diff options
Diffstat (limited to 'third_party/git/builtin/rebase.c')
| -rw-r--r-- | third_party/git/builtin/rebase.c | 2105 |
1 files changed, 0 insertions, 2105 deletions
diff --git a/third_party/git/builtin/rebase.c b/third_party/git/builtin/rebase.c deleted file mode 100644 index eeca53382f79..000000000000 --- a/third_party/git/builtin/rebase.c +++ /dev/null @@ -1,2105 +0,0 @@ -/* - * "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 "strvec.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" -#include "reset.h" - -#define DEFAULT_REFLOG_ACTION "rebase" - -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 strvec git_am_opts; - const char *action; - int signoff; - int allow_rerere_autoupdate; - int keep_empty; - 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; - char *strategy, *strategy_opts; - 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 = STRVEC_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.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; -} - -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 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 (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)); - - strvec_pushl(&make_script_args, "", revisions, NULL); - if (opts->restrict_revision) - 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.nr, make_script_args.v, - 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); - strvec_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 |= opts->keep_empty ? TODO_LIST_KEEP_EMPTY : 0; - 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: { - 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; - strvec_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 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 -}; - -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), - 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")), - 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 the merge backend"), 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; -} - -/* 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_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; - 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_oneliner(&buf, state_dir_path("orig-head", opts), - READ_ONELINER_WARN_MISSING)) - return -1; - } 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); - - 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_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; - 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_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); - } - - if (file_exists(state_dir_path("strategy", opts))) { - strbuf_reset(&buf); - if (!read_oneliner(&buf, state_dir_path("strategy", opts), - READ_ONELINER_WARN_MISSING)) - return -1; - free(opts->strategy); - opts->strategy = xstrdup(buf.buf); - } - - if (file_exists(state_dir_path("strategy_opts", opts))) { - strbuf_reset(&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); - } - - 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 finish_rebase(struct rebase_options *opts) -{ - struct strbuf dir = STRBUF_INIT; - int ret = 0; - - delete_ref(NULL, "REBASE_HEAD", NULL, REF_NO_DEREF); - apply_autostash(state_dir_path("autostash", opts)); - close_object_store(the_repository->objects); - /* - * We ignore errors in 'git maintenance run --auto', since the - * user should see them. - */ - 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; - 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, "; "); - } -} - -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(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); - 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; - strvec_push(&am.args, "am"); - - if (opts->action && !strcmp("continue", opts->action)) { - strvec_push(&am.args, "--resolved"); - strvec_pushf(&am.args, "--resolvemsg=%s", resolvemsg); - if (opts->gpg_sign_opt) - strvec_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)) { - strvec_push(&am.args, "--skip"); - strvec_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)) { - strvec_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); - strvec_clear(&am.args); - return status; - } - - format_patch.git_cmd = 1; - 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) - strvec_split(&format_patch.args, - opts->git_format_patch_opt.buf); - strvec_push(&format_patch.args, revisions.buf); - if (opts->restrict_revision) - 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); - strvec_clear(&am.args); - - 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" - "\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); - strvec_clear(&am.args); - return status; - } - - 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) - strvec_push(&am.args, "--rerere-autoupdate"); - else if (opts->allow_rerere_autoupdate == RERERE_NOAUTOUPDATE) - strvec_push(&am.args, "--no-rerere-autoupdate"); - if (opts->gpg_sign_opt) - strvec_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.v); - 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, "keep_empty", opts->keep_empty ? "yes" : ""); - 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(state_dir_path("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; - int ignore_whitespace = 0; - 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_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, - 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), - 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), - 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_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), - 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_AUTOSTASH(&options.autostash), - 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_BOOL(0, "reapply-cherry-picks", &options.reapply_cherry_picks, - N_("apply all changes, even those already present upstream")), - 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); - /* 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)) - 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 (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_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(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)) - 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(the_repository, &options.orig_head, "reset", - options.head_name, RESET_HEAD_HARD, - 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); - ret = !!finish_rebase(&options); - goto cleanup; - } - case ACTION_QUIT: { - save_autostash(state_dir_path("autostash", &options)); - 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; - } - 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")) - 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)) - strvec_push(&options.git_am_opts, "-q"); - - if (options.empty != EMPTY_UNSPECIFIED) - imply_merge(&options, "--empty"); - - if (options.reapply_cherry_picks) - imply_merge(&options, "--reapply-cherry-picks"); - - if (gpg_sign) - 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 (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) { - 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.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_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'"); - strvec_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) { - create_autostash(the_repository, state_dir_path("autostash", &options), - DEFAULT_REFLOG_ACTION); - } - - 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(the_repository, - &options.orig_head, "checkout", - options.head_name, - RESET_HEAD_RUN_POST_CHECKOUT_HOOK, - NULL, buf.buf, - DEFAULT_REFLOG_ACTION) < 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(the_repository, &options.onto->object.oid, "checkout", NULL, - RESET_HEAD_DETACH | RESET_ORIG_HEAD | - RESET_HEAD_RUN_POST_CHECKOUT_HOOK, - NULL, msg.buf, DEFAULT_REFLOG_ACTION)) - 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(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; - } - - 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; -} |