mirror of
https://github.com/git/git
synced 2024-07-17 11:07:55 +00:00
c44a4c650c
This operation has quadratic complexity, which is especially painful on Windows, where shell scripts are *already* slow (mainly due to the overhead of the POSIX emulation layer). Let's reimplement this with linear complexity (using a hash map to match the commits' subject lines) for the common case; Sadly, the fixup/squash feature's design neglected performance considerations, allowing arbitrary prefixes (read: `fixup! hell` will match the commit subject `hello world`), which means that we are stuck with quadratic performance in the worst case. The reimplemented logic also happens to fix a bug where commented-out lines (representing empty patches) were dropped by the previous code. While at it, clarify how the fixup/squash feature works in `git rebase -i`'s man page. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
69 lines
2.3 KiB
C
69 lines
2.3 KiB
C
#include "builtin.h"
|
|
#include "cache.h"
|
|
#include "config.h"
|
|
#include "parse-options.h"
|
|
#include "sequencer.h"
|
|
|
|
static const char * const builtin_rebase_helper_usage[] = {
|
|
N_("git rebase--helper [<options>]"),
|
|
NULL
|
|
};
|
|
|
|
int cmd_rebase__helper(int argc, const char **argv, const char *prefix)
|
|
{
|
|
struct replay_opts opts = REPLAY_OPTS_INIT;
|
|
int keep_empty = 0;
|
|
enum {
|
|
CONTINUE = 1, ABORT, MAKE_SCRIPT, SHORTEN_SHA1S, EXPAND_SHA1S,
|
|
CHECK_TODO_LIST, SKIP_UNNECESSARY_PICKS, REARRANGE_SQUASH
|
|
} command = 0;
|
|
struct option options[] = {
|
|
OPT_BOOL(0, "ff", &opts.allow_ff, N_("allow fast-forward")),
|
|
OPT_BOOL(0, "keep-empty", &keep_empty, N_("keep empty commits")),
|
|
OPT_CMDMODE(0, "continue", &command, N_("continue rebase"),
|
|
CONTINUE),
|
|
OPT_CMDMODE(0, "abort", &command, N_("abort rebase"),
|
|
ABORT),
|
|
OPT_CMDMODE(0, "make-script", &command,
|
|
N_("make rebase script"), MAKE_SCRIPT),
|
|
OPT_CMDMODE(0, "shorten-ids", &command,
|
|
N_("shorten SHA-1s in the todo list"), SHORTEN_SHA1S),
|
|
OPT_CMDMODE(0, "expand-ids", &command,
|
|
N_("expand SHA-1s in the todo list"), EXPAND_SHA1S),
|
|
OPT_CMDMODE(0, "check-todo-list", &command,
|
|
N_("check the todo list"), CHECK_TODO_LIST),
|
|
OPT_CMDMODE(0, "skip-unnecessary-picks", &command,
|
|
N_("skip unnecessary picks"), SKIP_UNNECESSARY_PICKS),
|
|
OPT_CMDMODE(0, "rearrange-squash", &command,
|
|
N_("rearrange fixup/squash lines"), REARRANGE_SQUASH),
|
|
OPT_END()
|
|
};
|
|
|
|
git_config(git_default_config, NULL);
|
|
|
|
opts.action = REPLAY_INTERACTIVE_REBASE;
|
|
opts.allow_ff = 1;
|
|
opts.allow_empty = 1;
|
|
|
|
argc = parse_options(argc, argv, NULL, options,
|
|
builtin_rebase_helper_usage, PARSE_OPT_KEEP_ARGV0);
|
|
|
|
if (command == CONTINUE && argc == 1)
|
|
return !!sequencer_continue(&opts);
|
|
if (command == ABORT && argc == 1)
|
|
return !!sequencer_remove_state(&opts);
|
|
if (command == MAKE_SCRIPT && argc > 1)
|
|
return !!sequencer_make_script(keep_empty, stdout, argc, argv);
|
|
if (command == SHORTEN_SHA1S && argc == 1)
|
|
return !!transform_todo_ids(1);
|
|
if (command == EXPAND_SHA1S && argc == 1)
|
|
return !!transform_todo_ids(0);
|
|
if (command == CHECK_TODO_LIST && argc == 1)
|
|
return !!check_todo_list();
|
|
if (command == SKIP_UNNECESSARY_PICKS && argc == 1)
|
|
return !!skip_unnecessary_picks();
|
|
if (command == REARRANGE_SQUASH && argc == 1)
|
|
return !!rearrange_squash();
|
|
usage_with_options(builtin_rebase_helper_usage, options);
|
|
}
|