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-rw-r--r--transport-internal.h61
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+#ifndef TRANSPORT_INTERNAL_H
+#define TRANSPORT_INTERNAL_H
+
+struct ref;
+struct transport;
+
+struct transport_vtable {
+ /**
+ * Returns 0 if successful, positive if the option is not
+ * recognized or is inapplicable, and negative if the option
+ * is applicable but the value is invalid.
+ **/
+ int (*set_option)(struct transport *connection, const char *name,
+ const char *value);
+ /**
+ * Returns a list of the remote side's refs. In order to allow
+ * the transport to try to share connections, for_push is a
+ * hint as to whether the ultimate operation is a push or a fetch.
+ *
+ * If the transport is able to determine the remote hash for
+ * the ref without a huge amount of effort, it should store it
+ * in the ref's old_sha1 field; otherwise it should be all 0.
+ **/
+ struct ref *(*get_refs_list)(struct transport *transport, int for_push);
+
+ /**
+ * Fetch the objects for the given refs. Note that this gets
+ * an array, and should ignore the list structure.
+ *
+ * If the transport did not get hashes for refs in
+ * get_refs_list(), it should set the old_sha1 fields in the
+ * provided refs now.
+ **/
+ int (*fetch)(struct transport *transport, int refs_nr, struct ref **refs);
+
+ /**
+ * Push the objects and refs. Send the necessary objects, and
+ * then, for any refs where peer_ref is set and
+ * peer_ref->new_oid is different from old_oid, tell the
+ * remote side to update each ref in the list from old_oid to
+ * peer_ref->new_oid.
+ *
+ * Where possible, set the status for each ref appropriately.
+ *
+ * The transport must modify new_sha1 in the ref to the new
+ * value if the remote accepted the change. Note that this
+ * could be a different value from peer_ref->new_oid if the
+ * process involved generating new commits.
+ **/
+ int (*push_refs)(struct transport *transport, struct ref *refs, int flags);
+ int (*connect)(struct transport *connection, const char *name,
+ const char *executable, int fd[2]);
+
+ /** get_refs_list(), fetch(), and push_refs() can keep
+ * resources (such as a connection) reserved for further
+ * use. disconnect() releases these resources.
+ **/
+ int (*disconnect)(struct transport *connection);
+};
+
+#endif