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.
Helped-by: Jonathan Nieder <jrnider@xxxxxxxxx>
Signed-off-by: Ramkumar Ramachandra <artagnon@xxxxxxxxx>
---
builtin/revert.c | 46 ++++++++++++++++++++++++++++++----------------
1 files changed, 30 insertions(+), 16 deletions(-)
diff --git a/builtin/revert.c b/builtin/revert.c
index a8ac5a1..b648448 100644
--- a/builtin/revert.c
+++ b/builtin/revert.c
@@ -851,11 +851,9 @@ 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;
@@ -865,17 +863,6 @@ 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)
- return error(_("Can't revert as initial commit"));
- return error(_("Can't cherry-pick into empty head"));
- } else
- save_head(sha1_to_hex(sha1));
- save_opts(opts);
- save_todo(todo_list, opts);
-
for (cur = todo_list; cur; cur = cur->next) {
save_todo(cur, opts);
res = do_pick_commit(cur->item, opts);
@@ -892,6 +879,27 @@ 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)
+ return error(_("Can't revert as initial commit"));
+ return error(_("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)
{
int res;
@@ -903,7 +911,13 @@ 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);
- res = 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
+ */
+ res = pick_revisions(&opts);
if (res < 0)
die(_("revert failed"));
return res;
@@ -918,7 +932,7 @@ 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);
- res = pick_commits(&opts);
+ res = pick_revisions(&opts);
if (res < 0)
die(_("cherry-pick failed"));
return res;
--
1.7.4.rc1.7.g2cf08.dirty
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