revert: Separate cmdline parsing from functional code

Currently, revert_or_cherry_pick sets up a default git config, parses command-line arguments, before preparing to pick commits. This makes for a bad API as the central worry of callers is to assert whether or not a conflict occured while cherry picking. The current API is like: if (revert_or_cherry_pick(argc, argv, opts) < 0) print "Something failed, we're not sure what" Simplify and rename revert_or_cherry_pick to pick_commits so that it only has the responsibility of setting up the revision walker and picking commits in a loop. Transfer the remaining work to its callers. Now, the API is simplified as: if (parse_args(argc, argv, opts) < 0) print "Can't parse arguments" if (pick_commits(opts) < 0) print "Error encountered in picking machinery" Later in the series, pick_commits will also serve as the starting point for continuing a cherry-pick or revert. Inspired-by: Christian Couder <chriscool@tuxfamily.org> Helped-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Ramkumar Ramachandra <artagnon@gmail.com> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Ramkumar Ramachandra committed Aug 4, 2011 at 16:09 UTC 89641472aafc28469448688a4ba610cf082921fa
1 file changed +7 -7
builtin/revert.c
+7 -7
@@ -563,16 +563,12 @@ static void read_and_refresh_cache(struct replay_opts *opts)
563 rollback_lock_file(&index_lock);
564 }
565
566 -static int revert_or_cherry_pick(int argc, const char **argv,
567 - struct replay_opts *opts)
566 +static int pick_commits(struct replay_opts *opts)
567 {
568 struct rev_info revs;
569 struct commit *commit;
570
572 - git_config(git_default_config, NULL);
571 setenv(GIT_REFLOG_ACTION, action_name(opts), 0);
574 - parse_args(argc, argv, opts);
575 -
572 if (opts->allow_ff) {
573 if (opts->signoff)
574 die(_("cherry-pick --ff cannot be used with --signoff"));
@@ -605,7 +601,9 @@ int cmd_revert(int argc, const char **argv, const char *prefix)
601 if (isatty(0))
602 opts.edit = 1;
603 opts.action = REVERT;
608 - return revert_or_cherry_pick(argc, argv, &opts);
604 + git_config(git_default_config, NULL);
605 + parse_args(argc, argv, &opts);
606 + return pick_commits(&opts);
607 }
608
609 int cmd_cherry_pick(int argc, const char **argv, const char *prefix)
@@ -614,5 +612,7 @@ int cmd_cherry_pick(int argc, const char **argv, const char *prefix)
612
613 memset(&opts, 0, sizeof(opts));
614 opts.action = CHERRY_PICK;
617 - return revert_or_cherry_pick(argc, argv, &opts);
615 + git_config(git_default_config, NULL);
616 + parse_args(argc, argv, &opts);
617 + return pick_commits(&opts);
618 }