git/rebase-interactive.c
Elijah Newren d1cbe1e6d8 hash-ll.h: split out of hash.h to remove dependency on repository.h
hash.h depends upon and includes repository.h, due to the definition and
use of the_hash_algo (defined as the_repository->hash_algo).  However,
most headers trying to include hash.h are only interested in the layout
of the structs like object_id.  Move the parts of hash.h that do not
depend upon repository.h into a new file hash-ll.h (the "low level"
parts of hash.h), and adjust other files to use this new header where
the convenience inline functions aren't needed.

This allows hash.h and object.h to be fairly small, minimal headers.  It
also exposes a lot of hidden dependencies on both path.h (which was
brought in by repository.h) and repository.h (which was previously
implicitly brought in by object.h), so also adjust other files to be
more explicit about what they depend upon.

Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2023-04-24 12:47:32 -07:00

244 lines
7.8 KiB
C

#include "git-compat-util.h"
#include "commit.h"
#include "editor.h"
#include "environment.h"
#include "gettext.h"
#include "sequencer.h"
#include "rebase-interactive.h"
#include "repository.h"
#include "strbuf.h"
#include "commit-slab.h"
#include "config.h"
#include "dir.h"
#include "object-name.h"
#include "wrapper.h"
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");
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(int command_count,
const char *shortrevisions, const char *shortonto,
struct strbuf *buf)
{
const char *msg = _("\nCommands:\n"
"p, pick <commit> = use commit\n"
"r, reword <commit> = use commit, but edit the commit message\n"
"e, edit <commit> = use commit, but stop for amending\n"
"s, squash <commit> = use commit, but meld into previous commit\n"
"f, fixup [-C | -c] <commit> = like \"squash\" but keep only the previous\n"
" commit's log message, unless -C is used, in which case\n"
" keep only this commit's message; -c is same as -C but\n"
" opens the editor\n"
"x, exec <command> = run command (the rest of the line) using shell\n"
"b, break = stop here (continue rebase later with 'git rebase --continue')\n"
"d, drop <commit> = remove commit\n"
"l, label <label> = label current HEAD with a name\n"
"t, reset <label> = reset HEAD to a label\n"
"m, merge [-C <commit> | -c <commit>] <label> [# <oneline>]\n"
" create a merge commit using the original merge commit's\n"
" message (or the oneline, if no original merge commit was\n"
" specified); use -c <commit> to reword the commit message\n"
"u, update-ref <ref> = track a placeholder for the <ref> to be updated\n"
" to this position in the new commits. The <ref> is\n"
" updated at the end of the rebase\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));
if (get_missing_commit_check_level() == MISSING_COMMIT_CHECK_ERROR)
msg = _("\nDo not remove any line. Use 'drop' "
"explicitly to remove a commit.\n");
else
msg = _("\nIf you remove a line here "
"THAT COMMIT WILL BE LOST.\n");
strbuf_add_commented_lines(buf, msg, strlen(msg));
if (edit_todo)
msg = _("\nYou are editing the todo file "
"of an ongoing interactive rebase.\n"
"To continue rebase after editing, run:\n"
" git rebase --continue\n\n");
else
msg = _("\nHowever, if you remove everything, "
"the rebase will be aborted.\n\n");
strbuf_add_commented_lines(buf, msg, strlen(msg));
}
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)
{
const char *todo_file = rebase_path_todo(),
*todo_backup = rebase_path_todo_backup();
unsigned initial = shortrevisions && shortonto;
int incorrect = 0;
/* 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)
incorrect = todo_list_parse_insn_buffer(r, todo_list->buf.buf, todo_list) |
file_exists(rebase_path_dropped());
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 (!incorrect &&
todo_list_write_to_file(r, todo_list, todo_backup,
shortrevisions, shortonto, -1,
(flags | TODO_LIST_APPEND_TODO_HELP) & ~TODO_LIST_SHORTEN_IDS) < 0)
return error(_("could not write '%s'."), rebase_path_todo_backup());
if (launch_sequence_editor(todo_file, &new_todo->buf, NULL))
return -2;
strbuf_stripspace(&new_todo->buf, 1);
if (initial && new_todo->buf.len == 0)
return -3;
if (todo_list_parse_insn_buffer(r, new_todo->buf.buf, new_todo)) {
fprintf(stderr, _(edit_todo_list_advice));
return -4;
}
if (incorrect) {
if (todo_list_check_against_backup(r, new_todo)) {
write_file(rebase_path_dropped(), "%s", "");
return -4;
}
if (incorrect > 0)
unlink(rebase_path_dropped());
} else if (todo_list_check(todo_list, new_todo)) {
write_file(rebase_path_dropped(), "%s", "");
return -4;
}
/*
* See if branches need to be added or removed from the update-refs
* file based on the new todo list.
*/
todo_list_filter_update_refs(r, new_todo);
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",
repo_find_unique_abbrev(the_repository, &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"));
fprintf(stderr, _(edit_todo_list_advice));
leave_check:
clear_commit_seen(&commit_seen);
return res;
}
int todo_list_check_against_backup(struct repository *r, struct todo_list *todo_list)
{
struct todo_list backup = TODO_LIST_INIT;
int res = 0;
if (strbuf_read_file(&backup.buf, rebase_path_todo_backup(), 0) > 0) {
todo_list_parse_insn_buffer(r, backup.buf.buf, &backup);
res = todo_list_check(&backup, todo_list);
}
todo_list_release(&backup);
return res;
}