[PATCH 12/18] revert: Make pick_commits functionally act on a commit list
From: Ramkumar Ramachandra <hidden>
Date: 2016-06-15 22:51:40
Subsystem:
the rest · Maintainer:
Linus Torvalds
Apart from its central objective of calling into the picking
mechanism, pick_commits creates a sequencer directory, prepares a todo
list, and even acts upon the "--reset" subcommand. This makes for a
bad API since the central worry of callers is to figure out whether or
not any conflicts were encountered during the cherry picking. The
current API is like:
if (pick_commits(opts) < 0)
print "Something failed, we're not sure what"
So, change pick_commits so that it's only responsible for picking
commits in a loop and reporting any errors, leaving the rest to a new
function called pick_revisions. Consequently, the API of pick_commits
becomes much clearer:
act_on_subcommand(opts->subcommand);
todo_list = prepare_todo_list();
if (pick_commits(todo_list, opts) < 0)
print "Error encountered while picking commits"
Now, callers can easily call-in to the cherry-picking machinery by
constructing an arbitrary todo list along with some options.
Signed-off-by: Ramkumar Ramachandra <redacted>
Signed-off-by: Jonathan Nieder <redacted>
---
builtin/revert.c | 45 ++++++++++++++++++++++++++++++---------------
1 files changed, 30 insertions(+), 15 deletions(-)
diff --git a/builtin/revert.c b/builtin/revert.c
index f561f33..14259db 100644
--- a/builtin/revert.c
+++ b/builtin/revert.c@@ -729,11 +729,9 @@ static void save_opts(struct replay_opts *opts) strbuf_release(&buf); } -static int pick_commits(struct replay_opts *opts) +static int pick_commits(struct commit_list *todo_list, struct replay_opts *opts) { - struct commit_list *todo_list = NULL; struct strbuf buf = STRBUF_INIT; - unsigned char sha1[20]; struct commit_list *cur; int res;
@@ -743,16 +741,6 @@ static int pick_commits(struct replay_opts *opts) opts->record_origin || opts->edit)); read_and_refresh_cache(opts); - walk_revs_populate_todo(&todo_list, opts); - create_seq_dir(); - if (get_sha1("HEAD", sha1)) { - if (opts->action == REVERT) - die(_("Can't revert as initial commit")); - die(_("Can't cherry-pick into empty head")); - } - save_head(sha1_to_hex(sha1)); - save_opts(opts); - for (cur = todo_list; cur; cur = cur->next) { save_todo(cur, opts); res = do_pick_commit(cur->item, opts);
@@ -770,6 +758,27 @@ static int pick_commits(struct replay_opts *opts) return 0; } +static int pick_revisions(struct replay_opts *opts) +{ + struct commit_list *todo_list = NULL; + unsigned char sha1[20]; + + read_and_refresh_cache(opts); + + walk_revs_populate_todo(&todo_list, opts); + create_seq_dir(); + if (get_sha1("HEAD", sha1)) { + if (opts->action == REVERT) + die(_("Can't revert as initial commit")); + die(_("Can't cherry-pick into empty head")); + } else + save_head(sha1_to_hex(sha1)); + save_opts(opts); + save_todo(todo_list, opts); + + return pick_commits(todo_list, opts); +} + int cmd_revert(int argc, const char **argv, const char *prefix) { struct replay_opts opts;
@@ -780,7 +789,13 @@ int cmd_revert(int argc, const char **argv, const char *prefix) opts.action = REVERT; git_config(git_default_config, NULL); parse_args(argc, argv, &opts); - return pick_commits(&opts); + + /* + * Decide what to do depending on the arguments; a fresh + * cherry-pick should be handled differently from an existing + * one that is being continued + */ + return pick_revisions(&opts); } int cmd_cherry_pick(int argc, const char **argv, const char *prefix)
@@ -791,5 +806,5 @@ int cmd_cherry_pick(int argc, const char **argv, const char *prefix) opts.action = CHERRY_PICK; git_config(git_default_config, NULL); parse_args(argc, argv, &opts); - return pick_commits(&opts); + return pick_revisions(&opts); }
--
1.7.4.rc1.7.g2cf08.dirty