[PATCH 1/3] builtin/fetch: factor submodule recurse parsing out to submodule config

[Stefan Beller <sbeller@google.com>]

Later we want to access this parsing in builtin/pull as well.

Signed-off-by: Stefan Beller <sbeller@google.com>
---
 builtin/fetch.c    | 18 ++----------------
 submodule-config.c | 22 ++++++++++++++++++++++
 submodule-config.h |  3 +++
 3 files changed, 27 insertions(+), 16 deletions(-)

diff --git a/builtin/fetch.c b/builtin/fetch.c
index 100248c5af..9d58dc0a8a 100644
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -53,20 +53,6 @@ static int shown_url = 0;
 static int refmap_alloc, refmap_nr;
 static const char **refmap_array;
 
-static int option_parse_recurse_submodules(const struct option *opt,
-				   const char *arg, int unset)
-{
-	if (unset) {
-		recurse_submodules = RECURSE_SUBMODULES_OFF;
-	} else {
-		if (arg)
-			recurse_submodules = parse_fetch_recurse_submodules_arg(opt->long_name, arg);
-		else
-			recurse_submodules = RECURSE_SUBMODULES_ON;
-	}
-	return 0;
-}
-
 static int git_fetch_config(const char *k, const char *v, void *cb)
 {
 	if (!strcmp(k, "fetch.prune")) {
@@ -115,9 +101,9 @@ static struct option builtin_fetch_options[] = {
 		    N_("number of submodules fetched in parallel")),
 	OPT_BOOL('p', "prune", &prune,
 		 N_("prune remote-tracking branches no longer on remote")),
-	{ OPTION_CALLBACK, 0, "recurse-submodules", NULL, N_("on-demand"),
+	{ OPTION_CALLBACK, 0, "recurse-submodules", &recurse_submodules, N_("on-demand"),
 		    N_("control recursive fetching of submodules"),
-		    PARSE_OPT_OPTARG, option_parse_recurse_submodules },
+		    PARSE_OPT_OPTARG, option_fetch_parse_recurse_submodules },
 	OPT_BOOL(0, "dry-run", &dry_run,
 		 N_("dry run")),
 	OPT_BOOL('k', "keep", &keep, N_("keep downloaded pack")),
diff --git a/submodule-config.c b/submodule-config.c
index 4f58491ddb..265d036095 100644
--- a/submodule-config.c
+++ b/submodule-config.c
@@ -2,6 +2,7 @@
 #include "submodule-config.h"
 #include "submodule.h"
 #include "strbuf.h"
+#include "parse-options.h"
 
 /*
  * submodule cache lookup structure
@@ -234,6 +235,27 @@ int parse_fetch_recurse_submodules_arg(const char *opt, const char *arg)
 	return parse_fetch_recurse(opt, arg, 1);
 }
 
+int option_fetch_parse_recurse_submodules(const struct option *opt,
+					  const char *arg, int unset)
+{
+	int *v;
+
+	if (!opt->value)
+		return -1;
+
+	v = opt->value;
+
+	if (unset) {
+		*v = RECURSE_SUBMODULES_OFF;
+	} else {
+		if (arg)
+			*v = parse_fetch_recurse_submodules_arg(opt->long_name, arg);
+		else
+			*v = RECURSE_SUBMODULES_ON;
+	}
+	return 0;
+}
+
 static int parse_update_recurse(const char *opt, const char *arg,
 				int die_on_error)
 {
diff --git a/submodule-config.h b/submodule-config.h
index d434ecdb45..1076a68653 100644
--- a/submodule-config.h
+++ b/submodule-config.h
@@ -23,6 +23,9 @@ struct submodule {
 };
 
 extern int parse_fetch_recurse_submodules_arg(const char *opt, const char *arg);
+struct option;
+extern int option_fetch_parse_recurse_submodules(const struct option *opt,
+						 const char *arg, int unset);
 extern int parse_update_recurse_submodules_arg(const char *opt, const char *arg);
 extern int parse_push_recurse_submodules_arg(const char *opt, const char *arg);
 extern int parse_submodule_config_option(const char *var, const char *value);
-- 
2.12.2.575.gb14f27f917