X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=builtin%2Frevert.c;h=0d8020cf640e1abe6898308a1656446b327c83f4;hb=2bbf77dde2b47f2b8c9769c4d64f7f2f591d1e99;hp=1ea525c10e4c00b66006bf46465ebd490823f25f;hpb=4df989f9537cc9f168e96da7700f012b6367c63f;p=git.git diff --git a/builtin/revert.c b/builtin/revert.c index 1ea525c10..0d8020cf6 100644 --- a/builtin/revert.c +++ b/builtin/revert.c @@ -60,13 +60,14 @@ struct replay_opts { int allow_rerere_auto; int mainline; - int commit_argc; - const char **commit_argv; /* Merge strategy */ const char *strategy; const char **xopts; size_t xopts_nr, xopts_alloc; + + /* Only used by REPLAY_NONE */ + struct rev_info *revs; }; #define GIT_REFLOG_ACTION "GIT_REFLOG_ACTION" @@ -169,9 +170,9 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts) die(_("program error")); } - opts->commit_argc = parse_options(argc, argv, NULL, options, usage_str, - PARSE_OPT_KEEP_ARGV0 | - PARSE_OPT_KEEP_UNKNOWN); + argc = parse_options(argc, argv, NULL, options, usage_str, + PARSE_OPT_KEEP_ARGV0 | + PARSE_OPT_KEEP_UNKNOWN); /* Check for incompatible subcommands */ verify_opt_mutually_compatible(me, @@ -213,9 +214,6 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts) NULL); } - else if (opts->commit_argc < 2) - usage_with_options(usage_str, options); - if (opts->allow_ff) verify_opt_compatible(me, "--ff", "--signoff", opts->signoff, @@ -223,7 +221,20 @@ static void parse_args(int argc, const char **argv, struct replay_opts *opts) "-x", opts->record_origin, "--edit", opts->edit, NULL); - opts->commit_argv = argv; + + if (opts->subcommand != REPLAY_NONE) { + opts->revs = NULL; + } else { + opts->revs = xmalloc(sizeof(*opts->revs)); + init_revisions(opts->revs, NULL); + opts->revs->no_walk = 1; + if (argc < 2) + usage_with_options(usage_str, options); + argc = setup_revisions(argc, argv, opts->revs, NULL); + } + + if (argc > 1) + usage_with_options(usage_str, options); } struct commit_message { @@ -631,23 +642,15 @@ static int do_pick_commit(struct commit *commit, struct replay_opts *opts) return res; } -static void prepare_revs(struct rev_info *revs, struct replay_opts *opts) +static void prepare_revs(struct replay_opts *opts) { - int argc; - - init_revisions(revs, NULL); - revs->no_walk = 1; if (opts->action != REVERT) - revs->reverse = 1; - - argc = setup_revisions(opts->commit_argc, opts->commit_argv, revs, NULL); - if (argc > 1) - usage(*revert_or_cherry_pick_usage(opts)); + opts->revs->reverse ^= 1; - if (prepare_revision_walk(revs)) + if (prepare_revision_walk(opts->revs)) die(_("revision walk setup failed")); - if (!revs->commits) + if (!opts->revs->commits) die(_("empty commit set passed")); } @@ -697,44 +700,47 @@ static int format_todo(struct strbuf *buf, struct commit_list *todo_list, struct replay_opts *opts) { struct commit_list *cur = NULL; - struct commit_message msg = { NULL, NULL, NULL, NULL, NULL }; const char *sha1_abbrev = NULL; const char *action_str = opts->action == REVERT ? "revert" : "pick"; + const char *subject; + int subject_len; for (cur = todo_list; cur; cur = cur->next) { sha1_abbrev = find_unique_abbrev(cur->item->object.sha1, DEFAULT_ABBREV); - if (get_message(cur->item, &msg)) - return error(_("Cannot get commit message for %s"), sha1_abbrev); - strbuf_addf(buf, "%s %s %s\n", action_str, sha1_abbrev, msg.subject); + subject_len = find_commit_subject(cur->item->buffer, &subject); + strbuf_addf(buf, "%s %s %.*s\n", action_str, sha1_abbrev, + subject_len, subject); } return 0; } -static struct commit *parse_insn_line(char *start, struct replay_opts *opts) +static struct commit *parse_insn_line(char *bol, char *eol, struct replay_opts *opts) { unsigned char commit_sha1[20]; - char sha1_abbrev[40]; enum replay_action action; - int insn_len = 0; - char *p, *q; + char *end_of_object_name; + int saved, status, padding; - if (!prefixcmp(start, "pick ")) { + if (!prefixcmp(bol, "pick")) { action = CHERRY_PICK; - insn_len = strlen("pick"); - p = start + insn_len + 1; - } else if (!prefixcmp(start, "revert ")) { + bol += strlen("pick"); + } else if (!prefixcmp(bol, "revert")) { action = REVERT; - insn_len = strlen("revert"); - p = start + insn_len + 1; + bol += strlen("revert"); } else return NULL; - q = strchr(p, ' '); - if (!q) + /* Eat up extra spaces/ tabs before object name */ + padding = strspn(bol, " \t"); + if (!padding) return NULL; - q++; + bol += padding; - strlcpy(sha1_abbrev, p, q - p); + end_of_object_name = bol + strcspn(bol, " \t\n"); + saved = *end_of_object_name; + *end_of_object_name = '\0'; + status = get_sha1(bol, commit_sha1); + *end_of_object_name = saved; /* * Verify that the action matches up with the one in @@ -747,7 +753,7 @@ static struct commit *parse_insn_line(char *start, struct replay_opts *opts) return NULL; } - if (get_sha1(sha1_abbrev, commit_sha1) < 0) + if (status < 0) return NULL; return lookup_commit_reference(commit_sha1); @@ -762,13 +768,12 @@ static int parse_insn_buffer(char *buf, struct commit_list **todo_list, int i; for (i = 1; *p; i++) { - commit = parse_insn_line(p, opts); + char *eol = strchrnul(p, '\n'); + commit = parse_insn_line(p, eol, opts); if (!commit) return error(_("Could not parse line %d."), i); next = commit_list_append(commit, next); - p = strchrnul(p, '\n'); - if (*p) - p++; + p = *eol ? eol + 1 : eol; } if (!*todo_list) return error(_("No commits parsed.")); @@ -844,14 +849,13 @@ static void read_populate_opts(struct replay_opts **opts_ptr) static void walk_revs_populate_todo(struct commit_list **todo_list, struct replay_opts *opts) { - struct rev_info revs; struct commit *commit; struct commit_list **next; - prepare_revs(&revs, opts); + prepare_revs(opts); next = todo_list; - while ((commit = get_revision(&revs))) + while ((commit = get_revision(opts->revs))) next = commit_list_append(commit, next); } @@ -901,7 +905,7 @@ static int rollback_single_pick(void) if (!file_exists(git_path("CHERRY_PICK_HEAD")) && !file_exists(git_path("REVERT_HEAD"))) return error(_("no cherry-pick or revert in progress")); - if (!resolve_ref("HEAD", head_sha1, 0, NULL)) + if (read_ref_full("HEAD", head_sha1, 0, NULL)) return error(_("cannot resolve HEAD")); if (is_null_sha1(head_sha1)) return error(_("cannot abort from a branch yet to be born")); @@ -942,7 +946,7 @@ static int sequencer_rollback(struct replay_opts *opts) } if (reset_for_rollback(sha1)) goto fail; - remove_sequencer_state(1); + remove_sequencer_state(); strbuf_release(&buf); return 0; fail: @@ -1016,33 +1020,64 @@ static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts) for (cur = todo_list; cur; cur = cur->next) { save_todo(cur, opts); res = do_pick_commit(cur->item, opts); - if (res) { - if (!cur->next) - /* - * An error was encountered while - * picking the last commit; the - * sequencer state is useless now -- - * the user simply needs to resolve - * the conflict and commit - */ - remove_sequencer_state(0); + if (res) return res; - } } /* * Sequence of picks finished successfully; cleanup by * removing the .git/sequencer directory */ - remove_sequencer_state(1); + remove_sequencer_state(); return 0; } +static int continue_single_pick(void) +{ + const char *argv[] = { "commit", NULL }; + + if (!file_exists(git_path("CHERRY_PICK_HEAD")) && + !file_exists(git_path("REVERT_HEAD"))) + return error(_("no cherry-pick or revert in progress")); + return run_command_v_opt(argv, RUN_GIT_CMD); +} + +static int sequencer_continue(struct replay_opts *opts) +{ + struct commit_list *todo_list = NULL; + + if (!file_exists(git_path(SEQ_TODO_FILE))) + return continue_single_pick(); + read_populate_opts(&opts); + read_populate_todo(&todo_list, opts); + + /* Verify that the conflict has been resolved */ + if (file_exists(git_path("CHERRY_PICK_HEAD")) || + file_exists(git_path("REVERT_HEAD"))) { + int ret = continue_single_pick(); + if (ret) + return ret; + } + if (index_differs_from("HEAD", 0)) + return error_dirty_index(opts); + todo_list = todo_list->next; + return pick_commits(todo_list, opts); +} + +static int single_pick(struct commit *cmit, struct replay_opts *opts) +{ + setenv(GIT_REFLOG_ACTION, action_name(opts), 0); + return do_pick_commit(cmit, opts); +} + static int pick_revisions(struct replay_opts *opts) { struct commit_list *todo_list = NULL; unsigned char sha1[20]; + if (opts->subcommand == REPLAY_NONE) + assert(opts->revs); + read_and_refresh_cache(opts); /* @@ -1051,21 +1086,32 @@ static int pick_revisions(struct replay_opts *opts) * one that is being continued */ if (opts->subcommand == REPLAY_REMOVE_STATE) { - remove_sequencer_state(1); + remove_sequencer_state(); return 0; } if (opts->subcommand == REPLAY_ROLLBACK) return sequencer_rollback(opts); - if (opts->subcommand == REPLAY_CONTINUE) { - if (!file_exists(git_path(SEQ_TODO_FILE))) - return error(_("No %s in progress"), action_name(opts)); - read_populate_opts(&opts); - read_populate_todo(&todo_list, opts); - - /* Verify that the conflict has been resolved */ - if (!index_differs_from("HEAD", 0)) - todo_list = todo_list->next; - return pick_commits(todo_list, opts); + if (opts->subcommand == REPLAY_CONTINUE) + return sequencer_continue(opts); + + /* + * If we were called as "git cherry-pick ", just + * cherry-pick/revert it, set CHERRY_PICK_HEAD / + * REVERT_HEAD, and don't touch the sequencer state. + * This means it is possible to cherry-pick in the middle + * of a cherry-pick sequence. + */ + if (opts->revs->cmdline.nr == 1 && + opts->revs->cmdline.rev->whence == REV_CMD_REV && + opts->revs->no_walk && + !opts->revs->cmdline.rev->flags) { + struct commit *cmit; + if (prepare_revision_walk(opts->revs)) + die(_("revision walk setup failed")); + cmit = get_revision(opts->revs); + if (!cmit || get_revision(opts->revs)) + die("BUG: expected exactly one commit from walk"); + return single_pick(cmit, opts); } /*