diff options
Diffstat (limited to 'third_party/git/builtin/rebase.c')
| -rw-r--r-- | third_party/git/builtin/rebase.c | 870 |
1 files changed, 403 insertions, 467 deletions
diff --git a/third_party/git/builtin/rebase.c b/third_party/git/builtin/rebase.c index 670096c065..eeca53382f 100644 --- a/third_party/git/builtin/rebase.c +++ b/third_party/git/builtin/rebase.c @@ -8,7 +8,7 @@ #include "builtin.h" #include "run-command.h" #include "exec-cmd.h" -#include "argv-array.h" +#include "strvec.h" #include "dir.h" #include "packfile.h" #include "refs.h" @@ -27,10 +27,13 @@ #include "branch.h" #include "sequencer.h" #include "rebase-interactive.h" +#include "reset.h" + +#define DEFAULT_REFLOG_ACTION "rebase" static char const * const builtin_rebase_usage[] = { - N_("git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] " - "[<upstream>] [<branch>]"), + N_("git rebase [-i] [options] [--exec <cmd>] " + "[--onto <newbase> | --keep-base] [<upstream> [<branch>]]"), N_("git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] " "--root [<branch>]"), N_("git rebase --continue | --abort | --skip | --edit-todo"), @@ -44,14 +47,22 @@ static GIT_PATH_FUNC(merge_dir, "rebase-merge") enum rebase_type { REBASE_UNSPECIFIED = -1, - REBASE_AM, + REBASE_APPLY, REBASE_MERGE, - REBASE_INTERACTIVE, REBASE_PRESERVE_MERGES }; +enum empty_type { + EMPTY_UNSPECIFIED = -1, + EMPTY_DROP, + EMPTY_KEEP, + EMPTY_ASK +}; + struct rebase_options { enum rebase_type type; + enum empty_type empty; + const char *default_backend; const char *state_dir; struct commit *upstream; const char *upstream_name; @@ -62,7 +73,7 @@ struct rebase_options { const char *onto_name; const char *revisions; const char *switch_to; - int root; + int root, root_with_onto; struct object_id *squash_onto; struct commit *restrict_revision; int dont_finish_rebase; @@ -73,7 +84,7 @@ struct rebase_options { REBASE_FORCE = 1<<3, REBASE_INTERACTIVE_EXPLICIT = 1<<4, } flags; - struct argv_array git_am_opts; + struct strvec git_am_opts; const char *action; int signoff; int allow_rerere_autoupdate; @@ -81,6 +92,8 @@ struct rebase_options { int autosquash; char *gpg_sign_opt; int autostash; + int committer_date_is_author_date; + int ignore_date; char *cmd; int allow_empty_message; int rebase_merges, rebase_cousins; @@ -88,12 +101,16 @@ struct rebase_options { struct strbuf git_format_patch_opt; int reschedule_failed_exec; int use_legacy_rebase; + int reapply_cherry_picks; }; #define REBASE_OPTIONS_INIT { \ .type = REBASE_UNSPECIFIED, \ + .empty = EMPTY_UNSPECIFIED, \ + .keep_empty = 1, \ + .default_backend = "merge", \ .flags = REBASE_NO_QUIET, \ - .git_am_opts = ARGV_ARRAY_INIT, \ + .git_am_opts = STRVEC_INIT, \ .git_format_patch_opt = STRBUF_INIT \ } @@ -110,13 +127,25 @@ static struct replay_opts get_replay_opts(const struct rebase_options *opts) replay.allow_rerere_auto = opts->allow_rerere_autoupdate; replay.allow_empty = 1; replay.allow_empty_message = opts->allow_empty_message; + replay.drop_redundant_commits = (opts->empty == EMPTY_DROP); + replay.keep_redundant_commits = (opts->empty == EMPTY_KEEP); + replay.quiet = !(opts->flags & REBASE_NO_QUIET); replay.verbose = opts->flags & REBASE_VERBOSE; replay.reschedule_failed_exec = opts->reschedule_failed_exec; + replay.committer_date_is_author_date = + opts->committer_date_is_author_date; + replay.ignore_date = opts->ignore_date; replay.gpg_sign = xstrdup_or_null(opts->gpg_sign_opt); replay.strategy = opts->strategy; + if (opts->strategy_opts) parse_strategy_opts(&replay, opts->strategy_opts); + if (opts->squash_onto) { + oidcpy(&replay.squash_onto, opts->squash_onto); + replay.have_squash_onto = 1; + } + return replay; } @@ -241,21 +270,17 @@ static int edit_todo_file(unsigned flags) } static int get_revision_ranges(struct commit *upstream, struct commit *onto, - const char **head_hash, + struct object_id *orig_head, const char **head_hash, char **revisions, char **shortrevisions) { struct commit *base_rev = upstream ? upstream : onto; const char *shorthead; - struct object_id orig_head; - if (get_oid("HEAD", &orig_head)) - return error(_("no HEAD?")); - - *head_hash = find_unique_abbrev(&orig_head, GIT_MAX_HEXSZ); + *head_hash = find_unique_abbrev(orig_head, GIT_MAX_HEXSZ); *revisions = xstrfmt("%s...%s", oid_to_hex(&base_rev->object.oid), *head_hash); - shorthead = find_unique_abbrev(&orig_head, DEFAULT_ABBREV); + shorthead = find_unique_abbrev(orig_head, DEFAULT_ABBREV); if (upstream) { const char *shortrev; @@ -304,17 +329,13 @@ static int do_interactive_rebase(struct rebase_options *opts, unsigned flags) int ret; const char *head_hash = NULL; char *revisions = NULL, *shortrevisions = NULL; - struct argv_array make_script_args = ARGV_ARRAY_INIT; + struct strvec make_script_args = STRVEC_INIT; struct todo_list todo_list = TODO_LIST_INIT; struct replay_opts replay = get_replay_opts(opts); struct string_list commands = STRING_LIST_INIT_DUP; - if (prepare_branch_to_be_rebased(the_repository, &replay, - opts->switch_to)) - return -1; - - if (get_revision_ranges(opts->upstream, opts->onto, &head_hash, - &revisions, &shortrevisions)) + if (get_revision_ranges(opts->upstream, opts->onto, &opts->orig_head, + &head_hash, &revisions, &shortrevisions)) return -1; if (init_basic_state(&replay, @@ -330,13 +351,13 @@ static int do_interactive_rebase(struct rebase_options *opts, unsigned flags) write_file(path_squash_onto(), "%s\n", oid_to_hex(opts->squash_onto)); - argv_array_pushl(&make_script_args, "", revisions, NULL); + strvec_pushl(&make_script_args, "", revisions, NULL); if (opts->restrict_revision) - argv_array_push(&make_script_args, - oid_to_hex(&opts->restrict_revision->object.oid)); + strvec_pushf(&make_script_args, "^%s", + oid_to_hex(&opts->restrict_revision->object.oid)); ret = sequencer_make_script(the_repository, &todo_list.buf, - make_script_args.argc, make_script_args.argv, + make_script_args.nr, make_script_args.v, flags); if (ret) @@ -357,12 +378,12 @@ static int do_interactive_rebase(struct rebase_options *opts, unsigned flags) free(revisions); free(shortrevisions); todo_list_release(&todo_list); - argv_array_clear(&make_script_args); + strvec_clear(&make_script_args); return ret; } -static int run_rebase_interactive(struct rebase_options *opts, +static int run_sequencer_rebase(struct rebase_options *opts, enum action command) { unsigned flags = 0; @@ -374,7 +395,9 @@ static int run_rebase_interactive(struct rebase_options *opts, flags |= abbreviate_commands ? TODO_LIST_ABBREVIATE_CMDS : 0; flags |= opts->rebase_merges ? TODO_LIST_REBASE_MERGES : 0; flags |= opts->rebase_cousins > 0 ? TODO_LIST_REBASE_COUSINS : 0; + flags |= opts->root_with_onto ? TODO_LIST_ROOT_WITH_ONTO : 0; flags |= command == ACTION_SHORTEN_OIDS ? TODO_LIST_SHORTEN_IDS : 0; + flags |= opts->reapply_cherry_picks ? TODO_LIST_REAPPLY_CHERRY_PICKS : 0; switch (command) { case ACTION_NONE: { @@ -403,7 +426,7 @@ static int run_rebase_interactive(struct rebase_options *opts, struct child_process cmd = CHILD_PROCESS_INIT; cmd.git_cmd = 1; - argv_array_pushl(&cmd.args, "show", "REBASE_HEAD", "--", NULL); + strvec_pushl(&cmd.args, "show", "REBASE_HEAD", "--", NULL); ret = run_command(&cmd); break; @@ -433,6 +456,20 @@ static int run_rebase_interactive(struct rebase_options *opts, return ret; } +static void imply_merge(struct rebase_options *opts, const char *option); +static int parse_opt_keep_empty(const struct option *opt, const char *arg, + int unset) +{ + struct rebase_options *opts = opt->value; + + BUG_ON_OPT_ARG(arg); + + imply_merge(opts, unset ? "--no-keep-empty" : "--keep-empty"); + opts->keep_empty = !unset; + opts->type = REBASE_MERGE; + return 0; +} + static const char * const builtin_rebase_interactive_usage[] = { N_("git rebase--interactive [<options>]"), NULL @@ -446,9 +483,13 @@ int cmd_rebase__interactive(int argc, const char **argv, const char *prefix) struct option options[] = { OPT_NEGBIT(0, "ff", &opts.flags, N_("allow fast-forward"), REBASE_FORCE), - OPT_BOOL(0, "keep-empty", &opts.keep_empty, N_("keep empty commits")), - OPT_BOOL(0, "allow-empty-message", &opts.allow_empty_message, - N_("allow commits with empty messages")), + OPT_CALLBACK_F('k', "keep-empty", &options, NULL, + N_("keep commits which start empty"), + PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, + parse_opt_keep_empty), + OPT_BOOL_F(0, "allow-empty-message", &opts.allow_empty_message, + N_("allow commits with empty messages"), + PARSE_OPT_HIDDEN), OPT_BOOL(0, "rebase-merges", &opts.rebase_merges, N_("rebase merge commits")), OPT_BOOL(0, "rebase-cousins", &opts.rebase_cousins, N_("keep original branch points of cousins")), @@ -518,28 +559,26 @@ int cmd_rebase__interactive(int argc, const char **argv, const char *prefix) warning(_("--[no-]rebase-cousins has no effect without " "--rebase-merges")); - return !!run_rebase_interactive(&opts, command); + return !!run_sequencer_rebase(&opts, command); } -static int is_interactive(struct rebase_options *opts) +static int is_merge(struct rebase_options *opts) { - return opts->type == REBASE_INTERACTIVE || + return opts->type == REBASE_MERGE || opts->type == REBASE_PRESERVE_MERGES; } -static void imply_interactive(struct rebase_options *opts, const char *option) +static void imply_merge(struct rebase_options *opts, const char *option) { switch (opts->type) { - case REBASE_AM: - die(_("%s requires an interactive rebase"), option); + case REBASE_APPLY: + die(_("%s requires the merge backend"), option); break; - case REBASE_INTERACTIVE: + case REBASE_MERGE: case REBASE_PRESERVE_MERGES: break; - case REBASE_MERGE: - /* we now implement --merge via --interactive */ default: - opts->type = REBASE_INTERACTIVE; /* implied */ + opts->type = REBASE_MERGE; /* implied */ break; } } @@ -560,15 +599,6 @@ static const char *state_dir_path(const char *filename, struct rebase_options *o return path.buf; } -/* Read one file, then strip line endings */ -static int read_one(const char *path, struct strbuf *buf) -{ - if (strbuf_read_file(buf, path, 0) < 0) - return error_errno(_("could not read '%s'"), path); - strbuf_trim_trailing_newline(buf); - return 0; -} - /* Initialize the rebase options from the state directory. */ static int read_basic_state(struct rebase_options *opts) { @@ -576,8 +606,10 @@ static int read_basic_state(struct rebase_options *opts) struct strbuf buf = STRBUF_INIT; struct object_id oid; - if (read_one(state_dir_path("head-name", opts), &head_name) || - read_one(state_dir_path("onto", opts), &buf)) + if (!read_oneliner(&head_name, state_dir_path("head-name", opts), + READ_ONELINER_WARN_MISSING) || + !read_oneliner(&buf, state_dir_path("onto", opts), + READ_ONELINER_WARN_MISSING)) return -1; opts->head_name = starts_with(head_name.buf, "refs/") ? xstrdup(head_name.buf) : NULL; @@ -593,9 +625,11 @@ static int read_basic_state(struct rebase_options *opts) */ strbuf_reset(&buf); if (file_exists(state_dir_path("orig-head", opts))) { - if (read_one(state_dir_path("orig-head", opts), &buf)) + if (!read_oneliner(&buf, state_dir_path("orig-head", opts), + READ_ONELINER_WARN_MISSING)) return -1; - } else if (read_one(state_dir_path("head", opts), &buf)) + } else if (!read_oneliner(&buf, state_dir_path("head", opts), + READ_ONELINER_WARN_MISSING)) return -1; if (get_oid(buf.buf, &opts->orig_head)) return error(_("invalid orig-head: '%s'"), buf.buf); @@ -615,8 +649,8 @@ static int read_basic_state(struct rebase_options *opts) if (file_exists(state_dir_path("allow_rerere_autoupdate", opts))) { strbuf_reset(&buf); - if (read_one(state_dir_path("allow_rerere_autoupdate", opts), - &buf)) + if (!read_oneliner(&buf, state_dir_path("allow_rerere_autoupdate", opts), + READ_ONELINER_WARN_MISSING)) return -1; if (!strcmp(buf.buf, "--rerere-autoupdate")) opts->allow_rerere_autoupdate = RERERE_AUTOUPDATE; @@ -629,8 +663,8 @@ static int read_basic_state(struct rebase_options *opts) if (file_exists(state_dir_path("gpg_sign_opt", opts))) { strbuf_reset(&buf); - if (read_one(state_dir_path("gpg_sign_opt", opts), - &buf)) + if (!read_oneliner(&buf, state_dir_path("gpg_sign_opt", opts), + READ_ONELINER_WARN_MISSING)) return -1; free(opts->gpg_sign_opt); opts->gpg_sign_opt = xstrdup(buf.buf); @@ -638,7 +672,8 @@ static int read_basic_state(struct rebase_options *opts) if (file_exists(state_dir_path("strategy", opts))) { strbuf_reset(&buf); - if (read_one(state_dir_path("strategy", opts), &buf)) + if (!read_oneliner(&buf, state_dir_path("strategy", opts), + READ_ONELINER_WARN_MISSING)) return -1; free(opts->strategy); opts->strategy = xstrdup(buf.buf); @@ -646,7 +681,8 @@ static int read_basic_state(struct rebase_options *opts) if (file_exists(state_dir_path("strategy_opts", opts))) { strbuf_reset(&buf); - if (read_one(state_dir_path("strategy_opts", opts), &buf)) + if (!read_oneliner(&buf, state_dir_path("strategy_opts", opts), + READ_ONELINER_WARN_MISSING)) return -1; free(opts->strategy_opts); opts->strategy_opts = xstrdup(buf.buf); @@ -665,8 +701,8 @@ static int rebase_write_basic_state(struct rebase_options *opts) opts->onto ? oid_to_hex(&opts->onto->object.oid) : ""); write_file(state_dir_path("orig-head", opts), "%s", oid_to_hex(&opts->orig_head)); - write_file(state_dir_path("quiet", opts), "%s", - opts->flags & REBASE_NO_QUIET ? "" : "t"); + if (!(opts->flags & REBASE_NO_QUIET)) + write_file(state_dir_path("quiet", opts), "%s", ""); if (opts->flags & REBASE_VERBOSE) write_file(state_dir_path("verbose", opts), "%s", ""); if (opts->strategy) @@ -684,71 +720,25 @@ static int rebase_write_basic_state(struct rebase_options *opts) write_file(state_dir_path("gpg_sign_opt", opts), "%s", opts->gpg_sign_opt); if (opts->signoff) - write_file(state_dir_path("strategy", opts), "--signoff"); + write_file(state_dir_path("signoff", opts), "--signoff"); return 0; } -static int apply_autostash(struct rebase_options *opts) -{ - const char *path = state_dir_path("autostash", opts); - struct strbuf autostash = STRBUF_INIT; - struct child_process stash_apply = CHILD_PROCESS_INIT; - - if (!file_exists(path)) - return 0; - - if (read_one(path, &autostash)) - return error(_("Could not read '%s'"), path); - /* Ensure that the hash is not mistaken for a number */ - strbuf_addstr(&autostash, "^0"); - argv_array_pushl(&stash_apply.args, - "stash", "apply", autostash.buf, NULL); - stash_apply.git_cmd = 1; - stash_apply.no_stderr = stash_apply.no_stdout = - stash_apply.no_stdin = 1; - if (!run_command(&stash_apply)) - printf(_("Applied autostash.\n")); - else { - struct argv_array args = ARGV_ARRAY_INIT; - int res = 0; - - argv_array_pushl(&args, - "stash", "store", "-m", "autostash", "-q", - autostash.buf, NULL); - if (run_command_v_opt(args.argv, RUN_GIT_CMD)) - res = error(_("Cannot store %s"), autostash.buf); - argv_array_clear(&args); - strbuf_release(&autostash); - if (res) - return res; - - fprintf(stderr, - _("Applying autostash resulted in conflicts.\n" - "Your changes are safe in the stash.\n" - "You can run \"git stash pop\" or \"git stash drop\" " - "at any time.\n")); - } - - strbuf_release(&autostash); - return 0; -} - static int finish_rebase(struct rebase_options *opts) { struct strbuf dir = STRBUF_INIT; - const char *argv_gc_auto[] = { "gc", "--auto", NULL }; int ret = 0; delete_ref(NULL, "REBASE_HEAD", NULL, REF_NO_DEREF); - apply_autostash(opts); + apply_autostash(state_dir_path("autostash", opts)); close_object_store(the_repository->objects); /* - * We ignore errors in 'gc --auto', since the + * We ignore errors in 'git maintenance run --auto', since the * user should see them. */ - run_command_v_opt(argv_gc_auto, RUN_GIT_CMD); - if (opts->type == REBASE_INTERACTIVE) { + run_auto_maintenance(!(opts->flags & (REBASE_NO_QUIET|REBASE_VERBOSE))); + if (opts->type == REBASE_MERGE) { struct replay_opts replay = REPLAY_OPTS_INIT; replay.action = REPLAY_INTERACTIVE_REBASE; @@ -786,143 +776,6 @@ static void add_var(struct strbuf *buf, const char *name, const char *value) } } -#define GIT_REFLOG_ACTION_ENVIRONMENT "GIT_REFLOG_ACTION" - -#define RESET_HEAD_DETACH (1<<0) -#define RESET_HEAD_HARD (1<<1) -#define RESET_HEAD_RUN_POST_CHECKOUT_HOOK (1<<2) -#define RESET_HEAD_REFS_ONLY (1<<3) -#define RESET_ORIG_HEAD (1<<4) - -static int reset_head(struct object_id *oid, const char *action, - const char *switch_to_branch, unsigned flags, - const char *reflog_orig_head, const char *reflog_head) -{ - unsigned detach_head = flags & RESET_HEAD_DETACH; - unsigned reset_hard = flags & RESET_HEAD_HARD; - unsigned run_hook = flags & RESET_HEAD_RUN_POST_CHECKOUT_HOOK; - unsigned refs_only = flags & RESET_HEAD_REFS_ONLY; - unsigned update_orig_head = flags & RESET_ORIG_HEAD; - struct object_id head_oid; - struct tree_desc desc[2] = { { NULL }, { NULL } }; - struct lock_file lock = LOCK_INIT; - struct unpack_trees_options unpack_tree_opts; - struct tree *tree; - const char *reflog_action; - struct strbuf msg = STRBUF_INIT; - size_t prefix_len; - struct object_id *orig = NULL, oid_orig, - *old_orig = NULL, oid_old_orig; - int ret = 0, nr = 0; - - if (switch_to_branch && !starts_with(switch_to_branch, "refs/")) - BUG("Not a fully qualified branch: '%s'", switch_to_branch); - - if (!refs_only && hold_locked_index(&lock, LOCK_REPORT_ON_ERROR) < 0) { - ret = -1; - goto leave_reset_head; - } - - if ((!oid || !reset_hard) && get_oid("HEAD", &head_oid)) { - ret = error(_("could not determine HEAD revision")); - goto leave_reset_head; - } - - if (!oid) - oid = &head_oid; - - if (refs_only) - goto reset_head_refs; - - memset(&unpack_tree_opts, 0, sizeof(unpack_tree_opts)); - setup_unpack_trees_porcelain(&unpack_tree_opts, action); - unpack_tree_opts.head_idx = 1; - unpack_tree_opts.src_index = the_repository->index; - unpack_tree_opts.dst_index = the_repository->index; - unpack_tree_opts.fn = reset_hard ? oneway_merge : twoway_merge; - unpack_tree_opts.update = 1; - unpack_tree_opts.merge = 1; - if (!detach_head) - unpack_tree_opts.reset = 1; - - if (repo_read_index_unmerged(the_repository) < 0) { - ret = error(_("could not read index")); - goto leave_reset_head; - } - - if (!reset_hard && !fill_tree_descriptor(the_repository, &desc[nr++], &head_oid)) { - ret = error(_("failed to find tree of %s"), - oid_to_hex(&head_oid)); - goto leave_reset_head; - } - - if (!fill_tree_descriptor(the_repository, &desc[nr++], oid)) { - ret = error(_("failed to find tree of %s"), oid_to_hex(oid)); - goto leave_reset_head; - } - - if (unpack_trees(nr, desc, &unpack_tree_opts)) { - ret = -1; - goto leave_reset_head; - } - - tree = parse_tree_indirect(oid); - prime_cache_tree(the_repository, the_repository->index, tree); - - if (write_locked_index(the_repository->index, &lock, COMMIT_LOCK) < 0) { - ret = error(_("could not write index")); - goto leave_reset_head; - } - -reset_head_refs: - reflog_action = getenv(GIT_REFLOG_ACTION_ENVIRONMENT); - strbuf_addf(&msg, "%s: ", reflog_action ? reflog_action : "rebase"); - prefix_len = msg.len; - - if (update_orig_head) { - if (!get_oid("ORIG_HEAD", &oid_old_orig)) - old_orig = &oid_old_orig; - if (!get_oid("HEAD", &oid_orig)) { - orig = &oid_orig; - if (!reflog_orig_head) { - strbuf_addstr(&msg, "updating ORIG_HEAD"); - reflog_orig_head = msg.buf; - } - update_ref(reflog_orig_head, "ORIG_HEAD", orig, - old_orig, 0, UPDATE_REFS_MSG_ON_ERR); - } else if (old_orig) - delete_ref(NULL, "ORIG_HEAD", old_orig, 0); - } - - if (!reflog_head) { - strbuf_setlen(&msg, prefix_len); - strbuf_addstr(&msg, "updating HEAD"); - reflog_head = msg.buf; - } - if (!switch_to_branch) - ret = update_ref(reflog_head, "HEAD", oid, orig, - detach_head ? REF_NO_DEREF : 0, - UPDATE_REFS_MSG_ON_ERR); - else { - ret = update_ref(reflog_head, switch_to_branch, oid, - NULL, 0, UPDATE_REFS_MSG_ON_ERR); - if (!ret) - ret = create_symref("HEAD", switch_to_branch, - reflog_head); - } - if (run_hook) - run_hook_le(NULL, "post-checkout", - oid_to_hex(orig ? orig : &null_oid), - oid_to_hex(oid), "1", NULL); - -leave_reset_head: - strbuf_release(&msg); - rollback_lock_file(&lock); - while (nr) - free((void *)desc[--nr].buffer); - return ret; -} - static int move_to_original_branch(struct rebase_options *opts) { struct strbuf orig_head_reflog = STRBUF_INIT, head_reflog = STRBUF_INIT; @@ -938,8 +791,10 @@ static int move_to_original_branch(struct rebase_options *opts) opts->head_name, oid_to_hex(&opts->onto->object.oid)); strbuf_addf(&head_reflog, "rebase finished: returning to %s", opts->head_name); - ret = reset_head(NULL, "", opts->head_name, RESET_HEAD_REFS_ONLY, - orig_head_reflog.buf, head_reflog.buf); + ret = reset_head(the_repository, NULL, "", opts->head_name, + RESET_HEAD_REFS_ONLY, + orig_head_reflog.buf, head_reflog.buf, + DEFAULT_REFLOG_ACTION); strbuf_release(&orig_head_reflog); strbuf_release(&head_reflog); @@ -962,13 +817,13 @@ static int run_am(struct rebase_options *opts) char *rebased_patches; am.git_cmd = 1; - argv_array_push(&am.args, "am"); + strvec_push(&am.args, "am"); if (opts->action && !strcmp("continue", opts->action)) { - argv_array_push(&am.args, "--resolved"); - argv_array_pushf(&am.args, "--resolvemsg=%s", resolvemsg); + strvec_push(&am.args, "--resolved"); + strvec_pushf(&am.args, "--resolvemsg=%s", resolvemsg); if (opts->gpg_sign_opt) - argv_array_push(&am.args, opts->gpg_sign_opt); + strvec_push(&am.args, opts->gpg_sign_opt); status = run_command(&am); if (status) return status; @@ -976,8 +831,8 @@ static int run_am(struct rebase_options *opts) return move_to_original_branch(opts); } if (opts->action && !strcmp("skip", opts->action)) { - argv_array_push(&am.args, "--skip"); - argv_array_pushf(&am.args, "--resolvemsg=%s", resolvemsg); + strvec_push(&am.args, "--skip"); + strvec_pushf(&am.args, "--resolvemsg=%s", resolvemsg); status = run_command(&am); if (status) return status; @@ -985,7 +840,7 @@ static int run_am(struct rebase_options *opts) return move_to_original_branch(opts); } if (opts->action && !strcmp("show-current-patch", opts->action)) { - argv_array_push(&am.args, "--show-current-patch"); + strvec_push(&am.args, "--show-current-patch"); return run_command(&am); } @@ -1003,31 +858,33 @@ static int run_am(struct rebase_options *opts) status = error_errno(_("could not open '%s' for writing"), rebased_patches); free(rebased_patches); - argv_array_clear(&am.args); + strvec_clear(&am.args); return status; } format_patch.git_cmd = 1; - argv_array_pushl(&format_patch.args, "format-patch", "-k", "--stdout", - "--full-index", "--cherry-pick", "--right-only", - "--src-prefix=a/", "--dst-prefix=b/", "--no-renames", - "--no-cover-letter", "--pretty=mboxrd", "--topo-order", NULL); + strvec_pushl(&format_patch.args, "format-patch", "-k", "--stdout", + "--full-index", "--cherry-pick", "--right-only", + "--src-prefix=a/", "--dst-prefix=b/", "--no-renames", + "--no-cover-letter", "--pretty=mboxrd", "--topo-order", + "--no-base", NULL); if (opts->git_format_patch_opt.len) - argv_array_split(&format_patch.args, - opts->git_format_patch_opt.buf); - argv_array_push(&format_patch.args, revisions.buf); + strvec_split(&format_patch.args, + opts->git_format_patch_opt.buf); + strvec_push(&format_patch.args, revisions.buf); if (opts->restrict_revision) - argv_array_pushf(&format_patch.args, "^%s", - oid_to_hex(&opts->restrict_revision->object.oid)); + strvec_pushf(&format_patch.args, "^%s", + oid_to_hex(&opts->restrict_revision->object.oid)); status = run_command(&format_patch); if (status) { unlink(rebased_patches); free(rebased_patches); - argv_array_clear(&am.args); + strvec_clear(&am.args); - reset_head(&opts->orig_head, "checkout", opts->head_name, 0, - "HEAD", NULL); + reset_head(the_repository, &opts->orig_head, "checkout", + opts->head_name, 0, + "HEAD", NULL, DEFAULT_REFLOG_ACTION); error(_("\ngit encountered an error while preparing the " "patches to replay\n" "these revisions:\n" @@ -1045,20 +902,20 @@ static int run_am(struct rebase_options *opts) status = error_errno(_("could not open '%s' for reading"), rebased_patches); free(rebased_patches); - argv_array_clear(&am.args); + strvec_clear(&am.args); return status; } - argv_array_pushv(&am.args, opts->git_am_opts.argv); - argv_array_push(&am.args, "--rebasing"); - argv_array_pushf(&am.args, "--resolvemsg=%s", resolvemsg); - argv_array_push(&am.args, "--patch-format=mboxrd"); + strvec_pushv(&am.args, opts->git_am_opts.v); + strvec_push(&am.args, "--rebasing"); + strvec_pushf(&am.args, "--resolvemsg=%s", resolvemsg); + strvec_push(&am.args, "--patch-format=mboxrd"); if (opts->allow_rerere_autoupdate == RERERE_AUTOUPDATE) - argv_array_push(&am.args, "--rerere-autoupdate"); + strvec_push(&am.args, "--rerere-autoupdate"); else if (opts->allow_rerere_autoupdate == RERERE_NOAUTOUPDATE) - argv_array_push(&am.args, "--no-rerere-autoupdate"); + strvec_push(&am.args, "--no-rerere-autoupdate"); if (opts->gpg_sign_opt) - argv_array_push(&am.args, opts->gpg_sign_opt); + strvec_push(&am.args, opts->gpg_sign_opt); status = run_command(&am); unlink(rebased_patches); free(rebased_patches); @@ -1080,8 +937,8 @@ static int run_specific_rebase(struct rebase_options *opts, enum action action) int status; const char *backend, *backend_func; - if (opts->type == REBASE_INTERACTIVE) { - /* Run builtin interactive rebase */ + if (opts->type == REBASE_MERGE) { + /* Run sequencer-based rebase */ setenv("GIT_CHERRY_PICK_HELP", resolvemsg, 1); if (!(opts->flags & REBASE_INTERACTIVE_EXPLICIT)) { setenv("GIT_SEQUENCE_EDITOR", ":", 1); @@ -1094,11 +951,11 @@ static int run_specific_rebase(struct rebase_options *opts, enum action action) opts->gpg_sign_opt = tmp; } - status = run_rebase_interactive(opts, action); + status = run_sequencer_rebase(opts, action); goto finished_rebase; } - if (opts->type == REBASE_AM) { + if (opts->type == REBASE_APPLY) { status = run_am(opts); goto finished_rebase; } @@ -1118,9 +975,7 @@ static int run_specific_rebase(struct rebase_options *opts, enum action action) add_var(&script_snippet, "revisions", opts->revisions); add_var(&script_snippet, "restrict_revision", opts->restrict_revision ? oid_to_hex(&opts->restrict_revision->object.oid) : NULL); - add_var(&script_snippet, "GIT_QUIET", - opts->flags & REBASE_NO_QUIET ? "" : "t"); - sq_quote_argv_pretty(&buf, opts->git_am_opts.argv); + sq_quote_argv_pretty(&buf, opts->git_am_opts.v); add_var(&script_snippet, "git_am_opt", buf.buf); strbuf_release(&buf); add_var(&script_snippet, "verbose", @@ -1155,7 +1010,7 @@ static int run_specific_rebase(struct rebase_options *opts, enum action action) add_var(&script_snippet, "git_format_patch_opt", opts->git_format_patch_opt.buf); - if (is_interactive(opts) && + if (is_merge(opts) && !(opts->flags & REBASE_INTERACTIVE_EXPLICIT)) { strbuf_addstr(&script_snippet, "GIT_SEQUENCE_EDITOR=:; export GIT_SEQUENCE_EDITOR; "); @@ -1180,15 +1035,15 @@ static int run_specific_rebase(struct rebase_options *opts, enum action action) finished_rebase: if (opts->dont_finish_rebase) ; /* do nothing */ - else if (opts->type == REBASE_INTERACTIVE) - ; /* interactive rebase cleans up after itself */ + else if (opts->type == REBASE_MERGE) + ; /* merge backend cleans up after itself */ else if (status == 0) { if (!file_exists(state_dir_path("stopped-sha", opts))) finish_rebase(opts); } else if (status == 2) { struct strbuf dir = STRBUF_INIT; - apply_autostash(opts); + apply_autostash(state_dir_path("autostash", opts)); strbuf_addstr(&dir, opts->state_dir); remove_dir_recursively(&dir, 0); strbuf_release(&dir); @@ -1239,6 +1094,10 @@ static int rebase_config(const char *var, const char *value, void *data) return 0; } + if (!strcmp(var, "rebase.backend")) { + return git_config_string(&opts->default_backend, var, value); + } + return git_default_config(var, value, data); } @@ -1260,28 +1119,60 @@ static int is_linear_history(struct commit *from, struct commit *to) return 1; } -static int can_fast_forward(struct commit *onto, struct object_id *head_oid, - struct object_id *merge_base) +static int can_fast_forward(struct commit *onto, struct commit *upstream, + struct commit *restrict_revision, + struct object_id *head_oid, struct object_id *merge_base) { struct commit *head = lookup_commit(the_repository, head_oid); - struct commit_list *merge_bases; - int res; + struct commit_list *merge_bases = NULL; + int res = 0; if (!head) - return 0; + goto done; merge_bases = get_merge_bases(onto, head); - if (merge_bases && !merge_bases->next) { - oidcpy(merge_base, &merge_bases->item->object.oid); - res = oideq(merge_base, &onto->object.oid); - } else { + if (!merge_bases || merge_bases->next) { oidcpy(merge_base, &null_oid); - res = 0; + goto done; } + + oidcpy(merge_base, &merge_bases->item->object.oid); + if (!oideq(merge_base, &onto->object.oid)) + goto done; + + if (restrict_revision && !oideq(&restrict_revision->object.oid, merge_base)) + goto done; + + if (!upstream) + goto done; + + free_commit_list(merge_bases); + merge_bases = get_merge_bases(upstream, head); + if (!merge_bases || merge_bases->next) + goto done; + + if (!oideq(&onto->object.oid, &merge_bases->item->object.oid)) + goto done; + + res = 1; + +done: free_commit_list(merge_bases); return res && is_linear_history(onto, head); } +static int parse_opt_am(const struct option *opt, const char *arg, int unset) +{ + struct rebase_options *opts = opt->value; + + BUG_ON_OPT_NEG(unset); + BUG_ON_OPT_ARG(arg); + + opts->type = REBASE_APPLY; + + return 0; +} + /* -i followed by -m is still -i */ static int parse_opt_merge(const struct option *opt, const char *arg, int unset) { @@ -1290,7 +1181,7 @@ static int parse_opt_merge(const struct option *opt, const char *arg, int unset) BUG_ON_OPT_NEG(unset); BUG_ON_OPT_ARG(arg); - if (!is_interactive(opts)) + if (!is_merge(opts)) opts->type = REBASE_MERGE; return 0; @@ -1305,12 +1196,35 @@ static int parse_opt_interactive(const struct option *opt, const char *arg, BUG_ON_OPT_NEG(unset); BUG_ON_OPT_ARG(arg); - opts->type = REBASE_INTERACTIVE; + opts->type = REBASE_MERGE; opts->flags |= REBASE_INTERACTIVE_EXPLICIT; return 0; } +static enum empty_type parse_empty_value(const char *value) +{ + if (!strcasecmp(value, "drop")) + return EMPTY_DROP; + else if (!strcasecmp(value, "keep")) + return EMPTY_KEEP; + else if (!strcasecmp(value, "ask")) + return EMPTY_ASK; + + die(_("unrecognized empty type '%s'; valid values are \"drop\", \"keep\", and \"ask\"."), value); +} + +static int parse_opt_empty(const struct option *opt, const char *arg, int unset) +{ + struct rebase_options *options = opt->value; + enum empty_type value = parse_empty_value(arg); + + BUG_ON_OPT_NEG(unset); + + options->empty = value; + return 0; +} + static void NORETURN error_on_missing_default_upstream(void) { struct branch *current_branch = branch_get(NULL); @@ -1346,14 +1260,14 @@ static void set_reflog_action(struct rebase_options *options) const char *env; struct strbuf buf = STRBUF_INIT; - if (!is_interactive(options)) + if (!is_merge(options)) return; env = getenv(GIT_REFLOG_ACTION_ENVIRONMENT); if (env && strcmp("rebase", env)) return; /* only override it if it is "rebase" */ - strbuf_addf(&buf, "rebase -i (%s)", options->action); + strbuf_addf(&buf, "rebase (%s)", options->action); setenv(GIT_REFLOG_ACTION_ENVIRONMENT, buf.buf, 1); strbuf_release(&buf); } @@ -1370,17 +1284,18 @@ static int check_exec_cmd(const char *cmd) return 0; } - int cmd_rebase(int argc, const char **argv, const char *prefix) { struct rebase_options options = REBASE_OPTIONS_INIT; const char *branch_name; int ret, flags, total_argc, in_progress = 0; + int keep_base = 0; int ok_to_skip_pre_rebase = 0; struct strbuf msg = STRBUF_INIT; struct strbuf revisions = STRBUF_INIT; struct strbuf buf = STRBUF_INIT; struct object_id merge_base; + int ignore_whitespace = 0; enum action action = ACTION_NONE; const char *gpg_sign = NULL; struct string_list exec = STRING_LIST_INIT_NODUP; @@ -1390,15 +1305,18 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) struct object_id squash_onto; char *squash_onto_name = NULL; int reschedule_failed_exec = -1; + int allow_preemptive_ff = 1; struct option builtin_rebase_options[] = { OPT_STRING(0, "onto", &options.onto_name, N_("revision"), N_("rebase onto given branch instead of upstream")), + OPT_BOOL(0, "keep-base", &keep_base, + N_("use the merge-base of upstream and branch as the current base")), OPT_BOOL(0, "no-verify", &ok_to_skip_pre_rebase, N_("allow pre-rebase hook to run")), OPT_NEGBIT('q', "quiet", &options.flags, N_("be quiet. implies --no-stat"), - REBASE_NO_QUIET| REBASE_VERBOSE | REBASE_DIFFSTAT), + REBASE_NO_QUIET | REBASE_VERBOSE | REBASE_DIFFSTAT), OPT_BIT('v', "verbose", &options.flags, N_("display a diffstat of what changed upstream"), REBASE_NO_QUIET | REBASE_VERBOSE | REBASE_DIFFSTAT), @@ -1407,16 +1325,17 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) PARSE_OPT_NOARG, NULL, REBASE_DIFFSTAT }, OPT_BOOL(0, "signoff", &options.signoff, N_("add a Signed-off-by: line to each commit")), - OPT_PASSTHRU_ARGV(0, "ignore-whitespace", &options.git_am_opts, - NULL, N_("passed to 'git am'"), - PARSE_OPT_NOARG), - OPT_PASSTHRU_ARGV(0, "committer-date-is-author-date", - &options.git_am_opts, NULL, - N_("passed to 'git am'"), PARSE_OPT_NOARG), - OPT_PASSTHRU_ARGV(0, "ignore-date", &options.git_am_opts, NULL, - N_("passed to 'git am'"), PARSE_OPT_NOARG), + OPT_BOOL(0, "committer-date-is-author-date", + &options.committer_date_is_author_date, + N_("make committer date match author date")), + OPT_BOOL(0, "reset-author-date", &options.ignore_date, + N_("ignore author date and use current date")), + OPT_HIDDEN_BOOL(0, "ignore-date", &options.ignore_date, + N_("synonym of --reset-author-date")), OPT_PASSTHRU_ARGV('C', NULL, &options.git_am_opts, N_("n"), N_("passed to 'git apply'"), 0), + OPT_BOOL(0, "ignore-whitespace", &ignore_whitespace, + N_("ignore changes in whitespace")), OPT_PASSTHRU_ARGV(0, "whitespace", &options.git_am_opts, N_("action"), N_("passed to 'git apply'"), 0), OPT_BIT('f', "force-rebase", &options.flags, @@ -1439,34 +1358,44 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) OPT_CMDMODE(0, "show-current-patch", &action, N_("show the patch file being applied or merged"), ACTION_SHOW_CURRENT_PATCH), - { OPTION_CALLBACK, 'm', "merge", &options, NULL, + OPT_CALLBACK_F(0, "apply", &options, NULL, + N_("use apply strategies to rebase"), + PARSE_OPT_NOARG | PARSE_OPT_NONEG, + parse_opt_am), + OPT_CALLBACK_F('m', "merge", &options, NULL, N_("use merging strategies to rebase"), PARSE_OPT_NOARG | PARSE_OPT_NONEG, - parse_opt_merge }, - { OPTION_CALLBACK, 'i', "interactive", &options, NULL, + parse_opt_merge), + OPT_CALLBACK_F('i', "interactive", &options, NULL, N_("let the user edit the list of commits to rebase"), PARSE_OPT_NOARG | PARSE_OPT_NONEG, - parse_opt_interactive }, - OPT_SET_INT('p', "preserve-merges", &options.type, - N_("(DEPRECATED) try to recreate merges instead of " - "ignoring them"), REBASE_PRESERVE_MERGES), + parse_opt_interactive), + OPT_SET_INT_F('p', "preserve-merges", &options.type, + N_("(DEPRECATED) try to recreate merges instead of " + "ignoring them"), + REBASE_PRESERVE_MERGES, PARSE_OPT_HIDDEN), OPT_RERERE_AUTOUPDATE(&options.allow_rerere_autoupdate), - OPT_BOOL('k', "keep-empty", &options.keep_empty, - N_("preserve empty commits during rebase")), + OPT_CALLBACK_F(0, "empty", &options, "{drop,keep,ask}", + N_("how to handle commits that become empty"), + PARSE_OPT_NONEG, parse_opt_empty), + OPT_CALLBACK_F('k', "keep-empty", &options, NULL, + N_("keep commits which start empty"), + PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, + parse_opt_keep_empty), OPT_BOOL(0, "autosquash", &options.autosquash, N_("move commits that begin with " "squash!/fixup! under -i")), { OPTION_STRING, 'S', "gpg-sign", &gpg_sign, N_("key-id"), N_("GPG-sign commits"), PARSE_OPT_OPTARG, NULL, (intptr_t) "" }, - OPT_BOOL(0, "autostash", &options.autostash, - N_("automatically stash/stash pop before and after")), + OPT_AUTOSTASH(&options.autostash), OPT_STRING_LIST('x', "exec", &exec, N_("exec"), N_("add exec lines after each commit of the " "editable list")), - OPT_BOOL(0, "allow-empty-message", - &options.allow_empty_message, - N_("allow rebasing commits with empty messages")), + OPT_BOOL_F(0, "allow-empty-message", + &options.allow_empty_message, + N_("allow rebasing commits with empty messages"), + PARSE_OPT_HIDDEN), {OPTION_STRING, 'r', "rebase-merges", &rebase_merges, N_("mode"), N_("try to rebase merges instead of skipping them"), @@ -1484,6 +1413,8 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) OPT_BOOL(0, "reschedule-failed-exec", &reschedule_failed_exec, N_("automatically re-schedule any `exec` that fails")), + OPT_BOOL(0, "reapply-cherry-picks", &options.reapply_cherry_picks, + N_("apply all changes, even those already present upstream")), OPT_END(), }; int i; @@ -1494,6 +1425,9 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) options.allow_empty_message = 1; git_config(rebase_config, &options); + /* options.gpg_sign_opt will be either "-S" or NULL */ + gpg_sign = options.gpg_sign_opt ? "" : NULL; + FREE_AND_NULL(options.gpg_sign_opt); if (options.use_legacy_rebase || !git_env_bool("GIT_TEST_REBASE_USE_BUILTIN", -1)) @@ -1506,7 +1440,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) die(_("It looks like 'git am' is in progress. Cannot rebase.")); if (is_directory(apply_dir())) { - options.type = REBASE_AM; + options.type = REBASE_APPLY; options.state_dir = apply_dir(); } else if (is_directory(merge_dir())) { strbuf_reset(&buf); @@ -1518,7 +1452,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) strbuf_reset(&buf); strbuf_addf(&buf, "%s/interactive", merge_dir()); if(file_exists(buf.buf)) { - options.type = REBASE_INTERACTIVE; + options.type = REBASE_MERGE; options.flags |= REBASE_INTERACTIVE_EXPLICIT; } else options.type = REBASE_MERGE; @@ -1547,16 +1481,26 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) warning(_("git rebase --preserve-merges is deprecated. " "Use --rebase-merges instead.")); + if (keep_base) { + if (options.onto_name) + die(_("cannot combine '--keep-base' with '--onto'")); + if (options.root) + die(_("cannot combine '--keep-base' with '--root'")); + } + + if (options.root && fork_point > 0) + die(_("cannot combine '--root' with '--fork-point'")); + if (action != ACTION_NONE && !in_progress) die(_("No rebase in progress?")); setenv(GIT_REFLOG_ACTION_ENVIRONMENT, "rebase", 0); - if (action == ACTION_EDIT_TODO && !is_interactive(&options)) + if (action == ACTION_EDIT_TODO && !is_merge(&options)) die(_("The --edit-todo action can only be used during " "interactive rebase.")); if (trace2_is_enabled()) { - if (is_interactive(&options)) + if (is_merge(&options)) trace2_cmd_mode("interactive"); else if (exec.nr) trace2_cmd_mode("interactive-exec"); @@ -1604,8 +1548,8 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) rerere_clear(the_repository, &merge_rr); string_list_clear(&merge_rr, 1); - if (reset_head(NULL, "reset", NULL, RESET_HEAD_HARD, - NULL, NULL) < 0) + if (reset_head(the_repository, NULL, "reset", NULL, RESET_HEAD_HARD, + NULL, NULL, DEFAULT_REFLOG_ACTION) < 0) die(_("could not discard worktree changes")); remove_branch_state(the_repository, 0); if (read_basic_state(&options)) @@ -1622,9 +1566,9 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) if (read_basic_state(&options)) exit(1); - if (reset_head(&options.orig_head, "reset", + if (reset_head(the_repository, &options.orig_head, "reset", options.head_name, RESET_HEAD_HARD, - NULL, NULL) < 0) + NULL, NULL, DEFAULT_REFLOG_ACTION) < 0) die(_("could not move back to %s"), oid_to_hex(&options.orig_head)); remove_branch_state(the_repository, 0); @@ -1632,7 +1576,8 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) goto cleanup; } case ACTION_QUIT: { - if (options.type == REBASE_INTERACTIVE) { + save_autostash(state_dir_path("autostash", &options)); + if (options.type == REBASE_MERGE) { struct replay_opts replay = REPLAY_OPTS_INIT; replay.action = REPLAY_INTERACTIVE_REBASE; @@ -1681,13 +1626,20 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) state_dir_base, cmd_live_rebase, buf.buf); } - for (i = 0; i < options.git_am_opts.argc; i++) { - const char *option = options.git_am_opts.argv[i], *p; - if (!strcmp(option, "--committer-date-is-author-date") || - !strcmp(option, "--ignore-date") || - !strcmp(option, "--whitespace=fix") || + if ((options.flags & REBASE_INTERACTIVE_EXPLICIT) || + (action != ACTION_NONE) || + (exec.nr > 0) || + options.autosquash) { + allow_preemptive_ff = 0; + } + if (options.committer_date_is_author_date || options.ignore_date) + options.flags |= REBASE_FORCE; + + for (i = 0; i < options.git_am_opts.nr; i++) { + const char *option = options.git_am_opts.v[i], *p; + if (!strcmp(option, "--whitespace=fix") || !strcmp(option, "--whitespace=strip")) - options.flags |= REBASE_FORCE; + allow_preemptive_ff = 0; else if (skip_prefix(option, "-C", &p)) { while (*p) if (!isdigit(*(p++))) @@ -1705,20 +1657,21 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) exit(1); if (!(options.flags & REBASE_NO_QUIET)) - argv_array_push(&options.git_am_opts, "-q"); + strvec_push(&options.git_am_opts, "-q"); + + if (options.empty != EMPTY_UNSPECIFIED) + imply_merge(&options, "--empty"); - if (options.keep_empty) - imply_interactive(&options, "--keep-empty"); + if (options.reapply_cherry_picks) + imply_merge(&options, "--reapply-cherry-picks"); - if (gpg_sign) { - free(options.gpg_sign_opt); + if (gpg_sign) options.gpg_sign_opt = xstrfmt("-S%s", gpg_sign); - } if (exec.nr) { int i; - imply_interactive(&options, "--exec"); + imply_merge(&options, "--exec"); strbuf_reset(&buf); for (i = 0; i < exec.nr; i++) @@ -1734,7 +1687,24 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) else if (strcmp("no-rebase-cousins", rebase_merges)) die(_("Unknown mode: %s"), rebase_merges); options.rebase_merges = 1; - imply_interactive(&options, "--rebase-merges"); + imply_merge(&options, "--rebase-merges"); + } + + if (options.type == REBASE_APPLY) { + if (ignore_whitespace) + strvec_push(&options.git_am_opts, + "--ignore-whitespace"); + if (options.committer_date_is_author_date) + strvec_push(&options.git_am_opts, + "--committer-date-is-author-date"); + if (options.ignore_date) + strvec_push(&options.git_am_opts, "--ignore-date"); + } else { + /* REBASE_MERGE and PRESERVE_MERGES */ + if (ignore_whitespace) { + string_list_append(&strategy_options, + "ignore-space-change"); + } } if (strategy_options.nr) { @@ -1753,10 +1723,9 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) if (options.strategy) { options.strategy = xstrdup(options.strategy); switch (options.type) { - case REBASE_AM: + case REBASE_APPLY: die(_("--strategy requires --merge or --interactive")); case REBASE_MERGE: - case REBASE_INTERACTIVE: case REBASE_PRESERVE_MERGES: /* compatible */ break; @@ -1769,52 +1738,70 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) } if (options.type == REBASE_MERGE) - imply_interactive(&options, "--merge"); + imply_merge(&options, "--merge"); if (options.root && !options.onto_name) - imply_interactive(&options, "--root without --onto"); + imply_merge(&options, "--root without --onto"); if (isatty(2) && options.flags & REBASE_NO_QUIET) strbuf_addstr(&options.git_format_patch_opt, " --progress"); + if (options.git_am_opts.nr || options.type == REBASE_APPLY) { + /* all am options except -q are compatible only with --apply */ + for (i = options.git_am_opts.nr - 1; i >= 0; i--) + if (strcmp(options.git_am_opts.v[i], "-q")) + break; + + if (i >= 0) { + if (is_merge(&options)) + die(_("cannot combine apply options with " + "merge options")); + else + options.type = REBASE_APPLY; + } + } + + if (options.type == REBASE_UNSPECIFIED) { + if (!strcmp(options.default_backend, "merge")) + imply_merge(&options, "--merge"); + else if (!strcmp(options.default_backend, "apply")) + options.type = REBASE_APPLY; + else + die(_("Unknown rebase backend: %s"), + options.default_backend); + } + switch (options.type) { case REBASE_MERGE: - case REBASE_INTERACTIVE: case REBASE_PRESERVE_MERGES: options.state_dir = merge_dir(); break; - case REBASE_AM: + case REBASE_APPLY: options.state_dir = apply_dir(); break; default: - /* the default rebase backend is `--am` */ - options.type = REBASE_AM; - options.state_dir = apply_dir(); - break; + BUG("options.type was just set above; should be unreachable."); } - if (reschedule_failed_exec > 0 && !is_interactive(&options)) + if (options.empty == EMPTY_UNSPECIFIED) { + if (options.flags & REBASE_INTERACTIVE_EXPLICIT) + options.empty = EMPTY_ASK; + else if (exec.nr > 0) + options.empty = EMPTY_KEEP; + else + options.empty = EMPTY_DROP; + } + if (reschedule_failed_exec > 0 && !is_merge(&options)) die(_("--reschedule-failed-exec requires " "--exec or --interactive")); if (reschedule_failed_exec >= 0) options.reschedule_failed_exec = reschedule_failed_exec; - if (options.git_am_opts.argc) { - /* all am options except -q are compatible only with --am */ - for (i = options.git_am_opts.argc - 1; i >= 0; i--) - if (strcmp(options.git_am_opts.argv[i], "-q")) - break; - - if (is_interactive(&options) && i >= 0) - die(_("cannot combine am options with either " - "interactive or merge options")); - } - if (options.signoff) { if (options.type == REBASE_PRESERVE_MERGES) die("cannot combine '--signoff' with " "'--preserve-merges'"); - argv_array_push(&options.git_am_opts, "--signoff"); + strvec_push(&options.git_am_opts, "--signoff"); options.flags |= REBASE_FORCE; } @@ -1833,15 +1820,6 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) "'--reschedule-failed-exec'")); } - if (options.rebase_merges) { - if (strategy_options.nr) - die(_("cannot combine '--rebase-merges' with " - "'--strategy-option'")); - if (options.strategy) - die(_("cannot combine '--rebase-merges' with " - "'--strategy'")); - } - if (!options.root) { if (argc < 1) { struct branch *branch; @@ -1872,7 +1850,9 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) options.squash_onto = &squash_onto; options.onto_name = squash_onto_name = xstrdup(oid_to_hex(&squash_onto)); - } + } else + options.root_with_onto = 1; + options.upstream_name = NULL; options.upstream = NULL; if (argc > 1) @@ -1882,12 +1862,22 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) } /* Make sure the branch to rebase onto is valid. */ - if (!options.onto_name) + if (keep_base) { + strbuf_reset(&buf); + strbuf_addstr(&buf, options.upstream_name); + strbuf_addstr(&buf, "..."); + options.onto_name = xstrdup(buf.buf); + } else if (!options.onto_name) options.onto_name = options.upstream_name; if (strstr(options.onto_name, "...")) { - if (get_oid_mb(options.onto_name, &merge_base) < 0) - die(_("'%s': need exactly one merge base"), - options.onto_name); + if (get_oid_mb(options.onto_name, &merge_base) < 0) { + if (keep_base) + die(_("'%s': need exactly one merge base with branch"), + options.upstream_name); + else + die(_("'%s': need exactly one merge base"), + options.onto_name); + } options.onto = lookup_commit_or_die(&merge_base, options.onto_name); } else { @@ -1912,10 +1902,11 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) /* Is it a local branch? */ strbuf_reset(&buf); strbuf_addf(&buf, "refs/heads/%s", branch_name); - if (!read_ref(buf.buf, &options.orig_head)) + if (!read_ref(buf.buf, &options.orig_head)) { + die_if_checked_out(buf.buf, 1); options.head_name = xstrdup(buf.buf); /* If not is it a valid ref (branch or commit)? */ - else if (!get_oid(branch_name, &options.orig_head)) + } else if (!get_oid(branch_name, &options.orig_head)) options.head_name = NULL; else die(_("fatal: no such branch/commit '%s'"), @@ -1953,60 +1944,8 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) die(_("could not read index")); if (options.autostash) { - struct lock_file lock_file = LOCK_INIT; - int fd; - - fd = hold_locked_index(&lock_file, 0); - refresh_cache(REFRESH_QUIET); - if (0 <= fd) - repo_update_index_if_able(the_repository, &lock_file); - rollback_lock_file(&lock_file); - - if (has_unstaged_changes(the_repository, 1) || - has_uncommitted_changes(the_repository, 1)) { - const char *autostash = - state_dir_path("autostash", &options); - struct child_process stash = CHILD_PROCESS_INIT; - struct object_id oid; - struct commit *head = - lookup_commit_reference(the_repository, - &options.orig_head); - - argv_array_pushl(&stash.args, - "stash", "create", "autostash", NULL); - stash.git_cmd = 1; - stash.no_stdin = 1; - strbuf_reset(&buf); - if (capture_command(&stash, &buf, GIT_MAX_HEXSZ)) - die(_("Cannot autostash")); - strbuf_trim_trailing_newline(&buf); - if (get_oid(buf.buf, &oid)) - die(_("Unexpected stash response: '%s'"), - buf.buf); - strbuf_reset(&buf); - strbuf_add_unique_abbrev(&buf, &oid, DEFAULT_ABBREV); - - if (safe_create_leading_directories_const(autostash)) - die(_("Could not create directory for '%s'"), - options.state_dir); - write_file(autostash, "%s", oid_to_hex(&oid)); - printf(_("Created autostash: %s\n"), buf.buf); - if (reset_head(&head->object.oid, "reset --hard", - NULL, RESET_HEAD_HARD, NULL, NULL) < 0) - die(_("could not reset --hard")); - printf(_("HEAD is now at %s"), - find_unique_abbrev(&head->object.oid, - DEFAULT_ABBREV)); - strbuf_reset(&buf); - pp_commit_easy(CMIT_FMT_ONELINE, head, &buf); - if (buf.len > 0) - printf(" %s", buf.buf); - putchar('\n'); - - if (discard_index(the_repository->index) < 0 || - repo_read_index(the_repository) < 0) - die(_("could not read index")); - } + create_autostash(the_repository, state_dir_path("autostash", &options), + DEFAULT_REFLOG_ACTION); } if (require_clean_work_tree(the_repository, "rebase", @@ -2022,34 +1961,30 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) /* * Check if we are already based on onto with linear history, - * but this should be done only when upstream and onto are the same - * and if this is not an interactive rebase. + * in which case we could fast-forward without replacing the commits + * with new commits recreated by replaying their changes. + * + * Note that can_fast_forward() initializes merge_base, so we have to + * call it before checking allow_preemptive_ff. */ - if (can_fast_forward(options.onto, &options.orig_head, &merge_base) && - !is_interactive(&options) && !options.restrict_revision && - options.upstream && - !oidcmp(&options.upstream->object.oid, &options.onto->object.oid)) { + if (can_fast_forward(options.onto, options.upstream, options.restrict_revision, + &options.orig_head, &merge_base) && + allow_preemptive_ff) { int flag; if (!(options.flags & REBASE_FORCE)) { /* Lazily switch to the target branch if needed... */ if (options.switch_to) { - struct object_id oid; - - if (get_oid(options.switch_to, &oid) < 0) { - ret = !!error(_("could not parse '%s'"), - options.switch_to); - goto cleanup; - } - strbuf_reset(&buf); strbuf_addf(&buf, "%s: checkout %s", getenv(GIT_REFLOG_ACTION_ENVIRONMENT), options.switch_to); - if (reset_head(&oid, "checkout", + if (reset_head(the_repository, + &options.orig_head, "checkout", options.head_name, RESET_HEAD_RUN_POST_CHECKOUT_HOOK, - NULL, buf.buf) < 0) { + NULL, buf.buf, + DEFAULT_REFLOG_ACTION) < 0) { ret = !!error(_("could not switch to " "%s"), options.switch_to); @@ -2111,7 +2046,7 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) diff_flush(&opts); } - if (is_interactive(&options)) + if (is_merge(&options)) goto run_rebase; /* Detach HEAD and reset the tree */ @@ -2121,10 +2056,10 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) strbuf_addf(&msg, "%s: checkout %s", getenv(GIT_REFLOG_ACTION_ENVIRONMENT), options.onto_name); - if (reset_head(&options.onto->object.oid, "checkout", NULL, + if (reset_head(the_repository, &options.onto->object.oid, "checkout", NULL, RESET_HEAD_DETACH | RESET_ORIG_HEAD | RESET_HEAD_RUN_POST_CHECKOUT_HOOK, - NULL, msg.buf)) + NULL, msg.buf, DEFAULT_REFLOG_ACTION)) die(_("Could not detach HEAD")); strbuf_release(&msg); @@ -2139,8 +2074,9 @@ int cmd_rebase(int argc, const char **argv, const char *prefix) strbuf_addf(&msg, "rebase finished: %s onto %s", options.head_name ? options.head_name : "detached HEAD", oid_to_hex(&options.onto->object.oid)); - reset_head(NULL, "Fast-forwarded", options.head_name, - RESET_HEAD_REFS_ONLY, "HEAD", msg.buf); + reset_head(the_repository, NULL, "Fast-forwarded", options.head_name, + RESET_HEAD_REFS_ONLY, "HEAD", msg.buf, + DEFAULT_REFLOG_ACTION); strbuf_release(&msg); ret = !!finish_rebase(&options); goto cleanup; |