[PATCH v3 13/23] pack: move get_size_from_delta()
Signed-off-by: Jonathan Tan <jonathantanmy@google.com>
---
cache.h | 1 -
packfile.c | 40 ++++++++++++++++++++++++++++++++++++++++
packfile.h | 1 +
sha1_file.c | 39 ---------------------------------------
4 files changed, 41 insertions(+), 40 deletions(-)
diff --git a/cache.h b/cache.h
index 75cc0c497..87f65aeea 100644
--- a/cache.h
+++ b/cache.h
@@ -1669,7 +1669,6 @@ extern off_t find_pack_entry_one(const unsigned char *sha1, struct packed_git *)
extern int is_pack_valid(struct packed_git *);
extern void *unpack_entry(struct packed_git *, off_t, enum object_type *, unsigned long *);
-extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
extern int unpack_object_header(struct packed_git *, struct pack_window **, off_t *, unsigned long *);
/*
diff --git a/packfile.c b/packfile.c
index 43b708812..fa90b643e 100644
--- a/packfile.c
+++ b/packfile.c
@@ -4,6 +4,7 @@
#include "dir.h"
#include "mergesort.h"
#include "packfile.h"
+#include "delta.h"
char *odb_pack_name(struct strbuf *buf,
const unsigned char *sha1,
@@ -909,3 +910,42 @@ unsigned long unpack_object_header_buffer(const unsigned char *buf,
*sizep = size;
return used;
}
+
+unsigned long get_size_from_delta(struct packed_git *p,
+ struct pack_window **w_curs,
+ off_t curpos)
+{
+ const unsigned char *data;
+ unsigned char delta_head[20], *in;
+ git_zstream stream;
+ int st;
+
+ memset(&stream, 0, sizeof(stream));
+ stream.next_out = delta_head;
+ stream.avail_out = sizeof(delta_head);
+
+ git_inflate_init(&stream);
+ do {
+ in = use_pack(p, w_curs, curpos, &stream.avail_in);
+ stream.next_in = in;
+ st = git_inflate(&stream, Z_FINISH);
+ curpos += stream.next_in - in;
+ } while ((st == Z_OK || st == Z_BUF_ERROR) &&
+ stream.total_out < sizeof(delta_head));
+ git_inflate_end(&stream);
+ if ((st != Z_STREAM_END) && stream.total_out != sizeof(delta_head)) {
+ error("delta data unpack-initial failed");
+ return 0;
+ }
+
+ /* Examine the initial part of the delta to figure out
+ * the result size.
+ */
+ data = delta_head;
+
+ /* ignore base size */
+ get_delta_hdr_size(&data, delta_head+sizeof(delta_head));
+
+ /* Read the result size */
+ return get_delta_hdr_size(&data, delta_head+sizeof(delta_head));
+}
diff --git a/packfile.h b/packfile.h
index 9f36e0112..9c3bce6b2 100644
--- a/packfile.h
+++ b/packfile.h
@@ -63,6 +63,7 @@ extern void unuse_pack(struct pack_window **);
extern struct packed_git *add_packed_git(const char *path, size_t path_len, int local);
extern unsigned long unpack_object_header_buffer(const unsigned char *buf, unsigned long len, enum object_type *type, unsigned long *sizep);
+extern unsigned long get_size_from_delta(struct packed_git *, struct pack_window **, off_t);
extern void release_pack_memory(size_t);
diff --git a/sha1_file.c b/sha1_file.c
index b999957b0..5d016ad6b 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -1100,45 +1100,6 @@ int parse_sha1_header(const char *hdr, unsigned long *sizep)
return parse_sha1_header_extended(hdr, &oi, 0);
}
-unsigned long get_size_from_delta(struct packed_git *p,
- struct pack_window **w_curs,
- off_t curpos)
-{
- const unsigned char *data;
- unsigned char delta_head[20], *in;
- git_zstream stream;
- int st;
-
- memset(&stream, 0, sizeof(stream));
- stream.next_out = delta_head;
- stream.avail_out = sizeof(delta_head);
-
- git_inflate_init(&stream);
- do {
- in = use_pack(p, w_curs, curpos, &stream.avail_in);
- stream.next_in = in;
- st = git_inflate(&stream, Z_FINISH);
- curpos += stream.next_in - in;
- } while ((st == Z_OK || st == Z_BUF_ERROR) &&
- stream.total_out < sizeof(delta_head));
- git_inflate_end(&stream);
- if ((st != Z_STREAM_END) && stream.total_out != sizeof(delta_head)) {
- error("delta data unpack-initial failed");
- return 0;
- }
-
- /* Examine the initial part of the delta to figure out
- * the result size.
- */
- data = delta_head;
-
- /* ignore base size */
- get_delta_hdr_size(&data, delta_head+sizeof(delta_head));
-
- /* Read the result size */
- return get_delta_hdr_size(&data, delta_head+sizeof(delta_head));
-}
-
static off_t get_delta_base(struct packed_git *p,
struct pack_window **w_curs,
off_t *curpos,
--
2.14.1.480.gb18f417b89-goog