Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
Documentation/technical/pack-protocol.txt | 2 ++
Documentation/technical/protocol-capabilities.txt | 9 +++++++
upload-pack.c | 30 +++++++++++++++++++++--
3 files changed, 39 insertions(+), 2 deletions(-)
diff --git a/Documentation/technical/pack-protocol.txt b/Documentation/technical/pack-protocol.txt
index c6977bb..5207d08 100644
--- a/Documentation/technical/pack-protocol.txt
+++ b/Documentation/technical/pack-protocol.txt
@@ -167,6 +167,7 @@ MUST peel the ref if it's an annotated tag.
----
advertised-refs = (no-refs / list-of-refs)
*shallow
+ skip
flush-pkt
no-refs = PKT-LINE(zero-id SP "capabilities^{}"
@@ -181,6 +182,7 @@ MUST peel the ref if it's an annotated tag.
other-peeled = obj-id SP refname "^{}"
shallow = PKT-LINE("shallow" SP obj-id)
+ skip = PKT-LINE("skip" SP obj-id SP 1*DIGIT)
capability-list = capability *(SP capability)
capability = 1*(LC_ALPHA / DIGIT / "-" / "_")
diff --git a/Documentation/technical/protocol-capabilities.txt b/Documentation/technical/protocol-capabilities.txt
index eaab6b4..0567970 100644
--- a/Documentation/technical/protocol-capabilities.txt
+++ b/Documentation/technical/protocol-capabilities.txt
@@ -275,3 +275,12 @@ to accept a signed push certificate, and asks the <nonce> to be
included in the push certificate. A send-pack client MUST NOT
send a push-cert packet unless the receive-pack server advertises
this capability.
+
+partial
+------
+
+This capability adds "skip" line to the protocol, which passes --skip
+and --skip-hash to pack-objects. When "skip" line is present, given
+the same set of input from the client (e.g. have, want and shallow
+lines, "skip" line excluded), the exact same pack must be produced.
+
diff --git a/upload-pack.c b/upload-pack.c
index b3f6653..5565afe 100644
--- a/upload-pack.c
+++ b/upload-pack.c
@@ -53,6 +53,9 @@ static int use_sideband;
static int advertise_refs;
static int stateless_rpc;
+static struct object_id skip_hash;
+static int skip_opt = -1;
+
static void reset_timeout(void)
{
alarm(timeout);
@@ -90,7 +93,7 @@ static void create_pack_file(void)
"corruption on the remote side.";
int buffered = -1;
ssize_t sz;
- const char *argv[13];
+ const char *argv[17];
int i, arg = 0;
FILE *pipe_fd;
@@ -112,6 +115,14 @@ static void create_pack_file(void)
argv[arg++] = "--delta-base-offset";
if (use_include_tag)
argv[arg++] = "--include-tag";
+ if (skip_opt >= 0) {
+ argv[arg++] = "--skip";
+ argv[arg++] = xstrfmt("%d", skip_opt);
+ if (skip_opt > 0) {
+ argv[arg++] = "--skip-hash";
+ argv[arg++] = xstrdup(oid_to_hex(&skip_hash));
+ }
+ }
argv[arg++] = NULL;
pack_objects.in = -1;
@@ -550,6 +561,8 @@ static void receive_needs(void)
const char *features;
unsigned char sha1_buf[20];
char *line = packet_read_line(0, NULL);
+ const char *arg;
+
reset_timeout();
if (!line)
break;
@@ -577,6 +590,19 @@ static void receive_needs(void)
die("Invalid deepen: %s", line);
continue;
}
+ if (skip_prefix(line, "skip ", &arg)) {
+ char *end = NULL;
+
+ if (get_oid_hex(arg, &skip_hash))
+ die("invalid skip line: %s", line);
+ arg += 40;
+ if (*arg++ != ' ')
+ die("invalid skip line: %s", line);
+ skip_opt = strtol(arg, &end, 0);
+ if (!end || *end || skip_opt < 0)
+ die("Invalid skip line: %s", line);
+ continue;
+ }
if (!starts_with(line, "want ") ||
get_sha1_hex(line+5, sha1_buf))
die("git upload-pack: protocol error, "
@@ -725,7 +751,7 @@ static int send_ref(const char *refname, const struct object_id *oid,
{
static const char *capabilities = "multi_ack thin-pack side-band"
" side-band-64k ofs-delta shallow no-progress"
- " include-tag multi_ack_detailed";
+ " include-tag multi_ack_detailed partial";
const char *refname_nons = strip_namespace(refname);
struct object_id peeled;
--
2.7.0.377.g4cd97dd
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