2 * Copyright (C) the libgit2 contributors. All rights reserved.
4 * This file is part of libgit2, distributed under the GNU GPL v2 with
5 * a Linking Exception. For full terms see the included COPYING file.
10 #include "git2/revwalk.h"
11 #include "git2/transport.h"
19 #include "repository.h"
22 struct filter_payload
{
24 const git_refspec
*spec
, *tagspec
;
29 static int filter_ref__cb(git_remote_head
*head
, void *payload
)
31 struct filter_payload
*p
= payload
;
34 if (!git_reference_is_valid_name(head
->name
))
37 if (!p
->found_head
&& strcmp(head
->name
, GIT_HEAD_FILE
) == 0)
39 else if (p
->remote
->download_tags
== GIT_REMOTE_DOWNLOAD_TAGS_ALL
) {
41 * If tagopt is --tags, then we only use the default
42 * tags refspec and ignore the remote's
44 if (git_refspec_src_matches(p
->tagspec
, head
->name
))
48 } else if (git_remote__matching_refspec(p
->remote
, head
->name
))
54 /* If we have the object, mark it so we don't ask for it */
55 if (git_odb_exists(p
->odb
, &head
->oid
))
58 p
->remote
->need_pack
= 1;
60 return git_vector_insert(&p
->remote
->refs
, head
);
63 static int filter_wants(git_remote
*remote
)
65 struct filter_payload p
;
69 git_vector_clear(&remote
->refs
);
70 if (git_refspec__parse(&tagspec
, GIT_REFSPEC_TAGS
, true) < 0)
74 * The fetch refspec can be NULL, and what this means is that the
75 * user didn't specify one. This is fine, as it means that we're
76 * not interested in any particular branch but just the remote's
77 * HEAD, which will be stored in FETCH_HEAD after the fetch.
83 if (git_repository_odb__weakptr(&p
.odb
, remote
->repo
) < 0)
86 error
= git_remote_ls(remote
, filter_ref__cb
, &p
);
89 git_refspec__free(&tagspec
);
95 * In this first version, we push all our refs in and start sending
96 * them out. When we get an ACK we hide that commit and continue
97 * traversing until we're done
99 int git_fetch_negotiate(git_remote
*remote
)
101 git_transport
*t
= remote
->transport
;
103 if (filter_wants(remote
) < 0) {
104 giterr_set(GITERR_NET
, "Failed to filter the reference list for wants");
108 /* Don't try to negotiate when we don't want anything */
109 if (remote
->refs
.length
== 0 || !remote
->need_pack
)
113 * Now we have everything set up so we can start tell the
114 * server what we want and what we have.
116 return t
->negotiate_fetch(t
,
118 (const git_remote_head
* const *)remote
->refs
.contents
,
119 remote
->refs
.length
);
122 int git_fetch_download_pack(git_remote
*remote
)
124 git_transport
*t
= remote
->transport
;
126 if(!remote
->need_pack
)
129 return t
->download_pack(t
, remote
->repo
, &remote
->stats
,
130 remote
->callbacks
.transfer_progress
, remote
->callbacks
.payload
);