Andrew's git / gitweb.git /
9e74406fa203a59920cb24884d7893b45d876a70
   1#ifndef TRANSPORT_H
   2#define TRANSPORT_H
   3
   4#include "cache.h"
   5#include "remote.h"
   6
   7struct transport {
   8        struct remote *remote;
   9        const char *url;
  10        void *data;
  11        const struct ref *remote_refs;
  12
  13        /**
  14         * Returns 0 if successful, positive if the option is not
  15         * recognized or is inapplicable, and negative if the option
  16         * is applicable but the value is invalid.
  17         **/
  18        int (*set_option)(struct transport *connection, const char *name,
  19                          const char *value);
  20
  21        /**
  22         * Returns a list of the remote side's refs. In order to allow
  23         * the transport to try to share connections, for_push is a
  24         * hint as to whether the ultimate operation is a push or a fetch.
  25         *
  26         * If the transport is able to determine the remote hash for
  27         * the ref without a huge amount of effort, it should store it
  28         * in the ref's old_sha1 field; otherwise it should be all 0.
  29         **/
  30        struct ref *(*get_refs_list)(struct transport *transport, int for_push);
  31
  32        /**
  33         * Fetch the objects for the given refs. Note that this gets
  34         * an array, and should ignore the list structure.
  35         *
  36         * If the transport did not get hashes for refs in
  37         * get_refs_list(), it should set the old_sha1 fields in the
  38         * provided refs now.
  39         **/
  40        int (*fetch)(struct transport *transport, int refs_nr, struct ref **refs);
  41
  42        /**
  43         * Push the objects and refs. Send the necessary objects, and
  44         * then, for any refs where peer_ref is set and
  45         * peer_ref->new_sha1 is different from old_sha1, tell the
  46         * remote side to update each ref in the list from old_sha1 to
  47         * peer_ref->new_sha1.
  48         *
  49         * Where possible, set the status for each ref appropriately.
  50         *
  51         * The transport must modify new_sha1 in the ref to the new
  52         * value if the remote accepted the change. Note that this
  53         * could be a different value from peer_ref->new_sha1 if the
  54         * process involved generating new commits.
  55         **/
  56        int (*push_refs)(struct transport *transport, struct ref *refs, int flags);
  57        int (*push)(struct transport *connection, int refspec_nr, const char **refspec, int flags);
  58
  59        /** get_refs_list(), fetch(), and push_refs() can keep
  60         * resources (such as a connection) reserved for futher
  61         * use. disconnect() releases these resources.
  62         **/
  63        int (*disconnect)(struct transport *connection);
  64        char *pack_lockfile;
  65        signed verbose : 3;
  66        /* Force progress even if the output is not a tty */
  67        unsigned progress : 1;
  68};
  69
  70#define TRANSPORT_PUSH_ALL 1
  71#define TRANSPORT_PUSH_FORCE 2
  72#define TRANSPORT_PUSH_DRY_RUN 4
  73#define TRANSPORT_PUSH_MIRROR 8
  74#define TRANSPORT_PUSH_VERBOSE 16
  75#define TRANSPORT_PUSH_PORCELAIN 32
  76#define TRANSPORT_PUSH_QUIET 64
  77
  78/* Returns a transport suitable for the url */
  79struct transport *transport_get(struct remote *, const char *);
  80
  81/* Transport options which apply to git:// and scp-style URLs */
  82
  83/* The program to use on the remote side to send a pack */
  84#define TRANS_OPT_UPLOADPACK "uploadpack"
  85
  86/* The program to use on the remote side to receive a pack */
  87#define TRANS_OPT_RECEIVEPACK "receivepack"
  88
  89/* Transfer the data as a thin pack if not null */
  90#define TRANS_OPT_THIN "thin"
  91
  92/* Keep the pack that was transferred if not null */
  93#define TRANS_OPT_KEEP "keep"
  94
  95/* Limit the depth of the fetch if not null */
  96#define TRANS_OPT_DEPTH "depth"
  97
  98/* Aggressively fetch annotated tags if possible */
  99#define TRANS_OPT_FOLLOWTAGS "followtags"
 100
 101/**
 102 * Returns 0 if the option was used, non-zero otherwise. Prints a
 103 * message to stderr if the option is not used.
 104 **/
 105int transport_set_option(struct transport *transport, const char *name,
 106                         const char *value);
 107
 108int transport_push(struct transport *connection,
 109                   int refspec_nr, const char **refspec, int flags,
 110                   int * nonfastforward);
 111
 112const struct ref *transport_get_remote_refs(struct transport *transport);
 113
 114int transport_fetch_refs(struct transport *transport, struct ref *refs);
 115void transport_unlock_pack(struct transport *transport);
 116int transport_disconnect(struct transport *transport);
 117char *transport_anonymize_url(const char *url);
 118
 119/* Transport methods defined outside transport.c */
 120int transport_helper_init(struct transport *transport, const char *name);
 121
 122#endif