This is crucial to improve performance on Windows, as the speed is now
mostly dominated by the SHA-1 transformation (because it spawns a new
rev-parse process for *every* line, and spawning processes is pretty
slow from Git for Windows' MSYS2 Bash).
Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
builtin/rebase--helper.c | 10 +++++++-
git-rebase--interactive.sh | 27 ++--------------------
sequencer.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++
sequencer.h | 2 ++
4 files changed, 70 insertions(+), 26 deletions(-)
diff --git a/builtin/rebase--helper.c b/builtin/rebase--helper.c
index 821058d452d..9444c8d6c60 100644
--- a/builtin/rebase--helper.c
+++ b/builtin/rebase--helper.c
@@ -13,7 +13,7 @@ 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
+ CONTINUE = 1, ABORT, MAKE_SCRIPT, SHORTEN_SHA1S, EXPAND_SHA1S
} command = 0;
struct option options[] = {
OPT_BOOL(0, "ff", &opts.allow_ff, N_("allow fast-forward")),
@@ -24,6 +24,10 @@ int cmd_rebase__helper(int argc, const char **argv, const char *prefix)
ABORT),
OPT_CMDMODE(0, "make-script", &command,
N_("make rebase script"), MAKE_SCRIPT),
+ OPT_CMDMODE(0, "shorten-sha1s", &command,
+ N_("shorten SHA-1s in the todo list"), SHORTEN_SHA1S),
+ OPT_CMDMODE(0, "expand-sha1s", &command,
+ N_("expand SHA-1s in the todo list"), EXPAND_SHA1S),
OPT_END()
};
@@ -42,5 +46,9 @@ int cmd_rebase__helper(int argc, const char **argv, const char *prefix)
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);
usage_with_options(builtin_rebase_helper_usage, options);
}
diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh
index 214af0372ba..82a1941c42c 100644
--- a/git-rebase--interactive.sh
+++ b/git-rebase--interactive.sh
@@ -750,35 +750,12 @@ skip_unnecessary_picks () {
die "$(gettext "Could not skip unnecessary pick commands")"
}
-transform_todo_ids () {
- while read -r command rest
- do
- case "$command" in
- "$comment_char"* | exec)
- # Be careful for oddball commands like 'exec'
- # that do not have a SHA-1 at the beginning of $rest.
- ;;
- *)
- sha1=$(git rev-parse --verify --quiet "$@" ${rest%%[ ]*}) &&
- if test "a$rest" = "a${rest#*[ ]}"
- then
- rest=$sha1
- else
- rest="$sha1 ${rest#*[ ]}"
- fi
- ;;
- esac
- printf '%s\n' "$command${rest:+ }$rest"
- done <"$todo" >"$todo.new" &&
- mv -f "$todo.new" "$todo"
-}
-
expand_todo_ids() {
- transform_todo_ids
+ git rebase--helper --expand-sha1s
}
collapse_todo_ids() {
- transform_todo_ids --short
+ git rebase--helper --shorten-sha1s
}
# Rearrange the todo list that has both "pick sha1 msg" and
diff --git a/sequencer.c b/sequencer.c
index 88819a1a2a9..201d45b1677 100644
--- a/sequencer.c
+++ b/sequencer.c
@@ -2437,3 +2437,60 @@ int sequencer_make_script(int keep_empty, FILE *out,
strbuf_release(&buf);
return 0;
}
+
+
+int transform_todo_ids(int shorten_sha1s)
+{
+ const char *todo_file = rebase_path_todo();
+ struct todo_list todo_list = TODO_LIST_INIT;
+ int fd, res, i;
+ FILE *out;
+
+ strbuf_reset(&todo_list.buf);
+ fd = open(todo_file, O_RDONLY);
+ if (fd < 0)
+ return error_errno(_("could not open '%s'"), todo_file);
+ if (strbuf_read(&todo_list.buf, fd, 0) < 0) {
+ close(fd);
+ return error(_("could not read '%s'."), todo_file);
+ }
+ close(fd);
+
+ res = parse_insn_buffer(todo_list.buf.buf, &todo_list);
+ if (res) {
+ todo_list_release(&todo_list);
+ return error(_("unusable instruction sheet: '%s'"), todo_file);
+ }
+
+ out = fopen(todo_file, "w");
+ if (!out) {
+ todo_list_release(&todo_list);
+ return error(_("unable to open '%s' for writing"), todo_file);
+ }
+ for (i = 0; i < todo_list.nr; i++) {
+ struct todo_item *item = todo_list.items + i;
+ int bol = item->offset_in_buf;
+ const char *p = todo_list.buf.buf + bol;
+ int eol = i + 1 < todo_list.nr ?
+ todo_list.items[i + 1].offset_in_buf :
+ todo_list.buf.len;
+
+ if (item->command >= TODO_EXEC && item->command != TODO_DROP)
+ fwrite(p, eol - bol, 1, out);
+ else {
+ const char *sha1 = shorten_sha1s ?
+ short_commit_name(item->commit) :
+ oid_to_hex(&item->commit->object.oid);
+ int len;
+
+ p += strspn(p, " \t"); /* left-trim command */
+ len = strcspn(p, " \t"); /* length of command */
+
+ fprintf(out, "%.*s %s %.*s\n",
+ len, p, sha1, item->arg_len, item->arg);
+ }
+ }
+ fclose(out);
+ todo_list_release(&todo_list);
+ return 0;
+}
diff --git a/sequencer.h b/sequencer.h
index 83f2943b7a9..47a81034e76 100644
--- a/sequencer.h
+++ b/sequencer.h
@@ -48,6 +48,8 @@ int sequencer_remove_state(struct replay_opts *opts);
int sequencer_make_script(int keep_empty, FILE *out,
int argc, const char **argv);
+int transform_todo_ids(int shorten_sha1s);
+
extern const char sign_off_header[];
void append_signoff(struct strbuf *msgbuf, int ignore_footer, unsigned flag);
--
2.12.2.windows.2.800.gede8f145e06