[PATCH 07/21] pack v4: move pv4 objhdr parsing code to packv4-parse.c

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 packv4-parse.c | 12 ++++++++++++
 packv4-parse.h |  5 +++++
 sha1_file.c    |  9 ++-------
 3 files changed, 19 insertions(+), 7 deletions(-)

diff --git a/packv4-parse.c b/packv4-parse.c
index 80ad6fc..7a43635 100644
--- a/packv4-parse.c
+++ b/packv4-parse.c
@@ -570,3 +570,15 @@ void *pv4_get_tree(struct packed_git *p, struct pack_window **w_curs,
 	}
 	return dst;
 }
+
+unsigned long pv4_unpack_object_header_buffer(const unsigned char *base,
+					      unsigned long len,
+					      enum object_type *type,
+					      unsigned long *sizep)
+{
+	const unsigned char *cp = base;
+	uintmax_t val = decode_varint(&cp);
+	*type = val & 0xf;
+	*sizep = val >> 4;
+	return cp - base;
+}
diff --git a/packv4-parse.h b/packv4-parse.h
index e6719f6..52f52f5 100644
--- a/packv4-parse.h
+++ b/packv4-parse.h
@@ -10,6 +10,11 @@ struct packv4_dict {
 struct packv4_dict *pv4_create_dict(const unsigned char *data, int dict_size);
 void pv4_free_dict(struct packv4_dict *dict);
 
+unsigned long pv4_unpack_object_header_buffer(const unsigned char *base,
+					      unsigned long len,
+					      enum object_type *type,
+					      unsigned long *sizep);
+
 void *pv4_get_commit(struct packed_git *p, struct pack_window **w_curs,
 		     off_t offset, unsigned long size);
 void *pv4_get_tree(struct packed_git *p, struct pack_window **w_curs,
diff --git a/sha1_file.c b/sha1_file.c
index 1528e28..038e22e 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -1736,13 +1736,8 @@ int unpack_object_header(struct packed_git *p,
 	base = use_pack(p, w_curs, *curpos, &left);
 	if (p->version < 4) {
 		used = unpack_object_header_buffer(base, left, &type, sizep);
-	} else {
-		const unsigned char *cp = base;
-		uintmax_t val = decode_varint(&cp);
-		used = cp - base;
-		type = val & 0xf;
-		*sizep = val >> 4;
-	}
+	} else
+		used = pv4_unpack_object_header_buffer(base, left, &type, sizep);
 	if (!used) {
 		type = OBJ_BAD;
 	} else
-- 
1.8.2.82.gc24b958