                           sha1_to_hex(object));
167         if (finish_command(&show))
168                 die("failed to finish 'show' for object '%s'",
169                     sha1_to_hex(object));
172 static void create_note(const unsigned char *object, struct msg_arg *msg,
173                         int append_only, const unsigned char *prev,
174                         unsigned char *result)
176         char *path = NULL;
178         if (msg->use_editor || !msg->given) {
179                 int fd;
181                 /* write the template message before editing: */
182                 path = git_pathdup("NOTES_EDITMSG");
183                 fd = open(path, O_CREAT | O_TRUNC | O_WRONLY, 0600);
184                 if (fd < 0)
185                         die_errno("could not create file '%s'", path);
187                 if (msg->given)
188                         write_or_die(fd, msg->buf.buf, msg->buf.len);
189                 else if (prev && !append_only)
190                         write_note_data(fd, prev);
191                 write_or_die(fd, note_template, strlen(note_template));
193                 write_commented_object(fd, object);
195                 close(fd);
196                 strbuf_reset(&(msg->buf));
198                 if (launch_editor(path, &(msg->buf), NULL)) {
199                         die("Please supply the note contents using either -m" \
200                             " or -F option");
201                 }
202                 stripspace(&(msg->buf), 1);
203         }
205         if (prev && append_only) {
206                 /* Append buf to previous note contents */
207                 unsigned long size;
208                 enum object_type type;
209                 char *prev_buf = read_sha1_file(prev, &type, &size);
211                 strbuf_grow(&(msg->buf), size + 1);
212                 if (msg->buf.len && prev_buf && size)
213                         strbuf_insert(&(msg->buf), 0, "\n", 1);
214                 if (prev_buf && size)
215                         strbuf_insert(&(msg->buf), 0, prev_buf, size);
216                 free(prev_buf);
217         }
219         if (!msg->buf.len) {
220                 fprintf(stderr, "Removing note for object %s\n",
221                         sha1_to_hex(object));
222                 hashclr(result);
223         } else {
224                 if (write_sha1_file(msg->buf.buf, msg->buf.len, blob_type, result)) {
225                         error("unable to write note object");
226                         if (path)
227                                 error("The note contents has been left in %s",
228                                       path);
229                         exit(128);
230                 }
231         }
233         if (path) {
234                 unlink_or_warn(path);
235                 free(path);
236         }
239 static int parse_msg_arg(const struct option *opt, const char *arg, int unset)
241         struct msg_arg *msg = opt->value;
243         strbuf_grow(&(msg->buf), strlen(arg) + 2);
244         if (msg->buf.len)
245                 strbuf_addch(&(msg->buf), '\n');
246         strbuf_addstr(&(msg->buf), arg);
247         stripspace(&(msg->buf), 0);
249         msg->given = 1;
250         return 0;
253 static int parse_file_arg(const struct option *opt, const char *arg, int unset)
255         struct msg_arg *msg = opt->value;
257         if (msg->buf.len)
258                 strbuf_addch(&(msg->buf), '\n');
259         if (!strcmp(arg, "-")) {
260                 if (strbuf_read(&(msg->buf), 0, 1024) < 0)
261                         die_errno("cannot read '%s'", arg);
262         } else if (strbuf_read_file(&(msg->buf), arg, 1024) < 0)
263                 die_errno("could not open or read '%s'", arg);
264         stripspace(&(msg->buf), 0);
266         msg->given = 1;
267         return 0;
270 static int parse_reuse_arg(const struct option *opt, const char *arg, int unset)
272         struct msg_arg *msg = opt->value;
273         char *buf;
274         unsigned char object[20];
275         enum object_type type;
276         unsigned long len;
278         if (msg->buf.len)
279                 strbuf_addch(&(msg->buf), '\n');
281         if (get_sha1(arg, object))
282                 die("Failed to resolve '%s' as a valid ref.", arg);
283         if (!(buf = read_sha1_file(object, &type, &len)) || !len) {
284                 free(buf);
285                 die("Failed to read object '%s'.", arg);;
286         }
287         strbuf_add(&(msg->buf), buf, len);
288         free(buf);
290         msg->given = 1;
291         return 0;
294 static int parse_reedit_arg(const struct option *opt, const char *arg, int unset)
296         struct msg_arg *msg = opt->value;
297         msg->use_editor = 1;
298         return parse_reuse_arg(opt, arg, unset);
301 void commit_notes(struct notes_tree *t, const char *msg)
303         struct strbuf buf = STRBUF_INIT;
304         unsigned char commit_sha1[20];
306         if (!t)
307                 t = &default_notes_tree;
308         if (!t->initialized || !t->ref || !*t->ref)
309                 die("Cannot commit uninitialized/unreferenced notes tree");
310         if (!t->dirty)
311                 return; /* don't have to commit an unchanged tree */
313         /* Prepare commit message and reflog message */
314         strbuf_addstr(&buf, "notes: "); /* commit message starts at index 7 */
315         strbuf_addstr(&buf, msg);
316         if (buf.buf[buf.len - 1] != '\n')
317                 strbuf_addch(&buf, '\n'); /* Make sure msg ends with newline */
319         create_notes_commit(t, NULL, buf.buf + 7, commit_sha1);
320         update_ref(buf.buf, t->ref, commit_sha1, NULL, 0, DIE_ON_ERR);
322         strbuf_release(&buf);
325 combine_notes_fn parse_combine_notes_fn(const char *v)
327         if (!strcasecmp(v, "overwrite"))
328                 return combine_notes_overwrite;
329         else if (!strcasecmp(v, "ignore"))
330                 return combine_notes_ignore;
331         else if (!strcasecmp(v, "concatenate"))
332                 return combine_notes_concatenate;
333         else if (!strcasecmp(v, "cat_sort_uniq"))
334                 return combine_notes_cat_sort_uniq;
335         else
336                 return NULL;
339 static int notes_rewrite_config(const char *k, const char *v, void *cb)
341         struct notes_rewrite_cfg *c = cb;
342         if (!prefixcmp(k, "notes.rewrite.") && !strcmp(k+14, c->cmd)) {
343                 c->enabled = git_config_bool(k, v);
344                 return 0;
345         } else if (!c->mode_from_env && !strcmp(k, "notes.rewritemode")) {
346                 if (!v)
347                         config_error_nonbool(k);
348                 c->combine = parse_combine_notes_fn(v);
349                 if (!c->combine) {
350                         error("Bad notes.rewriteMode value: '%s'", v);
351                         return 1;
352                 }
353                 return 0;
354         } else if (!c->refs_from_env && !strcmp(k, "notes.rewriteref")) {
355                 /* note that a refs/ prefix is implied in the
356                  * underlying for_each_glob_ref */
357                 if (!prefixcmp(v, "refs/notes/"))
358                         string_list_add_refs_by_glob(c->refs, v);
359                 else
360                         warning("Refusing to rewrite notes in %s"
361                                 " (outside of refs/notes/)", v);
362                 return 0;
363         }
365         return 0;
369 struct notes_rewrite_cfg *init_copy_notes_for_rewrite(const char *cmd)
371         struct notes_rewrite_cfg *c = xmalloc(sizeof(struct notes_rewrite_cfg));
372         const char *rewrite_mode_env = getenv(GIT_NOTES_REWRITE_MODE_ENVIRONMENT);
373         const char *rewrite_refs_env = getenv(GIT_NOTES_REWRITE_REF_ENVIRONMENT);
374         c->cmd = cmd;
375         c->enabled = 1;
376         c->combine = combine_notes_concatenate;
377         c->refs = xcalloc(1, sizeof(struct string_list));
378         c->refs->strdup_strings = 1;
379         c->refs_from_env = 0;
380         c->mode_from_env = 0;
381         if (rewrite_mode_env) {
382                 c->mode_from_env = 1;
383                 c->combine = parse_combine_notes_fn(rewrite_mode_env);
384                 if (!c->combine)
385                         error("Bad " GIT_NOTES_REWRITE_MODE_ENVIRONMENT
386                               " value: '%s'", rewrite_mode_env);
387         }
388         if (rewrite_refs_env) {
389                 c->refs_from_env = 1;
390                 string_list_add_refs_from_colon_sep(c->refs, rewrite_refs_env);
391         }
392         git_config(notes_rewrite_config, c);
393         if (!c->enabled || !c->refs->nr) {
394                 string_list_clear(c->refs, 0);
395                 free(c->refs);
396                 free(c);
397                 return NULL;
398         }
399         c->trees = load_notes_trees(c->refs);
400         string_list_clear(c->refs, 0);
401         free(c->refs);
402         return c;
405 int copy_note_for_rewrite(struct notes_rewrite_cfg *c,
406                           const unsigned char *from_obj, const unsigned char *to_obj)
408         int ret = 0;
409         int i;
410         for (i = 0; c->trees[i]; i++)
411                 ret = copy_note(c->trees[i], from_obj, to_obj, 1, c->combine) || ret;
412         return ret;
415 void finish_copy_notes_for_rewrite(struct notes_rewrite_cfg *c)
417         int i;
418         for (i = 0; c->trees[i]; i++) {
419                 commit_notes(c->trees[i], "Notes added by 'git notes copy'");
420                 free_notes(c->trees[i]);
421         }
422         free(c->trees);
423         free(c);
426 int notes_copy_from_stdin(int force, const char *rewrite_cmd)
428         struct strbuf buf = STRBUF_INIT;
429         struct notes_rewrite_cfg *c = NULL;
430         struct notes_tree *t = NULL;
431         int ret = 0;
433         if (rewrite_cmd) {
434                 c = init_copy_notes_for_rewrite(rewrite_cmd);
435                 if (!c)
436                         return 0;
437         } else {
438                 init_notes(NULL, NULL, NULL, 0);
439                 t = &default_notes_tree;
440         }
442         while (strbuf_getline(&buf, stdin, '\n') != EOF) {
443                 unsigned char from_obj[20], to_obj[20];
444                 struct strbuf **split;
445                 int err;
447                 split = strbuf_split(&buf, ' ');
448                 if (!split[0] || !split[1])
449                         die("Malformed input line: '%s'.", buf.buf);
450                 strbuf_rtrim(split[0]);
451                 strbuf_rtrim(split[1]);
452                 if (get_sha1(split[0]->buf, from_obj))
453                         die("Failed to resolve '%s' as a valid ref.", split[0]->buf);
454                 if (get_sha1(split[1]->buf, to_obj))
455                         die("Failed to resolve '%s' as a valid ref.", split[1]->buf);
457                 if (rewrite_cmd)
458                         err = copy_note_for_rewrite(c, from_obj, to_obj);
459                 else
460                         err = copy_note(t, from_obj, to_obj, force,
461                                         combine_notes_overwrite);
463                 if (err) {
464                         error("Failed to copy notes from '%s' to '%s'",
465                               split[0]->buf, split[1]->buf);
466                         ret = 1;
467                 }
469                 strbuf_list_free(split);
470         }
472         if (!rewrite_cmd) {
473                 commit_notes(t, "Notes added by 'git notes copy'");
474                 free_notes(t);
475         } else {
476                 finish_copy_notes_for_rewrite(c);
477         }
478         return ret;
481 static struct notes_tree *init_notes_check(const char *subcommand)
483         struct notes_tree *t;
484         init_notes(NULL, NULL, NULL, 0);
485         t = &default_notes_tree;
487         if (prefixcmp(t->ref, "refs/notes/"))
488                 die("Refusing to %s notes in %s (outside of refs/notes/)",
489                     subcommand, t->ref);
490         return t;
493 static int list(int argc, const char **argv, const char *prefix)
495         struct notes_tree *t;
496         unsigned char object[20];
497         const unsigned char *note;
498         int retval = -1;
499         struct option options[] = {
500                 OPT_END()
501         };
503         if (argc)
504                 argc = parse_options(argc, argv, prefix, options,
505                                      git_notes_list_usage, 0);
507         if (1 < argc) {
508                 error("too many parameters");
509                 usage_with_options(git_notes_list_usage, options);
510         }
512         t = init_notes_check("list");
513         if (argc) {
514                 if (get_sha1(argv[0], object))
515                         die("Failed to resolve '%s' as a valid ref.", argv[0]);
516                 note = get_note(t, object);
517                 if (note) {
518                         puts(sha1_to_hex(note));
519                         retval = 0;
520                 } else
521                         retval = error("No note found for object %s.",
522                                        sha1_to_hex(object));
523         } else
524                 retval = for_each_note(t, 0, list_each_note, NULL);
526         free_notes(t);
527         return retval;
530 static int add(int argc, const char **argv, const char *prefix)
532         int retval = 0, force = 0;
533         const char *object_ref;
534         struct notes_tree *t;
535         unsigned char object[20], new_note[20];
536         char logmsg[100];
537         const unsigned char *note;
538         struct msg_arg msg = { 0, 0, STRBUF_INIT };
539         struct option options[] = {
540                 { OPTION_CALLBACK, 'm', "message", &msg, "MSG",
541                         "note contents as a string", PARSE_OPT_NONEG,
542                         parse_msg_arg},
543                 { OPTION_CALLBACK, 'F', "file", &msg, "FILE",
544                         "note contents in a file", PARSE_OPT_NONEG,
545                         parse_file_arg},
546                 { OPTION_CALLBACK, 'c', "reedit-message", &msg, "OBJECT",
547                         "reuse and edit specified note object", PARSE_OPT_NONEG,
548                         parse_reedit_arg},
549                 { OPTION_CALLBACK, 'C', "reuse-message", &msg, "OBJECT",
550                         "reuse specified note object", PARSE_OPT_NONEG,
551                         parse_reuse_arg},
552                 OPT__FORCE(&force, "replace existing notes"),
553                 OPT_END()
554         };
556         argc = parse_options(argc, argv, prefix, options, git_notes_add_usage,
557                              0);
559         if (1 < argc) {
560                 error("too many parameters");
561                 usage_with_options(git_notes_add_usage, options);
562         }
564         object_ref = argc ? argv[0] : "HEAD";
566         if (get_sha1(object_ref, object))
567                 die("Failed to resolve '%s' as a valid ref.", object_ref);
569         t = init_notes_check("add");
570         note = get_note(t, object);
572         if (note) {
573                 if (!force) {
574                         retval = error("Cannot add notes. Found existing notes "
575                                        "for object %s. Use '-f' to overwrite "
576                                        "existing notes", sha1_to_hex(object));
577                         goto out;
578                 }
579                 fprintf(stderr, "Overwriting existing notes for object %s\n",
580                         sha1_to_hex(object));
581         }
583         create_note(object, &msg, 0, note, new_note);
585         if (is_null_sha1(new_note))
586                 remove_note(t, object);
587         else if (add_note(t, object, new_note, combine_notes_overwrite))
588                 die("BUG: combine_notes_overwrite failed");
590         snprintf(logmsg, sizeof(logmsg), "Notes %s by 'git notes %s'",
591                  is_null_sha1(new_note) ? "removed" : "added", "add");
592         commit_notes(t, logmsg);
593 out:
594         free_notes(t);
595         strbuf_release(&(msg.buf));
596         return retval;
599 static int copy(int argc, const char **argv, const char *prefix)
601         int retval = 0, force = 0, from_stdin = 0;
602         const unsigned char *from_note, *note;
603         const char *object_ref;
604         unsigned char object[20], from_obj[20];
605         struct notes_tree *t;
606         const char *rewrite_cmd = NULL;
607         struct option options[] = {
608                 OPT__FORCE(&force, "replace existing notes"),
609                 OPT_BOOLEAN(0, "stdin", &from_stdin, "read objects from stdin"),
610                 OPT_STRING(0, "for-rewrite", &rewrite_cmd, "command",
611                            "load rewriting config for <command> (implies "
612                            "--stdin)"),
613                 OPT_END()
614         };
616         argc = parse_options(argc, argv, prefix, options, git_notes_copy_usage,
617                              0);
619         if (from_stdin || rewrite_cmd) {
620                 if (argc) {
621                         error("too many parameters");
622                         usage_with_options(git_notes_copy_usage, options);
623                 } else {
624                         return notes_copy_from_stdin(force, rewrite_cmd);
625                 }
626         }
628         if (argc < 2) {
629                 error("too few parameters");
630                 usage_with_options(git_notes_copy_usage, options);
631         }
632         if (2 < argc) {
633                 error("too many parameters");
634                 usage_with_options(git_notes_copy_usage, options);
635         }
637         if (get_sha1(argv[0], from_obj))
638                 die("Failed to resolve '%s' as a valid ref.", argv[0]);
640         object_ref = 1 < argc ? argv[1] : "HEAD";
642         if (get_sha1(object_ref, object))
643                 die("Failed to resolve '%s' as a valid ref.", object_ref);
645         t = init_notes_check("copy");
646         note = get_note(t, object);
648         if (note) {
649                 if (!force) {
650                         retval = error("Cannot copy notes. Found existing "
651                                        "notes for object %s. Use '-f' to "
652                                        "overwrite existing notes",
653                                        sha1_to_hex(object));
654                         goto out;
655                 }
656                 fprintf(stderr, "Overwriting existing notes for object %s\n",
657                         sha1_to_hex(object));
658         }
660         from_note = get_note(t, from_obj);
661         if (!from_note) {
662                 retval = error("Missing notes on source object %s. Cannot "
663                                "copy.", sha1_to_hex(from_obj));
664                 goto out;
665         }
667         if (add_note(t, object, from_note, combine_notes_overwrite))
668                 die("BUG: combine_notes_overwrite failed");
669         commit_notes(t, "Notes added by 'git notes copy'");
670 out:
671         free_notes(t);
672         return retval;
675 static int append_edit(int argc, const char **argv, const char *prefix)
677         const char *object_ref;
678         struct notes_tree *t;
679         unsigned char object[20], new_note[20];
680         const unsigned char *note;
681         char logmsg[100];
682         const char * const *usage;
683         struct msg_arg msg = { 0, 0, STRBUF_INIT };
684         struct option options[] = {
685                 { OPTION_CALLBACK, 'm', "message", &msg, "MSG",
686                         "note contents as a string", PARSE_OPT_NONEG,
687                         parse_msg_arg},
688                 { OPTION_CALLBACK, 'F', "file", &msg, "FILE",
689                         "note contents in a file", PARSE_OPT_NONEG,
690                         parse_file_arg},
691                 { OPTION_CALLBACK, 'c', "reedit-message", &msg, "OBJECT",
692                         "reuse and edit specified note object", PARSE_OPT_NONEG,
693                         parse_reedit_arg},
694                 { OPTION_CALLBACK, 'C', "reuse-message", &msg, "OBJECT",
695                         "reuse specified note object", PARSE_OPT_NONEG,
696                         parse_reuse_arg},
697                 OPT_END()
698         };
699         int edit = !strcmp(argv[0], "edit");
701         usage = edit ? git_notes_edit_usage : git_notes_append_usage;
702         argc = parse_options(argc, argv, prefix, options, usage,
703                              PARSE_OPT_KEEP_ARGV0);
705         if (2 < argc) {
706                 error("too many parameters");
707                 usage_with_options(usage, options);
708         }
710         if (msg.given && edit)
711                 fprintf(stderr, "The -m/-F/-c/-C options have been deprecated "
712                         "for the 'edit' subcommand.\n"
713                         "Please use 'git notes add -f -m/-F/-c/-C' instead.\n");
715         object_ref = 1 < argc ? argv[1] : "HEAD";
717         if (get_sha1(object_ref, object))
718                 die("Failed to resolve '%s' as a valid ref.", object_ref);
720         t = init_notes_check(argv[0]);
721         note = get_note(t, object);
723         create_note(object, &msg, !edit, note, new_note);
725         if (is_null_sha1(new_note))
726                 remove_note(t, object);
727         else if (add_note(t, object, new_note, combine_notes_overwrite))
728                 die("BUG: combine_notes_overwrite failed");
730         snprintf(logmsg, sizeof(logmsg), "Notes %s by 'git notes %s'",
731                  is_null_sha1(new_note) ? "removed" : "added", argv[0]);
732         commit_notes(t, logmsg);
733         free_notes(t);
734         strbuf_release(&(msg.buf));
735         return 0;
738 static int show(int argc, const char **argv, const char *prefix)
740         const char *object_ref;
741         struct notes_tree *t;
742         unsigned char object[20];
743         const unsigned char *note;
744         int retval;
745         struct option options[] = {
746                 OPT_END()
747         };
749         argc = parse_options(argc, argv, prefix, options, git_notes_show_usage,
750                              0);
752         if (1 < argc) {
753                 error("too many parameters");
754                 usage_with_options(git_notes_show_usage, options);
755         }
757         object_ref = argc ? argv[0] : "HEAD";
759         if (get_sha1(object_ref, object))
760                 die("Failed to resolve '%s' as a valid ref.", object_ref);
762         t = init_notes_check("show");
763         note = get_note(t, object);
765         if (!note)
766                 retval = error("No note found for object %s.",
767                                sha1_to_hex(object));
768         else {
769                 const char *show_args[3] = {"show", sha1_to_hex(note), NULL};
770                 retval = execv_git_cmd(show_args);
771         }
772         free_notes(t);
773         return retval;
776 static int merge_abort(struct notes_merge_options *o)
778         int ret = 0;
780         /*
781          * Remove .git/NOTES_MERGE_PARTIAL and .git/NOTES_MERGE_REF, and call
782          * notes_merge_abort() to remove .git/NOTES_MERGE_WORKTREE.
783          */
785         if (delete_ref("NOTES_MERGE_PARTIAL", NULL, 0))
786                 ret += error("Failed to delete ref NOTES_MERGE_PARTIAL");
787         if (delete_ref("NOTES_MERGE_REF", NULL, REF_NODEREF))
788                 ret += error("Failed to delete ref NOTES_MERGE_REF");
789         if (notes_merge_abort(o))
790                 ret += error("Failed to remove 'git notes merge' worktree");
791         return ret;
794 static int merge_commit(struct notes_merge_options *o)
796         struct strbuf msg = STRBUF_INIT;
797         unsigned char sha1[20], parent_sha1[20];
798         struct notes_tree *t;
799         struct commit *partial;
800         struct pretty_print_context pretty_ctx;
802         /*
803          * Read partial merge result from .git/NOTES_MERGE_PARTIAL,
804          * and target notes ref from .git/NOTES_MERGE_REF.
805          */
807         if (get_sha1("NOTES_MERGE_PARTIAL", sha1))
808                 die("Failed to read ref NOTES_MERGE_PARTIAL");
809         else if (!(partial = lookup_commit_reference(sha1)))
810                 die("Could not find commit from NOTES_MERGE_PARTIAL.");
811         else if (parse_commit(partial))
812                 die("Could not parse commit from NOTES_MERGE_PARTIAL.");
814         if (partial->parents)
815                 hashcpy(parent_sha1, partial->parents->item->object.sha1);
816         else
817                 hashclr(parent_sha1);
819         t = xcalloc(1, sizeof(struct notes_tree));
820         init_notes(t, "NOTES_MERGE_PARTIAL", combine_notes_overwrite, 0);
822         o->local_ref = resolve_ref("NOTES_MERGE_REF", sha1, 0, 0);
823         if (!o->local_ref)
824                 die("Failed to resolve NOTES_MERGE_REF");
826         if (notes_merge_commit(o, t, partial, sha1))
827                 die("Failed to finalize notes merge");
829         /* Reuse existing commit message in reflog message */
830         memset(&pretty_ctx, 0, sizeof(pretty_ctx));
831         format_commit_message(partial, "%s", &msg, &pretty_ctx);
832         strbuf_trim(&msg);
833         strbuf_insert(&msg, 0, "notes: ", 7);
834         update_ref(msg.buf, o->local_ref, sha1,
835                    is_null_sha1(parent_sha1) ? NULL : parent_sha1,
836                    0, DIE_ON_ERR);
838         free_notes(t);
839         strbuf_release(&msg);
840         return merge_abort(o);
843 static int merge(int argc, const char **argv, const char *prefix)
845         struct strbuf remote_ref = STRBUF_INIT, msg = STRBUF_INIT;
846         unsigned char result_sha1[20];
847         struct notes_tree *t;
848         struct notes_merge_options o;
849         int do_merge = 0, do_commit = 0, do_abort = 0;
850         int verbosity = 0, result;
851         const char *strategy = NULL;
852         struct option options[] = {
853                 OPT_GROUP("General options"),
854                 OPT__VERBOSITY(&verbosity),
855                 OPT_GROUP("Merge options"),
856                 OPT_STRING('s', "strategy", &strategy, "strategy",
857                            "resolve notes conflicts using the given strategy "
858                            "(manual/ours/theirs/union/cat_sort_uniq)"),
859                 OPT_GROUP("Committing unmerged notes"),
860                 { OPTION_BOOLEAN, 0, "commit", &do_commit, NULL,
861                         "finalize notes merge by committing unmerged notes",
862                         PARSE_OPT_NOARG | PARSE_OPT_NONEG },
863                 OPT_GROUP("Aborting notes merge resolution"),
864                 { OPTION_BOOLEAN, 0, "abort", &do_abort, NULL,
865                         "abort notes merge",
866                         PARSE_OPT_NOARG | PARSE_OPT_NONEG },
867                 OPT_END()
868         };
870         argc = parse_options(argc, argv, prefix, options,
871                              git_notes_merge_usage, 0);
873         if (strategy || do_commit + do_abort == 0)
874                 do_merge = 1;
875         if (do_merge + do_commit + do_abort != 1) {
876                 error("cannot mix --commit, --abort or -s/--strategy");
877                 usage_with_options(git_notes_merge_usage, options);
878         }
880         if (do_merge && argc != 1) {
881                 error("Must specify a notes ref to merge");
882                 usage_with_options(git_notes_merge_usage, options);
883         } else if (!do_merge && argc) {
884                 error("too many parameters");
885                 usage_with_options(git_notes_merge_usage, options);
886         }
888         init_notes_merge_options(&o);
889         o.verbosity = verbosity + NOTES_MERGE_VERBOSITY_DEFAULT;
891         if (do_abort)
892                 return merge_abort(&o);
893         if (do_commit)
894                 return merge_commit(&o);
896         o.local_ref = default_notes_ref();
897         strbuf_addstr(&remote_ref, argv[0]);
898         expand_notes_ref(&remote_ref);
899         o.remote_ref = remote_ref.buf;
901         if (strategy) {
902                 if (!strcmp(strategy, "manual"))
903                         o.strategy = NOTES_MERGE_RESOLVE_MANUAL;
904                 else if (!strcmp(strategy, "ours"))
905                         o.strategy = NOTES_MERGE_RESOLVE_OURS;
906                 else if (!strcmp(strategy, "theirs"))
907                         o.strategy = NOTES_MERGE_RESOLVE_THEIRS;
908                 else if (!strcmp(strategy, "union"))
909                         o.strategy = NOTES_MERGE_RESOLVE_UNION;
910                 else if (!strcmp(strategy, "cat_sort_uniq"))
911                         o.strategy = NOTES_MERGE_RESOLVE_CAT_SORT_UNIQ;
912                 else {
913                         error("Unknown -s/--strategy: %s", strategy);
914                         usage_with_options(git_notes_merge_usage, options);
915                 }
916         }
918         t = init_notes_check("merge");
920         strbuf_addf(&msg, "notes: Merged notes from %s into %s",
921                     remote_ref.buf, default_notes_ref());
922         strbuf_add(&(o.commit_msg), msg.buf + 7, msg.len - 7); /* skip "notes: " */
924         result = notes_merge(&o, t, result_sha1);
926         if (result >= 0) /* Merge resulted (trivially) in result_sha1 */
927                 /* Update default notes ref with new commit */
928                 update_ref(msg.buf, default_notes_ref(), result_sha1, NULL,
929                            0, DIE_ON_ERR);
930         else { /* Merge has unresolved conflicts */
931                 /* Update .git/NOTES_MERGE_PARTIAL with partial merge result */
932                 update_ref(msg.buf, "NOTES_MERGE_PARTIAL", result_sha1, NULL,
933                            0, DIE_ON_ERR);
934                 /* Store ref-to-be-updated into .git/NOTES_MERGE_REF */
935                 if (create_symref("NOTES_MERGE_REF", default_notes_ref(), NULL))
936                         die("Failed to store link to current notes ref (%s)",
937                             default_notes_ref());
938                 printf("Automatic notes merge failed. Fix conflicts in %s and "
939                        "commit the result with 'git notes merge --commit', or "
940                        "abort the merge with 'git notes merge --abort'.\n",
941                        git_path(NOTES_MERGE_WORKTREE));
942         }
944         free_notes(t);
945         strbuf_release(&remote_ref);
946         strbuf_release(&msg);
947         return result < 0; /* return non-zero on conflicts */
950 static int remove_cmd(int argc, const char **argv, const char *prefix)
952         struct option options[] = {
953                 OPT_END()
954         };
955         const char *object_ref;
956         struct notes_tree *t;
957         unsigned char object[20];
958         int retval;
960         argc = parse_options(argc, argv, prefix, options,
961                              git_notes_remove_usage, 0);
963         if (1 < argc) {
964                 error("too many parameters");
965                 usage_with_options(git_notes_remove_usage, options);
966         }
968         object_ref = argc ? argv[0] : "HEAD";
970         if (get_sha1(object_ref, object))
971                 die("Failed to resolve '%s' as a valid ref.", object_ref);
973         t = init_notes_check("remove");
975         retval = remove_note(t, object);
976         if (retval)
977                 fprintf(stderr, "Object %s has no note\n", sha1_to_hex(object));
978         else {
979                 fprintf(stderr, "Removing note for object %s\n",
980                         sha1_to_hex(object));
982                 commit_notes(t, "Notes removed by 'git notes remove'");
983         }
984         free_notes(t);
985         return retval;
988 static int prune(int argc, const char **argv, const char *prefix)
990         struct notes_tree *t;
991         int show_only = 0, verbose = 0;
992         struct option options[] = {
993                 OPT__DRY_RUN(&show_only, "do not remove, show only"),
994                 OPT__VERBOSE(&verbose, "report pruned notes"),
995                 OPT_END()
996         };
998         argc = parse_options(argc, argv, prefix, options, git_notes_prune_usage,
999                              0);
1001         if (argc) {
1002                 error("too many parameters");
1003                 usage_with_options(git_notes_prune_usage, options);
1004         }
1006         t = init_notes_check("prune");
1008         prune_notes(t, (verbose ? NOTES_PRUNE_VERBOSE : 0) |
1009                 (show_only ? NOTES_PRUNE_VERBOSE|NOTES_PRUNE_DRYRUN : 0) );
1010         if (!show_only)
1011                 commit_notes(t, "Notes removed by 'git notes prune'");
1012         free_notes(t);
1013         return 0;
1016 static int get_ref(int argc, const char **argv, const char *prefix)
1018         struct option options[] = { OPT_END() };
1019         argc = parse_options(argc, argv, prefix, options,
1020                              git_notes_get_ref_usage, 0);
1022         if (argc) {
1023                 error("too many parameters");
1024                 usage_with_options(git_notes_get_ref_usage, options);
1025         }
1027         puts(default_notes_ref());
1028         return 0;
1031 int cmd_notes(int argc, const char **argv, const char *prefix)
1033         int result;
1034         const char *override_notes_ref = NULL;
1035         struct option options[] = {
1036                 OPT_STRING(0, "ref", &override_notes_ref, "notes_ref",
1037                            "use notes from <notes_ref>"),
1038                 OPT_END()
1039         };
1041         git_config(git_default_config, NULL);
1042         argc = parse_options(argc, argv, prefix, options, git_notes_usage,
1043                              PARSE_OPT_STOP_AT_NON_OPTION);
1045         if (override_notes_ref) {
1046                 struct strbuf sb = STRBUF_INIT;
1047                 strbuf_addstr(&sb, override_notes_ref);
1048                 expand_notes_ref(&sb);
1049                 setenv("GIT_NOTES_REF", sb.buf, 1);
1050                 strbuf_release(&sb);
1051         }
1053         if (argc < 1 || !strcmp(argv[0], "list"))
1054                 result = list(argc, argv, prefix);
1055         else if (!strcmp(argv[0], "add"))
1056                 result = add(argc, argv, prefix);
1057         else if (!strcmp(argv[0], "copy"))
1058                 result = copy(argc, argv, prefix);
1059         else if (!strcmp(argv[0], "append") || !strcmp(argv[0], "edit"))
1060                 result = append_edit(argc, argv, prefix);
1061         else if (!strcmp(argv[0], "show"))
1062                 result = show(argc, argv, prefix);
1063         else if (!strcmp(argv[0], "merge"))
1064                 result = merge(argc, argv, prefix);
1065         else if (!strcmp(argv[0], "remove"))
1066                 result = remove_cmd(argc, argv, prefix);
1067         else if (!strcmp(argv[0], "prune"))
1068                 result = prune(argc, argv, prefix);
1069         else if (!strcmp(argv[0], "get-ref"))
1070                 result = get_ref(argc, argv, prefix);
1071         else {
1072                 result = error("Unknown subcommand: %s", argv[0]);
1073                 usage_with_options(git_notes_usage, options);
1074         }
1076         return result ? 1 : 0;