[PATCH v2 20/23] refs.c: add methods for misc ref operations

[Ronnie Sahlberg <sahlberg@google.com>]

Add ref backend methods for:
resolve_ref_unsafe, is_refname_available, pack_refs, peel_ref,
create_symref, resolve_gitlink_ref.

Signed-off-by: Ronnie Sahlberg <sahlberg@google.com>
---
 refs-common.c | 33 +++++++++++++++++++++++++++++++++
 refs.c        | 22 +++++++++++++++-------
 refs.h        | 19 +++++++++++++++++++
 3 files changed, 67 insertions(+), 7 deletions(-)

diff --git a/refs-common.c b/refs-common.c
index 68152d6..d9688e2 100644
--- a/refs-common.c
+++ b/refs-common.c
@@ -885,3 +885,36 @@ int delete_reflog(const char *refname)
 {
 	return refs->delete_reflog(refname);
 }
+
+const char *resolve_ref_unsafe(const char *ref, unsigned char *sha1,
+			       int reading, int *flag)
+{
+	return refs->resolve_ref_unsafe(ref, sha1, reading, flag);
+}
+
+int is_refname_available(const char *refname, const char **skip, int skipnum)
+{
+	return refs->is_refname_available(refname, skip, skipnum);
+}
+
+int pack_refs(unsigned int flags, struct strbuf *err)
+{
+	return refs->pack_refs(flags, err);
+}
+
+int peel_ref(const char *refname, unsigned char *sha1)
+{
+	return refs->peel_ref(refname, sha1);
+}
+
+int create_symref(const char *ref_target, const char *refs_heads_master,
+		  const char *logmsg)
+{
+	return refs->create_symref(ref_target, refs_heads_master, logmsg);
+}
+
+int resolve_gitlink_ref(const char *path, const char *refname,
+			unsigned char *sha1)
+{
+	return refs->resolve_gitlink_ref(path, refname, sha1);
+}
diff --git a/refs.c b/refs.c
index 699b548..9439809 100644
--- a/refs.c
+++ b/refs.c
@@ -1114,7 +1114,8 @@ static struct ref_dir *get_loose_refs(struct ref_cache *refs)
 	return get_ref_dir(refs->loose);
 }
 
-int is_refname_available(const char *refname, const char **skip, int skipnum)
+static int files_is_refname_available(const char *refname, const char **skip,
+				      int skipnum)
 {
 	if (!is_refname_available_dir(refname, get_packed_refs(&ref_cache),
 				      skip, skipnum))
@@ -1188,7 +1189,7 @@ static int resolve_gitlink_ref_recursive(struct ref_cache *refs,
 	return resolve_gitlink_ref_recursive(refs, p, sha1, recursion+1);
 }
 
-int resolve_gitlink_ref(const char *path, const char *refname, unsigned char *sha1)
+static int files_resolve_gitlink_ref(const char *path, const char *refname, unsigned char *sha1)
 {
 	int len = strlen(path), retval;
 	char *submodule;
@@ -1247,7 +1248,7 @@ static const char *handle_missing_loose_ref(const char *refname,
 }
 
 /* This function needs to return a meaningful errno on failure */
-const char *resolve_ref_unsafe(const char *refname, unsigned char *sha1, int flags, int *ref_flag)
+static const char *files_resolve_ref_unsafe(const char *refname, unsigned char *sha1, int flags, int *ref_flag)
 {
 	int depth = MAXDEPTH;
 	ssize_t len;
@@ -1466,7 +1467,7 @@ static enum peel_status peel_entry(struct ref_entry *entry, int repeel)
 	return status;
 }
 
-int peel_ref(const char *refname, unsigned char *sha1)
+static int files_peel_ref(const char *refname, unsigned char *sha1)
 {
 	int flag;
 	unsigned char base[20];
@@ -2080,7 +2081,7 @@ static void prune_refs(struct ref_to_prune *r)
 	}
 }
 
-int pack_refs(unsigned int flags, struct strbuf *err)
+static int files_pack_refs(unsigned int flags, struct strbuf *err)
 {
 	struct pack_refs_cb_data cbdata;
 
@@ -2453,8 +2454,9 @@ static int write_ref_sha1(struct ref_lock *lock,
 	return 0;
 }
 
-int create_symref(const char *ref_target, const char *refs_heads_master,
-		  const char *logmsg)
+static int files_create_symref(const char *ref_target,
+			       const char *refs_heads_master,
+			       const char *logmsg)
 {
 	const char *lockpath;
 	char ref[1000];
@@ -3301,6 +3303,12 @@ struct ref_be refs_files = {
 	files_reflog_exists,
 	files_create_reflog,
 	files_delete_reflog,
+	files_resolve_ref_unsafe,
+	files_is_refname_available,
+	files_pack_refs,
+	files_peel_ref,
+	files_create_symref,
+	files_resolve_gitlink_ref,
 };
 
 struct ref_be *refs = &refs_files;
diff --git a/refs.h b/refs.h
index 302eb03..ab120c5 100644
--- a/refs.h
+++ b/refs.h
@@ -384,6 +384,19 @@ typedef int (*reflog_exists_fn)(const char *refname);
 typedef int (*create_reflog_fn)(const char *refname);
 typedef int (*delete_reflog_fn)(const char *refname);
 
+typedef const char *(*resolve_ref_unsafe_fn)(const char *ref,
+		unsigned char *sha1, int reading, int *flag);
+
+typedef int (*is_refname_available_fn)(const char *refname, const char **skip,
+				       int skipnum);
+typedef int (*pack_refs_fn)(unsigned int flags, struct strbuf *err);
+typedef int (*peel_ref_fn)(const char *refname, unsigned char *sha1);
+typedef int (*create_symref_fn)(const char *ref_target,
+				const char *refs_heads_master,
+				const char *logmsg);
+typedef int (*resolve_gitlink_ref_fn)(const char *path, const char *refname,
+				      unsigned char *sha1);
+
 struct ref_be {
 	transaction_begin_fn transaction_begin;
 	transaction_update_sha1_fn transaction_update_sha1;
@@ -398,6 +411,12 @@ struct ref_be {
 	reflog_exists_fn reflog_exists;
 	create_reflog_fn create_reflog;
 	delete_reflog_fn delete_reflog;
+	resolve_ref_unsafe_fn resolve_ref_unsafe;
+	is_refname_available_fn is_refname_available;
+	pack_refs_fn pack_refs;
+	peel_ref_fn peel_ref;
+	create_symref_fn create_symref;
+	resolve_gitlink_ref_fn resolve_gitlink_ref;
 };
 
 extern struct ref_be *refs;
-- 
2.0.1.556.g3edca4c