push: add '--prune' option
[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 * Indicates whether we already called get_refs_list(); set by
24 * transport.c::transport_get_remote_refs().
25 */
26 unsigned got_remote_refs : 1;
27
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28 /**
29 * Returns 0 if successful, positive if the option is not
30 * recognized or is inapplicable, and negative if the option
31 * is applicable but the value is invalid.
32 **/
33 int (*set_option)(struct transport *connection, const char *name,
34 const char *value);
35
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36 /**
37 * Returns a list of the remote side's refs. In order to allow
38 * the transport to try to share connections, for_push is a
39 * hint as to whether the ultimate operation is a push or a fetch.
40 *
41 * If the transport is able to determine the remote hash for
42 * the ref without a huge amount of effort, it should store it
43 * in the ref's old_sha1 field; otherwise it should be all 0.
44 **/
64fcef2d 45 struct ref *(*get_refs_list)(struct transport *transport, int for_push);
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46
47 /**
48 * Fetch the objects for the given refs. Note that this gets
49 * an array, and should ignore the list structure.
50 *
51 * If the transport did not get hashes for refs in
52 * get_refs_list(), it should set the old_sha1 fields in the
53 * provided refs now.
54 **/
55 int (*fetch)(struct transport *transport, int refs_nr, struct ref **refs);
56
57 /**
58 * Push the objects and refs. Send the necessary objects, and
59 * then, for any refs where peer_ref is set and
60 * peer_ref->new_sha1 is different from old_sha1, tell the
61 * remote side to update each ref in the list from old_sha1 to
62 * peer_ref->new_sha1.
63 *
64 * Where possible, set the status for each ref appropriately.
65 *
66 * The transport must modify new_sha1 in the ref to the new
67 * value if the remote accepted the change. Note that this
68 * could be a different value from peer_ref->new_sha1 if the
69 * process involved generating new commits.
70 **/
64fcef2d 71 int (*push_refs)(struct transport *transport, struct ref *refs, int flags);
9b288516 72 int (*push)(struct transport *connection, int refspec_nr, const char **refspec, int flags);
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73 int (*connect)(struct transport *connection, const char *name,
74 const char *executable, int fd[2]);
9b288516 75
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76 /** get_refs_list(), fetch(), and push_refs() can keep
77 * resources (such as a connection) reserved for futher
78 * use. disconnect() releases these resources.
79 **/
9b288516 80 int (*disconnect)(struct transport *connection);
824d5776 81 char *pack_lockfile;
cff7123c 82 signed verbose : 3;
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83 /**
84 * Transports should not set this directly, and should use this
85 * value without having to check isatty(2), -q/--quiet
86 * (transport->verbose < 0), etc. - checking has already been done
87 * in transport_set_verbosity().
88 **/
21188b1e 89 unsigned progress : 1;
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90 /*
91 * If transport is at least potentially smart, this points to
92 * git_transport_options structure to use in case transport
93 * actually turns out to be smart.
94 */
95 struct git_transport_options *smart_options;
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96};
97
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98#define TRANSPORT_PUSH_ALL 1
99#define TRANSPORT_PUSH_FORCE 2
2e13e5d8 100#define TRANSPORT_PUSH_DRY_RUN 4
94c89ba6 101#define TRANSPORT_PUSH_MIRROR 8
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102#define TRANSPORT_PUSH_PORCELAIN 16
103#define TRANSPORT_PUSH_SET_UPSTREAM 32
d2b17b32 104#define TRANSPORT_RECURSE_SUBMODULES_CHECK 64
6ddba5e2 105#define TRANSPORT_PUSH_PRUNE 128
824d5776 106
f1863d0d 107#define TRANSPORT_SUMMARY_WIDTH (2 * DEFAULT_ABBREV + 3)
824d5776 108
9b288516 109/* Returns a transport suitable for the url */
e5f4e214 110struct transport *transport_get(struct remote *, const char *);
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111
112/* Transport options which apply to git:// and scp-style URLs */
113
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114/* The program to use on the remote side to send a pack */
115#define TRANS_OPT_UPLOADPACK "uploadpack"
116
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117/* The program to use on the remote side to receive a pack */
118#define TRANS_OPT_RECEIVEPACK "receivepack"
119
120/* Transfer the data as a thin pack if not null */
121#define TRANS_OPT_THIN "thin"
122
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123/* Keep the pack that was transferred if not null */
124#define TRANS_OPT_KEEP "keep"
125
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126/* Limit the depth of the fetch if not null */
127#define TRANS_OPT_DEPTH "depth"
128
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129/* Aggressively fetch annotated tags if possible */
130#define TRANS_OPT_FOLLOWTAGS "followtags"
131
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132/**
133 * Returns 0 if the option was used, non-zero otherwise. Prints a
134 * message to stderr if the option is not used.
135 **/
136int transport_set_option(struct transport *transport, const char *name,
137 const char *value);
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138void transport_set_verbosity(struct transport *transport, int verbosity,
139 int force_progress);
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140
141int transport_push(struct transport *connection,
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142 int refspec_nr, const char **refspec, int flags,
143 int * nonfastforward);
9b288516 144
4577370e 145const struct ref *transport_get_remote_refs(struct transport *transport);
c29727d5 146
37148311 147int transport_fetch_refs(struct transport *transport, struct ref *refs);
1788c39c 148void transport_unlock_pack(struct transport *transport);
9b288516 149int transport_disconnect(struct transport *transport);
47abd85b 150char *transport_anonymize_url(const char *url);
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151void transport_take_over(struct transport *transport,
152 struct child_process *child);
9b288516 153
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154int transport_connect(struct transport *transport, const char *name,
155 const char *exec, int fd[2]);
156
6eb996b5 157/* Transport methods defined outside transport.c */
c9e388bb 158int transport_helper_init(struct transport *transport, const char *name);
419f37db 159int bidirectional_transfer_loop(int input, int output);
6eb996b5 160
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161/* common methods used by transport.c and builtin-send-pack.c */
162void transport_verify_remote_names(int nr_heads, const char **heads);
163
164void transport_update_tracking_ref(struct remote *remote, struct ref *ref, int verbose);
165
166int transport_refs_pushed(struct ref *ref);
167
168void transport_print_push_status(const char *dest, struct ref *refs,
169 int verbose, int porcelain, int *nonfastforward);
170
36cfda15 171typedef void alternate_ref_fn(const struct ref *, void *);
114a6a88 172extern void for_each_alternate_ref(alternate_ref_fn, void *);
36cfda15 173
9b288516 174#endif