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authorJunio C Hamano <gitster@pobox.com>2010-03-02 20:44:11 (GMT)
committerJunio C Hamano <gitster@pobox.com>2010-03-02 20:44:11 (GMT)
commit77b30bcecd84225a21a8639c272fde88180f36d9 (patch)
tree0d2b1d071c37b119943a88c195ff2bfd50e3f500
parentca97d26cc612348baa423475adfb48194386b4a5 (diff)
parentf965c525a4d04837b1b7ed43e3fa2dc8c0df4e2b (diff)
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Merge branch 'ml/encode-header-refactor'
* ml/encode-header-refactor: move encode_in_pack_object_header() to a better place refactor duplicated encode_header in pack-objects and fast-import
-rw-r--r--builtin-pack-objects.c31
-rw-r--r--fast-import.c29
-rw-r--r--pack-write.c27
-rw-r--r--pack.h1
4 files changed, 33 insertions, 55 deletions
diff --git a/builtin-pack-objects.c b/builtin-pack-objects.c
index e1d3adf..6b2f65c 100644
--- a/builtin-pack-objects.c
+++ b/builtin-pack-objects.c
@@ -155,33 +155,6 @@ static unsigned long do_compress(void **pptr, unsigned long size)
}
/*
- * The per-object header is a pretty dense thing, which is
- * - first byte: low four bits are "size", then three bits of "type",
- * and the high bit is "size continues".
- * - each byte afterwards: low seven bits are size continuation,
- * with the high bit being "size continues"
- */
-static int encode_header(enum object_type type, unsigned long size, unsigned char *hdr)
-{
- int n = 1;
- unsigned char c;
-
- if (type < OBJ_COMMIT || type > OBJ_REF_DELTA)
- die("bad type %d", type);
-
- c = (type << 4) | (size & 15);
- size >>= 4;
- while (size) {
- *hdr++ = c | 0x80;
- c = size & 0x7f;
- size >>= 7;
- n++;
- }
- *hdr = c;
- return n;
-}
-
-/*
* we are going to reuse the existing object data as is. make
* sure it is not corrupt.
*/
@@ -321,7 +294,7 @@ static unsigned long write_object(struct sha1file *f,
* The object header is a byte of 'type' followed by zero or
* more bytes of length.
*/
- hdrlen = encode_header(type, size, header);
+ hdrlen = encode_in_pack_object_header(type, size, header);
if (type == OBJ_OFS_DELTA) {
/*
@@ -372,7 +345,7 @@ static unsigned long write_object(struct sha1file *f,
if (entry->delta)
type = (allow_ofs_delta && entry->delta->idx.offset) ?
OBJ_OFS_DELTA : OBJ_REF_DELTA;
- hdrlen = encode_header(type, entry->size, header);
+ hdrlen = encode_in_pack_object_header(type, entry->size, header);
offset = entry->in_pack_offset;
revidx = find_pack_revindex(p, offset);
diff --git a/fast-import.c b/fast-import.c
index 74f08bd..309f2c5 100644
--- a/fast-import.c
+++ b/fast-import.c
@@ -980,29 +980,6 @@ static void cycle_packfile(void)
start_packfile();
}
-static size_t encode_header(
- enum object_type type,
- uintmax_t size,
- unsigned char *hdr)
-{
- int n = 1;
- unsigned char c;
-
- if (type < OBJ_COMMIT || type > OBJ_REF_DELTA)
- die("bad type %d", type);
-
- c = (type << 4) | (size & 15);
- size >>= 4;
- while (size) {
- *hdr++ = c | 0x80;
- c = size & 0x7f;
- size >>= 7;
- n++;
- }
- *hdr = c;
- return n;
-}
-
static int store_object(
enum object_type type,
struct strbuf *dat,
@@ -1103,7 +1080,7 @@ static int store_object(
delta_count_by_type[type]++;
e->depth = last->depth + 1;
- hdrlen = encode_header(OBJ_OFS_DELTA, deltalen, hdr);
+ hdrlen = encode_in_pack_object_header(OBJ_OFS_DELTA, deltalen, hdr);
sha1write(pack_file, hdr, hdrlen);
pack_size += hdrlen;
@@ -1114,7 +1091,7 @@ static int store_object(
pack_size += sizeof(hdr) - pos;
} else {
e->depth = 0;
- hdrlen = encode_header(type, dat->len, hdr);
+ hdrlen = encode_in_pack_object_header(type, dat->len, hdr);
sha1write(pack_file, hdr, hdrlen);
pack_size += hdrlen;
}
@@ -1188,7 +1165,7 @@ static void stream_blob(uintmax_t len, unsigned char *sha1out, uintmax_t mark)
memset(&s, 0, sizeof(s));
deflateInit(&s, pack_compression_level);
- hdrlen = encode_header(OBJ_BLOB, len, out_buf);
+ hdrlen = encode_in_pack_object_header(OBJ_BLOB, len, out_buf);
if (out_sz <= hdrlen)
die("impossibly large object header");
diff --git a/pack-write.c b/pack-write.c
index 9f47cf9..a905ca4 100644
--- a/pack-write.c
+++ b/pack-write.c
@@ -253,3 +253,30 @@ char *index_pack_lockfile(int ip_out)
}
return NULL;
}
+
+/*
+ * The per-object header is a pretty dense thing, which is
+ * - first byte: low four bits are "size", then three bits of "type",
+ * and the high bit is "size continues".
+ * - each byte afterwards: low seven bits are size continuation,
+ * with the high bit being "size continues"
+ */
+int encode_in_pack_object_header(enum object_type type, uintmax_t size, unsigned char *hdr)
+{
+ int n = 1;
+ unsigned char c;
+
+ if (type < OBJ_COMMIT || type > OBJ_REF_DELTA)
+ die("bad type %d", type);
+
+ c = (type << 4) | (size & 15);
+ size >>= 4;
+ while (size) {
+ *hdr++ = c | 0x80;
+ c = size & 0x7f;
+ size >>= 7;
+ n++;
+ }
+ *hdr = c;
+ return n;
+}
diff --git a/pack.h b/pack.h
index b759a23..d268c01 100644
--- a/pack.h
+++ b/pack.h
@@ -60,6 +60,7 @@ extern int check_pack_crc(struct packed_git *p, struct pack_window **w_curs, off
extern int verify_pack(struct packed_git *);
extern void fixup_pack_header_footer(int, unsigned char *, const char *, uint32_t, unsigned char *, off_t);
extern char *index_pack_lockfile(int fd);
+extern int encode_in_pack_object_header(enum object_type, uintmax_t, unsigned char *);
#define PH_ERROR_EOF (-1)
#define PH_ERROR_PACK_SIGNATURE (-2)