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It's a bit awkward to run it as an extra step, and HTTP may need to send the wants list several times. Signed-off-by: Carlos Martín Nieto <carlos@cmartin.tk>
106 lines
3.1 KiB
C
106 lines
3.1 KiB
C
/*
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* Copyright (C) 2009-2011 the libgit2 contributors
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*
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* This file is part of libgit2, distributed under the GNU GPL v2 with
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* a Linking Exception. For full terms see the included COPYING file.
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*/
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#ifndef INCLUDE_transport_h__
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#define INCLUDE_transport_h__
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#include "git2/transport.h"
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#include "git2/net.h"
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#include "vector.h"
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#define GIT_CAP_OFS_DELTA "ofs-delta"
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typedef struct git_transport_caps {
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int common:1,
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ofs_delta:1;
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} git_transport_caps;
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/*
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* A day in the life of a network operation
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* ========================================
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*
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* The library gets told to ls-remote/push/fetch on/to/from some
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* remote. We look at the URL of the remote and fill the function
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* table with whatever is appropriate (the remote may be git over git,
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* ssh or http(s). It may even be an hg or svn repository, the library
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* at this level doesn't care, it just calls the helpers.
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*
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* The first call is to ->connect() which connects to the remote,
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* making use of the direction if necessary. This function must also
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* store the remote heads and any other information it needs.
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*
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* The next useful step is to call ->ls() to get the list of
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* references available to the remote. These references may have been
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* collected on connect, or we may build them now. For ls-remote,
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* nothing else is needed other than closing the connection.
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* Otherwise, the higher leves decide which objects we want to
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* have. ->send_have() is used to tell the other end what we have. If
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* we do need to download a pack, ->download_pack() is called.
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*
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* When we're done, we call ->close() to close the
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* connection. ->free() takes care of freeing all the resources.
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*/
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struct git_transport {
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/**
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* Where the repo lives
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*/
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char *url;
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/**
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* Whether we want to push or fetch
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*/
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int direction : 1, /* 0 fetch, 1 push */
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connected : 1;
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/**
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* Connect and store the remote heads
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*/
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int (*connect)(struct git_transport *transport, int dir);
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/**
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* Give a list of references, useful for ls-remote
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*/
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int (*ls)(struct git_transport *transport, git_headarray *headarray);
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/**
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* Push the changes over
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*/
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int (*push)(struct git_transport *transport);
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/**
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* Send a 'done' message
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*/
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int (*send_done)(struct git_transport *transport);
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/**
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* Negotiate the minimal amount of objects that need to be
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* retrieved
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*/
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int (*negotiate_fetch)(struct git_transport *transport, git_repository *repo, git_headarray *list);
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/**
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* Send a flush
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*/
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int (*send_flush)(struct git_transport *transport);
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/**
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* Download the packfile
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*/
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int (*download_pack)(char **out, struct git_transport *transport, git_repository *repo);
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/**
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* Fetch the changes
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*/
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int (*fetch)(struct git_transport *transport);
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/**
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* Close the connection
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*/
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int (*close)(struct git_transport *transport);
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/**
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* Free the associated resources
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*/
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void (*free)(struct git_transport *transport);
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};
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int git_transport_local(struct git_transport **transport);
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int git_transport_git(struct git_transport **transport);
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int git_transport_http(struct git_transport **transport);
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int git_transport_dummy(struct git_transport **transport);
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#endif
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