diff options
Diffstat (limited to 'rebase-interactive.c')
| -rw-r--r-- | rebase-interactive.c | 146 |
1 files changed, 122 insertions, 24 deletions
diff --git a/rebase-interactive.c b/rebase-interactive.c index 78f3263fc1..aa18ae82b7 100644 --- a/rebase-interactive.c +++ b/rebase-interactive.c @@ -1,10 +1,35 @@ #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, +void append_todo_help(unsigned keep_empty, int command_count, + const char *shortrevisions, const char *shortonto, struct strbuf *buf) { const char *msg = _("\nCommands:\n" @@ -24,6 +49,15 @@ void append_todo_help(unsigned edit_todo, unsigned keep_empty, ". specified). Use -c <commit> to reword the commit message.\n" "\n" "These lines can be re-ordered; they are executed from top to bottom.\n"); + unsigned edit_todo = !(shortrevisions && shortonto); + + if (!edit_todo) { + strbuf_addch(buf, '\n'); + strbuf_commented_addf(buf, Q_("Rebase %s onto %s (%d command)", + "Rebase %s onto %s (%d commands)", + command_count), + shortrevisions, shortonto, command_count); + } strbuf_add_commented_lines(buf, msg, strlen(msg)); @@ -53,39 +87,103 @@ void append_todo_help(unsigned edit_todo, unsigned keep_empty, } } -int edit_todo_list(unsigned flags) +int edit_todo_list(struct repository *r, struct todo_list *todo_list, + struct todo_list *new_todo, const char *shortrevisions, + const char *shortonto, unsigned flags) { - struct strbuf buf = STRBUF_INIT; const char *todo_file = rebase_path_todo(); + unsigned initial = shortrevisions && shortonto; - if (strbuf_read_file(&buf, todo_file, 0) < 0) - return error_errno(_("could not read '%s'."), todo_file); + /* If the user is editing the todo list, we first try to parse + * it. If there is an error, we do not return, because the user + * might want to fix it in the first place. */ + if (!initial) + todo_list_parse_insn_buffer(r, todo_list->buf.buf, todo_list); - strbuf_stripspace(&buf, 1); - if (write_message(buf.buf, buf.len, todo_file, 0)) { - strbuf_release(&buf); - return -1; - } + if (todo_list_write_to_file(r, todo_list, todo_file, shortrevisions, shortonto, + -1, flags | TODO_LIST_SHORTEN_IDS | TODO_LIST_APPEND_TODO_HELP)) + return error_errno(_("could not write '%s'"), todo_file); + + if (initial && copy_file(rebase_path_todo_backup(), todo_file, 0666)) + return error(_("could not copy '%s' to '%s'."), todo_file, + rebase_path_todo_backup()); - strbuf_release(&buf); + if (launch_sequence_editor(todo_file, &new_todo->buf, NULL)) + return -2; - transform_todos(flags | TODO_LIST_SHORTEN_IDS); + strbuf_stripspace(&new_todo->buf, 1); + if (initial && new_todo->buf.len == 0) + return -3; - if (strbuf_read_file(&buf, todo_file, 0) < 0) - return error_errno(_("could not read '%s'."), todo_file); + /* For the initial edit, the todo list gets parsed in + * complete_action(). */ + if (!initial) + return todo_list_parse_insn_buffer(r, new_todo->buf.buf, new_todo); - append_todo_help(1, 0, &buf); - if (write_message(buf.buf, buf.len, todo_file, 0)) { - strbuf_release(&buf); - return -1; + 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; } - strbuf_release(&buf); + /* 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; + } + } - if (launch_sequence_editor(todo_file, NULL, NULL)) - return -1; + /* Warn about missing commits */ + if (!missing.len) + goto leave_check; - transform_todos(flags & ~(TODO_LIST_SHORTEN_IDS)); + if (check_level == MISSING_COMMIT_CHECK_ERROR) + res = 1; - return 0; + 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; } |