fetch and pull: learn --progress
[git/git.git] / transport.h
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1#ifndef TRANSPORT_H
2#define TRANSPORT_H
3
4#include "cache.h"
5#include "remote.h"
6
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7struct git_transport_options {
8 unsigned thin : 1;
9 unsigned keep : 1;
10 unsigned followtags : 1;
11 int depth;
12 const char *uploadpack;
13 const char *receivepack;
14};
15
9b288516 16struct transport {
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17 struct remote *remote;
18 const char *url;
9b288516 19 void *data;
4577370e 20 const struct ref *remote_refs;
9b288516 21
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22 /**
23 * Returns 0 if successful, positive if the option is not
24 * recognized or is inapplicable, and negative if the option
25 * is applicable but the value is invalid.
26 **/
27 int (*set_option)(struct transport *connection, const char *name,
28 const char *value);
29
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30 /**
31 * Returns a list of the remote side's refs. In order to allow
32 * the transport to try to share connections, for_push is a
33 * hint as to whether the ultimate operation is a push or a fetch.
34 *
35 * If the transport is able to determine the remote hash for
36 * the ref without a huge amount of effort, it should store it
37 * in the ref's old_sha1 field; otherwise it should be all 0.
38 **/
64fcef2d 39 struct ref *(*get_refs_list)(struct transport *transport, int for_push);
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40
41 /**
42 * Fetch the objects for the given refs. Note that this gets
43 * an array, and should ignore the list structure.
44 *
45 * If the transport did not get hashes for refs in
46 * get_refs_list(), it should set the old_sha1 fields in the
47 * provided refs now.
48 **/
49 int (*fetch)(struct transport *transport, int refs_nr, struct ref **refs);
50
51 /**
52 * Push the objects and refs. Send the necessary objects, and
53 * then, for any refs where peer_ref is set and
54 * peer_ref->new_sha1 is different from old_sha1, tell the
55 * remote side to update each ref in the list from old_sha1 to
56 * peer_ref->new_sha1.
57 *
58 * Where possible, set the status for each ref appropriately.
59 *
60 * The transport must modify new_sha1 in the ref to the new
61 * value if the remote accepted the change. Note that this
62 * could be a different value from peer_ref->new_sha1 if the
63 * process involved generating new commits.
64 **/
64fcef2d 65 int (*push_refs)(struct transport *transport, struct ref *refs, int flags);
9b288516 66 int (*push)(struct transport *connection, int refspec_nr, const char **refspec, int flags);
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67 int (*connect)(struct transport *connection, const char *name,
68 const char *executable, int fd[2]);
9b288516 69
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70 /** get_refs_list(), fetch(), and push_refs() can keep
71 * resources (such as a connection) reserved for futher
72 * use. disconnect() releases these resources.
73 **/
9b288516 74 int (*disconnect)(struct transport *connection);
824d5776 75 char *pack_lockfile;
cff7123c 76 signed verbose : 3;
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77 /**
78 * Transports should not set this directly, and should use this
79 * value without having to check isatty(2), -q/--quiet
80 * (transport->verbose < 0), etc. - checking has already been done
81 * in transport_set_verbosity().
82 **/
21188b1e 83 unsigned progress : 1;
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84 /*
85 * If transport is at least potentially smart, this points to
86 * git_transport_options structure to use in case transport
87 * actually turns out to be smart.
88 */
89 struct git_transport_options *smart_options;
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90};
91
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92#define TRANSPORT_PUSH_ALL 1
93#define TRANSPORT_PUSH_FORCE 2
2e13e5d8 94#define TRANSPORT_PUSH_DRY_RUN 4
94c89ba6 95#define TRANSPORT_PUSH_MIRROR 8
1965ff74 96#define TRANSPORT_PUSH_PORCELAIN 32
e9fcd1e2 97#define TRANSPORT_PUSH_SET_UPSTREAM 128
824d5776 98
9b288516 99/* Returns a transport suitable for the url */
e5f4e214 100struct transport *transport_get(struct remote *, const char *);
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101
102/* Transport options which apply to git:// and scp-style URLs */
103
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104/* The program to use on the remote side to send a pack */
105#define TRANS_OPT_UPLOADPACK "uploadpack"
106
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107/* The program to use on the remote side to receive a pack */
108#define TRANS_OPT_RECEIVEPACK "receivepack"
109
110/* Transfer the data as a thin pack if not null */
111#define TRANS_OPT_THIN "thin"
112
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113/* Keep the pack that was transferred if not null */
114#define TRANS_OPT_KEEP "keep"
115
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116/* Limit the depth of the fetch if not null */
117#define TRANS_OPT_DEPTH "depth"
118
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119/* Aggressively fetch annotated tags if possible */
120#define TRANS_OPT_FOLLOWTAGS "followtags"
121
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122/**
123 * Returns 0 if the option was used, non-zero otherwise. Prints a
124 * message to stderr if the option is not used.
125 **/
126int transport_set_option(struct transport *transport, const char *name,
127 const char *value);
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128void transport_set_verbosity(struct transport *transport, int verbosity,
129 int force_progress);
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130
131int transport_push(struct transport *connection,
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132 int refspec_nr, const char **refspec, int flags,
133 int * nonfastforward);
9b288516 134
4577370e 135const struct ref *transport_get_remote_refs(struct transport *transport);
c29727d5 136
37148311 137int transport_fetch_refs(struct transport *transport, struct ref *refs);
1788c39c 138void transport_unlock_pack(struct transport *transport);
9b288516 139int transport_disconnect(struct transport *transport);
47abd85b 140char *transport_anonymize_url(const char *url);
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141void transport_take_over(struct transport *transport,
142 struct child_process *child);
9b288516 143
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144int transport_connect(struct transport *transport, const char *name,
145 const char *exec, int fd[2]);
146
6eb996b5 147/* Transport methods defined outside transport.c */
c9e388bb 148int transport_helper_init(struct transport *transport, const char *name);
6eb996b5 149
9b288516 150#endif