ref-filter: provide a function for parsing sort options

The ref-filter module currently provides a callback suitable
for parsing command-line --sort options. But since git-tag
also supports the tag.sort config option, it needs a
function whose implementation is quite similar, but with a
slightly different interface. The end result is that
builtin/tag.c has a copy-paste of parse_opt_ref_sorting().

Instead, let's provide a function to parse an arbitrary
sort string, which we can then trivially wrap to make the
parse_opt variant.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 1 insertions, 25 deletions

diff --git a/builtin/tag.c b/builtin/tag.c
index 207c9eb035..66e35b823b 100644
--- a/builtin/tag.c
+++ b/builtin/tag.c
@@ -136,30 +136,6 @@ static const char tag_template_nocleanup[] =
 	"Lines starting with '%c' will be kept; you may remove them"
 	" yourself if you want to.\n");
 
-/* Parse arg given and add it the ref_sorting array */
-static int parse_sorting_string(const char *arg, struct ref_sorting **sorting_tail)
-{
-	struct ref_sorting *s;
-	int len;
-
-	s = xcalloc(1, sizeof(*s));
-	s->next = *sorting_tail;
-	*sorting_tail = s;
-
-	if (*arg == '-') {
-		s->reverse = 1;
-		arg++;
-	}
-	if (skip_prefix(arg, "version:", &arg) ||
-	    skip_prefix(arg, "v:", &arg))
-		s->version = 1;
-
-	len = strlen(arg);
-	s->atom = parse_ref_filter_atom(arg, arg+len);
-
-	return 0;
-}
-
 static int git_tag_config(const char *var, const char *value, void *cb)
 {
 	int status;
@@ -168,7 +144,7 @@ static int git_tag_config(const char *var, const char *value, void *cb)
 	if (!strcmp(var, "tag.sort")) {
 		if (!value)
 			return config_error_nonbool(var);
-		parse_sorting_string(value, sorting_tail);
+		parse_ref_sorting(sorting_tail, value);
 		return 0;
 	}