gpg-interface: refactor 'enum sign_mode' parsing

The definition of 'enum sign_mode' as well as its parsing code are in
"builtin/fast-export.c". This was fine because `git fast-export` was the
only command with '--signed-tags=<mode>' or '--signed-commits=<mode>'
options.

In a following commit, we are going to add a similar option to `git
fast-import`, which will be simpler, easier and cleaner if we can reuse
the 'enum sign_mode' defintion and parsing code.

So let's move that definition and parsing code from
"builtin/fast-export.c" to "gpg-interface.{c,h}".

While at it, let's fix a small indentation issue with the arguments of
parse_opt_sign_mode().

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 5 insertions, 14 deletions

diff --git a/builtin/fast-export.c b/builtin/fast-export.c
index c06ee0b213..dc2486f9a8 100644
--- a/builtin/fast-export.c
+++ b/builtin/fast-export.c
@@ -37,8 +37,6 @@ static const char *const fast_export_usage[] = {
 	NULL
 };
 
-enum sign_mode { SIGN_ABORT, SIGN_VERBATIM, SIGN_STRIP, SIGN_WARN_VERBATIM, SIGN_WARN_STRIP };
-
 static int progress;
 static enum sign_mode signed_tag_mode = SIGN_ABORT;
 static enum sign_mode signed_commit_mode = SIGN_STRIP;
@@ -59,23 +57,16 @@ static struct hashmap anonymized_seeds;
 static struct revision_sources revision_sources;
 
 static int parse_opt_sign_mode(const struct option *opt,
-				     const char *arg, int unset)
+			       const char *arg, int unset)
 {
 	enum sign_mode *val = opt->value;
+
 	if (unset)
 		return 0;
-	else if (!strcmp(arg, "abort"))
-		*val = SIGN_ABORT;
-	else if (!strcmp(arg, "verbatim") || !strcmp(arg, "ignore"))
-		*val = SIGN_VERBATIM;
-	else if (!strcmp(arg, "warn-verbatim") || !strcmp(arg, "warn"))
-		*val = SIGN_WARN_VERBATIM;
-	else if (!strcmp(arg, "warn-strip"))
-		*val = SIGN_WARN_STRIP;
-	else if (!strcmp(arg, "strip"))
-		*val = SIGN_STRIP;
-	else
+
+	if (parse_sign_mode(arg, val))
 		return error("Unknown %s mode: %s", opt->long_name, arg);
+
 	return 0;
 }