From 6ca89c6f399b86983c7e93a3c5b918cad8292b47 Mon Sep 17 00:00:00 2001 From: Alban Gruin Date: Tue, 29 Jan 2019 16:01:49 +0100 Subject: [PATCH] sequencer: refactor check_todo_list() to work on a todo_list This refactors check_todo_list() to work on a todo_list to avoid redundant reads and writes to the disk. The function is renamed todo_list_check(). The parsing of the two todo lists is left to the caller. As rebase -p still need to check the todo list from the disk, a new function is introduced, check_todo_list_from_file(). It reads the file from the disk, parses it, pass the todo_list to todo_list_check(), and writes it back to the disk. As get_missing_commit_check_level() and the enum missing_commit_check_level are no longer needed inside of sequencer.c, they are moved to rebase-interactive.c, and made static again. Signed-off-by: Alban Gruin Signed-off-by: Junio C Hamano --- builtin/rebase--interactive.c | 2 +- rebase-interactive.c | 91 ++++++++++++++++++++++++- rebase-interactive.h | 2 + sequencer.c | 121 +++++++--------------------------- sequencer.h | 9 +-- 5 files changed, 117 insertions(+), 108 deletions(-) diff --git a/builtin/rebase--interactive.c b/builtin/rebase--interactive.c index 0898eb4c59..df19ccaeb9 100644 --- a/builtin/rebase--interactive.c +++ b/builtin/rebase--interactive.c @@ -256,7 +256,7 @@ int cmd_rebase__interactive(int argc, const char **argv, const char *prefix) ret = transform_todo_file(the_repository, flags); break; case CHECK_TODO_LIST: - ret = check_todo_list(the_repository); + ret = check_todo_list_from_file(the_repository); break; case REARRANGE_SQUASH: ret = rearrange_squash(the_repository); diff --git a/rebase-interactive.c b/rebase-interactive.c index 842fa07e7e..dfa6dd530f 100644 --- a/rebase-interactive.c +++ b/rebase-interactive.c @@ -1,8 +1,32 @@ #include "cache.h" #include "commit.h" -#include "rebase-interactive.h" #include "sequencer.h" +#include "rebase-interactive.h" #include "strbuf.h" +#include "commit-slab.h" +#include "config.h" + +enum missing_commit_check_level { + MISSING_COMMIT_CHECK_IGNORE = 0, + MISSING_COMMIT_CHECK_WARN, + MISSING_COMMIT_CHECK_ERROR +}; + +static enum missing_commit_check_level get_missing_commit_check_level(void) +{ + const char *value; + + if (git_config_get_value("rebase.missingcommitscheck", &value) || + !strcasecmp("ignore", value)) + return MISSING_COMMIT_CHECK_IGNORE; + if (!strcasecmp("warn", value)) + return MISSING_COMMIT_CHECK_WARN; + if (!strcasecmp("error", value)) + return MISSING_COMMIT_CHECK_ERROR; + warning(_("unrecognized setting %s for option " + "rebase.missingCommitsCheck. Ignoring."), value); + return MISSING_COMMIT_CHECK_IGNORE; +} void append_todo_help(unsigned edit_todo, unsigned keep_empty, struct strbuf *buf) @@ -89,3 +113,68 @@ int edit_todo_list(struct repository *r, unsigned flags) return 0; } + +define_commit_slab(commit_seen, unsigned char); +/* + * Check if the user dropped some commits by mistake + * Behaviour determined by rebase.missingCommitsCheck. + * Check if there is an unrecognized command or a + * bad SHA-1 in a command. + */ +int todo_list_check(struct todo_list *old_todo, struct todo_list *new_todo) +{ + enum missing_commit_check_level check_level = get_missing_commit_check_level(); + struct strbuf missing = STRBUF_INIT; + int res = 0, i; + struct commit_seen commit_seen; + + init_commit_seen(&commit_seen); + + if (check_level == MISSING_COMMIT_CHECK_IGNORE) + goto leave_check; + + /* Mark the commits in git-rebase-todo as seen */ + for (i = 0; i < new_todo->nr; i++) { + struct commit *commit = new_todo->items[i].commit; + if (commit) + *commit_seen_at(&commit_seen, commit) = 1; + } + + /* Find commits in git-rebase-todo.backup yet unseen */ + for (i = old_todo->nr - 1; i >= 0; i--) { + struct todo_item *item = old_todo->items + i; + struct commit *commit = item->commit; + if (commit && !*commit_seen_at(&commit_seen, commit)) { + strbuf_addf(&missing, " - %s %.*s\n", + find_unique_abbrev(&commit->object.oid, DEFAULT_ABBREV), + item->arg_len, + todo_item_get_arg(old_todo, item)); + *commit_seen_at(&commit_seen, commit) = 1; + } + } + + /* Warn about missing commits */ + if (!missing.len) + goto leave_check; + + if (check_level == MISSING_COMMIT_CHECK_ERROR) + res = 1; + + fprintf(stderr, + _("Warning: some commits may have been dropped accidentally.\n" + "Dropped commits (newer to older):\n")); + + /* Make the list user-friendly and display */ + fputs(missing.buf, stderr); + strbuf_release(&missing); + + fprintf(stderr, _("To avoid this message, use \"drop\" to " + "explicitly remove a commit.\n\n" + "Use 'git config rebase.missingCommitsCheck' to change " + "the level of warnings.\n" + "The possible behaviours are: ignore, warn, error.\n\n")); + +leave_check: + clear_commit_seen(&commit_seen); + return res; +} diff --git a/rebase-interactive.h b/rebase-interactive.h index 17b6c9f6d0..187b5032d6 100644 --- a/rebase-interactive.h +++ b/rebase-interactive.h @@ -3,9 +3,11 @@ struct strbuf; struct repository; +struct todo_list; void append_todo_help(unsigned edit_todo, unsigned keep_empty, struct strbuf *buf); int edit_todo_list(struct repository *r, unsigned flags); +int todo_list_check(struct todo_list *old_todo, struct todo_list *new_todo); #endif diff --git a/sequencer.c b/sequencer.c index 4809b22ce4..99e12c751e 100644 --- a/sequencer.c +++ b/sequencer.c @@ -4660,112 +4660,37 @@ int transform_todo_file(struct repository *r, unsigned flags) return 0; } -enum missing_commit_check_level get_missing_commit_check_level(void) -{ - const char *value; - - if (git_config_get_value("rebase.missingcommitscheck", &value) || - !strcasecmp("ignore", value)) - return MISSING_COMMIT_CHECK_IGNORE; - if (!strcasecmp("warn", value)) - return MISSING_COMMIT_CHECK_WARN; - if (!strcasecmp("error", value)) - return MISSING_COMMIT_CHECK_ERROR; - warning(_("unrecognized setting %s for option " - "rebase.missingCommitsCheck. Ignoring."), value); - return MISSING_COMMIT_CHECK_IGNORE; -} +static const char edit_todo_list_advice[] = +N_("You can fix this with 'git rebase --edit-todo' " +"and then run 'git rebase --continue'.\n" +"Or you can abort the rebase with 'git rebase" +" --abort'.\n"); -define_commit_slab(commit_seen, unsigned char); -/* - * Check if the user dropped some commits by mistake - * Behaviour determined by rebase.missingCommitsCheck. - * Check if there is an unrecognized command or a - * bad SHA-1 in a command. - */ -int check_todo_list(struct repository *r) +int check_todo_list_from_file(struct repository *r) { - enum missing_commit_check_level check_level = get_missing_commit_check_level(); - struct strbuf todo_file = STRBUF_INIT; - struct todo_list todo_list = TODO_LIST_INIT; - struct strbuf missing = STRBUF_INIT; - int advise_to_edit_todo = 0, res = 0, i; - struct commit_seen commit_seen; - - init_commit_seen(&commit_seen); + struct todo_list old_todo = TODO_LIST_INIT, new_todo = TODO_LIST_INIT; + int res = 0; - strbuf_addstr(&todo_file, rebase_path_todo()); - if (strbuf_read_file_or_whine(&todo_list.buf, todo_file.buf) < 0) { + if (strbuf_read_file_or_whine(&new_todo.buf, rebase_path_todo()) < 0) { res = -1; - goto leave_check; - } - advise_to_edit_todo = res = - todo_list_parse_insn_buffer(r, todo_list.buf.buf, &todo_list); - - if (res || check_level == MISSING_COMMIT_CHECK_IGNORE) - goto leave_check; - - /* Mark the commits in git-rebase-todo as seen */ - for (i = 0; i < todo_list.nr; i++) { - struct commit *commit = todo_list.items[i].commit; - if (commit) - *commit_seen_at(&commit_seen, commit) = 1; + goto out; } - todo_list_release(&todo_list); - strbuf_addstr(&todo_file, ".backup"); - if (strbuf_read_file_or_whine(&todo_list.buf, todo_file.buf) < 0) { + if (strbuf_read_file_or_whine(&old_todo.buf, rebase_path_todo_backup()) < 0) { res = -1; - goto leave_check; - } - strbuf_release(&todo_file); - res = !!todo_list_parse_insn_buffer(r, todo_list.buf.buf, &todo_list); - - /* Find commits in git-rebase-todo.backup yet unseen */ - for (i = todo_list.nr - 1; i >= 0; i--) { - struct todo_item *item = todo_list.items + i; - struct commit *commit = item->commit; - if (commit && !*commit_seen_at(&commit_seen, commit)) { - strbuf_addf(&missing, " - %s %.*s\n", - short_commit_name(commit), - item->arg_len, - todo_item_get_arg(&todo_list, item)); - *commit_seen_at(&commit_seen, commit) = 1; - } + goto out; } - /* Warn about missing commits */ - if (!missing.len) - goto leave_check; - - if (check_level == MISSING_COMMIT_CHECK_ERROR) - advise_to_edit_todo = res = 1; - - fprintf(stderr, - _("Warning: some commits may have been dropped accidentally.\n" - "Dropped commits (newer to older):\n")); - - /* Make the list user-friendly and display */ - fputs(missing.buf, stderr); - strbuf_release(&missing); - - fprintf(stderr, _("To avoid this message, use \"drop\" to " - "explicitly remove a commit.\n\n" - "Use 'git config rebase.missingCommitsCheck' to change " - "the level of warnings.\n" - "The possible behaviours are: ignore, warn, error.\n\n")); - -leave_check: - clear_commit_seen(&commit_seen); - strbuf_release(&todo_file); - todo_list_release(&todo_list); - - if (advise_to_edit_todo) - fprintf(stderr, - _("You can fix this with 'git rebase --edit-todo' " - "and then run 'git rebase --continue'.\n" - "Or you can abort the rebase with 'git rebase" - " --abort'.\n")); + res = todo_list_parse_insn_buffer(r, old_todo.buf.buf, &old_todo); + if (!res) + res = todo_list_parse_insn_buffer(r, new_todo.buf.buf, &new_todo); + if (!res) + res = todo_list_check(&old_todo, &new_todo); + if (res) + fprintf(stderr, _(edit_todo_list_advice)); +out: + todo_list_release(&old_todo); + todo_list_release(&new_todo); return res; } @@ -4943,7 +4868,7 @@ int complete_action(struct repository *r, struct replay_opts *opts, unsigned fla todo_list_release(&todo_list); - if (check_todo_list(r)) { + if (check_todo_list_from_file(r)) { checkout_onto(opts, onto_name, onto, orig_head); return -1; } diff --git a/sequencer.h b/sequencer.h index 7278f9675b..217353e9f0 100644 --- a/sequencer.h +++ b/sequencer.h @@ -64,12 +64,6 @@ struct replay_opts { }; #define REPLAY_OPTS_INIT { .action = -1, .current_fixups = STRBUF_INIT } -enum missing_commit_check_level { - MISSING_COMMIT_CHECK_IGNORE = 0, - MISSING_COMMIT_CHECK_WARN, - MISSING_COMMIT_CHECK_ERROR -}; - int write_message(const void *buf, size_t len, const char *filename, int append_eol); @@ -154,8 +148,7 @@ int sequencer_make_script(struct repository *r, FILE *out, int argc, int sequencer_add_exec_commands(struct repository *r, const char *command); int transform_todo_file(struct repository *r, unsigned flags); -enum missing_commit_check_level get_missing_commit_check_level(void); -int check_todo_list(struct repository *r); +int check_todo_list_from_file(struct repository *r); int complete_action(struct repository *r, struct replay_opts *opts, unsigned flags, const char *shortrevisions, const char *onto_name, const char *onto, const char *orig_head, const char *cmd, -- 2.39.2