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Commit | Line | Data |
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55071ea2 PK |
1 | /* |
2 | * "git rebase" builtin command | |
3 | * | |
4 | * Copyright (c) 2018 Pratik Karki | |
5 | */ | |
6 | ||
f8adbec9 | 7 | #define USE_THE_INDEX_COMPATIBILITY_MACROS |
55071ea2 PK |
8 | #include "builtin.h" |
9 | #include "run-command.h" | |
10 | #include "exec-cmd.h" | |
dbbcd44f | 11 | #include "strvec.h" |
55071ea2 | 12 | #include "dir.h" |
ac7f467f PK |
13 | #include "packfile.h" |
14 | #include "refs.h" | |
15 | #include "quote.h" | |
16 | #include "config.h" | |
17 | #include "cache-tree.h" | |
18 | #include "unpack-trees.h" | |
19 | #include "lockfile.h" | |
f28d40d3 | 20 | #include "parse-options.h" |
075bc852 | 21 | #include "commit.h" |
bff014da | 22 | #include "diff.h" |
e0333e5c | 23 | #include "wt-status.h" |
9a48a615 | 24 | #include "revision.h" |
e0720a38 | 25 | #include "commit-reach.h" |
122420c2 | 26 | #include "rerere.h" |
5aec9271 | 27 | #include "branch.h" |
0609b741 PW |
28 | #include "sequencer.h" |
29 | #include "rebase-interactive.h" | |
b309a971 | 30 | #include "reset.h" |
25d4e02c | 31 | #include "hook.h" |
f28d40d3 | 32 | |
f213f069 | 33 | #define DEFAULT_REFLOG_ACTION "rebase" |
f28d40d3 PK |
34 | |
35 | static char const * const builtin_rebase_usage[] = { | |
414d924b DL |
36 | N_("git rebase [-i] [options] [--exec <cmd>] " |
37 | "[--onto <newbase> | --keep-base] [<upstream> [<branch>]]"), | |
f28d40d3 PK |
38 | N_("git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] " |
39 | "--root [<branch>]"), | |
40 | N_("git rebase --continue | --abort | --skip | --edit-todo"), | |
41 | NULL | |
42 | }; | |
ac7f467f | 43 | |
0609b741 PW |
44 | static GIT_PATH_FUNC(path_squash_onto, "rebase-merge/squash-onto") |
45 | static GIT_PATH_FUNC(path_interactive, "rebase-merge/interactive") | |
ac7f467f PK |
46 | static GIT_PATH_FUNC(apply_dir, "rebase-apply") |
47 | static GIT_PATH_FUNC(merge_dir, "rebase-merge") | |
48 | ||
49 | enum rebase_type { | |
50 | REBASE_UNSPECIFIED = -1, | |
10cdb9f3 | 51 | REBASE_APPLY, |
a74b3508 | 52 | REBASE_MERGE |
ac7f467f | 53 | }; |
55071ea2 | 54 | |
e98c4269 EN |
55 | enum empty_type { |
56 | EMPTY_UNSPECIFIED = -1, | |
57 | EMPTY_DROP, | |
58 | EMPTY_KEEP, | |
59 | EMPTY_ASK | |
60 | }; | |
61 | ||
ac7f467f PK |
62 | struct rebase_options { |
63 | enum rebase_type type; | |
e98c4269 | 64 | enum empty_type empty; |
8295ed69 | 65 | const char *default_backend; |
ac7f467f PK |
66 | const char *state_dir; |
67 | struct commit *upstream; | |
68 | const char *upstream_name; | |
06e4775a | 69 | const char *upstream_arg; |
ac7f467f PK |
70 | char *head_name; |
71 | struct object_id orig_head; | |
72 | struct commit *onto; | |
73 | const char *onto_name; | |
74 | const char *revisions; | |
e65123a7 | 75 | const char *switch_to; |
e1fac531 | 76 | int root, root_with_onto; |
9dba809a | 77 | struct object_id *squash_onto; |
ac7f467f PK |
78 | struct commit *restrict_revision; |
79 | int dont_finish_rebase; | |
b4c8eb02 PK |
80 | enum { |
81 | REBASE_NO_QUIET = 1<<0, | |
bff014da PK |
82 | REBASE_VERBOSE = 1<<1, |
83 | REBASE_DIFFSTAT = 1<<2, | |
1ed9c14f | 84 | REBASE_FORCE = 1<<3, |
c54dacb5 | 85 | REBASE_INTERACTIVE_EXPLICIT = 1<<4, |
b4c8eb02 | 86 | } flags; |
22f9b7f3 | 87 | struct strvec git_am_opts; |
f9573628 | 88 | const char *action; |
73d51ed0 | 89 | int signoff; |
ead98c11 | 90 | int allow_rerere_autoupdate; |
b9cbd295 | 91 | int keep_empty; |
051910a9 | 92 | int autosquash; |
12026a41 | 93 | char *gpg_sign_opt; |
6defce2b | 94 | int autostash; |
7573cec5 | 95 | int committer_date_is_author_date; |
a3894aad | 96 | int ignore_date; |
68e46d78 | 97 | char *cmd; |
9b3a448b | 98 | int allow_empty_message; |
3c3588c7 | 99 | int rebase_merges, rebase_cousins; |
ba1905a5 | 100 | char *strategy, *strategy_opts; |
cda614e4 | 101 | struct strbuf git_format_patch_opt; |
d421afa0 | 102 | int reschedule_failed_exec; |
0fcb4f6b | 103 | int reapply_cherry_picks; |
2803d800 | 104 | int fork_point; |
ac7f467f PK |
105 | }; |
106 | ||
73fdc535 PW |
107 | #define REBASE_OPTIONS_INIT { \ |
108 | .type = REBASE_UNSPECIFIED, \ | |
e98c4269 | 109 | .empty = EMPTY_UNSPECIFIED, \ |
b9cbd295 | 110 | .keep_empty = 1, \ |
2ac0d627 | 111 | .default_backend = "merge", \ |
73fdc535 | 112 | .flags = REBASE_NO_QUIET, \ |
22f9b7f3 | 113 | .git_am_opts = STRVEC_INIT, \ |
2803d800 AH |
114 | .git_format_patch_opt = STRBUF_INIT, \ |
115 | .fork_point = -1, \ | |
73fdc535 PW |
116 | } |
117 | ||
118 | static struct replay_opts get_replay_opts(const struct rebase_options *opts) | |
119 | { | |
120 | struct replay_opts replay = REPLAY_OPTS_INIT; | |
121 | ||
122 | replay.action = REPLAY_INTERACTIVE_REBASE; | |
14c4586c | 123 | replay.strategy = NULL; |
73fdc535 PW |
124 | sequencer_init_config(&replay); |
125 | ||
126 | replay.signoff = opts->signoff; | |
127 | replay.allow_ff = !(opts->flags & REBASE_FORCE); | |
128 | if (opts->allow_rerere_autoupdate) | |
129 | replay.allow_rerere_auto = opts->allow_rerere_autoupdate; | |
130 | replay.allow_empty = 1; | |
131 | replay.allow_empty_message = opts->allow_empty_message; | |
e98c4269 EN |
132 | replay.drop_redundant_commits = (opts->empty == EMPTY_DROP); |
133 | replay.keep_redundant_commits = (opts->empty == EMPTY_KEEP); | |
55d2b6d7 | 134 | replay.quiet = !(opts->flags & REBASE_NO_QUIET); |
73fdc535 PW |
135 | replay.verbose = opts->flags & REBASE_VERBOSE; |
136 | replay.reschedule_failed_exec = opts->reschedule_failed_exec; | |
7573cec5 PW |
137 | replay.committer_date_is_author_date = |
138 | opts->committer_date_is_author_date; | |
a3894aad | 139 | replay.ignore_date = opts->ignore_date; |
73fdc535 | 140 | replay.gpg_sign = xstrdup_or_null(opts->gpg_sign_opt); |
14c4586c | 141 | if (opts->strategy) |
b54cf3a7 | 142 | replay.strategy = xstrdup_or_null(opts->strategy); |
14c4586c EN |
143 | else if (!replay.strategy && replay.default_strategy) { |
144 | replay.strategy = replay.default_strategy; | |
145 | replay.default_strategy = NULL; | |
146 | } | |
ef484add | 147 | |
0ea0847e | 148 | if (opts->strategy_opts) |
4d924528 | 149 | parse_strategy_opts(&replay, opts->strategy_opts); |
73fdc535 | 150 | |
a2dd67f1 AG |
151 | if (opts->squash_onto) { |
152 | oidcpy(&replay.squash_onto, opts->squash_onto); | |
153 | replay.have_squash_onto = 1; | |
154 | } | |
155 | ||
73fdc535 PW |
156 | return replay; |
157 | } | |
158 | ||
297b1e17 PW |
159 | enum action { |
160 | ACTION_NONE = 0, | |
161 | ACTION_CONTINUE, | |
162 | ACTION_SKIP, | |
163 | ACTION_ABORT, | |
164 | ACTION_QUIT, | |
165 | ACTION_EDIT_TODO, | |
5b55b32b | 166 | ACTION_SHOW_CURRENT_PATCH |
297b1e17 PW |
167 | }; |
168 | ||
169 | static const char *action_names[] = { "undefined", | |
170 | "continue", | |
171 | "skip", | |
172 | "abort", | |
173 | "quit", | |
174 | "edit_todo", | |
175 | "show_current_patch" }; | |
176 | ||
0609b741 PW |
177 | static int edit_todo_file(unsigned flags) |
178 | { | |
179 | const char *todo_file = rebase_path_todo(); | |
180 | struct todo_list todo_list = TODO_LIST_INIT, | |
181 | new_todo = TODO_LIST_INIT; | |
182 | int res = 0; | |
183 | ||
184 | if (strbuf_read_file(&todo_list.buf, todo_file, 0) < 0) | |
185 | return error_errno(_("could not read '%s'."), todo_file); | |
186 | ||
187 | strbuf_stripspace(&todo_list.buf, 1); | |
188 | res = edit_todo_list(the_repository, &todo_list, &new_todo, NULL, NULL, flags); | |
189 | if (!res && todo_list_write_to_file(the_repository, &new_todo, todo_file, | |
190 | NULL, NULL, -1, flags & ~(TODO_LIST_SHORTEN_IDS))) | |
191 | res = error_errno(_("could not write '%s'"), todo_file); | |
192 | ||
193 | todo_list_release(&todo_list); | |
194 | todo_list_release(&new_todo); | |
195 | ||
196 | return res; | |
197 | } | |
198 | ||
7d3488eb | 199 | static int get_revision_ranges(struct commit *upstream, struct commit *onto, |
88433023 PW |
200 | struct object_id *orig_head, char **revisions, |
201 | char **shortrevisions) | |
0609b741 | 202 | { |
7d3488eb PW |
203 | struct commit *base_rev = upstream ? upstream : onto; |
204 | const char *shorthead; | |
0609b741 | 205 | |
7d3488eb | 206 | *revisions = xstrfmt("%s...%s", oid_to_hex(&base_rev->object.oid), |
88433023 | 207 | oid_to_hex(orig_head)); |
0609b741 | 208 | |
767a9c41 | 209 | shorthead = find_unique_abbrev(orig_head, DEFAULT_ABBREV); |
0609b741 PW |
210 | |
211 | if (upstream) { | |
212 | const char *shortrev; | |
0609b741 | 213 | |
7d3488eb PW |
214 | shortrev = find_unique_abbrev(&base_rev->object.oid, |
215 | DEFAULT_ABBREV); | |
0609b741 PW |
216 | |
217 | *shortrevisions = xstrfmt("%s..%s", shortrev, shorthead); | |
218 | } else | |
219 | *shortrevisions = xstrdup(shorthead); | |
220 | ||
221 | return 0; | |
222 | } | |
223 | ||
224 | static int init_basic_state(struct replay_opts *opts, const char *head_name, | |
a2bb10d0 PW |
225 | struct commit *onto, |
226 | const struct object_id *orig_head) | |
0609b741 PW |
227 | { |
228 | FILE *interactive; | |
229 | ||
c44c2462 PW |
230 | if (!is_directory(merge_dir()) && mkdir_in_gitdir(merge_dir())) |
231 | return error_errno(_("could not create temporary %s"), merge_dir()); | |
0609b741 PW |
232 | |
233 | delete_reflog("REBASE_HEAD"); | |
234 | ||
235 | interactive = fopen(path_interactive(), "w"); | |
236 | if (!interactive) | |
237 | return error_errno(_("could not mark as interactive")); | |
238 | fclose(interactive); | |
239 | ||
240 | return write_basic_state(opts, head_name, onto, orig_head); | |
241 | } | |
242 | ||
0ea0847e PW |
243 | static void split_exec_commands(const char *cmd, struct string_list *commands) |
244 | { | |
245 | if (cmd && *cmd) { | |
246 | string_list_split(commands, cmd, '\n', -1); | |
247 | ||
248 | /* rebase.c adds a new line to cmd after every command, | |
249 | * so here the last command is always empty */ | |
250 | string_list_remove_empty_items(commands, 0); | |
251 | } | |
252 | } | |
253 | ||
254 | static int do_interactive_rebase(struct rebase_options *opts, unsigned flags) | |
0609b741 PW |
255 | { |
256 | int ret; | |
0609b741 | 257 | char *revisions = NULL, *shortrevisions = NULL; |
22f9b7f3 | 258 | struct strvec make_script_args = STRVEC_INIT; |
0609b741 | 259 | struct todo_list todo_list = TODO_LIST_INIT; |
0ea0847e PW |
260 | struct replay_opts replay = get_replay_opts(opts); |
261 | struct string_list commands = STRING_LIST_INIT_DUP; | |
0609b741 | 262 | |
767a9c41 | 263 | if (get_revision_ranges(opts->upstream, opts->onto, &opts->orig_head, |
88433023 | 264 | &revisions, &shortrevisions)) |
0609b741 PW |
265 | return -1; |
266 | ||
460bc3ce PW |
267 | if (init_basic_state(&replay, |
268 | opts->head_name ? opts->head_name : "detached HEAD", | |
a2bb10d0 | 269 | opts->onto, &opts->orig_head)) { |
0609b741 PW |
270 | free(revisions); |
271 | free(shortrevisions); | |
272 | ||
273 | return -1; | |
274 | } | |
275 | ||
0ea0847e | 276 | if (!opts->upstream && opts->squash_onto) |
33898531 | 277 | write_file(path_squash_onto(), "%s\n", |
0ea0847e | 278 | oid_to_hex(opts->squash_onto)); |
0609b741 | 279 | |
22f9b7f3 | 280 | strvec_pushl(&make_script_args, "", revisions, NULL); |
0ea0847e | 281 | if (opts->restrict_revision) |
22f9b7f3 | 282 | strvec_pushf(&make_script_args, "^%s", |
f6d8942b | 283 | oid_to_hex(&opts->restrict_revision->object.oid)); |
0609b741 PW |
284 | |
285 | ret = sequencer_make_script(the_repository, &todo_list.buf, | |
d70a9eb6 | 286 | make_script_args.nr, make_script_args.v, |
0609b741 PW |
287 | flags); |
288 | ||
289 | if (ret) | |
290 | error(_("could not generate todo list")); | |
291 | else { | |
292 | discard_cache(); | |
293 | if (todo_list_parse_insn_buffer(the_repository, todo_list.buf.buf, | |
294 | &todo_list)) | |
295 | BUG("unusable todo list"); | |
296 | ||
0ea0847e PW |
297 | split_exec_commands(opts->cmd, &commands); |
298 | ret = complete_action(the_repository, &replay, flags, | |
f3e27a02 PW |
299 | shortrevisions, opts->onto_name, opts->onto, |
300 | &opts->orig_head, &commands, opts->autosquash, | |
301 | &todo_list); | |
0609b741 PW |
302 | } |
303 | ||
0ea0847e | 304 | string_list_clear(&commands, 0); |
0609b741 PW |
305 | free(revisions); |
306 | free(shortrevisions); | |
307 | todo_list_release(&todo_list); | |
22f9b7f3 | 308 | strvec_clear(&make_script_args); |
0609b741 PW |
309 | |
310 | return ret; | |
311 | } | |
312 | ||
10cdb9f3 | 313 | static int run_sequencer_rebase(struct rebase_options *opts, |
460bc3ce PW |
314 | enum action command) |
315 | { | |
316 | unsigned flags = 0; | |
317 | int abbreviate_commands = 0, ret = 0; | |
318 | ||
319 | git_config_get_bool("rebase.abbreviatecommands", &abbreviate_commands); | |
320 | ||
b9cbd295 | 321 | flags |= opts->keep_empty ? TODO_LIST_KEEP_EMPTY : 0; |
460bc3ce PW |
322 | flags |= abbreviate_commands ? TODO_LIST_ABBREVIATE_CMDS : 0; |
323 | flags |= opts->rebase_merges ? TODO_LIST_REBASE_MERGES : 0; | |
324 | flags |= opts->rebase_cousins > 0 ? TODO_LIST_REBASE_COUSINS : 0; | |
e1fac531 | 325 | flags |= opts->root_with_onto ? TODO_LIST_ROOT_WITH_ONTO : 0; |
0fcb4f6b | 326 | flags |= opts->reapply_cherry_picks ? TODO_LIST_REAPPLY_CHERRY_PICKS : 0; |
767a4ca6 | 327 | flags |= opts->flags & REBASE_NO_QUIET ? TODO_LIST_WARN_SKIPPED_CHERRY_PICKS : 0; |
460bc3ce PW |
328 | |
329 | switch (command) { | |
330 | case ACTION_NONE: { | |
331 | if (!opts->onto && !opts->upstream) | |
332 | die(_("a base commit must be provided with --upstream or --onto")); | |
333 | ||
334 | ret = do_interactive_rebase(opts, flags); | |
335 | break; | |
336 | } | |
337 | case ACTION_SKIP: { | |
338 | struct string_list merge_rr = STRING_LIST_INIT_DUP; | |
339 | ||
340 | rerere_clear(the_repository, &merge_rr); | |
341 | } | |
342 | /* fallthrough */ | |
343 | case ACTION_CONTINUE: { | |
344 | struct replay_opts replay_opts = get_replay_opts(opts); | |
345 | ||
346 | ret = sequencer_continue(the_repository, &replay_opts); | |
347 | break; | |
348 | } | |
349 | case ACTION_EDIT_TODO: | |
350 | ret = edit_todo_file(flags); | |
351 | break; | |
352 | case ACTION_SHOW_CURRENT_PATCH: { | |
353 | struct child_process cmd = CHILD_PROCESS_INIT; | |
354 | ||
355 | cmd.git_cmd = 1; | |
22f9b7f3 | 356 | strvec_pushl(&cmd.args, "show", "REBASE_HEAD", "--", NULL); |
460bc3ce PW |
357 | ret = run_command(&cmd); |
358 | ||
359 | break; | |
360 | } | |
460bc3ce PW |
361 | default: |
362 | BUG("invalid command '%d'", command); | |
363 | } | |
364 | ||
365 | return ret; | |
366 | } | |
367 | ||
b9cbd295 | 368 | static void imply_merge(struct rebase_options *opts, const char *option); |
d48e5e21 EN |
369 | static int parse_opt_keep_empty(const struct option *opt, const char *arg, |
370 | int unset) | |
371 | { | |
372 | struct rebase_options *opts = opt->value; | |
373 | ||
374 | BUG_ON_OPT_ARG(arg); | |
375 | ||
b9cbd295 EN |
376 | imply_merge(opts, unset ? "--no-keep-empty" : "--keep-empty"); |
377 | opts->keep_empty = !unset; | |
10cdb9f3 | 378 | opts->type = REBASE_MERGE; |
d48e5e21 EN |
379 | return 0; |
380 | } | |
381 | ||
10cdb9f3 | 382 | static int is_merge(struct rebase_options *opts) |
9a48a615 | 383 | { |
a74b3508 | 384 | return opts->type == REBASE_MERGE; |
9a48a615 PK |
385 | } |
386 | ||
10cdb9f3 | 387 | static void imply_merge(struct rebase_options *opts, const char *option) |
002ee2fe PK |
388 | { |
389 | switch (opts->type) { | |
10cdb9f3 | 390 | case REBASE_APPLY: |
50ed7614 | 391 | die(_("%s requires the merge backend"), option); |
002ee2fe | 392 | break; |
10cdb9f3 | 393 | case REBASE_MERGE: |
002ee2fe | 394 | break; |
002ee2fe | 395 | default: |
10cdb9f3 | 396 | opts->type = REBASE_MERGE; /* implied */ |
002ee2fe PK |
397 | break; |
398 | } | |
399 | } | |
400 | ||
ac7f467f PK |
401 | /* Returns the filename prefixed by the state_dir */ |
402 | static const char *state_dir_path(const char *filename, struct rebase_options *opts) | |
403 | { | |
404 | static struct strbuf path = STRBUF_INIT; | |
405 | static size_t prefix_len; | |
406 | ||
407 | if (!prefix_len) { | |
408 | strbuf_addf(&path, "%s/", opts->state_dir); | |
409 | prefix_len = path.len; | |
410 | } | |
411 | ||
412 | strbuf_setlen(&path, prefix_len); | |
413 | strbuf_addstr(&path, filename); | |
414 | return path.buf; | |
415 | } | |
416 | ||
f9573628 PK |
417 | /* Initialize the rebase options from the state directory. */ |
418 | static int read_basic_state(struct rebase_options *opts) | |
419 | { | |
420 | struct strbuf head_name = STRBUF_INIT; | |
421 | struct strbuf buf = STRBUF_INIT; | |
422 | struct object_id oid; | |
423 | ||
efcf6cf0 DL |
424 | if (!read_oneliner(&head_name, state_dir_path("head-name", opts), |
425 | READ_ONELINER_WARN_MISSING) || | |
426 | !read_oneliner(&buf, state_dir_path("onto", opts), | |
427 | READ_ONELINER_WARN_MISSING)) | |
f9573628 PK |
428 | return -1; |
429 | opts->head_name = starts_with(head_name.buf, "refs/") ? | |
430 | xstrdup(head_name.buf) : NULL; | |
431 | strbuf_release(&head_name); | |
432 | if (get_oid(buf.buf, &oid)) | |
433 | return error(_("could not get 'onto': '%s'"), buf.buf); | |
434 | opts->onto = lookup_commit_or_die(&oid, buf.buf); | |
435 | ||
436 | /* | |
437 | * We always write to orig-head, but interactive rebase used to write to | |
438 | * head. Fall back to reading from head to cover for the case that the | |
439 | * user upgraded git with an ongoing interactive rebase. | |
440 | */ | |
441 | strbuf_reset(&buf); | |
442 | if (file_exists(state_dir_path("orig-head", opts))) { | |
efcf6cf0 DL |
443 | if (!read_oneliner(&buf, state_dir_path("orig-head", opts), |
444 | READ_ONELINER_WARN_MISSING)) | |
f9573628 | 445 | return -1; |
efcf6cf0 DL |
446 | } else if (!read_oneliner(&buf, state_dir_path("head", opts), |
447 | READ_ONELINER_WARN_MISSING)) | |
f9573628 PK |
448 | return -1; |
449 | if (get_oid(buf.buf, &opts->orig_head)) | |
450 | return error(_("invalid orig-head: '%s'"), buf.buf); | |
451 | ||
899b49c4 | 452 | if (file_exists(state_dir_path("quiet", opts))) |
f9573628 PK |
453 | opts->flags &= ~REBASE_NO_QUIET; |
454 | else | |
455 | opts->flags |= REBASE_NO_QUIET; | |
456 | ||
457 | if (file_exists(state_dir_path("verbose", opts))) | |
458 | opts->flags |= REBASE_VERBOSE; | |
459 | ||
73d51ed0 PK |
460 | if (file_exists(state_dir_path("signoff", opts))) { |
461 | opts->signoff = 1; | |
462 | opts->flags |= REBASE_FORCE; | |
463 | } | |
464 | ||
ead98c11 PK |
465 | if (file_exists(state_dir_path("allow_rerere_autoupdate", opts))) { |
466 | strbuf_reset(&buf); | |
efcf6cf0 DL |
467 | if (!read_oneliner(&buf, state_dir_path("allow_rerere_autoupdate", opts), |
468 | READ_ONELINER_WARN_MISSING)) | |
ead98c11 PK |
469 | return -1; |
470 | if (!strcmp(buf.buf, "--rerere-autoupdate")) | |
6023c928 | 471 | opts->allow_rerere_autoupdate = RERERE_AUTOUPDATE; |
ead98c11 | 472 | else if (!strcmp(buf.buf, "--no-rerere-autoupdate")) |
6023c928 | 473 | opts->allow_rerere_autoupdate = RERERE_NOAUTOUPDATE; |
ead98c11 PK |
474 | else |
475 | warning(_("ignoring invalid allow_rerere_autoupdate: " | |
476 | "'%s'"), buf.buf); | |
6023c928 | 477 | } |
ead98c11 | 478 | |
12026a41 PK |
479 | if (file_exists(state_dir_path("gpg_sign_opt", opts))) { |
480 | strbuf_reset(&buf); | |
efcf6cf0 DL |
481 | if (!read_oneliner(&buf, state_dir_path("gpg_sign_opt", opts), |
482 | READ_ONELINER_WARN_MISSING)) | |
12026a41 PK |
483 | return -1; |
484 | free(opts->gpg_sign_opt); | |
485 | opts->gpg_sign_opt = xstrdup(buf.buf); | |
486 | } | |
487 | ||
ba1905a5 PK |
488 | if (file_exists(state_dir_path("strategy", opts))) { |
489 | strbuf_reset(&buf); | |
efcf6cf0 DL |
490 | if (!read_oneliner(&buf, state_dir_path("strategy", opts), |
491 | READ_ONELINER_WARN_MISSING)) | |
ba1905a5 PK |
492 | return -1; |
493 | free(opts->strategy); | |
494 | opts->strategy = xstrdup(buf.buf); | |
495 | } | |
496 | ||
497 | if (file_exists(state_dir_path("strategy_opts", opts))) { | |
498 | strbuf_reset(&buf); | |
efcf6cf0 DL |
499 | if (!read_oneliner(&buf, state_dir_path("strategy_opts", opts), |
500 | READ_ONELINER_WARN_MISSING)) | |
ba1905a5 PK |
501 | return -1; |
502 | free(opts->strategy_opts); | |
503 | opts->strategy_opts = xstrdup(buf.buf); | |
504 | } | |
505 | ||
f9573628 PK |
506 | strbuf_release(&buf); |
507 | ||
508 | return 0; | |
509 | } | |
510 | ||
28dc09de | 511 | static int rebase_write_basic_state(struct rebase_options *opts) |
21853626 JS |
512 | { |
513 | write_file(state_dir_path("head-name", opts), "%s", | |
514 | opts->head_name ? opts->head_name : "detached HEAD"); | |
515 | write_file(state_dir_path("onto", opts), "%s", | |
516 | opts->onto ? oid_to_hex(&opts->onto->object.oid) : ""); | |
517 | write_file(state_dir_path("orig-head", opts), "%s", | |
518 | oid_to_hex(&opts->orig_head)); | |
8a997ed1 EN |
519 | if (!(opts->flags & REBASE_NO_QUIET)) |
520 | write_file(state_dir_path("quiet", opts), "%s", ""); | |
21853626 JS |
521 | if (opts->flags & REBASE_VERBOSE) |
522 | write_file(state_dir_path("verbose", opts), "%s", ""); | |
523 | if (opts->strategy) | |
524 | write_file(state_dir_path("strategy", opts), "%s", | |
525 | opts->strategy); | |
526 | if (opts->strategy_opts) | |
527 | write_file(state_dir_path("strategy_opts", opts), "%s", | |
528 | opts->strategy_opts); | |
6023c928 | 529 | if (opts->allow_rerere_autoupdate > 0) |
21853626 JS |
530 | write_file(state_dir_path("allow_rerere_autoupdate", opts), |
531 | "-%s-rerere-autoupdate", | |
6023c928 PW |
532 | opts->allow_rerere_autoupdate == RERERE_AUTOUPDATE ? |
533 | "" : "-no"); | |
21853626 JS |
534 | if (opts->gpg_sign_opt) |
535 | write_file(state_dir_path("gpg_sign_opt", opts), "%s", | |
536 | opts->gpg_sign_opt); | |
537 | if (opts->signoff) | |
4fe7e43c | 538 | write_file(state_dir_path("signoff", opts), "--signoff"); |
21853626 JS |
539 | |
540 | return 0; | |
541 | } | |
542 | ||
ac7f467f PK |
543 | static int finish_rebase(struct rebase_options *opts) |
544 | { | |
545 | struct strbuf dir = STRBUF_INIT; | |
d3fce47d | 546 | int ret = 0; |
ac7f467f PK |
547 | |
548 | delete_ref(NULL, "REBASE_HEAD", NULL, REF_NO_DEREF); | |
5291828d | 549 | unlink(git_path_auto_merge(the_repository)); |
86ed00af | 550 | apply_autostash(state_dir_path("autostash", opts)); |
ac7f467f | 551 | /* |
a95ce124 | 552 | * We ignore errors in 'git maintenance run --auto', since the |
ac7f467f PK |
553 | * user should see them. |
554 | */ | |
a95ce124 | 555 | run_auto_maintenance(!(opts->flags & (REBASE_NO_QUIET|REBASE_VERBOSE))); |
10cdb9f3 | 556 | if (opts->type == REBASE_MERGE) { |
d559f502 | 557 | struct replay_opts replay = REPLAY_OPTS_INIT; |
ac7f467f | 558 | |
d559f502 PW |
559 | replay.action = REPLAY_INTERACTIVE_REBASE; |
560 | ret = sequencer_remove_state(&replay); | |
561 | } else { | |
562 | strbuf_addstr(&dir, opts->state_dir); | |
563 | if (remove_dir_recursively(&dir, 0)) | |
564 | ret = error(_("could not remove '%s'"), | |
565 | opts->state_dir); | |
566 | strbuf_release(&dir); | |
567 | } | |
ac7f467f | 568 | |
d3fce47d | 569 | return ret; |
ac7f467f PK |
570 | } |
571 | ||
21853626 JS |
572 | static int move_to_original_branch(struct rebase_options *opts) |
573 | { | |
574 | struct strbuf orig_head_reflog = STRBUF_INIT, head_reflog = STRBUF_INIT; | |
575 | int ret; | |
576 | ||
577 | if (!opts->head_name) | |
578 | return 0; /* nothing to move back to */ | |
579 | ||
580 | if (!opts->onto) | |
581 | BUG("move_to_original_branch without onto"); | |
582 | ||
583 | strbuf_addf(&orig_head_reflog, "rebase finished: %s onto %s", | |
584 | opts->head_name, oid_to_hex(&opts->onto->object.oid)); | |
585 | strbuf_addf(&head_reflog, "rebase finished: returning to %s", | |
586 | opts->head_name); | |
f213f069 DL |
587 | ret = reset_head(the_repository, NULL, "", opts->head_name, |
588 | RESET_HEAD_REFS_ONLY, | |
589 | orig_head_reflog.buf, head_reflog.buf, | |
590 | DEFAULT_REFLOG_ACTION); | |
21853626 JS |
591 | |
592 | strbuf_release(&orig_head_reflog); | |
593 | strbuf_release(&head_reflog); | |
594 | return ret; | |
595 | } | |
596 | ||
bc24382c JS |
597 | static const char *resolvemsg = |
598 | N_("Resolve all conflicts manually, mark them as resolved with\n" | |
599 | "\"git add/rm <conflicted_files>\", then run \"git rebase --continue\".\n" | |
600 | "You can instead skip this commit: run \"git rebase --skip\".\n" | |
601 | "To abort and get back to the state before \"git rebase\", run " | |
602 | "\"git rebase --abort\"."); | |
603 | ||
21853626 JS |
604 | static int run_am(struct rebase_options *opts) |
605 | { | |
606 | struct child_process am = CHILD_PROCESS_INIT; | |
607 | struct child_process format_patch = CHILD_PROCESS_INIT; | |
608 | struct strbuf revisions = STRBUF_INIT; | |
609 | int status; | |
610 | char *rebased_patches; | |
611 | ||
612 | am.git_cmd = 1; | |
22f9b7f3 | 613 | strvec_push(&am.args, "am"); |
21853626 JS |
614 | |
615 | if (opts->action && !strcmp("continue", opts->action)) { | |
22f9b7f3 JK |
616 | strvec_push(&am.args, "--resolved"); |
617 | strvec_pushf(&am.args, "--resolvemsg=%s", resolvemsg); | |
21853626 | 618 | if (opts->gpg_sign_opt) |
22f9b7f3 | 619 | strvec_push(&am.args, opts->gpg_sign_opt); |
21853626 JS |
620 | status = run_command(&am); |
621 | if (status) | |
622 | return status; | |
623 | ||
624 | return move_to_original_branch(opts); | |
625 | } | |
626 | if (opts->action && !strcmp("skip", opts->action)) { | |
22f9b7f3 JK |
627 | strvec_push(&am.args, "--skip"); |
628 | strvec_pushf(&am.args, "--resolvemsg=%s", resolvemsg); | |
21853626 JS |
629 | status = run_command(&am); |
630 | if (status) | |
631 | return status; | |
632 | ||
633 | return move_to_original_branch(opts); | |
634 | } | |
635 | if (opts->action && !strcmp("show-current-patch", opts->action)) { | |
22f9b7f3 | 636 | strvec_push(&am.args, "--show-current-patch"); |
21853626 JS |
637 | return run_command(&am); |
638 | } | |
639 | ||
640 | strbuf_addf(&revisions, "%s...%s", | |
641 | oid_to_hex(opts->root ? | |
642 | /* this is now equivalent to !opts->upstream */ | |
643 | &opts->onto->object.oid : | |
644 | &opts->upstream->object.oid), | |
645 | oid_to_hex(&opts->orig_head)); | |
646 | ||
647 | rebased_patches = xstrdup(git_path("rebased-patches")); | |
648 | format_patch.out = open(rebased_patches, | |
649 | O_WRONLY | O_CREAT | O_TRUNC, 0666); | |
650 | if (format_patch.out < 0) { | |
651 | status = error_errno(_("could not open '%s' for writing"), | |
652 | rebased_patches); | |
653 | free(rebased_patches); | |
22f9b7f3 | 654 | strvec_clear(&am.args); |
21853626 JS |
655 | return status; |
656 | } | |
657 | ||
658 | format_patch.git_cmd = 1; | |
22f9b7f3 | 659 | strvec_pushl(&format_patch.args, "format-patch", "-k", "--stdout", |
f6d8942b JK |
660 | "--full-index", "--cherry-pick", "--right-only", |
661 | "--src-prefix=a/", "--dst-prefix=b/", "--no-renames", | |
662 | "--no-cover-letter", "--pretty=mboxrd", "--topo-order", | |
663 | "--no-base", NULL); | |
21853626 | 664 | if (opts->git_format_patch_opt.len) |
22f9b7f3 | 665 | strvec_split(&format_patch.args, |
f6d8942b | 666 | opts->git_format_patch_opt.buf); |
22f9b7f3 | 667 | strvec_push(&format_patch.args, revisions.buf); |
21853626 | 668 | if (opts->restrict_revision) |
22f9b7f3 | 669 | strvec_pushf(&format_patch.args, "^%s", |
f6d8942b | 670 | oid_to_hex(&opts->restrict_revision->object.oid)); |
21853626 JS |
671 | |
672 | status = run_command(&format_patch); | |
673 | if (status) { | |
674 | unlink(rebased_patches); | |
675 | free(rebased_patches); | |
22f9b7f3 | 676 | strvec_clear(&am.args); |
21853626 | 677 | |
f213f069 DL |
678 | reset_head(the_repository, &opts->orig_head, "checkout", |
679 | opts->head_name, 0, | |
680 | "HEAD", NULL, DEFAULT_REFLOG_ACTION); | |
21853626 JS |
681 | error(_("\ngit encountered an error while preparing the " |
682 | "patches to replay\n" | |
683 | "these revisions:\n" | |
684 | "\n %s\n\n" | |
685 | "As a result, git cannot rebase them."), | |
686 | opts->revisions); | |
687 | ||
688 | strbuf_release(&revisions); | |
689 | return status; | |
690 | } | |
691 | strbuf_release(&revisions); | |
692 | ||
693 | am.in = open(rebased_patches, O_RDONLY); | |
694 | if (am.in < 0) { | |
695 | status = error_errno(_("could not open '%s' for reading"), | |
696 | rebased_patches); | |
697 | free(rebased_patches); | |
22f9b7f3 | 698 | strvec_clear(&am.args); |
21853626 JS |
699 | return status; |
700 | } | |
701 | ||
d70a9eb6 | 702 | strvec_pushv(&am.args, opts->git_am_opts.v); |
22f9b7f3 JK |
703 | strvec_push(&am.args, "--rebasing"); |
704 | strvec_pushf(&am.args, "--resolvemsg=%s", resolvemsg); | |
705 | strvec_push(&am.args, "--patch-format=mboxrd"); | |
6023c928 | 706 | if (opts->allow_rerere_autoupdate == RERERE_AUTOUPDATE) |
22f9b7f3 | 707 | strvec_push(&am.args, "--rerere-autoupdate"); |
6023c928 | 708 | else if (opts->allow_rerere_autoupdate == RERERE_NOAUTOUPDATE) |
22f9b7f3 | 709 | strvec_push(&am.args, "--no-rerere-autoupdate"); |
21853626 | 710 | if (opts->gpg_sign_opt) |
22f9b7f3 | 711 | strvec_push(&am.args, opts->gpg_sign_opt); |
21853626 JS |
712 | status = run_command(&am); |
713 | unlink(rebased_patches); | |
714 | free(rebased_patches); | |
715 | ||
716 | if (!status) { | |
717 | return move_to_original_branch(opts); | |
718 | } | |
719 | ||
720 | if (is_directory(opts->state_dir)) | |
28dc09de | 721 | rebase_write_basic_state(opts); |
21853626 JS |
722 | |
723 | return status; | |
724 | } | |
725 | ||
460bc3ce | 726 | static int run_specific_rebase(struct rebase_options *opts, enum action action) |
ac7f467f | 727 | { |
ac7f467f | 728 | int status; |
ac7f467f | 729 | |
10cdb9f3 EN |
730 | if (opts->type == REBASE_MERGE) { |
731 | /* Run sequencer-based rebase */ | |
460bc3ce | 732 | setenv("GIT_CHERRY_PICK_HELP", resolvemsg, 1); |
bc24382c | 733 | if (!(opts->flags & REBASE_INTERACTIVE_EXPLICIT)) { |
460bc3ce | 734 | setenv("GIT_SEQUENCE_EDITOR", ":", 1); |
bc24382c JS |
735 | opts->autosquash = 0; |
736 | } | |
460bc3ce PW |
737 | if (opts->gpg_sign_opt) { |
738 | /* remove the leading "-S" */ | |
739 | char *tmp = xstrdup(opts->gpg_sign_opt + 2); | |
740 | free(opts->gpg_sign_opt); | |
741 | opts->gpg_sign_opt = tmp; | |
742 | } | |
bc24382c | 743 | |
10cdb9f3 | 744 | status = run_sequencer_rebase(opts, action); |
a74b3508 | 745 | } else if (opts->type == REBASE_APPLY) |
21853626 | 746 | status = run_am(opts); |
a74b3508 | 747 | else |
ac7f467f | 748 | BUG("Unhandled rebase type %d", opts->type); |
ac7f467f | 749 | |
ac7f467f PK |
750 | if (opts->dont_finish_rebase) |
751 | ; /* do nothing */ | |
10cdb9f3 EN |
752 | else if (opts->type == REBASE_MERGE) |
753 | ; /* merge backend cleans up after itself */ | |
ac7f467f PK |
754 | else if (status == 0) { |
755 | if (!file_exists(state_dir_path("stopped-sha", opts))) | |
756 | finish_rebase(opts); | |
757 | } else if (status == 2) { | |
758 | struct strbuf dir = STRBUF_INIT; | |
759 | ||
86ed00af | 760 | apply_autostash(state_dir_path("autostash", opts)); |
ac7f467f PK |
761 | strbuf_addstr(&dir, opts->state_dir); |
762 | remove_dir_recursively(&dir, 0); | |
763 | strbuf_release(&dir); | |
764 | die("Nothing to do"); | |
765 | } | |
766 | ||
ac7f467f PK |
767 | return status ? -1 : 0; |
768 | } | |
769 | ||
bff014da PK |
770 | static int rebase_config(const char *var, const char *value, void *data) |
771 | { | |
772 | struct rebase_options *opts = data; | |
773 | ||
774 | if (!strcmp(var, "rebase.stat")) { | |
775 | if (git_config_bool(var, value)) | |
776 | opts->flags |= REBASE_DIFFSTAT; | |
777 | else | |
4c785c0e | 778 | opts->flags &= ~REBASE_DIFFSTAT; |
bff014da PK |
779 | return 0; |
780 | } | |
781 | ||
051910a9 PK |
782 | if (!strcmp(var, "rebase.autosquash")) { |
783 | opts->autosquash = git_config_bool(var, value); | |
784 | return 0; | |
785 | } | |
786 | ||
12026a41 PK |
787 | if (!strcmp(var, "commit.gpgsign")) { |
788 | free(opts->gpg_sign_opt); | |
789 | opts->gpg_sign_opt = git_config_bool(var, value) ? | |
790 | xstrdup("-S") : NULL; | |
791 | return 0; | |
792 | } | |
793 | ||
6defce2b PK |
794 | if (!strcmp(var, "rebase.autostash")) { |
795 | opts->autostash = git_config_bool(var, value); | |
796 | return 0; | |
797 | } | |
798 | ||
969de3ff JS |
799 | if (!strcmp(var, "rebase.reschedulefailedexec")) { |
800 | opts->reschedule_failed_exec = git_config_bool(var, value); | |
801 | return 0; | |
802 | } | |
803 | ||
2803d800 AH |
804 | if (!strcmp(var, "rebase.forkpoint")) { |
805 | opts->fork_point = git_config_bool(var, value) ? -1 : 0; | |
806 | return 0; | |
807 | } | |
808 | ||
8295ed69 EN |
809 | if (!strcmp(var, "rebase.backend")) { |
810 | return git_config_string(&opts->default_backend, var, value); | |
811 | } | |
812 | ||
bff014da PK |
813 | return git_default_config(var, value, data); |
814 | } | |
815 | ||
9a48a615 PK |
816 | /* |
817 | * Determines whether the commits in from..to are linear, i.e. contain | |
818 | * no merge commits. This function *expects* `from` to be an ancestor of | |
819 | * `to`. | |
820 | */ | |
821 | static int is_linear_history(struct commit *from, struct commit *to) | |
822 | { | |
823 | while (to && to != from) { | |
824 | parse_commit(to); | |
825 | if (!to->parents) | |
826 | return 1; | |
827 | if (to->parents->next) | |
828 | return 0; | |
829 | to = to->parents->item; | |
830 | } | |
831 | return 1; | |
832 | } | |
833 | ||
c0efb4c1 | 834 | static int can_fast_forward(struct commit *onto, struct commit *upstream, |
4effc5bc | 835 | struct commit *restrict_revision, |
c0efb4c1 | 836 | struct object_id *head_oid, struct object_id *merge_base) |
9a48a615 PK |
837 | { |
838 | struct commit *head = lookup_commit(the_repository, head_oid); | |
2b318aa6 DL |
839 | struct commit_list *merge_bases = NULL; |
840 | int res = 0; | |
9a48a615 PK |
841 | |
842 | if (!head) | |
2b318aa6 | 843 | goto done; |
9a48a615 PK |
844 | |
845 | merge_bases = get_merge_bases(onto, head); | |
2b318aa6 | 846 | if (!merge_bases || merge_bases->next) { |
14228447 | 847 | oidcpy(merge_base, null_oid()); |
2b318aa6 | 848 | goto done; |
9a48a615 | 849 | } |
2b318aa6 DL |
850 | |
851 | oidcpy(merge_base, &merge_bases->item->object.oid); | |
852 | if (!oideq(merge_base, &onto->object.oid)) | |
853 | goto done; | |
854 | ||
4effc5bc DL |
855 | if (restrict_revision && !oideq(&restrict_revision->object.oid, merge_base)) |
856 | goto done; | |
857 | ||
c0efb4c1 DL |
858 | if (!upstream) |
859 | goto done; | |
860 | ||
861 | free_commit_list(merge_bases); | |
862 | merge_bases = get_merge_bases(upstream, head); | |
863 | if (!merge_bases || merge_bases->next) | |
864 | goto done; | |
865 | ||
866 | if (!oideq(&onto->object.oid, &merge_bases->item->object.oid)) | |
867 | goto done; | |
868 | ||
2b318aa6 DL |
869 | res = 1; |
870 | ||
871 | done: | |
9a48a615 PK |
872 | free_commit_list(merge_bases); |
873 | return res && is_linear_history(onto, head); | |
874 | } | |
875 | ||
52eb738d EN |
876 | static int parse_opt_am(const struct option *opt, const char *arg, int unset) |
877 | { | |
878 | struct rebase_options *opts = opt->value; | |
879 | ||
880 | BUG_ON_OPT_NEG(unset); | |
881 | BUG_ON_OPT_ARG(arg); | |
882 | ||
10cdb9f3 | 883 | opts->type = REBASE_APPLY; |
52eb738d EN |
884 | |
885 | return 0; | |
886 | } | |
887 | ||
361badd3 PK |
888 | /* -i followed by -m is still -i */ |
889 | static int parse_opt_merge(const struct option *opt, const char *arg, int unset) | |
890 | { | |
891 | struct rebase_options *opts = opt->value; | |
892 | ||
517fe807 JK |
893 | BUG_ON_OPT_NEG(unset); |
894 | BUG_ON_OPT_ARG(arg); | |
895 | ||
10cdb9f3 | 896 | if (!is_merge(opts)) |
361badd3 PK |
897 | opts->type = REBASE_MERGE; |
898 | ||
899 | return 0; | |
900 | } | |
901 | ||
82db1f84 | 902 | /* -i followed by -r is still explicitly interactive, but -r alone is not */ |
361badd3 PK |
903 | static int parse_opt_interactive(const struct option *opt, const char *arg, |
904 | int unset) | |
905 | { | |
906 | struct rebase_options *opts = opt->value; | |
907 | ||
517fe807 JK |
908 | BUG_ON_OPT_NEG(unset); |
909 | BUG_ON_OPT_ARG(arg); | |
910 | ||
10cdb9f3 | 911 | opts->type = REBASE_MERGE; |
361badd3 PK |
912 | opts->flags |= REBASE_INTERACTIVE_EXPLICIT; |
913 | ||
914 | return 0; | |
915 | } | |
916 | ||
e98c4269 EN |
917 | static enum empty_type parse_empty_value(const char *value) |
918 | { | |
919 | if (!strcasecmp(value, "drop")) | |
920 | return EMPTY_DROP; | |
921 | else if (!strcasecmp(value, "keep")) | |
922 | return EMPTY_KEEP; | |
923 | else if (!strcasecmp(value, "ask")) | |
924 | return EMPTY_ASK; | |
925 | ||
926 | die(_("unrecognized empty type '%s'; valid values are \"drop\", \"keep\", and \"ask\"."), value); | |
927 | } | |
928 | ||
929 | static int parse_opt_empty(const struct option *opt, const char *arg, int unset) | |
930 | { | |
931 | struct rebase_options *options = opt->value; | |
932 | enum empty_type value = parse_empty_value(arg); | |
933 | ||
934 | BUG_ON_OPT_NEG(unset); | |
935 | ||
936 | options->empty = value; | |
937 | return 0; | |
938 | } | |
939 | ||
8f5986d9 PK |
940 | static void NORETURN error_on_missing_default_upstream(void) |
941 | { | |
942 | struct branch *current_branch = branch_get(NULL); | |
943 | ||
944 | printf(_("%s\n" | |
945 | "Please specify which branch you want to rebase against.\n" | |
946 | "See git-rebase(1) for details.\n" | |
947 | "\n" | |
948 | " git rebase '<branch>'\n" | |
949 | "\n"), | |
950 | current_branch ? _("There is no tracking information for " | |
951 | "the current branch.") : | |
952 | _("You are not currently on a branch.")); | |
953 | ||
954 | if (current_branch) { | |
955 | const char *remote = current_branch->remote_name; | |
956 | ||
957 | if (!remote) | |
958 | remote = _("<remote>"); | |
959 | ||
960 | printf(_("If you wish to set tracking information for this " | |
961 | "branch you can do so with:\n" | |
962 | "\n" | |
963 | " git branch --set-upstream-to=%s/<branch> %s\n" | |
964 | "\n"), | |
965 | remote, current_branch->name); | |
966 | } | |
967 | exit(1); | |
968 | } | |
969 | ||
13a5a9f0 JS |
970 | static void set_reflog_action(struct rebase_options *options) |
971 | { | |
972 | const char *env; | |
973 | struct strbuf buf = STRBUF_INIT; | |
974 | ||
10cdb9f3 | 975 | if (!is_merge(options)) |
13a5a9f0 JS |
976 | return; |
977 | ||
978 | env = getenv(GIT_REFLOG_ACTION_ENVIRONMENT); | |
979 | if (env && strcmp("rebase", env)) | |
980 | return; /* only override it if it is "rebase" */ | |
981 | ||
c2417d3a | 982 | strbuf_addf(&buf, "rebase (%s)", options->action); |
13a5a9f0 JS |
983 | setenv(GIT_REFLOG_ACTION_ENVIRONMENT, buf.buf, 1); |
984 | strbuf_release(&buf); | |
985 | } | |
986 | ||
c762aada PW |
987 | static int check_exec_cmd(const char *cmd) |
988 | { | |
989 | if (strchr(cmd, '\n')) | |
990 | return error(_("exec commands cannot contain newlines")); | |
991 | ||
992 | /* Does the command consist purely of whitespace? */ | |
993 | if (!cmd[strspn(cmd, " \t\r\f\v")]) | |
994 | return error(_("empty exec command")); | |
995 | ||
996 | return 0; | |
997 | } | |
998 | ||
55071ea2 PK |
999 | int cmd_rebase(int argc, const char **argv, const char *prefix) |
1000 | { | |
73fdc535 | 1001 | struct rebase_options options = REBASE_OPTIONS_INIT; |
ac7f467f | 1002 | const char *branch_name; |
f9573628 | 1003 | int ret, flags, total_argc, in_progress = 0; |
414d924b | 1004 | int keep_base = 0; |
06e4775a | 1005 | int ok_to_skip_pre_rebase = 0; |
ac7f467f PK |
1006 | struct strbuf msg = STRBUF_INIT; |
1007 | struct strbuf revisions = STRBUF_INIT; | |
c54dacb5 | 1008 | struct strbuf buf = STRBUF_INIT; |
075bc852 | 1009 | struct object_id merge_base; |
ef484add | 1010 | int ignore_whitespace = 0; |
297b1e17 | 1011 | enum action action = ACTION_NONE; |
12026a41 | 1012 | const char *gpg_sign = NULL; |
68e46d78 | 1013 | struct string_list exec = STRING_LIST_INIT_NODUP; |
3c3588c7 | 1014 | const char *rebase_merges = NULL; |
ba1905a5 | 1015 | struct string_list strategy_options = STRING_LIST_INIT_NODUP; |
9dba809a PK |
1016 | struct object_id squash_onto; |
1017 | char *squash_onto_name = NULL; | |
906b6394 | 1018 | int reschedule_failed_exec = -1; |
befb89ce | 1019 | int allow_preemptive_ff = 1; |
a74b3508 | 1020 | int preserve_merges_selected = 0; |
f28d40d3 PK |
1021 | struct option builtin_rebase_options[] = { |
1022 | OPT_STRING(0, "onto", &options.onto_name, | |
1023 | N_("revision"), | |
1024 | N_("rebase onto given branch instead of upstream")), | |
414d924b DL |
1025 | OPT_BOOL(0, "keep-base", &keep_base, |
1026 | N_("use the merge-base of upstream and branch as the current base")), | |
06e4775a PK |
1027 | OPT_BOOL(0, "no-verify", &ok_to_skip_pre_rebase, |
1028 | N_("allow pre-rebase hook to run")), | |
b4c8eb02 PK |
1029 | OPT_NEGBIT('q', "quiet", &options.flags, |
1030 | N_("be quiet. implies --no-stat"), | |
55d2b6d7 | 1031 | REBASE_NO_QUIET | REBASE_VERBOSE | REBASE_DIFFSTAT), |
bff014da PK |
1032 | OPT_BIT('v', "verbose", &options.flags, |
1033 | N_("display a diffstat of what changed upstream"), | |
1034 | REBASE_NO_QUIET | REBASE_VERBOSE | REBASE_DIFFSTAT), | |
1035 | {OPTION_NEGBIT, 'n', "no-stat", &options.flags, NULL, | |
1036 | N_("do not show diffstat of what changed upstream"), | |
1037 | PARSE_OPT_NOARG, NULL, REBASE_DIFFSTAT }, | |
73d51ed0 | 1038 | OPT_BOOL(0, "signoff", &options.signoff, |
3abd4a67 | 1039 | N_("add a Signed-off-by trailer to each commit")), |
7573cec5 PW |
1040 | OPT_BOOL(0, "committer-date-is-author-date", |
1041 | &options.committer_date_is_author_date, | |
1042 | N_("make committer date match author date")), | |
27126692 | 1043 | OPT_BOOL(0, "reset-author-date", &options.ignore_date, |
a3894aad | 1044 | N_("ignore author date and use current date")), |
27126692 RA |
1045 | OPT_HIDDEN_BOOL(0, "ignore-date", &options.ignore_date, |
1046 | N_("synonym of --reset-author-date")), | |
f5769680 JS |
1047 | OPT_PASSTHRU_ARGV('C', NULL, &options.git_am_opts, N_("n"), |
1048 | N_("passed to 'git apply'"), 0), | |
ef484add RA |
1049 | OPT_BOOL(0, "ignore-whitespace", &ignore_whitespace, |
1050 | N_("ignore changes in whitespace")), | |
f5769680 JS |
1051 | OPT_PASSTHRU_ARGV(0, "whitespace", &options.git_am_opts, |
1052 | N_("action"), N_("passed to 'git apply'"), 0), | |
1ed9c14f PK |
1053 | OPT_BIT('f', "force-rebase", &options.flags, |
1054 | N_("cherry-pick all commits, even if unchanged"), | |
1055 | REBASE_FORCE), | |
1056 | OPT_BIT(0, "no-ff", &options.flags, | |
1057 | N_("cherry-pick all commits, even if unchanged"), | |
1058 | REBASE_FORCE), | |
f9573628 PK |
1059 | OPT_CMDMODE(0, "continue", &action, N_("continue"), |
1060 | ACTION_CONTINUE), | |
122420c2 PK |
1061 | OPT_CMDMODE(0, "skip", &action, |
1062 | N_("skip current patch and continue"), ACTION_SKIP), | |
5e5d9619 PK |
1063 | OPT_CMDMODE(0, "abort", &action, |
1064 | N_("abort and check out the original branch"), | |
1065 | ACTION_ABORT), | |
5a614945 PK |
1066 | OPT_CMDMODE(0, "quit", &action, |
1067 | N_("abort but keep HEAD where it is"), ACTION_QUIT), | |
51e9ea6d PK |
1068 | OPT_CMDMODE(0, "edit-todo", &action, N_("edit the todo list " |
1069 | "during an interactive rebase"), ACTION_EDIT_TODO), | |
1070 | OPT_CMDMODE(0, "show-current-patch", &action, | |
1071 | N_("show the patch file being applied or merged"), | |
1072 | ACTION_SHOW_CURRENT_PATCH), | |
203c8533 | 1073 | OPT_CALLBACK_F(0, "apply", &options, NULL, |
10cdb9f3 | 1074 | N_("use apply strategies to rebase"), |
52eb738d | 1075 | PARSE_OPT_NOARG | PARSE_OPT_NONEG, |
203c8533 DL |
1076 | parse_opt_am), |
1077 | OPT_CALLBACK_F('m', "merge", &options, NULL, | |
361badd3 PK |
1078 | N_("use merging strategies to rebase"), |
1079 | PARSE_OPT_NOARG | PARSE_OPT_NONEG, | |
203c8533 DL |
1080 | parse_opt_merge), |
1081 | OPT_CALLBACK_F('i', "interactive", &options, NULL, | |
361badd3 PK |
1082 | N_("let the user edit the list of commits to rebase"), |
1083 | PARSE_OPT_NOARG | PARSE_OPT_NONEG, | |
203c8533 | 1084 | parse_opt_interactive), |
a74b3508 | 1085 | OPT_SET_INT_F('p', "preserve-merges", &preserve_merges_selected, |
feebd2d2 DL |
1086 | N_("(DEPRECATED) try to recreate merges instead of " |
1087 | "ignoring them"), | |
a74b3508 | 1088 | 1, PARSE_OPT_HIDDEN), |
6023c928 | 1089 | OPT_RERERE_AUTOUPDATE(&options.allow_rerere_autoupdate), |
937d1436 | 1090 | OPT_CALLBACK_F(0, "empty", &options, "{drop,keep,ask}", |
e98c4269 EN |
1091 | N_("how to handle commits that become empty"), |
1092 | PARSE_OPT_NONEG, parse_opt_empty), | |
203c8533 | 1093 | OPT_CALLBACK_F('k', "keep-empty", &options, NULL, |
b9cbd295 | 1094 | N_("keep commits which start empty"), |
d48e5e21 | 1095 | PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, |
203c8533 | 1096 | parse_opt_keep_empty), |
051910a9 PK |
1097 | OPT_BOOL(0, "autosquash", &options.autosquash, |
1098 | N_("move commits that begin with " | |
1099 | "squash!/fixup! under -i")), | |
12026a41 PK |
1100 | { OPTION_STRING, 'S', "gpg-sign", &gpg_sign, N_("key-id"), |
1101 | N_("GPG-sign commits"), | |
1102 | PARSE_OPT_OPTARG, NULL, (intptr_t) "" }, | |
a03b5553 | 1103 | OPT_AUTOSTASH(&options.autostash), |
68e46d78 PK |
1104 | OPT_STRING_LIST('x', "exec", &exec, N_("exec"), |
1105 | N_("add exec lines after each commit of the " | |
1106 | "editable list")), | |
22a69fda EN |
1107 | OPT_BOOL_F(0, "allow-empty-message", |
1108 | &options.allow_empty_message, | |
1109 | N_("allow rebasing commits with empty messages"), | |
1110 | PARSE_OPT_HIDDEN), | |
3c3588c7 PK |
1111 | {OPTION_STRING, 'r', "rebase-merges", &rebase_merges, |
1112 | N_("mode"), | |
1113 | N_("try to rebase merges instead of skipping them"), | |
1114 | PARSE_OPT_OPTARG, NULL, (intptr_t)""}, | |
2803d800 | 1115 | OPT_BOOL(0, "fork-point", &options.fork_point, |
92d0d74e | 1116 | N_("use 'merge-base --fork-point' to refine upstream")), |
ba1905a5 PK |
1117 | OPT_STRING('s', "strategy", &options.strategy, |
1118 | N_("strategy"), N_("use the given merge strategy")), | |
1119 | OPT_STRING_LIST('X', "strategy-option", &strategy_options, | |
1120 | N_("option"), | |
1121 | N_("pass the argument through to the merge " | |
1122 | "strategy")), | |
9dba809a PK |
1123 | OPT_BOOL(0, "root", &options.root, |
1124 | N_("rebase all reachable commits up to the root(s)")), | |
d421afa0 | 1125 | OPT_BOOL(0, "reschedule-failed-exec", |
906b6394 | 1126 | &reschedule_failed_exec, |
d421afa0 | 1127 | N_("automatically re-schedule any `exec` that fails")), |
0fcb4f6b JT |
1128 | OPT_BOOL(0, "reapply-cherry-picks", &options.reapply_cherry_picks, |
1129 | N_("apply all changes, even those already present upstream")), | |
f28d40d3 PK |
1130 | OPT_END(), |
1131 | }; | |
f5769680 | 1132 | int i; |
ac7f467f | 1133 | |
f28d40d3 PK |
1134 | if (argc == 2 && !strcmp(argv[1], "-h")) |
1135 | usage_with_options(builtin_rebase_usage, | |
1136 | builtin_rebase_options); | |
1137 | ||
516680ba DS |
1138 | prepare_repo_settings(the_repository); |
1139 | the_repository->settings.command_requires_full_index = 0; | |
1140 | ||
73fdc535 | 1141 | options.allow_empty_message = 1; |
bff014da | 1142 | git_config(rebase_config, &options); |
c241371c ĐTCD |
1143 | /* options.gpg_sign_opt will be either "-S" or NULL */ |
1144 | gpg_sign = options.gpg_sign_opt ? "" : NULL; | |
1145 | FREE_AND_NULL(options.gpg_sign_opt); | |
bff014da | 1146 | |
0eabf4b9 PK |
1147 | strbuf_reset(&buf); |
1148 | strbuf_addf(&buf, "%s/applying", apply_dir()); | |
1149 | if(file_exists(buf.buf)) | |
1150 | die(_("It looks like 'git am' is in progress. Cannot rebase.")); | |
1151 | ||
c54dacb5 | 1152 | if (is_directory(apply_dir())) { |
10cdb9f3 | 1153 | options.type = REBASE_APPLY; |
c54dacb5 PK |
1154 | options.state_dir = apply_dir(); |
1155 | } else if (is_directory(merge_dir())) { | |
1156 | strbuf_reset(&buf); | |
1157 | strbuf_addf(&buf, "%s/rewritten", merge_dir()); | |
1158 | if (is_directory(buf.buf)) { | |
a74b3508 | 1159 | die("`rebase -p` is no longer supported"); |
c54dacb5 PK |
1160 | } else { |
1161 | strbuf_reset(&buf); | |
1162 | strbuf_addf(&buf, "%s/interactive", merge_dir()); | |
1163 | if(file_exists(buf.buf)) { | |
10cdb9f3 | 1164 | options.type = REBASE_MERGE; |
c54dacb5 PK |
1165 | options.flags |= REBASE_INTERACTIVE_EXPLICIT; |
1166 | } else | |
1167 | options.type = REBASE_MERGE; | |
1168 | } | |
1169 | options.state_dir = merge_dir(); | |
1170 | } | |
1171 | ||
1172 | if (options.type != REBASE_UNSPECIFIED) | |
1173 | in_progress = 1; | |
1174 | ||
f9573628 | 1175 | total_argc = argc; |
f28d40d3 PK |
1176 | argc = parse_options(argc, argv, prefix, |
1177 | builtin_rebase_options, | |
1178 | builtin_rebase_usage, 0); | |
1179 | ||
a74b3508 JS |
1180 | if (preserve_merges_selected) |
1181 | die(_("--preserve-merges was replaced by --rebase-merges")); | |
1182 | ||
297b1e17 | 1183 | if (action != ACTION_NONE && total_argc != 2) { |
f9573628 PK |
1184 | usage_with_options(builtin_rebase_usage, |
1185 | builtin_rebase_options); | |
1186 | } | |
1187 | ||
f28d40d3 PK |
1188 | if (argc > 2) |
1189 | usage_with_options(builtin_rebase_usage, | |
1190 | builtin_rebase_options); | |
ac7f467f | 1191 | |
414d924b DL |
1192 | if (keep_base) { |
1193 | if (options.onto_name) | |
12909b6b | 1194 | die(_("options '%s' and '%s' cannot be used together"), "--keep-base", "--onto"); |
414d924b | 1195 | if (options.root) |
12909b6b | 1196 | die(_("options '%s' and '%s' cannot be used together"), "--keep-base", "--root"); |
414d924b DL |
1197 | } |
1198 | ||
2803d800 | 1199 | if (options.root && options.fork_point > 0) |
12909b6b | 1200 | die(_("options '%s' and '%s' cannot be used together"), "--root", "--fork-point"); |
a35413c3 | 1201 | |
297b1e17 | 1202 | if (action != ACTION_NONE && !in_progress) |
d732a570 | 1203 | die(_("No rebase in progress?")); |
13a5a9f0 | 1204 | setenv(GIT_REFLOG_ACTION_ENVIRONMENT, "rebase", 0); |
d732a570 | 1205 | |
10cdb9f3 | 1206 | if (action == ACTION_EDIT_TODO && !is_merge(&options)) |
51e9ea6d PK |
1207 | die(_("The --edit-todo action can only be used during " |
1208 | "interactive rebase.")); | |
1209 | ||
b3a5d5a8 | 1210 | if (trace2_is_enabled()) { |
10cdb9f3 | 1211 | if (is_merge(&options)) |
b3a5d5a8 JH |
1212 | trace2_cmd_mode("interactive"); |
1213 | else if (exec.nr) | |
1214 | trace2_cmd_mode("interactive-exec"); | |
1215 | else | |
1216 | trace2_cmd_mode(action_names[action]); | |
1217 | } | |
1218 | ||
f9573628 PK |
1219 | switch (action) { |
1220 | case ACTION_CONTINUE: { | |
1221 | struct object_id head; | |
1222 | struct lock_file lock_file = LOCK_INIT; | |
1223 | int fd; | |
1224 | ||
1225 | options.action = "continue"; | |
13a5a9f0 | 1226 | set_reflog_action(&options); |
f9573628 PK |
1227 | |
1228 | /* Sanity check */ | |
1229 | if (get_oid("HEAD", &head)) | |
1230 | die(_("Cannot read HEAD")); | |
1231 | ||
1232 | fd = hold_locked_index(&lock_file, 0); | |
e1ff0a32 | 1233 | if (repo_read_index(the_repository) < 0) |
f9573628 PK |
1234 | die(_("could not read index")); |
1235 | refresh_index(the_repository->index, REFRESH_QUIET, NULL, NULL, | |
1236 | NULL); | |
1237 | if (0 <= fd) | |
1b0d968b | 1238 | repo_update_index_if_able(the_repository, &lock_file); |
f9573628 PK |
1239 | rollback_lock_file(&lock_file); |
1240 | ||
5b02ca38 | 1241 | if (has_unstaged_changes(the_repository, 1)) { |
f9573628 PK |
1242 | puts(_("You must edit all merge conflicts and then\n" |
1243 | "mark them as resolved using git add")); | |
1244 | exit(1); | |
1245 | } | |
1246 | if (read_basic_state(&options)) | |
1247 | exit(1); | |
1248 | goto run_rebase; | |
1249 | } | |
122420c2 PK |
1250 | case ACTION_SKIP: { |
1251 | struct string_list merge_rr = STRING_LIST_INIT_DUP; | |
1252 | ||
1253 | options.action = "skip"; | |
13a5a9f0 | 1254 | set_reflog_action(&options); |
122420c2 | 1255 | |
55e6b354 | 1256 | rerere_clear(the_repository, &merge_rr); |
122420c2 PK |
1257 | string_list_clear(&merge_rr, 1); |
1258 | ||
f213f069 DL |
1259 | if (reset_head(the_repository, NULL, "reset", NULL, RESET_HEAD_HARD, |
1260 | NULL, NULL, DEFAULT_REFLOG_ACTION) < 0) | |
122420c2 | 1261 | die(_("could not discard worktree changes")); |
f4a4b9ac | 1262 | remove_branch_state(the_repository, 0); |
122420c2 PK |
1263 | if (read_basic_state(&options)) |
1264 | exit(1); | |
1265 | goto run_rebase; | |
1266 | } | |
5e5d9619 PK |
1267 | case ACTION_ABORT: { |
1268 | struct string_list merge_rr = STRING_LIST_INIT_DUP; | |
1269 | options.action = "abort"; | |
13a5a9f0 | 1270 | set_reflog_action(&options); |
5e5d9619 | 1271 | |
55e6b354 | 1272 | rerere_clear(the_repository, &merge_rr); |
5e5d9619 PK |
1273 | string_list_clear(&merge_rr, 1); |
1274 | ||
1275 | if (read_basic_state(&options)) | |
1276 | exit(1); | |
f213f069 | 1277 | if (reset_head(the_repository, &options.orig_head, "reset", |
bac2a1e3 | 1278 | options.head_name, RESET_HEAD_HARD, |
f213f069 | 1279 | NULL, NULL, DEFAULT_REFLOG_ACTION) < 0) |
5e5d9619 PK |
1280 | die(_("could not move back to %s"), |
1281 | oid_to_hex(&options.orig_head)); | |
f4a4b9ac | 1282 | remove_branch_state(the_repository, 0); |
35f070b4 | 1283 | ret = finish_rebase(&options); |
5e5d9619 PK |
1284 | goto cleanup; |
1285 | } | |
5a614945 | 1286 | case ACTION_QUIT: { |
9b2df3e8 | 1287 | save_autostash(state_dir_path("autostash", &options)); |
10cdb9f3 | 1288 | if (options.type == REBASE_MERGE) { |
d559f502 PW |
1289 | struct replay_opts replay = REPLAY_OPTS_INIT; |
1290 | ||
1291 | replay.action = REPLAY_INTERACTIVE_REBASE; | |
35f070b4 | 1292 | ret = sequencer_remove_state(&replay); |
d559f502 PW |
1293 | } else { |
1294 | strbuf_reset(&buf); | |
1295 | strbuf_addstr(&buf, options.state_dir); | |
35f070b4 | 1296 | ret = remove_dir_recursively(&buf, 0); |
d559f502 PW |
1297 | if (ret) |
1298 | error(_("could not remove '%s'"), | |
1299 | options.state_dir); | |
1300 | } | |
5a614945 PK |
1301 | goto cleanup; |
1302 | } | |
51e9ea6d PK |
1303 | case ACTION_EDIT_TODO: |
1304 | options.action = "edit-todo"; | |
1305 | options.dont_finish_rebase = 1; | |
1306 | goto run_rebase; | |
1307 | case ACTION_SHOW_CURRENT_PATCH: | |
1308 | options.action = "show-current-patch"; | |
1309 | options.dont_finish_rebase = 1; | |
1310 | goto run_rebase; | |
297b1e17 | 1311 | case ACTION_NONE: |
51e9ea6d | 1312 | break; |
f9573628 | 1313 | default: |
51e9ea6d | 1314 | BUG("action: %d", action); |
f9573628 PK |
1315 | } |
1316 | ||
c54dacb5 PK |
1317 | /* Make sure no rebase is in progress */ |
1318 | if (in_progress) { | |
1319 | const char *last_slash = strrchr(options.state_dir, '/'); | |
1320 | const char *state_dir_base = | |
1321 | last_slash ? last_slash + 1 : options.state_dir; | |
1322 | const char *cmd_live_rebase = | |
1323 | "git rebase (--continue | --abort | --skip)"; | |
1324 | strbuf_reset(&buf); | |
1325 | strbuf_addf(&buf, "rm -fr \"%s\"", options.state_dir); | |
1326 | die(_("It seems that there is already a %s directory, and\n" | |
1327 | "I wonder if you are in the middle of another rebase. " | |
1328 | "If that is the\n" | |
1329 | "case, please try\n\t%s\n" | |
1330 | "If that is not the case, please\n\t%s\n" | |
1331 | "and run me again. I am stopping in case you still " | |
1332 | "have something\n" | |
1333 | "valuable there.\n"), | |
1334 | state_dir_base, cmd_live_rebase, buf.buf); | |
1335 | } | |
1336 | ||
befb89ce EN |
1337 | if ((options.flags & REBASE_INTERACTIVE_EXPLICIT) || |
1338 | (action != ACTION_NONE) || | |
1339 | (exec.nr > 0) || | |
1340 | options.autosquash) { | |
1341 | allow_preemptive_ff = 0; | |
1342 | } | |
a3894aad | 1343 | if (options.committer_date_is_author_date || options.ignore_date) |
7573cec5 | 1344 | options.flags |= REBASE_FORCE; |
befb89ce | 1345 | |
d70a9eb6 JK |
1346 | for (i = 0; i < options.git_am_opts.nr; i++) { |
1347 | const char *option = options.git_am_opts.v[i], *p; | |
a3894aad | 1348 | if (!strcmp(option, "--whitespace=fix") || |
f5769680 | 1349 | !strcmp(option, "--whitespace=strip")) |
befb89ce | 1350 | allow_preemptive_ff = 0; |
04519d72 JS |
1351 | else if (skip_prefix(option, "-C", &p)) { |
1352 | while (*p) | |
1353 | if (!isdigit(*(p++))) | |
1354 | die(_("switch `C' expects a " | |
1355 | "numerical value")); | |
1356 | } else if (skip_prefix(option, "--whitespace=", &p)) { | |
1357 | if (*p && strcmp(p, "warn") && strcmp(p, "nowarn") && | |
1358 | strcmp(p, "error") && strcmp(p, "error-all")) | |
1359 | die("Invalid whitespace option: '%s'", p); | |
1360 | } | |
38dbcef2 PK |
1361 | } |
1362 | ||
c762aada PW |
1363 | for (i = 0; i < exec.nr; i++) |
1364 | if (check_exec_cmd(exec.items[i].string)) | |
1365 | exit(1); | |
1366 | ||
f5769680 | 1367 | if (!(options.flags & REBASE_NO_QUIET)) |
22f9b7f3 | 1368 | strvec_push(&options.git_am_opts, "-q"); |
53f9e5be | 1369 | |
e98c4269 | 1370 | if (options.empty != EMPTY_UNSPECIFIED) |
10cdb9f3 | 1371 | imply_merge(&options, "--empty"); |
002ee2fe | 1372 | |
0fcb4f6b JT |
1373 | if (options.reapply_cherry_picks) |
1374 | imply_merge(&options, "--reapply-cherry-picks"); | |
1375 | ||
c241371c | 1376 | if (gpg_sign) |
12026a41 | 1377 | options.gpg_sign_opt = xstrfmt("-S%s", gpg_sign); |
12026a41 | 1378 | |
68e46d78 PK |
1379 | if (exec.nr) { |
1380 | int i; | |
1381 | ||
10cdb9f3 | 1382 | imply_merge(&options, "--exec"); |
68e46d78 PK |
1383 | |
1384 | strbuf_reset(&buf); | |
1385 | for (i = 0; i < exec.nr; i++) | |
1386 | strbuf_addf(&buf, "exec %s\n", exec.items[i].string); | |
1387 | options.cmd = xstrdup(buf.buf); | |
1388 | } | |
1389 | ||
3c3588c7 PK |
1390 | if (rebase_merges) { |
1391 | if (!*rebase_merges) | |
1392 | ; /* default mode; do nothing */ | |
1393 | else if (!strcmp("rebase-cousins", rebase_merges)) | |
1394 | options.rebase_cousins = 1; | |
1395 | else if (strcmp("no-rebase-cousins", rebase_merges)) | |
1396 | die(_("Unknown mode: %s"), rebase_merges); | |
1397 | options.rebase_merges = 1; | |
10cdb9f3 | 1398 | imply_merge(&options, "--rebase-merges"); |
3c3588c7 PK |
1399 | } |
1400 | ||
ef484add RA |
1401 | if (options.type == REBASE_APPLY) { |
1402 | if (ignore_whitespace) | |
9c31b19d JH |
1403 | strvec_push(&options.git_am_opts, |
1404 | "--ignore-whitespace"); | |
7573cec5 | 1405 | if (options.committer_date_is_author_date) |
9c31b19d JH |
1406 | strvec_push(&options.git_am_opts, |
1407 | "--committer-date-is-author-date"); | |
a3894aad | 1408 | if (options.ignore_date) |
9c31b19d | 1409 | strvec_push(&options.git_am_opts, "--ignore-date"); |
ef484add | 1410 | } else { |
ff8d6e5a | 1411 | /* REBASE_MERGE */ |
ef484add RA |
1412 | if (ignore_whitespace) { |
1413 | string_list_append(&strategy_options, | |
1414 | "ignore-space-change"); | |
1415 | } | |
1416 | } | |
1417 | ||
ba1905a5 PK |
1418 | if (strategy_options.nr) { |
1419 | int i; | |
1420 | ||
1421 | if (!options.strategy) | |
6a5fb966 | 1422 | options.strategy = "ort"; |
ba1905a5 PK |
1423 | |
1424 | strbuf_reset(&buf); | |
1425 | for (i = 0; i < strategy_options.nr; i++) | |
1426 | strbuf_addf(&buf, " --%s", | |
1427 | strategy_options.items[i].string); | |
1428 | options.strategy_opts = xstrdup(buf.buf); | |
1429 | } | |
1430 | ||
1431 | if (options.strategy) { | |
1432 | options.strategy = xstrdup(options.strategy); | |
1433 | switch (options.type) { | |
10cdb9f3 | 1434 | case REBASE_APPLY: |
ba1905a5 PK |
1435 | die(_("--strategy requires --merge or --interactive")); |
1436 | case REBASE_MERGE: | |
ba1905a5 PK |
1437 | /* compatible */ |
1438 | break; | |
1439 | case REBASE_UNSPECIFIED: | |
1440 | options.type = REBASE_MERGE; | |
1441 | break; | |
1442 | default: | |
1443 | BUG("unhandled rebase type (%d)", options.type); | |
1444 | } | |
1445 | } | |
1446 | ||
68aa495b | 1447 | if (options.type == REBASE_MERGE) |
10cdb9f3 | 1448 | imply_merge(&options, "--merge"); |
68aa495b | 1449 | |
9dba809a | 1450 | if (options.root && !options.onto_name) |
10cdb9f3 | 1451 | imply_merge(&options, "--root without --onto"); |
9dba809a | 1452 | |
cda614e4 PK |
1453 | if (isatty(2) && options.flags & REBASE_NO_QUIET) |
1454 | strbuf_addstr(&options.git_format_patch_opt, " --progress"); | |
1455 | ||
d70a9eb6 | 1456 | if (options.git_am_opts.nr || options.type == REBASE_APPLY) { |
10cdb9f3 | 1457 | /* all am options except -q are compatible only with --apply */ |
d70a9eb6 JK |
1458 | for (i = options.git_am_opts.nr - 1; i >= 0; i--) |
1459 | if (strcmp(options.git_am_opts.v[i], "-q")) | |
8af14f08 EN |
1460 | break; |
1461 | ||
8295ed69 | 1462 | if (i >= 0) { |
10cdb9f3 | 1463 | if (is_merge(&options)) |
246cac85 JNA |
1464 | die(_("apply options and merge options " |
1465 | "cannot be used together")); | |
8295ed69 | 1466 | else |
10cdb9f3 | 1467 | options.type = REBASE_APPLY; |
8295ed69 EN |
1468 | } |
1469 | } | |
1470 | ||
1471 | if (options.type == REBASE_UNSPECIFIED) { | |
1472 | if (!strcmp(options.default_backend, "merge")) | |
10cdb9f3 EN |
1473 | imply_merge(&options, "--merge"); |
1474 | else if (!strcmp(options.default_backend, "apply")) | |
1475 | options.type = REBASE_APPLY; | |
8295ed69 EN |
1476 | else |
1477 | die(_("Unknown rebase backend: %s"), | |
1478 | options.default_backend); | |
8af14f08 EN |
1479 | } |
1480 | ||
14c4586c EN |
1481 | if (options.type == REBASE_MERGE && |
1482 | !options.strategy && | |
1483 | getenv("GIT_TEST_MERGE_ALGORITHM")) | |
1484 | options.strategy = xstrdup(getenv("GIT_TEST_MERGE_ALGORITHM")); | |
1485 | ||
ac7f467f PK |
1486 | switch (options.type) { |
1487 | case REBASE_MERGE: | |
ac7f467f PK |
1488 | options.state_dir = merge_dir(); |
1489 | break; | |
10cdb9f3 | 1490 | case REBASE_APPLY: |
ac7f467f PK |
1491 | options.state_dir = apply_dir(); |
1492 | break; | |
1493 | default: | |
8295ed69 | 1494 | BUG("options.type was just set above; should be unreachable."); |
ac7f467f PK |
1495 | } |
1496 | ||
e98c4269 EN |
1497 | if (options.empty == EMPTY_UNSPECIFIED) { |
1498 | if (options.flags & REBASE_INTERACTIVE_EXPLICIT) | |
1499 | options.empty = EMPTY_ASK; | |
1500 | else if (exec.nr > 0) | |
1501 | options.empty = EMPTY_KEEP; | |
1502 | else | |
1503 | options.empty = EMPTY_DROP; | |
1504 | } | |
10cdb9f3 | 1505 | if (reschedule_failed_exec > 0 && !is_merge(&options)) |
906b6394 JS |
1506 | die(_("--reschedule-failed-exec requires " |
1507 | "--exec or --interactive")); | |
1508 | if (reschedule_failed_exec >= 0) | |
1509 | options.reschedule_failed_exec = reschedule_failed_exec; | |
d421afa0 | 1510 | |
73d51ed0 | 1511 | if (options.signoff) { |
22f9b7f3 | 1512 | strvec_push(&options.git_am_opts, "--signoff"); |
73d51ed0 PK |
1513 | options.flags |= REBASE_FORCE; |
1514 | } | |
1515 | ||
ac7f467f | 1516 | if (!options.root) { |
8f5986d9 PK |
1517 | if (argc < 1) { |
1518 | struct branch *branch; | |
1519 | ||
1520 | branch = branch_get(NULL); | |
1521 | options.upstream_name = branch_get_upstream(branch, | |
1522 | NULL); | |
1523 | if (!options.upstream_name) | |
1524 | error_on_missing_default_upstream(); | |
2803d800 AH |
1525 | if (options.fork_point < 0) |
1526 | options.fork_point = 1; | |
8f5986d9 | 1527 | } else { |
f28d40d3 | 1528 | options.upstream_name = argv[0]; |
ac7f467f PK |
1529 | argc--; |
1530 | argv++; | |
1531 | if (!strcmp(options.upstream_name, "-")) | |
1532 | options.upstream_name = "@{-1}"; | |
1533 | } | |
1d188263 PW |
1534 | options.upstream = |
1535 | lookup_commit_reference_by_name(options.upstream_name); | |
ac7f467f PK |
1536 | if (!options.upstream) |
1537 | die(_("invalid upstream '%s'"), options.upstream_name); | |
06e4775a | 1538 | options.upstream_arg = options.upstream_name; |
9dba809a PK |
1539 | } else { |
1540 | if (!options.onto_name) { | |
1541 | if (commit_tree("", 0, the_hash_algo->empty_tree, NULL, | |
1542 | &squash_onto, NULL, NULL) < 0) | |
1543 | die(_("Could not create new root commit")); | |
1544 | options.squash_onto = &squash_onto; | |
1545 | options.onto_name = squash_onto_name = | |
1546 | xstrdup(oid_to_hex(&squash_onto)); | |
e1fac531 JS |
1547 | } else |
1548 | options.root_with_onto = 1; | |
1549 | ||
9dba809a PK |
1550 | options.upstream_name = NULL; |
1551 | options.upstream = NULL; | |
1552 | if (argc > 1) | |
1553 | usage_with_options(builtin_rebase_usage, | |
1554 | builtin_rebase_options); | |
1555 | options.upstream_arg = "--root"; | |
1556 | } | |
ac7f467f PK |
1557 | |
1558 | /* Make sure the branch to rebase onto is valid. */ | |
414d924b DL |
1559 | if (keep_base) { |
1560 | strbuf_reset(&buf); | |
1561 | strbuf_addstr(&buf, options.upstream_name); | |
1562 | strbuf_addstr(&buf, "..."); | |
1563 | options.onto_name = xstrdup(buf.buf); | |
1564 | } else if (!options.onto_name) | |
ac7f467f PK |
1565 | options.onto_name = options.upstream_name; |
1566 | if (strstr(options.onto_name, "...")) { | |
414d924b DL |
1567 | if (get_oid_mb(options.onto_name, &merge_base) < 0) { |
1568 | if (keep_base) | |
1569 | die(_("'%s': need exactly one merge base with branch"), | |
1570 | options.upstream_name); | |
1571 | else | |
1572 | die(_("'%s': need exactly one merge base"), | |
1573 | options.onto_name); | |
1574 | } | |
075bc852 PK |
1575 | options.onto = lookup_commit_or_die(&merge_base, |
1576 | options.onto_name); | |
ac7f467f | 1577 | } else { |
1d188263 PW |
1578 | options.onto = |
1579 | lookup_commit_reference_by_name(options.onto_name); | |
ac7f467f PK |
1580 | if (!options.onto) |
1581 | die(_("Does not point to a valid commit '%s'"), | |
1582 | options.onto_name); | |
1583 | } | |
1584 | ||
1585 | /* | |
1586 | * If the branch to rebase is given, that is the branch we will rebase | |
1587 | * branch_name -- branch/commit being rebased, or | |
1588 | * HEAD (already detached) | |
1589 | * orig_head -- commit object name of tip of the branch before rebasing | |
d4c569f8 | 1590 | * head_name -- refs/heads/<that-branch> or NULL (detached HEAD) |
ac7f467f | 1591 | */ |
e65123a7 PK |
1592 | if (argc == 1) { |
1593 | /* Is it "rebase other branchname" or "rebase other commit"? */ | |
1594 | branch_name = argv[0]; | |
1595 | options.switch_to = argv[0]; | |
1596 | ||
1597 | /* Is it a local branch? */ | |
1598 | strbuf_reset(&buf); | |
1599 | strbuf_addf(&buf, "refs/heads/%s", branch_name); | |
b5cabb4a ES |
1600 | if (!read_ref(buf.buf, &options.orig_head)) { |
1601 | die_if_checked_out(buf.buf, 1); | |
e65123a7 PK |
1602 | options.head_name = xstrdup(buf.buf); |
1603 | /* If not is it a valid ref (branch or commit)? */ | |
7740ac69 PW |
1604 | } else { |
1605 | struct commit *commit = | |
1606 | lookup_commit_reference_by_name(branch_name); | |
1607 | if (!commit) | |
1608 | die(_("no such branch/commit '%s'"), | |
1609 | branch_name); | |
1610 | oidcpy(&options.orig_head, &commit->object.oid); | |
e65123a7 | 1611 | options.head_name = NULL; |
7740ac69 | 1612 | } |
e65123a7 | 1613 | } else if (argc == 0) { |
ac7f467f PK |
1614 | /* Do not need to switch branches, we are already on it. */ |
1615 | options.head_name = | |
1616 | xstrdup_or_null(resolve_ref_unsafe("HEAD", 0, NULL, | |
1617 | &flags)); | |
1618 | if (!options.head_name) | |
1619 | die(_("No such ref: %s"), "HEAD"); | |
1620 | if (flags & REF_ISSYMREF) { | |
1621 | if (!skip_prefix(options.head_name, | |
1622 | "refs/heads/", &branch_name)) | |
1623 | branch_name = options.head_name; | |
1624 | ||
1625 | } else { | |
7762f44e | 1626 | FREE_AND_NULL(options.head_name); |
ac7f467f PK |
1627 | branch_name = "HEAD"; |
1628 | } | |
1629 | if (get_oid("HEAD", &options.orig_head)) | |
1630 | die(_("Could not resolve HEAD to a revision")); | |
e65123a7 PK |
1631 | } else |
1632 | BUG("unexpected number of arguments left to parse"); | |
ac7f467f | 1633 | |
2803d800 | 1634 | if (options.fork_point > 0) { |
92d0d74e PK |
1635 | struct commit *head = |
1636 | lookup_commit_reference(the_repository, | |
1637 | &options.orig_head); | |
1638 | options.restrict_revision = | |
1639 | get_fork_point(options.upstream_name, head); | |
1640 | } | |
1641 | ||
e1ff0a32 | 1642 | if (repo_read_index(the_repository) < 0) |
e0333e5c PK |
1643 | die(_("could not read index")); |
1644 | ||
6defce2b | 1645 | if (options.autostash) { |
9bb3dea4 DL |
1646 | create_autostash(the_repository, state_dir_path("autostash", &options), |
1647 | DEFAULT_REFLOG_ACTION); | |
6defce2b PK |
1648 | } |
1649 | ||
5b02ca38 | 1650 | if (require_clean_work_tree(the_repository, "rebase", |
e0333e5c | 1651 | _("Please commit or stash them."), 1, 1)) { |
35f070b4 | 1652 | ret = -1; |
e0333e5c | 1653 | goto cleanup; |
ac7f467f PK |
1654 | } |
1655 | ||
9a48a615 PK |
1656 | /* |
1657 | * Now we are rebasing commits upstream..orig_head (or with --root, | |
1658 | * everything leading up to orig_head) on top of onto. | |
1659 | */ | |
1660 | ||
1661 | /* | |
1662 | * Check if we are already based on onto with linear history, | |
c0efb4c1 | 1663 | * in which case we could fast-forward without replacing the commits |
befb89ce EN |
1664 | * with new commits recreated by replaying their changes. |
1665 | * | |
1666 | * Note that can_fast_forward() initializes merge_base, so we have to | |
1667 | * call it before checking allow_preemptive_ff. | |
9a48a615 | 1668 | */ |
4effc5bc DL |
1669 | if (can_fast_forward(options.onto, options.upstream, options.restrict_revision, |
1670 | &options.orig_head, &merge_base) && | |
befb89ce | 1671 | allow_preemptive_ff) { |
9a48a615 PK |
1672 | int flag; |
1673 | ||
1ed9c14f | 1674 | if (!(options.flags & REBASE_FORCE)) { |
e65123a7 PK |
1675 | /* Lazily switch to the target branch if needed... */ |
1676 | if (options.switch_to) { | |
e65123a7 | 1677 | strbuf_reset(&buf); |
13a5a9f0 JS |
1678 | strbuf_addf(&buf, "%s: checkout %s", |
1679 | getenv(GIT_REFLOG_ACTION_ENVIRONMENT), | |
e65123a7 | 1680 | options.switch_to); |
f213f069 DL |
1681 | if (reset_head(the_repository, |
1682 | &options.orig_head, "checkout", | |
8581df65 OS |
1683 | options.head_name, |
1684 | RESET_HEAD_RUN_POST_CHECKOUT_HOOK, | |
f213f069 DL |
1685 | NULL, buf.buf, |
1686 | DEFAULT_REFLOG_ACTION) < 0) { | |
35f070b4 | 1687 | ret = error(_("could not switch to " |
e65123a7 PK |
1688 | "%s"), |
1689 | options.switch_to); | |
1690 | goto cleanup; | |
1691 | } | |
1692 | } | |
1693 | ||
1ed9c14f PK |
1694 | if (!(options.flags & REBASE_NO_QUIET)) |
1695 | ; /* be quiet */ | |
1696 | else if (!strcmp(branch_name, "HEAD") && | |
1697 | resolve_ref_unsafe("HEAD", 0, NULL, &flag)) | |
1698 | puts(_("HEAD is up to date.")); | |
1699 | else | |
1700 | printf(_("Current branch %s is up to date.\n"), | |
1701 | branch_name); | |
35f070b4 | 1702 | ret = finish_rebase(&options); |
1ed9c14f PK |
1703 | goto cleanup; |
1704 | } else if (!(options.flags & REBASE_NO_QUIET)) | |
9a48a615 PK |
1705 | ; /* be quiet */ |
1706 | else if (!strcmp(branch_name, "HEAD") && | |
1707 | resolve_ref_unsafe("HEAD", 0, NULL, &flag)) | |
1708 | puts(_("HEAD is up to date, rebase forced.")); | |
1709 | else | |
1710 | printf(_("Current branch %s is up to date, rebase " | |
1711 | "forced.\n"), branch_name); | |
1712 | } | |
1713 | ||
06e4775a PK |
1714 | /* If a hook exists, give it a chance to interrupt*/ |
1715 | if (!ok_to_skip_pre_rebase && | |
25d4e02c | 1716 | run_hooks_l("pre-rebase", options.upstream_arg, |
06e4775a PK |
1717 | argc ? argv[0] : NULL, NULL)) |
1718 | die(_("The pre-rebase hook refused to rebase.")); | |
1719 | ||
bff014da PK |
1720 | if (options.flags & REBASE_DIFFSTAT) { |
1721 | struct diff_options opts; | |
1722 | ||
8797f0f0 JS |
1723 | if (options.flags & REBASE_VERBOSE) { |
1724 | if (is_null_oid(&merge_base)) | |
1725 | printf(_("Changes to %s:\n"), | |
1726 | oid_to_hex(&options.onto->object.oid)); | |
1727 | else | |
1728 | printf(_("Changes from %s to %s:\n"), | |
1729 | oid_to_hex(&merge_base), | |
1730 | oid_to_hex(&options.onto->object.oid)); | |
1731 | } | |
bff014da PK |
1732 | |
1733 | /* We want color (if set), but no pager */ | |
1734 | diff_setup(&opts); | |
1735 | opts.stat_width = -1; /* use full terminal width */ | |
1736 | opts.stat_graph_width = -1; /* respect statGraphWidth config */ | |
1737 | opts.output_format |= | |
1738 | DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT; | |
1739 | opts.detect_rename = DIFF_DETECT_RENAME; | |
1740 | diff_setup_done(&opts); | |
8797f0f0 JS |
1741 | diff_tree_oid(is_null_oid(&merge_base) ? |
1742 | the_hash_algo->empty_tree : &merge_base, | |
1743 | &options.onto->object.oid, "", &opts); | |
bff014da PK |
1744 | diffcore_std(&opts); |
1745 | diff_flush(&opts); | |
1746 | } | |
1747 | ||
10cdb9f3 | 1748 | if (is_merge(&options)) |
361badd3 PK |
1749 | goto run_rebase; |
1750 | ||
bff014da PK |
1751 | /* Detach HEAD and reset the tree */ |
1752 | if (options.flags & REBASE_NO_QUIET) | |
1753 | printf(_("First, rewinding head to replay your work on top of " | |
1754 | "it...\n")); | |
1755 | ||
13a5a9f0 JS |
1756 | strbuf_addf(&msg, "%s: checkout %s", |
1757 | getenv(GIT_REFLOG_ACTION_ENVIRONMENT), options.onto_name); | |
f213f069 | 1758 | if (reset_head(the_repository, &options.onto->object.oid, "checkout", NULL, |
cbea6461 | 1759 | RESET_HEAD_DETACH | RESET_ORIG_HEAD | |
9fbcc3d2 | 1760 | RESET_HEAD_RUN_POST_CHECKOUT_HOOK, |
f213f069 | 1761 | NULL, msg.buf, DEFAULT_REFLOG_ACTION)) |
ac7f467f PK |
1762 | die(_("Could not detach HEAD")); |
1763 | strbuf_release(&msg); | |
1764 | ||
7eecfa56 PK |
1765 | /* |
1766 | * If the onto is a proper descendant of the tip of the branch, then | |
1767 | * we just fast-forwarded. | |
1768 | */ | |
1769 | strbuf_reset(&msg); | |
d2c4e629 | 1770 | if (oideq(&merge_base, &options.orig_head)) { |
eff199a6 | 1771 | printf(_("Fast-forwarded %s to %s.\n"), |
7eecfa56 PK |
1772 | branch_name, options.onto_name); |
1773 | strbuf_addf(&msg, "rebase finished: %s onto %s", | |
1774 | options.head_name ? options.head_name : "detached HEAD", | |
1775 | oid_to_hex(&options.onto->object.oid)); | |
f213f069 DL |
1776 | reset_head(the_repository, NULL, "Fast-forwarded", options.head_name, |
1777 | RESET_HEAD_REFS_ONLY, "HEAD", msg.buf, | |
1778 | DEFAULT_REFLOG_ACTION); | |
7eecfa56 | 1779 | strbuf_release(&msg); |
35f070b4 | 1780 | ret = finish_rebase(&options); |
7eecfa56 PK |
1781 | goto cleanup; |
1782 | } | |
1783 | ||
ac7f467f PK |
1784 | strbuf_addf(&revisions, "%s..%s", |
1785 | options.root ? oid_to_hex(&options.onto->object.oid) : | |
1786 | (options.restrict_revision ? | |
1787 | oid_to_hex(&options.restrict_revision->object.oid) : | |
1788 | oid_to_hex(&options.upstream->object.oid)), | |
1789 | oid_to_hex(&options.orig_head)); | |
1790 | ||
1791 | options.revisions = revisions.buf; | |
1792 | ||
f9573628 | 1793 | run_rebase: |
35f070b4 | 1794 | ret = run_specific_rebase(&options, action); |
ac7f467f | 1795 | |
e0333e5c | 1796 | cleanup: |
7372eaeb | 1797 | strbuf_release(&buf); |
ac7f467f PK |
1798 | strbuf_release(&revisions); |
1799 | free(options.head_name); | |
12026a41 | 1800 | free(options.gpg_sign_opt); |
68e46d78 | 1801 | free(options.cmd); |
b54cf3a7 | 1802 | free(options.strategy); |
805b789a | 1803 | strbuf_release(&options.git_format_patch_opt); |
9dba809a | 1804 | free(squash_onto_name); |
35f070b4 | 1805 | return !!ret; |
55071ea2 | 1806 | } |