Re: [PATCH v3 06/28] connect.c: teach get_remote_heads to parse "shallow" lines

2013-11-27 Thread Duy Nguyen
On Tue, Nov 26, 2013 at 5:42 AM, Junio C Hamano  wrote:
> Junio C Hamano  writes:
>
>> Perhaps a preparatory patch needs to rename the structure type to
>> object_name_list or something.  And then we can make the variable
>> names, not typenames, responsible for signalling what they mean,
>> i.e.
>>
>>   get_remote_heads(...
>>   struct list_of_objects *extra_have,
>> struct list_of_objects *shallow_points);
>>
>> when we introduce the new parameter.
>
> Yuck, and these are not "list-of-objects", either.  They are
> "list-of-object-names".

I was thinking of renaming it to sha1_array and what do you know, we
do have 'struct sha1_array' with exact same (or better) functionality
that extra_have_objects provides. Will replace extra_have_objects with
current sha1_array.
-- 
Duy
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Re: [PATCH v3 06/28] connect.c: teach get_remote_heads to parse "shallow" lines

2013-11-25 Thread Junio C Hamano
Junio C Hamano  writes:

> Perhaps a preparatory patch needs to rename the structure type to
> object_name_list or something.  And then we can make the variable
> names, not typenames, responsible for signalling what they mean,
> i.e.
>
>   get_remote_heads(...
>   struct list_of_objects *extra_have,
> struct list_of_objects *shallow_points);
>
> when we introduce the new parameter.

Yuck, and these are not "list-of-objects", either.  They are
"list-of-object-names".

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Re: [PATCH v3 06/28] connect.c: teach get_remote_heads to parse "shallow" lines

2013-11-25 Thread Junio C Hamano
Nguyễn Thái Ngọc Duy   writes:

> No callers pass a non-empty pointer as shallow_points at this
> stage. As a result, all clients still refuse to talk to shallow
> repository on the other end.
>
> Signed-off-by: Nguyễn Thái Ngọc Duy 
> ---
>  builtin/fetch-pack.c |  2 +-
>  builtin/send-pack.c  |  2 +-
>  connect.c| 12 +++-
>  remote-curl.c|  2 +-
>  remote.h |  3 ++-
>  transport.c  |  7 ---
>  6 files changed, 20 insertions(+), 8 deletions(-)
>
> diff --git a/builtin/fetch-pack.c b/builtin/fetch-pack.c
> index c8e8582..c1d918f 100644
> --- a/builtin/fetch-pack.c
> +++ b/builtin/fetch-pack.c
> @@ -150,7 +150,7 @@ int cmd_fetch_pack(int argc, const char **argv, const 
> char *prefix)
>  args.verbose ? CONNECT_VERBOSE : 0);
>   }
>  
> - get_remote_heads(fd[0], NULL, 0, &ref, 0, NULL);
> + get_remote_heads(fd[0], NULL, 0, &ref, 0, NULL, NULL);
>  
>   ref = fetch_pack(&args, fd, conn, ref, dest,
>sought, nr_sought, pack_lockfile_ptr);
> diff --git a/builtin/send-pack.c b/builtin/send-pack.c
> index 51121f2..bfa9253 100644
> --- a/builtin/send-pack.c
> +++ b/builtin/send-pack.c
> @@ -233,7 +233,7 @@ int cmd_send_pack(int argc, const char **argv, const char 
> *prefix)
>  
>   memset(&extra_have, 0, sizeof(extra_have));
>  
> - get_remote_heads(fd[0], NULL, 0, &remote_refs, REF_NORMAL, &extra_have);
> + get_remote_heads(fd[0], NULL, 0, &remote_refs, REF_NORMAL, &extra_have, 
> NULL);
>  
>   transport_verify_remote_names(nr_refspecs, refspecs);
>  
> diff --git a/connect.c b/connect.c
> index 06e88b0..d0602b0 100644
> --- a/connect.c
> +++ b/connect.c
> @@ -122,7 +122,8 @@ static void annotate_refs_with_symref_info(struct ref 
> *ref)
>   */
>  struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
> struct ref **list, unsigned int flags,
> -   struct extra_have_objects *extra_have)
> +   struct extra_have_objects *extra_have,
> +   struct extra_have_objects *shallow_points)

The _shape_ of the information you would want to keep track of for
the shallow cut-off points may exactly be the same as that is for
extra-have endspoints, but it still feels wrong to throw these
shallow cut-off points into a structure called "extra have". After
all, these are objects the other end does not have, which is the
direct opposite of extra-have.

Perhaps a preparatory patch needs to rename the structure type to
object_name_list or something.  And then we can make the variable
names, not typenames, responsible for signalling what they mean,
i.e.

get_remote_heads(...
struct list_of_objects *extra_have,
struct list_of_objects *shallow_points);

when we introduce the new parameter.
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[PATCH v3 06/28] connect.c: teach get_remote_heads to parse "shallow" lines

2013-11-24 Thread Nguyễn Thái Ngọc Duy
No callers pass a non-empty pointer as shallow_points at this
stage. As a result, all clients still refuse to talk to shallow
repository on the other end.

Signed-off-by: Nguyễn Thái Ngọc Duy 
---
 builtin/fetch-pack.c |  2 +-
 builtin/send-pack.c  |  2 +-
 connect.c| 12 +++-
 remote-curl.c|  2 +-
 remote.h |  3 ++-
 transport.c  |  7 ---
 6 files changed, 20 insertions(+), 8 deletions(-)

diff --git a/builtin/fetch-pack.c b/builtin/fetch-pack.c
index c8e8582..c1d918f 100644
--- a/builtin/fetch-pack.c
+++ b/builtin/fetch-pack.c
@@ -150,7 +150,7 @@ int cmd_fetch_pack(int argc, const char **argv, const char 
*prefix)
   args.verbose ? CONNECT_VERBOSE : 0);
}
 
-   get_remote_heads(fd[0], NULL, 0, &ref, 0, NULL);
+   get_remote_heads(fd[0], NULL, 0, &ref, 0, NULL, NULL);
 
ref = fetch_pack(&args, fd, conn, ref, dest,
 sought, nr_sought, pack_lockfile_ptr);
diff --git a/builtin/send-pack.c b/builtin/send-pack.c
index 51121f2..bfa9253 100644
--- a/builtin/send-pack.c
+++ b/builtin/send-pack.c
@@ -233,7 +233,7 @@ int cmd_send_pack(int argc, const char **argv, const char 
*prefix)
 
memset(&extra_have, 0, sizeof(extra_have));
 
-   get_remote_heads(fd[0], NULL, 0, &remote_refs, REF_NORMAL, &extra_have);
+   get_remote_heads(fd[0], NULL, 0, &remote_refs, REF_NORMAL, &extra_have, 
NULL);
 
transport_verify_remote_names(nr_refspecs, refspecs);
 
diff --git a/connect.c b/connect.c
index 06e88b0..d0602b0 100644
--- a/connect.c
+++ b/connect.c
@@ -122,7 +122,8 @@ static void annotate_refs_with_symref_info(struct ref *ref)
  */
 struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
  struct ref **list, unsigned int flags,
- struct extra_have_objects *extra_have)
+ struct extra_have_objects *extra_have,
+ struct extra_have_objects *shallow_points)
 {
struct ref **orig_list = list;
int got_at_least_one_head = 0;
@@ -148,6 +149,15 @@ struct ref **get_remote_heads(int in, char *src_buf, 
size_t src_len,
if (len > 4 && !prefixcmp(buffer, "ERR "))
die("remote error: %s", buffer + 4);
 
+   if (len == 48 && !prefixcmp(buffer, "shallow ")) {
+   if (get_sha1_hex(buffer + 8, old_sha1))
+   die("protocol error: expected shallow sha, got 
'%s'", buffer + 8);
+   if (!shallow_points)
+   die("repository on the other end cannot be 
shallow");
+   add_extra_have(shallow_points, old_sha1);
+   continue;
+   }
+
if (len < 42 || get_sha1_hex(buffer, old_sha1) || buffer[40] != 
' ')
die("protocol error: expected sha/ref, got '%s'", 
buffer);
name = buffer + 41;
diff --git a/remote-curl.c b/remote-curl.c
index c9b891a..10f 100644
--- a/remote-curl.c
+++ b/remote-curl.c
@@ -107,7 +107,7 @@ static struct ref *parse_git_refs(struct discovery *heads, 
int for_push)
 {
struct ref *list = NULL;
get_remote_heads(-1, heads->buf, heads->len, &list,
-for_push ? REF_NORMAL : 0, NULL);
+for_push ? REF_NORMAL : 0, NULL, NULL);
return list;
 }
 
diff --git a/remote.h b/remote.h
index 131130a..773faa9 100644
--- a/remote.h
+++ b/remote.h
@@ -143,7 +143,8 @@ struct extra_have_objects {
 };
 extern struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
 struct ref **list, unsigned int flags,
-struct extra_have_objects *);
+struct extra_have_objects *have,
+struct extra_have_objects *shallow);
 
 int resolve_remote_symref(struct ref *ref, struct ref *list);
 int ref_newer(const unsigned char *new_sha1, const unsigned char *old_sha1);
diff --git a/transport.c b/transport.c
index 7202b77..9c51767 100644
--- a/transport.c
+++ b/transport.c
@@ -511,7 +511,7 @@ static struct ref *get_refs_via_connect(struct transport 
*transport, int for_pus
 
connect_setup(transport, for_push, 0);
get_remote_heads(data->fd[0], NULL, 0, &refs,
-for_push ? REF_NORMAL : 0, &data->extra_have);
+for_push ? REF_NORMAL : 0, &data->extra_have, NULL);
data->got_remote_heads = 1;
 
return refs;
@@ -541,7 +541,8 @@ static int fetch_refs_via_pack(struct transport *transport,
 
if (!data->got_remote_heads) {
connect_setup(transport, 0, 0);
-   get_remote_heads(data->fd[0], NULL, 0, &refs_tmp, 0, NULL);
+   get_remote_heads(data->fd[0], NULL, 0, &refs_tmp, 0,
+