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authorNguyễn Thái Ngọc Duy <pclouds@gmail.com>2012-05-23 14:09:46 (GMT)
committerJunio C Hamano <gitster@pobox.com>2012-05-23 16:08:54 (GMT)
commit681b07de11c9463f6d93639d9fff9eccd8629eb4 (patch)
tree5104e212e6a84b65eaa3be07fbfbf71c405bdb08 /builtin/index-pack.c
parentaa3bb87176d42f1782c5030fa41e6e62492551c0 (diff)
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index-pack: hash non-delta objects while reading from stream
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/index-pack.c')
-rw-r--r--builtin/index-pack.c41
1 files changed, 30 insertions, 11 deletions
diff --git a/builtin/index-pack.c b/builtin/index-pack.c
index dc2cfe6..a744856 100644
--- a/builtin/index-pack.c
+++ b/builtin/index-pack.c
@@ -384,11 +384,27 @@ static void unlink_base_data(struct base_data *c)
free_base_data(c);
}
-static void *unpack_entry_data(unsigned long offset, unsigned long size)
+static int is_delta_type(enum object_type type)
+{
+ return (type == OBJ_REF_DELTA || type == OBJ_OFS_DELTA);
+}
+
+static void *unpack_entry_data(unsigned long offset, unsigned long size,
+ enum object_type type, unsigned char *sha1)
{
int status;
git_zstream stream;
void *buf = xmalloc(size);
+ git_SHA_CTX c;
+ char hdr[32];
+ int hdrlen;
+
+ if (!is_delta_type(type)) {
+ hdrlen = sprintf(hdr, "%s %lu", typename(type), size) + 1;
+ git_SHA1_Init(&c);
+ git_SHA1_Update(&c, hdr, hdrlen);
+ } else
+ sha1 = NULL;
memset(&stream, 0, sizeof(stream));
git_inflate_init(&stream);
@@ -396,18 +412,25 @@ static void *unpack_entry_data(unsigned long offset, unsigned long size)
stream.avail_out = size;
do {
+ unsigned char *last_out = stream.next_out;
stream.next_in = fill(1);
stream.avail_in = input_len;
status = git_inflate(&stream, 0);
use(input_len - stream.avail_in);
+ if (sha1)
+ git_SHA1_Update(&c, last_out, stream.next_out - last_out);
} while (status == Z_OK);
if (stream.total_out != size || status != Z_STREAM_END)
bad_object(offset, _("inflate returned %d"), status);
git_inflate_end(&stream);
+ if (sha1)
+ git_SHA1_Final(sha1, &c);
return buf;
}
-static void *unpack_raw_entry(struct object_entry *obj, union delta_base *delta_base)
+static void *unpack_raw_entry(struct object_entry *obj,
+ union delta_base *delta_base,
+ unsigned char *sha1)
{
unsigned char *p;
unsigned long size, c;
@@ -467,7 +490,7 @@ static void *unpack_raw_entry(struct object_entry *obj, union delta_base *delta_
}
obj->hdr_size = consumed_bytes - obj->idx.offset;
- data = unpack_entry_data(obj->idx.offset, obj->size);
+ data = unpack_entry_data(obj->idx.offset, obj->size, obj->type, sha1);
obj->idx.crc32 = input_crc32;
return data;
}
@@ -569,9 +592,8 @@ static void find_delta_children(const union delta_base *base,
}
static void sha1_object(const void *data, unsigned long size,
- enum object_type type, unsigned char *sha1)
+ enum object_type type, const unsigned char *sha1)
{
- hash_sha1_file(data, size, typename(type), sha1);
read_lock();
if (has_sha1_file(sha1)) {
void *has_data;
@@ -627,11 +649,6 @@ static void sha1_object(const void *data, unsigned long size,
}
}
-static int is_delta_type(enum object_type type)
-{
- return (type == OBJ_REF_DELTA || type == OBJ_OFS_DELTA);
-}
-
/*
* This function is part of find_unresolved_deltas(). There are two
* walkers going in the opposite ways.
@@ -711,6 +728,8 @@ static void resolve_delta(struct object_entry *delta_obj,
free(delta_data);
if (!result->data)
bad_object(delta_obj->idx.offset, _("failed to apply delta"));
+ hash_sha1_file(result->data, result->size,
+ typename(delta_obj->real_type), delta_obj->idx.sha1);
sha1_object(result->data, result->size, delta_obj->real_type,
delta_obj->idx.sha1);
counter_lock();
@@ -851,7 +870,7 @@ static void parse_pack_objects(unsigned char *sha1)
nr_objects);
for (i = 0; i < nr_objects; i++) {
struct object_entry *obj = &objects[i];
- void *data = unpack_raw_entry(obj, &delta->base);
+ void *data = unpack_raw_entry(obj, &delta->base, obj->idx.sha1);
obj->real_type = obj->type;
if (is_delta_type(obj->type)) {
nr_deltas++;