From 2c58483a5983d1313f674e2ba32b3bac24df6911 Mon Sep 17 00:00:00 2001 From: Alban Gruin Date: Fri, 10 Aug 2018 18:51:33 +0200 Subject: [PATCH] rebase -i: rewrite setup_reflog_action() in C MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This rewrites (the misnamed) setup_reflog_action() from shell to C. The new version is called prepare_branch_to_be_rebased(). A new command is added to rebase--helper.c, “checkout-base”, as well as a new flag, “verbose”, to avoid silencing the output of the checkout operation called by checkout_base_commit(). The function `run_git_checkout()` will also be used in the next commit, therefore its code is not part of `checkout_base_commit()`. The shell version is then stripped in favour of a call to the helper. As $GIT_REFLOG_ACTION is no longer set at the first call of checkout_onto(), a call to comment_for_reflog() is added at the beginning of this function. Signed-off-by: Alban Gruin Signed-off-by: Junio C Hamano --- builtin/rebase--helper.c | 7 ++++++- git-rebase--interactive.sh | 16 ++-------------- sequencer.c | 30 ++++++++++++++++++++++++++++++ sequencer.h | 2 ++ 4 files changed, 40 insertions(+), 15 deletions(-) diff --git a/builtin/rebase--helper.c b/builtin/rebase--helper.c index 731a64971d..0e76dadba6 100644 --- a/builtin/rebase--helper.c +++ b/builtin/rebase--helper.c @@ -18,7 +18,7 @@ int cmd_rebase__helper(int argc, const char **argv, const char *prefix) enum { CONTINUE = 1, ABORT, MAKE_SCRIPT, SHORTEN_OIDS, EXPAND_OIDS, CHECK_TODO_LIST, SKIP_UNNECESSARY_PICKS, REARRANGE_SQUASH, - ADD_EXEC, APPEND_TODO_HELP, EDIT_TODO + ADD_EXEC, APPEND_TODO_HELP, EDIT_TODO, PREPARE_BRANCH } command = 0; struct option options[] = { OPT_BOOL(0, "ff", &opts.allow_ff, N_("allow fast-forward")), @@ -28,6 +28,7 @@ int cmd_rebase__helper(int argc, const char **argv, const char *prefix) OPT_BOOL(0, "rebase-merges", &rebase_merges, N_("rebase merge commits")), OPT_BOOL(0, "rebase-cousins", &rebase_cousins, N_("keep original branch points of cousins")), + OPT__VERBOSE(&opts.verbose, N_("be verbose")), OPT_CMDMODE(0, "continue", &command, N_("continue rebase"), CONTINUE), OPT_CMDMODE(0, "abort", &command, N_("abort rebase"), @@ -51,6 +52,8 @@ int cmd_rebase__helper(int argc, const char **argv, const char *prefix) OPT_CMDMODE(0, "edit-todo", &command, N_("edit the todo list during an interactive rebase"), EDIT_TODO), + OPT_CMDMODE(0, "prepare-branch", &command, + N_("prepare the branch to be rebased"), PREPARE_BRANCH), OPT_END() }; @@ -94,5 +97,7 @@ int cmd_rebase__helper(int argc, const char **argv, const char *prefix) return !!append_todo_help(0, keep_empty); if (command == EDIT_TODO && argc == 1) return !!edit_todo_list(flags); + if (command == PREPARE_BRANCH && argc == 2) + return !!prepare_branch_to_be_rebased(&opts, argv[1]); usage_with_options(builtin_rebase_helper_usage, options); } diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh index 2defe607f4..77e972bb6c 100644 --- a/git-rebase--interactive.sh +++ b/git-rebase--interactive.sh @@ -72,6 +72,7 @@ collapse_todo_ids() { # Switch to the branch in $into and notify it in the reflog checkout_onto () { + comment_for_reflog start GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $onto_name" output git checkout $onto || die_abort "$(gettext "could not detach HEAD")" git update-ref ORIG_HEAD $orig_head @@ -119,19 +120,6 @@ initiate_action () { esac } -setup_reflog_action () { - comment_for_reflog start - - if test ! -z "$switch_to" - then - GIT_REFLOG_ACTION="$GIT_REFLOG_ACTION: checkout $switch_to" - output git checkout "$switch_to" -- || - die "$(eval_gettext "Could not checkout \$switch_to")" - - comment_for_reflog start - fi -} - init_basic_state () { orig_head=$(git rev-parse --verify HEAD) || die "$(gettext "No HEAD?")" mkdir -p "$state_dir" || die "$(eval_gettext "Could not create temporary \$state_dir")" @@ -211,7 +199,7 @@ git_rebase__interactive () { return 0 fi - setup_reflog_action + git rebase--helper --prepare-branch "$switch_to" ${verbose:+--verbose} init_basic_state init_revisions_and_shortrevisions diff --git a/sequencer.c b/sequencer.c index 960a935444..e48b37bc0e 100644 --- a/sequencer.c +++ b/sequencer.c @@ -3139,6 +3139,36 @@ static const char *reflog_message(struct replay_opts *opts, return buf.buf; } +static int run_git_checkout(struct replay_opts *opts, const char *commit, + const char *action) +{ + struct child_process cmd = CHILD_PROCESS_INIT; + + cmd.git_cmd = 1; + + argv_array_push(&cmd.args, "checkout"); + argv_array_push(&cmd.args, commit); + argv_array_pushf(&cmd.env_array, GIT_REFLOG_ACTION "=%s", action); + + if (opts->verbose) + return run_command(&cmd); + else + return run_command_silent_on_success(&cmd); +} + +int prepare_branch_to_be_rebased(struct replay_opts *opts, const char *commit) +{ + const char *action; + + if (commit && *commit) { + action = reflog_message(opts, "start", "checkout %s", commit); + if (run_git_checkout(opts, commit, action)) + return error(_("could not checkout %s"), commit); + } + + return 0; +} + static const char rescheduled_advice[] = N_("Could not execute the todo command\n" "\n" diff --git a/sequencer.h b/sequencer.h index 792e448b67..f619b02a13 100644 --- a/sequencer.h +++ b/sequencer.h @@ -109,6 +109,8 @@ int update_head_with_reflog(const struct commit *old_head, void commit_post_rewrite(const struct commit *current_head, const struct object_id *new_head); +int prepare_branch_to_be_rebased(struct replay_opts *opts, const char *commit); + #define SUMMARY_INITIAL_COMMIT (1 << 0) #define SUMMARY_SHOW_AUTHOR_DATE (1 << 1) void print_commit_summary(const char *prefix, const struct object_id *oid,