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![Phillip Wood](/assets/img/avatar_default.png)
Separate out calculating the merge base between 'onto' and 'HEAD' from the check for whether we can fast-forward or not. This means we can skip the fast-forward checks when the rebase is forced and avoid calculating the merge-base between 'HEAD' and 'onto' when --keep-base is given. Signed-off-by: Phillip Wood <phillip.wood@dunelm.org.uk> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1834 lines
53 KiB
C
1834 lines
53 KiB
C
/*
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* "git rebase" builtin command
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*
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* Copyright (c) 2018 Pratik Karki
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*/
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#define USE_THE_INDEX_COMPATIBILITY_MACROS
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#include "builtin.h"
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#include "run-command.h"
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#include "exec-cmd.h"
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#include "strvec.h"
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#include "dir.h"
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#include "packfile.h"
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#include "refs.h"
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#include "quote.h"
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#include "config.h"
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#include "cache-tree.h"
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#include "unpack-trees.h"
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#include "lockfile.h"
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#include "parse-options.h"
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#include "commit.h"
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#include "diff.h"
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#include "wt-status.h"
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#include "revision.h"
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#include "commit-reach.h"
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#include "rerere.h"
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#include "branch.h"
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#include "sequencer.h"
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#include "rebase-interactive.h"
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#include "reset.h"
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#include "hook.h"
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#define DEFAULT_REFLOG_ACTION "rebase"
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static char const * const builtin_rebase_usage[] = {
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N_("git rebase [-i] [options] [--exec <cmd>] "
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"[--onto <newbase> | --keep-base] [<upstream> [<branch>]]"),
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N_("git rebase [-i] [options] [--exec <cmd>] [--onto <newbase>] "
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"--root [<branch>]"),
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"git rebase --continue | --abort | --skip | --edit-todo",
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NULL
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};
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static GIT_PATH_FUNC(path_squash_onto, "rebase-merge/squash-onto")
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static GIT_PATH_FUNC(path_interactive, "rebase-merge/interactive")
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static GIT_PATH_FUNC(apply_dir, "rebase-apply")
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static GIT_PATH_FUNC(merge_dir, "rebase-merge")
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enum rebase_type {
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REBASE_UNSPECIFIED = -1,
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REBASE_APPLY,
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REBASE_MERGE
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};
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enum empty_type {
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EMPTY_UNSPECIFIED = -1,
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EMPTY_DROP,
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EMPTY_KEEP,
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EMPTY_ASK
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};
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struct rebase_options {
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enum rebase_type type;
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enum empty_type empty;
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const char *default_backend;
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const char *state_dir;
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struct commit *upstream;
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const char *upstream_name;
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const char *upstream_arg;
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char *head_name;
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struct commit *orig_head;
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struct commit *onto;
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const char *onto_name;
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const char *revisions;
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const char *switch_to;
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int root, root_with_onto;
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struct object_id *squash_onto;
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struct commit *restrict_revision;
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int dont_finish_rebase;
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enum {
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REBASE_NO_QUIET = 1<<0,
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REBASE_VERBOSE = 1<<1,
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REBASE_DIFFSTAT = 1<<2,
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REBASE_FORCE = 1<<3,
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REBASE_INTERACTIVE_EXPLICIT = 1<<4,
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} flags;
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struct strvec git_am_opts;
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const char *action;
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int signoff;
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int allow_rerere_autoupdate;
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int keep_empty;
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int autosquash;
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char *gpg_sign_opt;
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int autostash;
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int committer_date_is_author_date;
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int ignore_date;
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char *cmd;
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int allow_empty_message;
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int rebase_merges, rebase_cousins;
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char *strategy, *strategy_opts;
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struct strbuf git_format_patch_opt;
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int reschedule_failed_exec;
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int reapply_cherry_picks;
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int fork_point;
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};
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#define REBASE_OPTIONS_INIT { \
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.type = REBASE_UNSPECIFIED, \
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.empty = EMPTY_UNSPECIFIED, \
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.keep_empty = 1, \
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.default_backend = "merge", \
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.flags = REBASE_NO_QUIET, \
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.git_am_opts = STRVEC_INIT, \
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.git_format_patch_opt = STRBUF_INIT, \
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.fork_point = -1, \
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}
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static struct replay_opts get_replay_opts(const struct rebase_options *opts)
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{
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struct replay_opts replay = REPLAY_OPTS_INIT;
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replay.action = REPLAY_INTERACTIVE_REBASE;
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replay.strategy = NULL;
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sequencer_init_config(&replay);
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replay.signoff = opts->signoff;
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replay.allow_ff = !(opts->flags & REBASE_FORCE);
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if (opts->allow_rerere_autoupdate)
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replay.allow_rerere_auto = opts->allow_rerere_autoupdate;
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replay.allow_empty = 1;
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replay.allow_empty_message = opts->allow_empty_message;
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replay.drop_redundant_commits = (opts->empty == EMPTY_DROP);
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replay.keep_redundant_commits = (opts->empty == EMPTY_KEEP);
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replay.quiet = !(opts->flags & REBASE_NO_QUIET);
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replay.verbose = opts->flags & REBASE_VERBOSE;
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replay.reschedule_failed_exec = opts->reschedule_failed_exec;
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replay.committer_date_is_author_date =
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opts->committer_date_is_author_date;
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replay.ignore_date = opts->ignore_date;
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replay.gpg_sign = xstrdup_or_null(opts->gpg_sign_opt);
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if (opts->strategy)
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replay.strategy = xstrdup_or_null(opts->strategy);
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else if (!replay.strategy && replay.default_strategy) {
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replay.strategy = replay.default_strategy;
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replay.default_strategy = NULL;
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}
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if (opts->strategy_opts)
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parse_strategy_opts(&replay, opts->strategy_opts);
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if (opts->squash_onto) {
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oidcpy(&replay.squash_onto, opts->squash_onto);
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replay.have_squash_onto = 1;
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}
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return replay;
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}
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enum action {
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ACTION_NONE = 0,
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ACTION_CONTINUE,
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ACTION_SKIP,
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ACTION_ABORT,
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ACTION_QUIT,
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ACTION_EDIT_TODO,
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ACTION_SHOW_CURRENT_PATCH
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};
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static const char *action_names[] = { "undefined",
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"continue",
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"skip",
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"abort",
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"quit",
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"edit_todo",
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"show_current_patch" };
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static int edit_todo_file(unsigned flags)
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{
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const char *todo_file = rebase_path_todo();
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struct todo_list todo_list = TODO_LIST_INIT,
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new_todo = TODO_LIST_INIT;
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int res = 0;
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if (strbuf_read_file(&todo_list.buf, todo_file, 0) < 0)
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return error_errno(_("could not read '%s'."), todo_file);
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strbuf_stripspace(&todo_list.buf, 1);
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res = edit_todo_list(the_repository, &todo_list, &new_todo, NULL, NULL, flags);
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if (!res && todo_list_write_to_file(the_repository, &new_todo, todo_file,
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NULL, NULL, -1, flags & ~(TODO_LIST_SHORTEN_IDS)))
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res = error_errno(_("could not write '%s'"), todo_file);
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todo_list_release(&todo_list);
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todo_list_release(&new_todo);
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return res;
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}
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static int get_revision_ranges(struct commit *upstream, struct commit *onto,
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struct object_id *orig_head, char **revisions,
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char **shortrevisions)
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{
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struct commit *base_rev = upstream ? upstream : onto;
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const char *shorthead;
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*revisions = xstrfmt("%s...%s", oid_to_hex(&base_rev->object.oid),
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oid_to_hex(orig_head));
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shorthead = find_unique_abbrev(orig_head, DEFAULT_ABBREV);
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if (upstream) {
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const char *shortrev;
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shortrev = find_unique_abbrev(&base_rev->object.oid,
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DEFAULT_ABBREV);
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*shortrevisions = xstrfmt("%s..%s", shortrev, shorthead);
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} else
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*shortrevisions = xstrdup(shorthead);
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return 0;
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}
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static int init_basic_state(struct replay_opts *opts, const char *head_name,
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struct commit *onto,
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const struct object_id *orig_head)
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{
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FILE *interactive;
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if (!is_directory(merge_dir()) && mkdir_in_gitdir(merge_dir()))
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return error_errno(_("could not create temporary %s"), merge_dir());
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delete_reflog("REBASE_HEAD");
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interactive = fopen(path_interactive(), "w");
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if (!interactive)
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return error_errno(_("could not mark as interactive"));
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fclose(interactive);
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return write_basic_state(opts, head_name, onto, orig_head);
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}
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static void split_exec_commands(const char *cmd, struct string_list *commands)
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{
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if (cmd && *cmd) {
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string_list_split(commands, cmd, '\n', -1);
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/* rebase.c adds a new line to cmd after every command,
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* so here the last command is always empty */
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string_list_remove_empty_items(commands, 0);
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}
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}
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static int do_interactive_rebase(struct rebase_options *opts, unsigned flags)
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{
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int ret;
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char *revisions = NULL, *shortrevisions = NULL;
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struct strvec make_script_args = STRVEC_INIT;
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struct todo_list todo_list = TODO_LIST_INIT;
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struct replay_opts replay = get_replay_opts(opts);
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struct string_list commands = STRING_LIST_INIT_DUP;
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if (get_revision_ranges(opts->upstream, opts->onto, &opts->orig_head->object.oid,
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&revisions, &shortrevisions))
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return -1;
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if (init_basic_state(&replay,
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opts->head_name ? opts->head_name : "detached HEAD",
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opts->onto, &opts->orig_head->object.oid)) {
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free(revisions);
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free(shortrevisions);
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return -1;
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}
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if (!opts->upstream && opts->squash_onto)
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write_file(path_squash_onto(), "%s\n",
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oid_to_hex(opts->squash_onto));
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strvec_pushl(&make_script_args, "", revisions, NULL);
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if (opts->restrict_revision)
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strvec_pushf(&make_script_args, "^%s",
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oid_to_hex(&opts->restrict_revision->object.oid));
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ret = sequencer_make_script(the_repository, &todo_list.buf,
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make_script_args.nr, make_script_args.v,
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flags);
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if (ret)
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error(_("could not generate todo list"));
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else {
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discard_cache();
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if (todo_list_parse_insn_buffer(the_repository, todo_list.buf.buf,
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&todo_list))
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BUG("unusable todo list");
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split_exec_commands(opts->cmd, &commands);
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ret = complete_action(the_repository, &replay, flags,
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shortrevisions, opts->onto_name, opts->onto,
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&opts->orig_head->object.oid, &commands,
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opts->autosquash, &todo_list);
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}
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string_list_clear(&commands, 0);
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free(revisions);
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free(shortrevisions);
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todo_list_release(&todo_list);
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strvec_clear(&make_script_args);
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return ret;
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}
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static int run_sequencer_rebase(struct rebase_options *opts,
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enum action command)
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{
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unsigned flags = 0;
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int abbreviate_commands = 0, ret = 0;
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git_config_get_bool("rebase.abbreviatecommands", &abbreviate_commands);
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flags |= opts->keep_empty ? TODO_LIST_KEEP_EMPTY : 0;
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flags |= abbreviate_commands ? TODO_LIST_ABBREVIATE_CMDS : 0;
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flags |= opts->rebase_merges ? TODO_LIST_REBASE_MERGES : 0;
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flags |= opts->rebase_cousins > 0 ? TODO_LIST_REBASE_COUSINS : 0;
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flags |= opts->root_with_onto ? TODO_LIST_ROOT_WITH_ONTO : 0;
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flags |= opts->reapply_cherry_picks ? TODO_LIST_REAPPLY_CHERRY_PICKS : 0;
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flags |= opts->flags & REBASE_NO_QUIET ? TODO_LIST_WARN_SKIPPED_CHERRY_PICKS : 0;
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switch (command) {
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case ACTION_NONE: {
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if (!opts->onto && !opts->upstream)
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die(_("a base commit must be provided with --upstream or --onto"));
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ret = do_interactive_rebase(opts, flags);
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break;
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}
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case ACTION_SKIP: {
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struct string_list merge_rr = STRING_LIST_INIT_DUP;
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rerere_clear(the_repository, &merge_rr);
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}
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/* fallthrough */
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case ACTION_CONTINUE: {
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struct replay_opts replay_opts = get_replay_opts(opts);
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ret = sequencer_continue(the_repository, &replay_opts);
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break;
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}
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case ACTION_EDIT_TODO:
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ret = edit_todo_file(flags);
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break;
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case ACTION_SHOW_CURRENT_PATCH: {
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struct child_process cmd = CHILD_PROCESS_INIT;
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cmd.git_cmd = 1;
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strvec_pushl(&cmd.args, "show", "REBASE_HEAD", "--", NULL);
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ret = run_command(&cmd);
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break;
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}
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default:
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BUG("invalid command '%d'", command);
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}
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return ret;
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}
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static void imply_merge(struct rebase_options *opts, const char *option);
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static int parse_opt_keep_empty(const struct option *opt, const char *arg,
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int unset)
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{
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struct rebase_options *opts = opt->value;
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BUG_ON_OPT_ARG(arg);
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imply_merge(opts, unset ? "--no-keep-empty" : "--keep-empty");
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opts->keep_empty = !unset;
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opts->type = REBASE_MERGE;
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return 0;
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}
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static int is_merge(struct rebase_options *opts)
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{
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return opts->type == REBASE_MERGE;
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}
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static void imply_merge(struct rebase_options *opts, const char *option)
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{
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switch (opts->type) {
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case REBASE_APPLY:
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die(_("%s requires the merge backend"), option);
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break;
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case REBASE_MERGE:
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break;
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default:
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opts->type = REBASE_MERGE; /* implied */
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break;
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}
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}
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/* Returns the filename prefixed by the state_dir */
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static const char *state_dir_path(const char *filename, struct rebase_options *opts)
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{
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static struct strbuf path = STRBUF_INIT;
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static size_t prefix_len;
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if (!prefix_len) {
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strbuf_addf(&path, "%s/", opts->state_dir);
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prefix_len = path.len;
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}
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strbuf_setlen(&path, prefix_len);
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strbuf_addstr(&path, filename);
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return path.buf;
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}
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/* Initialize the rebase options from the state directory. */
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static int read_basic_state(struct rebase_options *opts)
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{
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struct strbuf head_name = STRBUF_INIT;
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struct strbuf buf = STRBUF_INIT;
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struct object_id oid;
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if (!read_oneliner(&head_name, state_dir_path("head-name", opts),
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READ_ONELINER_WARN_MISSING) ||
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!read_oneliner(&buf, state_dir_path("onto", opts),
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READ_ONELINER_WARN_MISSING))
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return -1;
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opts->head_name = starts_with(head_name.buf, "refs/") ?
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xstrdup(head_name.buf) : NULL;
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strbuf_release(&head_name);
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if (get_oid_hex(buf.buf, &oid) ||
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!(opts->onto = lookup_commit_object(the_repository, &oid)))
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return error(_("invalid onto: '%s'"), buf.buf);
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/*
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* We always write to orig-head, but interactive rebase used to write to
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* head. Fall back to reading from head to cover for the case that the
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* user upgraded git with an ongoing interactive rebase.
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*/
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strbuf_reset(&buf);
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if (file_exists(state_dir_path("orig-head", opts))) {
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if (!read_oneliner(&buf, state_dir_path("orig-head", opts),
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READ_ONELINER_WARN_MISSING))
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return -1;
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} else if (!read_oneliner(&buf, state_dir_path("head", opts),
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READ_ONELINER_WARN_MISSING))
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return -1;
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if (get_oid_hex(buf.buf, &oid) ||
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!(opts->orig_head = lookup_commit_object(the_repository, &oid)))
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return error(_("invalid orig-head: '%s'"), buf.buf);
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if (file_exists(state_dir_path("quiet", opts)))
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opts->flags &= ~REBASE_NO_QUIET;
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else
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opts->flags |= REBASE_NO_QUIET;
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if (file_exists(state_dir_path("verbose", opts)))
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opts->flags |= REBASE_VERBOSE;
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if (file_exists(state_dir_path("signoff", opts))) {
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opts->signoff = 1;
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opts->flags |= REBASE_FORCE;
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}
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if (file_exists(state_dir_path("allow_rerere_autoupdate", opts))) {
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strbuf_reset(&buf);
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if (!read_oneliner(&buf, state_dir_path("allow_rerere_autoupdate", opts),
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READ_ONELINER_WARN_MISSING))
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return -1;
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if (!strcmp(buf.buf, "--rerere-autoupdate"))
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opts->allow_rerere_autoupdate = RERERE_AUTOUPDATE;
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else if (!strcmp(buf.buf, "--no-rerere-autoupdate"))
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opts->allow_rerere_autoupdate = RERERE_NOAUTOUPDATE;
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else
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warning(_("ignoring invalid allow_rerere_autoupdate: "
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"'%s'"), buf.buf);
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}
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if (file_exists(state_dir_path("gpg_sign_opt", opts))) {
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strbuf_reset(&buf);
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|
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->object.oid));
|
|
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);
|
|
unlink(git_path_auto_merge(the_repository));
|
|
apply_autostash(state_dir_path("autostash", opts));
|
|
/*
|
|
* 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 int move_to_original_branch(struct rebase_options *opts)
|
|
{
|
|
struct strbuf branch_reflog = STRBUF_INIT, head_reflog = STRBUF_INIT;
|
|
struct reset_head_opts ropts = { 0 };
|
|
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(&branch_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);
|
|
ropts.branch = opts->head_name;
|
|
ropts.flags = RESET_HEAD_REFS_ONLY;
|
|
ropts.branch_msg = branch_reflog.buf;
|
|
ropts.head_msg = head_reflog.buf;
|
|
ret = reset_head(the_repository, &ropts);
|
|
|
|
strbuf_release(&branch_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->object.oid));
|
|
|
|
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) {
|
|
struct reset_head_opts ropts = { 0 };
|
|
unlink(rebased_patches);
|
|
free(rebased_patches);
|
|
strvec_clear(&am.args);
|
|
|
|
ropts.oid = &opts->orig_head->object.oid;
|
|
ropts.branch = opts->head_name;
|
|
ropts.default_reflog_action = DEFAULT_REFLOG_ACTION;
|
|
reset_head(the_repository, &ropts);
|
|
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)
|
|
{
|
|
int status;
|
|
|
|
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);
|
|
} else if (opts->type == REBASE_APPLY)
|
|
status = run_am(opts);
|
|
else
|
|
BUG("Unhandled rebase type %d", opts->type);
|
|
|
|
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");
|
|
}
|
|
|
|
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.forkpoint")) {
|
|
opts->fork_point = git_config_bool(var, value) ? -1 : 0;
|
|
return 0;
|
|
}
|
|
|
|
if (!strcmp(var, "rebase.backend")) {
|
|
return git_config_string(&opts->default_backend, var, value);
|
|
}
|
|
|
|
return git_default_config(var, value, data);
|
|
}
|
|
|
|
static int checkout_up_to_date(struct rebase_options *options)
|
|
{
|
|
struct strbuf buf = STRBUF_INIT;
|
|
struct reset_head_opts ropts = { 0 };
|
|
int ret = 0;
|
|
|
|
strbuf_addf(&buf, "%s: checkout %s",
|
|
getenv(GIT_REFLOG_ACTION_ENVIRONMENT),
|
|
options->switch_to);
|
|
ropts.oid = &options->orig_head->object.oid;
|
|
ropts.branch = options->head_name;
|
|
ropts.flags = RESET_HEAD_RUN_POST_CHECKOUT_HOOK;
|
|
if (!ropts.branch)
|
|
ropts.flags |= RESET_HEAD_DETACH;
|
|
ropts.head_msg = buf.buf;
|
|
if (reset_head(the_repository, &ropts) < 0)
|
|
ret = error(_("could not switch to %s"), options->switch_to);
|
|
strbuf_release(&buf);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* 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 commit *head, struct object_id *branch_base)
|
|
{
|
|
struct commit_list *merge_bases = NULL;
|
|
int res = 0;
|
|
|
|
if (is_null_oid(branch_base))
|
|
goto done; /* fill_branch_base() found multiple merge bases */
|
|
|
|
if (!oideq(branch_base, &onto->object.oid))
|
|
goto done;
|
|
|
|
if (restrict_revision && !oideq(&restrict_revision->object.oid, branch_base))
|
|
goto done;
|
|
|
|
if (!upstream)
|
|
goto done;
|
|
|
|
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 void fill_branch_base(struct rebase_options *options,
|
|
struct object_id *branch_base)
|
|
{
|
|
struct commit_list *merge_bases = NULL;
|
|
|
|
merge_bases = get_merge_bases(options->onto, options->orig_head);
|
|
if (!merge_bases || merge_bases->next)
|
|
oidcpy(branch_base, null_oid());
|
|
else
|
|
oidcpy(branch_base, &merge_bases->item->object.oid);
|
|
|
|
free_commit_list(merge_bases);
|
|
}
|
|
|
|
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 -r is still explicitly interactive, but -r 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 branch_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;
|
|
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;
|
|
int preserve_merges_selected = 0;
|
|
struct reset_head_opts ropts = { 0 };
|
|
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 trailer 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", &preserve_merges_selected,
|
|
N_("(REMOVED) was: try to recreate merges "
|
|
"instead of ignoring them"),
|
|
1, 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", &options.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);
|
|
|
|
prepare_repo_settings(the_repository);
|
|
the_repository->settings.command_requires_full_index = 0;
|
|
|
|
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);
|
|
|
|
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 (!(action == ACTION_ABORT) && is_directory(buf.buf)) {
|
|
die(_("`rebase --preserve-merges` (-p) is no longer supported.\n"
|
|
"Use `git rebase --abort` to terminate current rebase.\n"
|
|
"Or downgrade to v2.33, or earlier, to complete the rebase."));
|
|
} else {
|
|
strbuf_reset(&buf);
|
|
strbuf_addf(&buf, "%s/interactive", merge_dir());
|
|
options.type = REBASE_MERGE;
|
|
if (file_exists(buf.buf))
|
|
options.flags |= REBASE_INTERACTIVE_EXPLICIT;
|
|
}
|
|
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 (preserve_merges_selected)
|
|
die(_("--preserve-merges was replaced by --rebase-merges\n"
|
|
"Note: Your `pull.rebase` configuration may also be set to 'preserve',\n"
|
|
"which is no longer supported; use 'merges' instead"));
|
|
|
|
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 (keep_base) {
|
|
if (options.onto_name)
|
|
die(_("options '%s' and '%s' cannot be used together"), "--keep-base", "--onto");
|
|
if (options.root)
|
|
die(_("options '%s' and '%s' cannot be used together"), "--keep-base", "--root");
|
|
}
|
|
|
|
if (options.root && options.fork_point > 0)
|
|
die(_("options '%s' and '%s' cannot be used together"), "--root", "--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);
|
|
ropts.flags = RESET_HEAD_HARD;
|
|
if (reset_head(the_repository, &ropts) < 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);
|
|
ropts.oid = &options.orig_head->object.oid;
|
|
ropts.branch = options.head_name;
|
|
ropts.flags = RESET_HEAD_HARD;
|
|
ropts.default_reflog_action = DEFAULT_REFLOG_ACTION;
|
|
if (reset_head(the_repository, &ropts) < 0)
|
|
die(_("could not move back to %s"),
|
|
oid_to_hex(&options.orig_head->object.oid));
|
|
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 */
|
|
if (ignore_whitespace) {
|
|
string_list_append(&strategy_options,
|
|
"ignore-space-change");
|
|
}
|
|
}
|
|
|
|
if (strategy_options.nr) {
|
|
int i;
|
|
|
|
if (!options.strategy)
|
|
options.strategy = "ort";
|
|
|
|
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:
|
|
/* 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(_("apply options and merge options "
|
|
"cannot be used together"));
|
|
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);
|
|
}
|
|
|
|
if (options.type == REBASE_MERGE &&
|
|
!options.strategy &&
|
|
getenv("GIT_TEST_MERGE_ALGORITHM"))
|
|
options.strategy = xstrdup(getenv("GIT_TEST_MERGE_ALGORITHM"));
|
|
|
|
switch (options.type) {
|
|
case REBASE_MERGE:
|
|
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) {
|
|
strvec_push(&options.git_am_opts, "--signoff");
|
|
options.flags |= REBASE_FORCE;
|
|
}
|
|
|
|
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 (options.fork_point < 0)
|
|
options.fork_point = 1;
|
|
} else {
|
|
options.upstream_name = argv[0];
|
|
argc--;
|
|
argv++;
|
|
if (!strcmp(options.upstream_name, "-"))
|
|
options.upstream_name = "@{-1}";
|
|
}
|
|
options.upstream =
|
|
lookup_commit_reference_by_name(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";
|
|
}
|
|
|
|
/*
|
|
* 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"? */
|
|
struct object_id branch_oid;
|
|
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, &branch_oid)) {
|
|
die_if_checked_out(buf.buf, 1);
|
|
options.head_name = xstrdup(buf.buf);
|
|
options.orig_head =
|
|
lookup_commit_object(the_repository,
|
|
&branch_oid);
|
|
/* If not is it a valid ref (branch or commit)? */
|
|
} else {
|
|
options.orig_head =
|
|
lookup_commit_reference_by_name(branch_name);
|
|
options.head_name = NULL;
|
|
}
|
|
if (!options.orig_head)
|
|
die(_("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";
|
|
}
|
|
options.orig_head = lookup_commit_reference_by_name("HEAD");
|
|
if (!options.orig_head)
|
|
die(_("Could not resolve HEAD to a commit"));
|
|
} else
|
|
BUG("unexpected number of arguments left to parse");
|
|
|
|
/* Make sure the branch to rebase onto is valid. */
|
|
if (keep_base) {
|
|
strbuf_reset(&buf);
|
|
strbuf_addstr(&buf, options.upstream_name);
|
|
strbuf_addstr(&buf, "...");
|
|
strbuf_addstr(&buf, branch_name);
|
|
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, &branch_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(&branch_base,
|
|
options.onto_name);
|
|
} else {
|
|
options.onto =
|
|
lookup_commit_reference_by_name(options.onto_name);
|
|
if (!options.onto)
|
|
die(_("Does not point to a valid commit '%s'"),
|
|
options.onto_name);
|
|
fill_branch_base(&options, &branch_base);
|
|
}
|
|
|
|
if (options.fork_point > 0)
|
|
options.restrict_revision =
|
|
get_fork_point(options.upstream_name, options.orig_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));
|
|
|
|
|
|
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.
|
|
*/
|
|
if (allow_preemptive_ff &&
|
|
can_fast_forward(options.onto, options.upstream, options.restrict_revision,
|
|
options.orig_head, &branch_base)) {
|
|
int flag;
|
|
|
|
if (!(options.flags & REBASE_FORCE)) {
|
|
/* Lazily switch to the target branch if needed... */
|
|
if (options.switch_to) {
|
|
ret = checkout_up_to_date(&options);
|
|
if (ret)
|
|
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_hooks_l("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(&branch_base))
|
|
printf(_("Changes to %s:\n"),
|
|
oid_to_hex(&options.onto->object.oid));
|
|
else
|
|
printf(_("Changes from %s to %s:\n"),
|
|
oid_to_hex(&branch_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(&branch_base) ?
|
|
the_hash_algo->empty_tree : &branch_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);
|
|
ropts.oid = &options.onto->object.oid;
|
|
ropts.orig_head = &options.orig_head->object.oid,
|
|
ropts.flags = RESET_HEAD_DETACH | RESET_ORIG_HEAD |
|
|
RESET_HEAD_RUN_POST_CHECKOUT_HOOK;
|
|
ropts.head_msg = msg.buf;
|
|
ropts.default_reflog_action = DEFAULT_REFLOG_ACTION;
|
|
if (reset_head(the_repository, &ropts))
|
|
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(&branch_base, &options.orig_head->object.oid)) {
|
|
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));
|
|
memset(&ropts, 0, sizeof(ropts));
|
|
ropts.branch = options.head_name;
|
|
ropts.flags = RESET_HEAD_REFS_ONLY;
|
|
ropts.head_msg = msg.buf;
|
|
reset_head(the_repository, &ropts);
|
|
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->object.oid));
|
|
|
|
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(options.strategy);
|
|
strbuf_release(&options.git_format_patch_opt);
|
|
free(squash_onto_name);
|
|
return !!ret;
|
|
}
|