submodule-config: move submodule-config functions to submodule-config.c

Migrate the functions used to initialize the submodule-config to
submodule-config.c so that the callback routine used in the
initialization process can be static and prevent it from being used
outside of initializing the submodule-config through the main API.

Signed-off-by: Brandon Williams <bmwill@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

builtin/ls-files.c

@@ -19,6 +19,7 @@
 #include "pathspec.h"
 #include "run-command.h"
 #include "submodule.h"
+#include "submodule-config.h"
 
 static int abbrev;
 static int show_deleted;

submodule-config.c

@@ -449,7 +449,7 @@ static int parse_config(const char *var, const char *value, void *data)
 	return ret;
 }
 
-int gitmodule_oid_from_commit(const struct object_id *treeish_name,
+static int gitmodule_oid_from_commit(const struct object_id *treeish_name,
 				     struct object_id *gitmodules_oid,
 				     struct strbuf *rev)
 {
@@ -552,9 +552,9 @@ static void submodule_cache_check_init(struct repository *repo)
 	submodule_cache_init(repo->submodule_cache);
 }
 
-int submodule_config_option(struct repository *repo,
+static int gitmodules_cb(const char *var, const char *value, void *data)
-			    const char *var, const char *value)
 {
+	struct repository *repo = data;
 	struct parse_config_parameter parameter;
 
 	submodule_cache_check_init(repo);
@@ -567,9 +567,33 @@ int submodule_config_option(struct repository *repo,
 	return parse_config(var, value, &parameter);
 }
 
-int parse_submodule_config_option(const char *var, const char *value)
+void repo_read_gitmodules(struct repository *repo)
 {
-	return submodule_config_option(the_repository, var, value);
+	if (repo->worktree) {
+		char *gitmodules;
+
+		if (repo_read_index(repo) < 0)
+			return;
+
+		gitmodules = repo_worktree_path(repo, GITMODULES_FILE);
+
+		if (!is_gitmodules_unmerged(repo->index))
+			git_config_from_file(gitmodules_cb, gitmodules, repo);
+
+		free(gitmodules);
+	}
+}
+
+void gitmodules_config_oid(const struct object_id *commit_oid)
+{
+	struct strbuf rev = STRBUF_INIT;
+	struct object_id oid;
+
+	if (gitmodule_oid_from_commit(commit_oid, &oid, &rev)) {
+		git_config_from_blob_oid(gitmodules_cb, rev.buf,
+					 &oid, the_repository);
+	}
+	strbuf_release(&rev);
 }
 
 const struct submodule *submodule_from_name(const struct object_id *treeish_name,

submodule-config.h

@@ -34,8 +34,8 @@ 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 submodule_config_option(struct repository *repo,
+extern void repo_read_gitmodules(struct repository *repo);
-				   const char *var, const char *value);
+extern void gitmodules_config_oid(const struct object_id *commit_oid);
 extern const struct submodule *submodule_from_name(
 		const struct object_id *commit_or_tree, const char *name);
 extern const struct submodule *submodule_from_path(
@@ -43,9 +43,6 @@ extern const struct submodule *submodule_from_path(
 extern const struct submodule *submodule_from_cache(struct repository *repo,
 						    const struct object_id *treeish_name,
 						    const char *key);
-extern int gitmodule_oid_from_commit(const struct object_id *commit_oid,
-				     struct object_id *gitmodules_oid,
-				     struct strbuf *rev);
 extern void submodule_free(void);
 
 #endif /* SUBMODULE_CONFIG_H */

submodule.c

@@ -216,46 +216,11 @@ void load_submodule_cache(void)
 	gitmodules_config();
 }
 
-static int gitmodules_cb(const char *var, const char *value, void *data)
-{
-	struct repository *repo = data;
-	return submodule_config_option(repo, var, value);
-}
-
-void repo_read_gitmodules(struct repository *repo)
-{
-	if (repo->worktree) {
-		char *gitmodules;
-
-		if (repo_read_index(repo) < 0)
-			return;
-
-		gitmodules = repo_worktree_path(repo, GITMODULES_FILE);
-
-		if (!is_gitmodules_unmerged(repo->index))
-			git_config_from_file(gitmodules_cb, gitmodules, repo);
-
-		free(gitmodules);
-	}
-}
-
 void gitmodules_config(void)
 {
 	repo_read_gitmodules(the_repository);
 }
 
-void gitmodules_config_oid(const struct object_id *commit_oid)
-{
-	struct strbuf rev = STRBUF_INIT;
-	struct object_id oid;
-
-	if (gitmodule_oid_from_commit(commit_oid, &oid, &rev)) {
-		git_config_from_blob_oid(gitmodules_cb, rev.buf,
-					 &oid, the_repository);
-	}
-	strbuf_release(&rev);
-}
-
 /*
  * Determine if a submodule has been initialized at a given 'path'
  */

submodule.h

@@ -47,8 +47,6 @@ int option_parse_recurse_submodules_worktree_updater(const struct option *opt,
 						     const char *arg, int unset);
 void load_submodule_cache(void);
 extern void gitmodules_config(void);
-extern void repo_read_gitmodules(struct repository *repo);
-extern void gitmodules_config_oid(const struct object_id *commit_oid);
 extern int is_submodule_active(struct repository *repo, const char *path);
 /*
  * Determine if a submodule has been populated at a given 'path' by checking if