| /* |
| * "git rebase" builtin command |
| * |
| * Copyright (c) 2018 Pratik Karki |
| */ |
| |
| #define USE_THE_INDEX_COMPATIBILITY_MACROS |
| #include "builtin.h" |
| #include "run-command.h" |
| #include "exec-cmd.h" |
| #include "argv-array.h" |
| #include "dir.h" |
| #include "packfile.h" |
| #include "refs.h" |
| #include "quote.h" |
| #include "config.h" |
| #include "cache-tree.h" |
| #include "unpack-trees.h" |
| #include "lockfile.h" |
| #include "parse-options.h" |
| #include "commit.h" |
| #include "diff.h" |
| #include "wt-status.h" |
| #include "revision.h" |
| #include "commit-reach.h" |
| #include "rerere.h" |
| #include "branch.h" |
| #include "sequencer.h" |
| #include "rebase-interactive.h" |
| |
| static char const * const builtin_rebase_usage[] = { |
| 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"), |
| NULL |
| }; |
| |
| static GIT_PATH_FUNC(path_squash_onto, "rebase-merge/squash-onto") |
| static GIT_PATH_FUNC(path_interactive, "rebase-merge/interactive") |
| static GIT_PATH_FUNC(apply_dir, "rebase-apply") |
| static GIT_PATH_FUNC(merge_dir, "rebase-merge") |
| |
| enum rebase_type { |
| REBASE_UNSPECIFIED = -1, |
| REBASE_APPLY, |
| REBASE_MERGE, |
| 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; |
| const char *upstream_arg; |
| char *head_name; |
| struct object_id orig_head; |
| struct commit *onto; |
| const char *onto_name; |
| const char *revisions; |
| const char *switch_to; |
| int root, root_with_onto; |
| struct object_id *squash_onto; |
| struct commit *restrict_revision; |
| int dont_finish_rebase; |
| enum { |
| REBASE_NO_QUIET = 1<<0, |
| REBASE_VERBOSE = 1<<1, |
| REBASE_DIFFSTAT = 1<<2, |
| REBASE_FORCE = 1<<3, |
| REBASE_INTERACTIVE_EXPLICIT = 1<<4, |
| } flags; |
| struct argv_array git_am_opts; |
| const char *action; |
| int signoff; |
| int allow_rerere_autoupdate; |
| int autosquash; |
| char *gpg_sign_opt; |
| int autostash; |
| char *cmd; |
| int allow_empty_message; |
| int rebase_merges, rebase_cousins; |
| char *strategy, *strategy_opts; |
| struct strbuf git_format_patch_opt; |
| int reschedule_failed_exec; |
| int use_legacy_rebase; |
| }; |
| |
| #define REBASE_OPTIONS_INIT { \ |
| .type = REBASE_UNSPECIFIED, \ |
| .empty = EMPTY_UNSPECIFIED, \ |
| .default_backend = "merge", \ |
| .flags = REBASE_NO_QUIET, \ |
| .git_am_opts = ARGV_ARRAY_INIT, \ |
| .git_format_patch_opt = STRBUF_INIT \ |
| } |
| |
| static struct replay_opts get_replay_opts(const struct rebase_options *opts) |
| { |
| struct replay_opts replay = REPLAY_OPTS_INIT; |
| |
| replay.action = REPLAY_INTERACTIVE_REBASE; |
| sequencer_init_config(&replay); |
| |
| replay.signoff = opts->signoff; |
| replay.allow_ff = !(opts->flags & REBASE_FORCE); |
| if (opts->allow_rerere_autoupdate) |
| 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.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; |
| } |
| |
| enum action { |
| ACTION_NONE = 0, |
| ACTION_CONTINUE, |
| ACTION_SKIP, |
| ACTION_ABORT, |
| ACTION_QUIT, |
| ACTION_EDIT_TODO, |
| ACTION_SHOW_CURRENT_PATCH, |
| ACTION_SHORTEN_OIDS, |
| ACTION_EXPAND_OIDS, |
| ACTION_CHECK_TODO_LIST, |
| ACTION_REARRANGE_SQUASH, |
| ACTION_ADD_EXEC |
| }; |
| |
| static const char *action_names[] = { "undefined", |
| "continue", |
| "skip", |
| "abort", |
| "quit", |
| "edit_todo", |
| "show_current_patch" }; |
| |
| static int add_exec_commands(struct string_list *commands) |
| { |
| const char *todo_file = rebase_path_todo(); |
| struct todo_list todo_list = TODO_LIST_INIT; |
| int res; |
| |
| if (strbuf_read_file(&todo_list.buf, todo_file, 0) < 0) |
| return error_errno(_("could not read '%s'."), todo_file); |
| |
| if (todo_list_parse_insn_buffer(the_repository, todo_list.buf.buf, |
| &todo_list)) { |
| todo_list_release(&todo_list); |
| return error(_("unusable todo list: '%s'"), todo_file); |
| } |
| |
| todo_list_add_exec_commands(&todo_list, commands); |
| res = todo_list_write_to_file(the_repository, &todo_list, |
| todo_file, NULL, NULL, -1, 0); |
| todo_list_release(&todo_list); |
| |
| if (res) |
| return error_errno(_("could not write '%s'."), todo_file); |
| return 0; |
| } |
| |
| static int rearrange_squash_in_todo_file(void) |
| { |
| const char *todo_file = rebase_path_todo(); |
| struct todo_list todo_list = TODO_LIST_INIT; |
| int res = 0; |
| |
| if (strbuf_read_file(&todo_list.buf, todo_file, 0) < 0) |
| return error_errno(_("could not read '%s'."), todo_file); |
| if (todo_list_parse_insn_buffer(the_repository, todo_list.buf.buf, |
| &todo_list)) { |
| todo_list_release(&todo_list); |
| return error(_("unusable todo list: '%s'"), todo_file); |
| } |
| |
| res = todo_list_rearrange_squash(&todo_list); |
| if (!res) |
| res = todo_list_write_to_file(the_repository, &todo_list, |
| todo_file, NULL, NULL, -1, 0); |
| |
| todo_list_release(&todo_list); |
| |
| if (res) |
| return error_errno(_("could not write '%s'."), todo_file); |
| return 0; |
| } |
| |
| static int transform_todo_file(unsigned flags) |
| { |
| const char *todo_file = rebase_path_todo(); |
| struct todo_list todo_list = TODO_LIST_INIT; |
| int res; |
| |
| if (strbuf_read_file(&todo_list.buf, todo_file, 0) < 0) |
| return error_errno(_("could not read '%s'."), todo_file); |
| |
| if (todo_list_parse_insn_buffer(the_repository, todo_list.buf.buf, |
| &todo_list)) { |
| todo_list_release(&todo_list); |
| return error(_("unusable todo list: '%s'"), todo_file); |
| } |
| |
| res = todo_list_write_to_file(the_repository, &todo_list, todo_file, |
| NULL, NULL, -1, flags); |
| todo_list_release(&todo_list); |
| |
| if (res) |
| return error_errno(_("could not write '%s'."), todo_file); |
| return 0; |
| } |
| |
| static int edit_todo_file(unsigned flags) |
| { |
| const char *todo_file = rebase_path_todo(); |
| struct todo_list todo_list = TODO_LIST_INIT, |
| new_todo = TODO_LIST_INIT; |
| int res = 0; |
| |
| if (strbuf_read_file(&todo_list.buf, todo_file, 0) < 0) |
| return error_errno(_("could not read '%s'."), todo_file); |
| |
| strbuf_stripspace(&todo_list.buf, 1); |
| res = edit_todo_list(the_repository, &todo_list, &new_todo, NULL, NULL, flags); |
| if (!res && todo_list_write_to_file(the_repository, &new_todo, todo_file, |
| NULL, NULL, -1, flags & ~(TODO_LIST_SHORTEN_IDS))) |
| res = error_errno(_("could not write '%s'"), todo_file); |
| |
| todo_list_release(&todo_list); |
| todo_list_release(&new_todo); |
| |
| return res; |
| } |
| |
| static int get_revision_ranges(struct commit *upstream, struct commit *onto, |
| struct object_id *orig_head, const char **head_hash, |
| char **revisions, char **shortrevisions) |
| { |
| struct commit *base_rev = upstream ? upstream : onto; |
| const char *shorthead; |
| |
| *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); |
| |
| if (upstream) { |
| const char *shortrev; |
| |
| shortrev = find_unique_abbrev(&base_rev->object.oid, |
| DEFAULT_ABBREV); |
| |
| *shortrevisions = xstrfmt("%s..%s", shortrev, shorthead); |
| } else |
| *shortrevisions = xstrdup(shorthead); |
| |
| return 0; |
| } |
| |
| static int init_basic_state(struct replay_opts *opts, const char *head_name, |
| struct commit *onto, const char *orig_head) |
| { |
| FILE *interactive; |
| |
| if (!is_directory(merge_dir()) && mkdir_in_gitdir(merge_dir())) |
| return error_errno(_("could not create temporary %s"), merge_dir()); |
| |
| delete_reflog("REBASE_HEAD"); |
| |
| interactive = fopen(path_interactive(), "w"); |
| if (!interactive) |
| return error_errno(_("could not mark as interactive")); |
| fclose(interactive); |
| |
| return write_basic_state(opts, head_name, onto, orig_head); |
| } |
| |
| static void split_exec_commands(const char *cmd, struct string_list *commands) |
| { |
| if (cmd && *cmd) { |
| string_list_split(commands, cmd, '\n', -1); |
| |
| /* rebase.c adds a new line to cmd after every command, |
| * so here the last command is always empty */ |
| string_list_remove_empty_items(commands, 0); |
| } |
| } |
| |
| 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 todo_list todo_list = TODO_LIST_INIT; |
| struct replay_opts replay = get_replay_opts(opts); |
| struct string_list commands = STRING_LIST_INIT_DUP; |
| |
| if (get_revision_ranges(opts->upstream, opts->onto, &opts->orig_head, |
| &head_hash, &revisions, &shortrevisions)) |
| return -1; |
| |
| if (init_basic_state(&replay, |
| opts->head_name ? opts->head_name : "detached HEAD", |
| opts->onto, head_hash)) { |
| free(revisions); |
| free(shortrevisions); |
| |
| return -1; |
| } |
| |
| if (!opts->upstream && opts->squash_onto) |
| write_file(path_squash_onto(), "%s\n", |
| oid_to_hex(opts->squash_onto)); |
| |
| argv_array_pushl(&make_script_args, "", revisions, NULL); |
| if (opts->restrict_revision) |
| argv_array_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, |
| flags); |
| |
| if (ret) |
| error(_("could not generate todo list")); |
| else { |
| discard_cache(); |
| if (todo_list_parse_insn_buffer(the_repository, todo_list.buf.buf, |
| &todo_list)) |
| BUG("unusable todo list"); |
| |
| split_exec_commands(opts->cmd, &commands); |
| ret = complete_action(the_repository, &replay, flags, |
| shortrevisions, opts->onto_name, opts->onto, head_hash, |
| &commands, opts->autosquash, &todo_list); |
| } |
| |
| string_list_clear(&commands, 0); |
| free(revisions); |
| free(shortrevisions); |
| todo_list_release(&todo_list); |
| argv_array_clear(&make_script_args); |
| |
| return ret; |
| } |
| |
| static int run_sequencer_rebase(struct rebase_options *opts, |
| enum action command) |
| { |
| unsigned flags = 0; |
| int abbreviate_commands = 0, ret = 0; |
| |
| git_config_get_bool("rebase.abbreviatecommands", &abbreviate_commands); |
| |
| 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; |
| |
| switch (command) { |
| case ACTION_NONE: { |
| if (!opts->onto && !opts->upstream) |
| die(_("a base commit must be provided with --upstream or --onto")); |
| |
| ret = do_interactive_rebase(opts, flags); |
| break; |
| } |
| case ACTION_SKIP: { |
| struct string_list merge_rr = STRING_LIST_INIT_DUP; |
| |
| rerere_clear(the_repository, &merge_rr); |
| } |
| /* fallthrough */ |
| case ACTION_CONTINUE: { |
| struct replay_opts replay_opts = get_replay_opts(opts); |
| |
| ret = sequencer_continue(the_repository, &replay_opts); |
| break; |
| } |
| case ACTION_EDIT_TODO: |
| ret = edit_todo_file(flags); |
| break; |
| case ACTION_SHOW_CURRENT_PATCH: { |
| struct child_process cmd = CHILD_PROCESS_INIT; |
| |
| cmd.git_cmd = 1; |
| argv_array_pushl(&cmd.args, "show", "REBASE_HEAD", "--", NULL); |
| ret = run_command(&cmd); |
| |
| break; |
| } |
| case ACTION_SHORTEN_OIDS: |
| case ACTION_EXPAND_OIDS: |
| ret = transform_todo_file(flags); |
| break; |
| case ACTION_CHECK_TODO_LIST: |
| ret = check_todo_list_from_file(the_repository); |
| break; |
| case ACTION_REARRANGE_SQUASH: |
| ret = rearrange_squash_in_todo_file(); |
| break; |
| case ACTION_ADD_EXEC: { |
| struct string_list commands = STRING_LIST_INIT_DUP; |
| |
| split_exec_commands(opts->cmd, &commands); |
| ret = add_exec_commands(&commands); |
| string_list_clear(&commands, 0); |
| break; |
| } |
| default: |
| BUG("invalid command '%d'", command); |
| } |
| |
| return ret; |
| } |
| |
| 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); |
| |
| /* |
| * If we ever want to remap --keep-empty to --empty=keep, insert: |
| * opts->empty = unset ? EMPTY_UNSPECIFIED : EMPTY_KEEP; |
| */ |
| opts->type = REBASE_MERGE; |
| return 0; |
| } |
| |
| static const char * const builtin_rebase_interactive_usage[] = { |
| N_("git rebase--interactive [<options>]"), |
| NULL |
| }; |
| |
| int cmd_rebase__interactive(int argc, const char **argv, const char *prefix) |
| { |
| struct rebase_options opts = REBASE_OPTIONS_INIT; |
| struct object_id squash_onto = null_oid; |
| enum action command = ACTION_NONE; |
| struct option options[] = { |
| OPT_NEGBIT(0, "ff", &opts.flags, N_("allow fast-forward"), |
| REBASE_FORCE), |
| { OPTION_CALLBACK, 'k', "keep-empty", &options, NULL, |
| N_("(DEPRECATED) keep empty commits"), |
| 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")), |
| OPT_BOOL(0, "autosquash", &opts.autosquash, |
| N_("move commits that begin with squash!/fixup!")), |
| OPT_BOOL(0, "signoff", &opts.signoff, N_("sign commits")), |
| OPT_BIT('v', "verbose", &opts.flags, |
| N_("display a diffstat of what changed upstream"), |
| REBASE_NO_QUIET | REBASE_VERBOSE | REBASE_DIFFSTAT), |
| OPT_CMDMODE(0, "continue", &command, N_("continue rebase"), |
| ACTION_CONTINUE), |
| OPT_CMDMODE(0, "skip", &command, N_("skip commit"), ACTION_SKIP), |
| OPT_CMDMODE(0, "edit-todo", &command, N_("edit the todo list"), |
| ACTION_EDIT_TODO), |
| OPT_CMDMODE(0, "show-current-patch", &command, N_("show the current patch"), |
| ACTION_SHOW_CURRENT_PATCH), |
| OPT_CMDMODE(0, "shorten-ids", &command, |
| N_("shorten commit ids in the todo list"), ACTION_SHORTEN_OIDS), |
| OPT_CMDMODE(0, "expand-ids", &command, |
| N_("expand commit ids in the todo list"), ACTION_EXPAND_OIDS), |
| OPT_CMDMODE(0, "check-todo-list", &command, |
| N_("check the todo list"), ACTION_CHECK_TODO_LIST), |
| OPT_CMDMODE(0, "rearrange-squash", &command, |
| N_("rearrange fixup/squash lines"), ACTION_REARRANGE_SQUASH), |
| OPT_CMDMODE(0, "add-exec-commands", &command, |
| N_("insert exec commands in todo list"), ACTION_ADD_EXEC), |
| { OPTION_CALLBACK, 0, "onto", &opts.onto, N_("onto"), N_("onto"), |
| PARSE_OPT_NONEG, parse_opt_commit, 0 }, |
| { OPTION_CALLBACK, 0, "restrict-revision", &opts.restrict_revision, |
| N_("restrict-revision"), N_("restrict revision"), |
| PARSE_OPT_NONEG, parse_opt_commit, 0 }, |
| { OPTION_CALLBACK, 0, "squash-onto", &squash_onto, N_("squash-onto"), |
| N_("squash onto"), PARSE_OPT_NONEG, parse_opt_object_id, 0 }, |
| { OPTION_CALLBACK, 0, "upstream", &opts.upstream, N_("upstream"), |
| N_("the upstream commit"), PARSE_OPT_NONEG, parse_opt_commit, |
| 0 }, |
| OPT_STRING(0, "head-name", &opts.head_name, N_("head-name"), N_("head name")), |
| { OPTION_STRING, 'S', "gpg-sign", &opts.gpg_sign_opt, N_("key-id"), |
| N_("GPG-sign commits"), |
| PARSE_OPT_OPTARG, NULL, (intptr_t) "" }, |
| OPT_STRING(0, "strategy", &opts.strategy, N_("strategy"), |
| N_("rebase strategy")), |
| OPT_STRING(0, "strategy-opts", &opts.strategy_opts, N_("strategy-opts"), |
| N_("strategy options")), |
| OPT_STRING(0, "switch-to", &opts.switch_to, N_("switch-to"), |
| N_("the branch or commit to checkout")), |
| OPT_STRING(0, "onto-name", &opts.onto_name, N_("onto-name"), N_("onto name")), |
| OPT_STRING(0, "cmd", &opts.cmd, N_("cmd"), N_("the command to run")), |
| OPT_RERERE_AUTOUPDATE(&opts.allow_rerere_autoupdate), |
| OPT_BOOL(0, "reschedule-failed-exec", &opts.reschedule_failed_exec, |
| N_("automatically re-schedule any `exec` that fails")), |
| OPT_END() |
| }; |
| |
| opts.rebase_cousins = -1; |
| |
| if (argc == 1) |
| usage_with_options(builtin_rebase_interactive_usage, options); |
| |
| argc = parse_options(argc, argv, prefix, options, |
| builtin_rebase_interactive_usage, PARSE_OPT_KEEP_ARGV0); |
| |
| if (!is_null_oid(&squash_onto)) |
| opts.squash_onto = &squash_onto; |
| |
| if (opts.rebase_cousins >= 0 && !opts.rebase_merges) |
| warning(_("--[no-]rebase-cousins has no effect without " |
| "--rebase-merges")); |
| |
| return !!run_sequencer_rebase(&opts, command); |
| } |
| |
| static int is_merge(struct rebase_options *opts) |
| { |
| return opts->type == REBASE_MERGE || |
| opts->type == REBASE_PRESERVE_MERGES; |
| } |
| |
| static void imply_merge(struct rebase_options *opts, const char *option) |
| { |
| switch (opts->type) { |
| case REBASE_APPLY: |
| die(_("%s requires an interactive rebase"), option); |
| break; |
| case REBASE_MERGE: |
| case REBASE_PRESERVE_MERGES: |
| break; |
| default: |
| opts->type = REBASE_MERGE; /* implied */ |
| break; |
| } |
| } |
| |
| /* Returns the filename prefixed by the state_dir */ |
| static const char *state_dir_path(const char *filename, struct rebase_options *opts) |
| { |
| static struct strbuf path = STRBUF_INIT; |
| static size_t prefix_len; |
| |
| if (!prefix_len) { |
| strbuf_addf(&path, "%s/", opts->state_dir); |
| prefix_len = path.len; |
| } |
| |
| strbuf_setlen(&path, prefix_len); |
| strbuf_addstr(&path, filename); |
| 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) |
| { |
| struct strbuf head_name = STRBUF_INIT; |
| 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)) |
| return -1; |
| opts->head_name = starts_with(head_name.buf, "refs/") ? |
| xstrdup(head_name.buf) : NULL; |
| strbuf_release(&head_name); |
| if (get_oid(buf.buf, &oid)) |
| return error(_("could not get 'onto': '%s'"), buf.buf); |
| opts->onto = lookup_commit_or_die(&oid, buf.buf); |
| |
| /* |
| * We always write to orig-head, but interactive rebase used to write to |
| * head. Fall back to reading from head to cover for the case that the |
| * user upgraded git with an ongoing interactive rebase. |
| */ |
| strbuf_reset(&buf); |
| if (file_exists(state_dir_path("orig-head", opts))) { |
| if (read_one(state_dir_path("orig-head", opts), &buf)) |
| return -1; |
| } else if (read_one(state_dir_path("head", opts), &buf)) |
| return -1; |
| if (get_oid(buf.buf, &opts->orig_head)) |
| return error(_("invalid orig-head: '%s'"), buf.buf); |
| |
| if (file_exists(state_dir_path("quiet", opts))) |
| opts->flags &= ~REBASE_NO_QUIET; |
| else |
| opts->flags |= REBASE_NO_QUIET; |
| |
| if (file_exists(state_dir_path("verbose", opts))) |
| opts->flags |= REBASE_VERBOSE; |
| |
| if (file_exists(state_dir_path("signoff", opts))) { |
| opts->signoff = 1; |
| opts->flags |= REBASE_FORCE; |
| } |
| |
| if (file_exists(state_dir_path("allow_rerere_autoupdate", opts))) { |
| strbuf_reset(&buf); |
| if (read_one(state_dir_path("allow_rerere_autoupdate", opts), |
| &buf)) |
| return -1; |
| if (!strcmp(buf.buf, "--rerere-autoupdate")) |
| opts->allow_rerere_autoupdate = RERERE_AUTOUPDATE; |
| else if (!strcmp(buf.buf, "--no-rerere-autoupdate")) |
| opts->allow_rerere_autoupdate = RERERE_NOAUTOUPDATE; |
| else |
| warning(_("ignoring invalid allow_rerere_autoupdate: " |
| "'%s'"), buf.buf); |
| } |
| |
| if (file_exists(state_dir_path("gpg_sign_opt", opts))) { |
| strbuf_reset(&buf); |
| if (read_one(state_dir_path("gpg_sign_opt", opts), |
| &buf)) |
| return -1; |
| free(opts->gpg_sign_opt); |
| opts->gpg_sign_opt = xstrdup(buf.buf); |
| } |
| |
| if (file_exists(state_dir_path("strategy", opts))) { |
| strbuf_reset(&buf); |
| if (read_one(state_dir_path("strategy", opts), &buf)) |
| return -1; |
| free(opts->strategy); |
| opts->strategy = xstrdup(buf.buf); |
| } |
| |
| if (file_exists(state_dir_path("strategy_opts", opts))) { |
| strbuf_reset(&buf); |
| if (read_one(state_dir_path("strategy_opts", opts), &buf)) |
| return -1; |
| free(opts->strategy_opts); |
| opts->strategy_opts = xstrdup(buf.buf); |
| } |
| |
| strbuf_release(&buf); |
| |
| return 0; |
| } |
| |
| static int rebase_write_basic_state(struct rebase_options *opts) |
| { |
| write_file(state_dir_path("head-name", opts), "%s", |
| opts->head_name ? opts->head_name : "detached HEAD"); |
| write_file(state_dir_path("onto", opts), "%s", |
| opts->onto ? oid_to_hex(&opts->onto->object.oid) : ""); |
| write_file(state_dir_path("orig-head", opts), "%s", |
| oid_to_hex(&opts->orig_head)); |
| 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) |
| write_file(state_dir_path("strategy", opts), "%s", |
| opts->strategy); |
| if (opts->strategy_opts) |
| write_file(state_dir_path("strategy_opts", opts), "%s", |
| opts->strategy_opts); |
| if (opts->allow_rerere_autoupdate > 0) |
| write_file(state_dir_path("allow_rerere_autoupdate", opts), |
| "-%s-rerere-autoupdate", |
| opts->allow_rerere_autoupdate == RERERE_AUTOUPDATE ? |
| "" : "-no"); |
| if (opts->gpg_sign_opt) |
| write_file(state_dir_path("gpg_sign_opt", opts), "%s", |
| opts->gpg_sign_opt); |
| if (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); |
| close_object_store(the_repository->objects); |
| /* |
| * We ignore errors in 'gc --auto', since the |
| * user should see them. |
| */ |
| run_command_v_opt(argv_gc_auto, RUN_GIT_CMD); |
| if (opts->type == REBASE_MERGE) { |
| struct replay_opts replay = REPLAY_OPTS_INIT; |
| |
| replay.action = REPLAY_INTERACTIVE_REBASE; |
| ret = sequencer_remove_state(&replay); |
| } else { |
| strbuf_addstr(&dir, opts->state_dir); |
| if (remove_dir_recursively(&dir, 0)) |
| ret = error(_("could not remove '%s'"), |
| opts->state_dir); |
| strbuf_release(&dir); |
| } |
| |
| return ret; |
| } |
| |
| static struct commit *peel_committish(const char *name) |
| { |
| struct object *obj; |
| struct object_id oid; |
| |
| if (get_oid(name, &oid)) |
| return NULL; |
| obj = parse_object(the_repository, &oid); |
| return (struct commit *)peel_to_type(name, 0, obj, OBJ_COMMIT); |
| } |
| |
| static void add_var(struct strbuf *buf, const char *name, const char *value) |
| { |
| if (!value) |
| strbuf_addf(buf, "unset %s; ", name); |
| else { |
| strbuf_addf(buf, "%s=", name); |
| sq_quote_buf(buf, value); |
| strbuf_addstr(buf, "; "); |
| } |
| } |
| |
| #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; |
| int ret; |
| |
| if (!opts->head_name) |
| return 0; /* nothing to move back to */ |
| |
| if (!opts->onto) |
| BUG("move_to_original_branch without onto"); |
| |
| strbuf_addf(&orig_head_reflog, "rebase finished: %s onto %s", |
| 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); |
| |
| strbuf_release(&orig_head_reflog); |
| strbuf_release(&head_reflog); |
| return ret; |
| } |
| |
| static const char *resolvemsg = |
| N_("Resolve all conflicts manually, mark them as resolved with\n" |
| "\"git add/rm <conflicted_files>\", then run \"git rebase --continue\".\n" |
| "You can instead skip this commit: run \"git rebase --skip\".\n" |
| "To abort and get back to the state before \"git rebase\", run " |
| "\"git rebase --abort\"."); |
| |
| static int run_am(struct rebase_options *opts) |
| { |
| struct child_process am = CHILD_PROCESS_INIT; |
| struct child_process format_patch = CHILD_PROCESS_INIT; |
| struct strbuf revisions = STRBUF_INIT; |
| int status; |
| char *rebased_patches; |
| |
| am.git_cmd = 1; |
| argv_array_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); |
| if (opts->gpg_sign_opt) |
| argv_array_push(&am.args, opts->gpg_sign_opt); |
| status = run_command(&am); |
| if (status) |
| return status; |
| |
| 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); |
| status = run_command(&am); |
| if (status) |
| return status; |
| |
| return move_to_original_branch(opts); |
| } |
| if (opts->action && !strcmp("show-current-patch", opts->action)) { |
| argv_array_push(&am.args, "--show-current-patch"); |
| return run_command(&am); |
| } |
| |
| strbuf_addf(&revisions, "%s...%s", |
| oid_to_hex(opts->root ? |
| /* this is now equivalent to !opts->upstream */ |
| &opts->onto->object.oid : |
| &opts->upstream->object.oid), |
| oid_to_hex(&opts->orig_head)); |
| |
| rebased_patches = xstrdup(git_path("rebased-patches")); |
| format_patch.out = open(rebased_patches, |
| O_WRONLY | O_CREAT | O_TRUNC, 0666); |
| if (format_patch.out < 0) { |
| status = error_errno(_("could not open '%s' for writing"), |
| rebased_patches); |
| free(rebased_patches); |
| argv_array_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", |
| "--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); |
| if (opts->restrict_revision) |
| argv_array_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); |
| |
| reset_head(&opts->orig_head, "checkout", opts->head_name, 0, |
| "HEAD", NULL); |
| error(_("\ngit encountered an error while preparing the " |
| "patches to replay\n" |
| "these revisions:\n" |
| "\n %s\n\n" |
| "As a result, git cannot rebase them."), |
| opts->revisions); |
| |
| strbuf_release(&revisions); |
| return status; |
| } |
| strbuf_release(&revisions); |
| |
| am.in = open(rebased_patches, O_RDONLY); |
| if (am.in < 0) { |
| status = error_errno(_("could not open '%s' for reading"), |
| rebased_patches); |
| free(rebased_patches); |
| argv_array_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"); |
| if (opts->allow_rerere_autoupdate == RERERE_AUTOUPDATE) |
| argv_array_push(&am.args, "--rerere-autoupdate"); |
| else if (opts->allow_rerere_autoupdate == RERERE_NOAUTOUPDATE) |
| argv_array_push(&am.args, "--no-rerere-autoupdate"); |
| if (opts->gpg_sign_opt) |
| argv_array_push(&am.args, opts->gpg_sign_opt); |
| status = run_command(&am); |
| unlink(rebased_patches); |
| free(rebased_patches); |
| |
| if (!status) { |
| return move_to_original_branch(opts); |
| } |
| |
| if (is_directory(opts->state_dir)) |
| rebase_write_basic_state(opts); |
| |
| return status; |
| } |
| |
| static int run_specific_rebase(struct rebase_options *opts, enum action action) |
| { |
| const char *argv[] = { NULL, NULL }; |
| struct strbuf script_snippet = STRBUF_INIT, buf = STRBUF_INIT; |
| int status; |
| const char *backend, *backend_func; |
| |
| 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); |
| opts->autosquash = 0; |
| } |
| if (opts->gpg_sign_opt) { |
| /* remove the leading "-S" */ |
| char *tmp = xstrdup(opts->gpg_sign_opt + 2); |
| free(opts->gpg_sign_opt); |
| opts->gpg_sign_opt = tmp; |
| } |
| |
| status = run_sequencer_rebase(opts, action); |
| goto finished_rebase; |
| } |
| |
| if (opts->type == REBASE_APPLY) { |
| status = run_am(opts); |
| goto finished_rebase; |
| } |
| |
| add_var(&script_snippet, "GIT_DIR", absolute_path(get_git_dir())); |
| add_var(&script_snippet, "state_dir", opts->state_dir); |
| |
| add_var(&script_snippet, "upstream_name", opts->upstream_name); |
| add_var(&script_snippet, "upstream", opts->upstream ? |
| oid_to_hex(&opts->upstream->object.oid) : NULL); |
| add_var(&script_snippet, "head_name", |
| opts->head_name ? opts->head_name : "detached HEAD"); |
| add_var(&script_snippet, "orig_head", oid_to_hex(&opts->orig_head)); |
| add_var(&script_snippet, "onto", opts->onto ? |
| oid_to_hex(&opts->onto->object.oid) : NULL); |
| add_var(&script_snippet, "onto_name", opts->onto_name); |
| 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); |
| sq_quote_argv_pretty(&buf, opts->git_am_opts.argv); |
| add_var(&script_snippet, "git_am_opt", buf.buf); |
| strbuf_release(&buf); |
| add_var(&script_snippet, "verbose", |
| opts->flags & REBASE_VERBOSE ? "t" : ""); |
| add_var(&script_snippet, "diffstat", |
| opts->flags & REBASE_DIFFSTAT ? "t" : ""); |
| add_var(&script_snippet, "force_rebase", |
| opts->flags & REBASE_FORCE ? "t" : ""); |
| if (opts->switch_to) |
| add_var(&script_snippet, "switch_to", opts->switch_to); |
| add_var(&script_snippet, "action", opts->action ? opts->action : ""); |
| add_var(&script_snippet, "signoff", opts->signoff ? "--signoff" : ""); |
| add_var(&script_snippet, "allow_rerere_autoupdate", |
| opts->allow_rerere_autoupdate ? |
| opts->allow_rerere_autoupdate == RERERE_AUTOUPDATE ? |
| "--rerere-autoupdate" : "--no-rerere-autoupdate" : ""); |
| add_var(&script_snippet, "autosquash", opts->autosquash ? "t" : ""); |
| add_var(&script_snippet, "gpg_sign_opt", opts->gpg_sign_opt); |
| add_var(&script_snippet, "cmd", opts->cmd); |
| add_var(&script_snippet, "allow_empty_message", |
| opts->allow_empty_message ? "--allow-empty-message" : ""); |
| add_var(&script_snippet, "rebase_merges", |
| opts->rebase_merges ? "t" : ""); |
| add_var(&script_snippet, "rebase_cousins", |
| opts->rebase_cousins ? "t" : ""); |
| add_var(&script_snippet, "strategy", opts->strategy); |
| add_var(&script_snippet, "strategy_opts", opts->strategy_opts); |
| add_var(&script_snippet, "rebase_root", opts->root ? "t" : ""); |
| add_var(&script_snippet, "squash_onto", |
| opts->squash_onto ? oid_to_hex(opts->squash_onto) : ""); |
| add_var(&script_snippet, "git_format_patch_opt", |
| opts->git_format_patch_opt.buf); |
| |
| if (is_merge(opts) && |
| !(opts->flags & REBASE_INTERACTIVE_EXPLICIT)) { |
| strbuf_addstr(&script_snippet, |
| "GIT_SEQUENCE_EDITOR=:; export GIT_SEQUENCE_EDITOR; "); |
| opts->autosquash = 0; |
| } |
| |
| switch (opts->type) { |
| case REBASE_PRESERVE_MERGES: |
| backend = "git-rebase--preserve-merges"; |
| backend_func = "git_rebase__preserve_merges"; |
| break; |
| default: |
| BUG("Unhandled rebase type %d", opts->type); |
| break; |
| } |
| |
| strbuf_addf(&script_snippet, |
| ". git-sh-setup && . %s && %s", backend, backend_func); |
| argv[0] = script_snippet.buf; |
| |
| status = run_command_v_opt(argv, RUN_USING_SHELL); |
| finished_rebase: |
| if (opts->dont_finish_rebase) |
| ; /* do nothing */ |
| 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); |
| strbuf_addstr(&dir, opts->state_dir); |
| remove_dir_recursively(&dir, 0); |
| strbuf_release(&dir); |
| die("Nothing to do"); |
| } |
| |
| strbuf_release(&script_snippet); |
| |
| return status ? -1 : 0; |
| } |
| |
| static int rebase_config(const char *var, const char *value, void *data) |
| { |
| struct rebase_options *opts = data; |
| |
| if (!strcmp(var, "rebase.stat")) { |
| if (git_config_bool(var, value)) |
| opts->flags |= REBASE_DIFFSTAT; |
| else |
| opts->flags &= ~REBASE_DIFFSTAT; |
| return 0; |
| } |
| |
| if (!strcmp(var, "rebase.autosquash")) { |
| opts->autosquash = git_config_bool(var, value); |
| return 0; |
| } |
| |
| if (!strcmp(var, "commit.gpgsign")) { |
| free(opts->gpg_sign_opt); |
| opts->gpg_sign_opt = git_config_bool(var, value) ? |
| xstrdup("-S") : NULL; |
| return 0; |
| } |
| |
| if (!strcmp(var, "rebase.autostash")) { |
| opts->autostash = git_config_bool(var, value); |
| return 0; |
| } |
| |
| if (!strcmp(var, "rebase.reschedulefailedexec")) { |
| opts->reschedule_failed_exec = git_config_bool(var, value); |
| return 0; |
| } |
| |
| if (!strcmp(var, "rebase.usebuiltin")) { |
| opts->use_legacy_rebase = !git_config_bool(var, value); |
| return 0; |
| } |
| |
| if (!strcmp(var, "rebase.backend")) { |
| return git_config_string(&opts->default_backend, var, value); |
| } |
| |
| return git_default_config(var, value, data); |
| } |
| |
| /* |
| * Determines whether the commits in from..to are linear, i.e. contain |
| * no merge commits. This function *expects* `from` to be an ancestor of |
| * `to`. |
| */ |
| static int is_linear_history(struct commit *from, struct commit *to) |
| { |
| while (to && to != from) { |
| parse_commit(to); |
| if (!to->parents) |
| return 1; |
| if (to->parents->next) |
| return 0; |
| to = to->parents->item; |
| } |
| return 1; |
| } |
| |
| 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 = NULL; |
| int res = 0; |
| |
| if (!head) |
| goto done; |
| |
| merge_bases = get_merge_bases(onto, head); |
| if (!merge_bases || merge_bases->next) { |
| oidcpy(merge_base, &null_oid); |
| 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) |
| { |
| struct rebase_options *opts = opt->value; |
| |
| BUG_ON_OPT_NEG(unset); |
| BUG_ON_OPT_ARG(arg); |
| |
| if (!is_merge(opts)) |
| opts->type = REBASE_MERGE; |
| |
| return 0; |
| } |
| |
| /* -i followed by -p is still explicitly interactive, but -p alone is not */ |
| static int parse_opt_interactive(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_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); |
| |
| printf(_("%s\n" |
| "Please specify which branch you want to rebase against.\n" |
| "See git-rebase(1) for details.\n" |
| "\n" |
| " git rebase '<branch>'\n" |
| "\n"), |
| current_branch ? _("There is no tracking information for " |
| "the current branch.") : |
| _("You are not currently on a branch.")); |
| |
| if (current_branch) { |
| const char *remote = current_branch->remote_name; |
| |
| if (!remote) |
| remote = _("<remote>"); |
| |
| printf(_("If you wish to set tracking information for this " |
| "branch you can do so with:\n" |
| "\n" |
| " git branch --set-upstream-to=%s/<branch> %s\n" |
| "\n"), |
| remote, current_branch->name); |
| } |
| exit(1); |
| } |
| |
| static void set_reflog_action(struct rebase_options *options) |
| { |
| const char *env; |
| struct strbuf buf = STRBUF_INIT; |
| |
| 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 (%s)", options->action); |
| setenv(GIT_REFLOG_ACTION_ENVIRONMENT, buf.buf, 1); |
| strbuf_release(&buf); |
| } |
| |
| static int check_exec_cmd(const char *cmd) |
| { |
| if (strchr(cmd, '\n')) |
| return error(_("exec commands cannot contain newlines")); |
| |
| /* Does the command consist purely of whitespace? */ |
| if (!cmd[strspn(cmd, " \t\r\f\v")]) |
| return error(_("empty exec command")); |
| |
| 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; |
| enum action action = ACTION_NONE; |
| const char *gpg_sign = NULL; |
| struct string_list exec = STRING_LIST_INIT_NODUP; |
| const char *rebase_merges = NULL; |
| int fork_point = -1; |
| struct string_list strategy_options = STRING_LIST_INIT_NODUP; |
| 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), |
| OPT_BIT('v', "verbose", &options.flags, |
| N_("display a diffstat of what changed upstream"), |
| REBASE_NO_QUIET | REBASE_VERBOSE | REBASE_DIFFSTAT), |
| {OPTION_NEGBIT, 'n', "no-stat", &options.flags, NULL, |
| N_("do not show diffstat of what changed upstream"), |
| 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_PASSTHRU_ARGV('C', NULL, &options.git_am_opts, N_("n"), |
| N_("passed to 'git apply'"), 0), |
| OPT_PASSTHRU_ARGV(0, "whitespace", &options.git_am_opts, |
| N_("action"), N_("passed to 'git apply'"), 0), |
| OPT_BIT('f', "force-rebase", &options.flags, |
| N_("cherry-pick all commits, even if unchanged"), |
| REBASE_FORCE), |
| OPT_BIT(0, "no-ff", &options.flags, |
| N_("cherry-pick all commits, even if unchanged"), |
| REBASE_FORCE), |
| OPT_CMDMODE(0, "continue", &action, N_("continue"), |
| ACTION_CONTINUE), |
| OPT_CMDMODE(0, "skip", &action, |
| N_("skip current patch and continue"), ACTION_SKIP), |
| OPT_CMDMODE(0, "abort", &action, |
| N_("abort and check out the original branch"), |
| ACTION_ABORT), |
| OPT_CMDMODE(0, "quit", &action, |
| N_("abort but keep HEAD where it is"), ACTION_QUIT), |
| OPT_CMDMODE(0, "edit-todo", &action, N_("edit the todo list " |
| "during an interactive rebase"), ACTION_EDIT_TODO), |
| OPT_CMDMODE(0, "show-current-patch", &action, |
| N_("show the patch file being applied or merged"), |
| ACTION_SHOW_CURRENT_PATCH), |
| { OPTION_CALLBACK, 0, "apply", &options, NULL, |
| N_("use apply strategies to rebase"), |
| PARSE_OPT_NOARG | PARSE_OPT_NONEG, |
| parse_opt_am }, |
| { OPTION_CALLBACK, '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, |
| N_("let the user edit the list of commits to rebase"), |
| PARSE_OPT_NOARG | PARSE_OPT_NONEG, |
| 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_CALLBACK_F(0, "empty", &options, "{drop,keep,ask}", |
| N_("how to handle commits that become empty"), |
| PARSE_OPT_NONEG, parse_opt_empty), |
| { OPTION_CALLBACK, 'k', "keep-empty", &options, NULL, |
| N_("(DEPRECATED) keep empty commits"), |
| 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_STRING_LIST('x', "exec", &exec, N_("exec"), |
| N_("add exec lines after each commit of the " |
| "editable list")), |
| 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"), |
| PARSE_OPT_OPTARG, NULL, (intptr_t)""}, |
| OPT_BOOL(0, "fork-point", &fork_point, |
| N_("use 'merge-base --fork-point' to refine upstream")), |
| OPT_STRING('s', "strategy", &options.strategy, |
| N_("strategy"), N_("use the given merge strategy")), |
| OPT_STRING_LIST('X', "strategy-option", &strategy_options, |
| N_("option"), |
| N_("pass the argument through to the merge " |
| "strategy")), |
| OPT_BOOL(0, "root", &options.root, |
| N_("rebase all reachable commits up to the root(s)")), |
| OPT_BOOL(0, "reschedule-failed-exec", |
| &reschedule_failed_exec, |
| N_("automatically re-schedule any `exec` that fails")), |
| OPT_END(), |
| }; |
| int i; |
| |
| if (argc == 2 && !strcmp(argv[1], "-h")) |
| usage_with_options(builtin_rebase_usage, |
| builtin_rebase_options); |
| |
| options.allow_empty_message = 1; |
| git_config(rebase_config, &options); |
| |
| if (options.use_legacy_rebase || |
| !git_env_bool("GIT_TEST_REBASE_USE_BUILTIN", -1)) |
| warning(_("the rebase.useBuiltin support has been removed!\n" |
| "See its entry in 'git help config' for details.")); |
| |
| strbuf_reset(&buf); |
| strbuf_addf(&buf, "%s/applying", apply_dir()); |
| if(file_exists(buf.buf)) |
| die(_("It looks like 'git am' is in progress. Cannot rebase.")); |
| |
| if (is_directory(apply_dir())) { |
| options.type = REBASE_APPLY; |
| options.state_dir = apply_dir(); |
| } else if (is_directory(merge_dir())) { |
| strbuf_reset(&buf); |
| strbuf_addf(&buf, "%s/rewritten", merge_dir()); |
| if (is_directory(buf.buf)) { |
| options.type = REBASE_PRESERVE_MERGES; |
| options.flags |= REBASE_INTERACTIVE_EXPLICIT; |
| } else { |
| strbuf_reset(&buf); |
| strbuf_addf(&buf, "%s/interactive", merge_dir()); |
| if(file_exists(buf.buf)) { |
| options.type = REBASE_MERGE; |
| options.flags |= REBASE_INTERACTIVE_EXPLICIT; |
| } else |
| options.type = REBASE_MERGE; |
| } |
| options.state_dir = merge_dir(); |
| } |
| |
| if (options.type != REBASE_UNSPECIFIED) |
| in_progress = 1; |
| |
| total_argc = argc; |
| argc = parse_options(argc, argv, prefix, |
| builtin_rebase_options, |
| builtin_rebase_usage, 0); |
| |
| if (action != ACTION_NONE && total_argc != 2) { |
| usage_with_options(builtin_rebase_usage, |
| builtin_rebase_options); |
| } |
| |
| if (argc > 2) |
| usage_with_options(builtin_rebase_usage, |
| builtin_rebase_options); |
| |
| if (options.type == REBASE_PRESERVE_MERGES) |
| 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 (action != ACTION_NONE && !in_progress) |
| die(_("No rebase in progress?")); |
| setenv(GIT_REFLOG_ACTION_ENVIRONMENT, "rebase", 0); |
| |
| 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_merge(&options)) |
| trace2_cmd_mode("interactive"); |
| else if (exec.nr) |
| trace2_cmd_mode("interactive-exec"); |
| else |
| trace2_cmd_mode(action_names[action]); |
| } |
| |
| switch (action) { |
| case ACTION_CONTINUE: { |
| struct object_id head; |
| struct lock_file lock_file = LOCK_INIT; |
| int fd; |
| |
| options.action = "continue"; |
| set_reflog_action(&options); |
| |
| /* Sanity check */ |
| if (get_oid("HEAD", &head)) |
| die(_("Cannot read HEAD")); |
| |
| fd = hold_locked_index(&lock_file, 0); |
| if (repo_read_index(the_repository) < 0) |
| die(_("could not read index")); |
| refresh_index(the_repository->index, REFRESH_QUIET, NULL, NULL, |
| NULL); |
| if (0 <= fd) |
| repo_update_index_if_able(the_repository, &lock_file); |
| rollback_lock_file(&lock_file); |
| |
| if (has_unstaged_changes(the_repository, 1)) { |
| puts(_("You must edit all merge conflicts and then\n" |
| "mark them as resolved using git add")); |
| exit(1); |
| } |
| if (read_basic_state(&options)) |
| exit(1); |
| goto run_rebase; |
| } |
| case ACTION_SKIP: { |
| struct string_list merge_rr = STRING_LIST_INIT_DUP; |
| |
| options.action = "skip"; |
| set_reflog_action(&options); |
| |
| rerere_clear(the_repository, &merge_rr); |
| string_list_clear(&merge_rr, 1); |
| |
| if (reset_head(NULL, "reset", NULL, RESET_HEAD_HARD, |
| NULL, NULL) < 0) |
| die(_("could not discard worktree changes")); |
| remove_branch_state(the_repository, 0); |
| if (read_basic_state(&options)) |
| exit(1); |
| goto run_rebase; |
| } |
| case ACTION_ABORT: { |
| struct string_list merge_rr = STRING_LIST_INIT_DUP; |
| options.action = "abort"; |
| set_reflog_action(&options); |
| |
| rerere_clear(the_repository, &merge_rr); |
| string_list_clear(&merge_rr, 1); |
| |
| if (read_basic_state(&options)) |
| exit(1); |
| if (reset_head(&options.orig_head, "reset", |
| options.head_name, RESET_HEAD_HARD, |
| NULL, NULL) < 0) |
| die(_("could not move back to %s"), |
| oid_to_hex(&options.orig_head)); |
| remove_branch_state(the_repository, 0); |
| ret = !!finish_rebase(&options); |
| goto cleanup; |
| } |
| case ACTION_QUIT: { |
| if (options.type == REBASE_MERGE) { |
| struct replay_opts replay = REPLAY_OPTS_INIT; |
| |
| replay.action = REPLAY_INTERACTIVE_REBASE; |
| ret = !!sequencer_remove_state(&replay); |
| } else { |
| strbuf_reset(&buf); |
| strbuf_addstr(&buf, options.state_dir); |
| ret = !!remove_dir_recursively(&buf, 0); |
| if (ret) |
| error(_("could not remove '%s'"), |
| options.state_dir); |
| } |
| goto cleanup; |
| } |
| case ACTION_EDIT_TODO: |
| options.action = "edit-todo"; |
| options.dont_finish_rebase = 1; |
| goto run_rebase; |
| case ACTION_SHOW_CURRENT_PATCH: |
| options.action = "show-current-patch"; |
| options.dont_finish_rebase = 1; |
| goto run_rebase; |
| case ACTION_NONE: |
| break; |
| default: |
| BUG("action: %d", action); |
| } |
| |
| /* Make sure no rebase is in progress */ |
| if (in_progress) { |
| const char *last_slash = strrchr(options.state_dir, '/'); |
| const char *state_dir_base = |
| last_slash ? last_slash + 1 : options.state_dir; |
| const char *cmd_live_rebase = |
| "git rebase (--continue | --abort | --skip)"; |
| strbuf_reset(&buf); |
| strbuf_addf(&buf, "rm -fr \"%s\"", options.state_dir); |
| die(_("It seems that there is already a %s directory, and\n" |
| "I wonder if you are in the middle of another rebase. " |
| "If that is the\n" |
| "case, please try\n\t%s\n" |
| "If that is not the case, please\n\t%s\n" |
| "and run me again. I am stopping in case you still " |
| "have something\n" |
| "valuable there.\n"), |
| state_dir_base, cmd_live_rebase, buf.buf); |
| } |
| |
| if ((options.flags & REBASE_INTERACTIVE_EXPLICIT) || |
| (action != ACTION_NONE) || |
| (exec.nr > 0) || |
| options.autosquash) { |
| allow_preemptive_ff = 0; |
| } |
| |
| 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") || |
| !strcmp(option, "--whitespace=strip")) |
| allow_preemptive_ff = 0; |
| else if (skip_prefix(option, "-C", &p)) { |
| while (*p) |
| if (!isdigit(*(p++))) |
| die(_("switch `C' expects a " |
| "numerical value")); |
| } else if (skip_prefix(option, "--whitespace=", &p)) { |
| if (*p && strcmp(p, "warn") && strcmp(p, "nowarn") && |
| strcmp(p, "error") && strcmp(p, "error-all")) |
| die("Invalid whitespace option: '%s'", p); |
| } |
| } |
| |
| for (i = 0; i < exec.nr; i++) |
| if (check_exec_cmd(exec.items[i].string)) |
| exit(1); |
| |
| if (!(options.flags & REBASE_NO_QUIET)) |
| argv_array_push(&options.git_am_opts, "-q"); |
| |
| if (options.empty != EMPTY_UNSPECIFIED) |
| imply_merge(&options, "--empty"); |
| |
| if (gpg_sign) { |
| free(options.gpg_sign_opt); |
| options.gpg_sign_opt = xstrfmt("-S%s", gpg_sign); |
| } |
| |
| if (exec.nr) { |
| int i; |
| |
| imply_merge(&options, "--exec"); |
| |
| strbuf_reset(&buf); |
| for (i = 0; i < exec.nr; i++) |
| strbuf_addf(&buf, "exec %s\n", exec.items[i].string); |
| options.cmd = xstrdup(buf.buf); |
| } |
| |
| if (rebase_merges) { |
| if (!*rebase_merges) |
| ; /* default mode; do nothing */ |
| else if (!strcmp("rebase-cousins", rebase_merges)) |
| options.rebase_cousins = 1; |
| else if (strcmp("no-rebase-cousins", rebase_merges)) |
| die(_("Unknown mode: %s"), rebase_merges); |
| options.rebase_merges = 1; |
| imply_merge(&options, "--rebase-merges"); |
| } |
| |
| if (strategy_options.nr) { |
| int i; |
| |
| if (!options.strategy) |
| options.strategy = "recursive"; |
| |
| strbuf_reset(&buf); |
| for (i = 0; i < strategy_options.nr; i++) |
| strbuf_addf(&buf, " --%s", |
| strategy_options.items[i].string); |
| options.strategy_opts = xstrdup(buf.buf); |
| } |
| |
| if (options.strategy) { |
| options.strategy = xstrdup(options.strategy); |
| switch (options.type) { |
| case REBASE_APPLY: |
| die(_("--strategy requires --merge or --interactive")); |
| case REBASE_MERGE: |
| case REBASE_PRESERVE_MERGES: |
| /* compatible */ |
| break; |
| case REBASE_UNSPECIFIED: |
| options.type = REBASE_MERGE; |
| break; |
| default: |
| BUG("unhandled rebase type (%d)", options.type); |
| } |
| } |
| |
| if (options.type == REBASE_MERGE) |
| imply_merge(&options, "--merge"); |
| |
| if (options.root && !options.onto_name) |
| 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.argc || options.type == REBASE_APPLY) { |
| /* all am options except -q are compatible only with --apply */ |
| for (i = options.git_am_opts.argc - 1; i >= 0; i--) |
| if (strcmp(options.git_am_opts.argv[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_PRESERVE_MERGES: |
| options.state_dir = merge_dir(); |
| break; |
| case REBASE_APPLY: |
| options.state_dir = apply_dir(); |
| break; |
| default: |
| BUG("options.type was just set above; should be unreachable."); |
| } |
| |
| 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.signoff) { |
| if (options.type == REBASE_PRESERVE_MERGES) |
| die("cannot combine '--signoff' with " |
| "'--preserve-merges'"); |
| argv_array_push(&options.git_am_opts, "--signoff"); |
| options.flags |= REBASE_FORCE; |
| } |
| |
| if (options.type == REBASE_PRESERVE_MERGES) { |
| /* |
| * Note: incompatibility with --signoff handled in signoff block above |
| * Note: incompatibility with --interactive is just a strong warning; |
| * git-rebase.txt caveats with "unless you know what you are doing" |
| */ |
| if (options.rebase_merges) |
| die(_("cannot combine '--preserve-merges' with " |
| "'--rebase-merges'")); |
| |
| if (options.reschedule_failed_exec) |
| die(_("error: cannot combine '--preserve-merges' with " |
| "'--reschedule-failed-exec'")); |
| } |
| |
| if (!options.root) { |
| if (argc < 1) { |
| struct branch *branch; |
| |
| branch = branch_get(NULL); |
| options.upstream_name = branch_get_upstream(branch, |
| NULL); |
| if (!options.upstream_name) |
| error_on_missing_default_upstream(); |
| if (fork_point < 0) |
| fork_point = 1; |
| } else { |
| options.upstream_name = argv[0]; |
| argc--; |
| argv++; |
| if (!strcmp(options.upstream_name, "-")) |
| options.upstream_name = "@{-1}"; |
| } |
| options.upstream = peel_committish(options.upstream_name); |
| if (!options.upstream) |
| die(_("invalid upstream '%s'"), options.upstream_name); |
| options.upstream_arg = options.upstream_name; |
| } else { |
| if (!options.onto_name) { |
| if (commit_tree("", 0, the_hash_algo->empty_tree, NULL, |
| &squash_onto, NULL, NULL) < 0) |
| die(_("Could not create new root commit")); |
| 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) |
| usage_with_options(builtin_rebase_usage, |
| builtin_rebase_options); |
| options.upstream_arg = "--root"; |
| } |
| |
| /* Make sure the branch to rebase onto is valid. */ |
| 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) { |
| 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 { |
| options.onto = peel_committish(options.onto_name); |
| if (!options.onto) |
| die(_("Does not point to a valid commit '%s'"), |
| options.onto_name); |
| } |
| |
| /* |
| * If the branch to rebase is given, that is the branch we will rebase |
| * branch_name -- branch/commit being rebased, or |
| * HEAD (already detached) |
| * orig_head -- commit object name of tip of the branch before rebasing |
| * head_name -- refs/heads/<that-branch> or NULL (detached HEAD) |
| */ |
| if (argc == 1) { |
| /* Is it "rebase other branchname" or "rebase other commit"? */ |
| branch_name = argv[0]; |
| options.switch_to = argv[0]; |
| |
| /* Is it a local branch? */ |
| strbuf_reset(&buf); |
| strbuf_addf(&buf, "refs/heads/%s", branch_name); |
| 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)) |
| options.head_name = NULL; |
| else |
| die(_("fatal: no such branch/commit '%s'"), |
| branch_name); |
| } else if (argc == 0) { |
| /* Do not need to switch branches, we are already on it. */ |
| options.head_name = |
| xstrdup_or_null(resolve_ref_unsafe("HEAD", 0, NULL, |
| &flags)); |
| if (!options.head_name) |
| die(_("No such ref: %s"), "HEAD"); |
| if (flags & REF_ISSYMREF) { |
| if (!skip_prefix(options.head_name, |
| "refs/heads/", &branch_name)) |
| branch_name = options.head_name; |
| |
| } else { |
| FREE_AND_NULL(options.head_name); |
| branch_name = "HEAD"; |
| } |
| if (get_oid("HEAD", &options.orig_head)) |
| die(_("Could not resolve HEAD to a revision")); |
| } else |
| BUG("unexpected number of arguments left to parse"); |
| |
| if (fork_point > 0) { |
| struct commit *head = |
| lookup_commit_reference(the_repository, |
| &options.orig_head); |
| options.restrict_revision = |
| get_fork_point(options.upstream_name, head); |
| } |
| |
| if (repo_read_index(the_repository) < 0) |
| 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; |
| |
| 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(NULL, "reset --hard", |
| NULL, RESET_HEAD_HARD, NULL, NULL) < 0) |
| die(_("could not reset --hard")); |
| |
| if (discard_index(the_repository->index) < 0 || |
| repo_read_index(the_repository) < 0) |
| die(_("could not read index")); |
| } |
| } |
| |
| if (require_clean_work_tree(the_repository, "rebase", |
| _("Please commit or stash them."), 1, 1)) { |
| ret = 1; |
| goto cleanup; |
| } |
| |
| /* |
| * Now we are rebasing commits upstream..orig_head (or with --root, |
| * everything leading up to orig_head) on top of onto. |
| */ |
| |
| /* |
| * Check if we are already based on onto with linear history, |
| * 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.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) { |
| strbuf_reset(&buf); |
| strbuf_addf(&buf, "%s: checkout %s", |
| getenv(GIT_REFLOG_ACTION_ENVIRONMENT), |
| options.switch_to); |
| if (reset_head(&options.orig_head, "checkout", |
| options.head_name, |
| RESET_HEAD_RUN_POST_CHECKOUT_HOOK, |
| NULL, buf.buf) < 0) { |
| ret = !!error(_("could not switch to " |
| "%s"), |
| options.switch_to); |
| goto cleanup; |
| } |
| } |
| |
| if (!(options.flags & REBASE_NO_QUIET)) |
| ; /* be quiet */ |
| else if (!strcmp(branch_name, "HEAD") && |
| resolve_ref_unsafe("HEAD", 0, NULL, &flag)) |
| puts(_("HEAD is up to date.")); |
| else |
| printf(_("Current branch %s is up to date.\n"), |
| branch_name); |
| ret = !!finish_rebase(&options); |
| goto cleanup; |
| } else if (!(options.flags & REBASE_NO_QUIET)) |
| ; /* be quiet */ |
| else if (!strcmp(branch_name, "HEAD") && |
| resolve_ref_unsafe("HEAD", 0, NULL, &flag)) |
| puts(_("HEAD is up to date, rebase forced.")); |
| else |
| printf(_("Current branch %s is up to date, rebase " |
| "forced.\n"), branch_name); |
| } |
| |
| /* If a hook exists, give it a chance to interrupt*/ |
| if (!ok_to_skip_pre_rebase && |
| run_hook_le(NULL, "pre-rebase", options.upstream_arg, |
| argc ? argv[0] : NULL, NULL)) |
| die(_("The pre-rebase hook refused to rebase.")); |
| |
| if (options.flags & REBASE_DIFFSTAT) { |
| struct diff_options opts; |
| |
| if (options.flags & REBASE_VERBOSE) { |
| if (is_null_oid(&merge_base)) |
| printf(_("Changes to %s:\n"), |
| oid_to_hex(&options.onto->object.oid)); |
| else |
| printf(_("Changes from %s to %s:\n"), |
| oid_to_hex(&merge_base), |
| oid_to_hex(&options.onto->object.oid)); |
| } |
| |
| /* We want color (if set), but no pager */ |
| diff_setup(&opts); |
| opts.stat_width = -1; /* use full terminal width */ |
| opts.stat_graph_width = -1; /* respect statGraphWidth config */ |
| opts.output_format |= |
| DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT; |
| opts.detect_rename = DIFF_DETECT_RENAME; |
| diff_setup_done(&opts); |
| diff_tree_oid(is_null_oid(&merge_base) ? |
| the_hash_algo->empty_tree : &merge_base, |
| &options.onto->object.oid, "", &opts); |
| diffcore_std(&opts); |
| diff_flush(&opts); |
| } |
| |
| if (is_merge(&options)) |
| goto run_rebase; |
| |
| /* Detach HEAD and reset the tree */ |
| if (options.flags & REBASE_NO_QUIET) |
| printf(_("First, rewinding head to replay your work on top of " |
| "it...\n")); |
| |
| strbuf_addf(&msg, "%s: checkout %s", |
| getenv(GIT_REFLOG_ACTION_ENVIRONMENT), options.onto_name); |
| if (reset_head(&options.onto->object.oid, "checkout", NULL, |
| RESET_HEAD_DETACH | RESET_ORIG_HEAD | |
| RESET_HEAD_RUN_POST_CHECKOUT_HOOK, |
| NULL, msg.buf)) |
| die(_("Could not detach HEAD")); |
| strbuf_release(&msg); |
| |
| /* |
| * If the onto is a proper descendant of the tip of the branch, then |
| * we just fast-forwarded. |
| */ |
| strbuf_reset(&msg); |
| if (oideq(&merge_base, &options.orig_head)) { |
| printf(_("Fast-forwarded %s to %s.\n"), |
| branch_name, options.onto_name); |
| 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); |
| strbuf_release(&msg); |
| ret = !!finish_rebase(&options); |
| goto cleanup; |
| } |
| |
| strbuf_addf(&revisions, "%s..%s", |
| options.root ? oid_to_hex(&options.onto->object.oid) : |
| (options.restrict_revision ? |
| oid_to_hex(&options.restrict_revision->object.oid) : |
| oid_to_hex(&options.upstream->object.oid)), |
| oid_to_hex(&options.orig_head)); |
| |
| options.revisions = revisions.buf; |
| |
| run_rebase: |
| ret = !!run_specific_rebase(&options, action); |
| |
| cleanup: |
| strbuf_release(&buf); |
| strbuf_release(&revisions); |
| free(options.head_name); |
| free(options.gpg_sign_opt); |
| free(options.cmd); |
| free(squash_onto_name); |
| return ret; |
| } |