Merge branch 'nr/git-cd-to-a-directory'
[git] / builtin / fetch-pack.c
1 #include "builtin.h"
2 #include "pkt-line.h"
3 #include "fetch-pack.h"
4 #include "remote.h"
5 #include "connect.h"
6
7 static const char fetch_pack_usage[] =
8 "git fetch-pack [--all] [--stdin] [--quiet|-q] [--keep|-k] [--thin] "
9 "[--include-tag] [--upload-pack=<git-upload-pack>] [--depth=<n>] "
10 "[--no-progress] [-v] [<host>:]<directory> [<refs>...]";
11
12 static void add_sought_entry_mem(struct ref ***sought, int *nr, int *alloc,
13                                  const char *name, int namelen)
14 {
15         struct ref *ref = xcalloc(1, sizeof(*ref) + namelen + 1);
16
17         memcpy(ref->name, name, namelen);
18         ref->name[namelen] = '\0';
19         (*nr)++;
20         ALLOC_GROW(*sought, *nr, *alloc);
21         (*sought)[*nr - 1] = ref;
22 }
23
24 static void add_sought_entry(struct ref ***sought, int *nr, int *alloc,
25                              const char *string)
26 {
27         add_sought_entry_mem(sought, nr, alloc, string, strlen(string));
28 }
29
30 int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
31 {
32         int i, ret;
33         struct ref *ref = NULL;
34         const char *dest = NULL;
35         struct ref **sought = NULL;
36         int nr_sought = 0, alloc_sought = 0;
37         int fd[2];
38         char *pack_lockfile = NULL;
39         char **pack_lockfile_ptr = NULL;
40         struct child_process *conn;
41         struct fetch_pack_args args;
42
43         packet_trace_identity("fetch-pack");
44
45         memset(&args, 0, sizeof(args));
46         args.uploadpack = "git-upload-pack";
47
48         for (i = 1; i < argc && *argv[i] == '-'; i++) {
49                 const char *arg = argv[i];
50
51                 if (!prefixcmp(arg, "--upload-pack=")) {
52                         args.uploadpack = arg + 14;
53                         continue;
54                 }
55                 if (!prefixcmp(arg, "--exec=")) {
56                         args.uploadpack = arg + 7;
57                         continue;
58                 }
59                 if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
60                         args.quiet = 1;
61                         continue;
62                 }
63                 if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
64                         args.lock_pack = args.keep_pack;
65                         args.keep_pack = 1;
66                         continue;
67                 }
68                 if (!strcmp("--thin", arg)) {
69                         args.use_thin_pack = 1;
70                         continue;
71                 }
72                 if (!strcmp("--include-tag", arg)) {
73                         args.include_tag = 1;
74                         continue;
75                 }
76                 if (!strcmp("--all", arg)) {
77                         args.fetch_all = 1;
78                         continue;
79                 }
80                 if (!strcmp("--stdin", arg)) {
81                         args.stdin_refs = 1;
82                         continue;
83                 }
84                 if (!strcmp("-v", arg)) {
85                         args.verbose = 1;
86                         continue;
87                 }
88                 if (!prefixcmp(arg, "--depth=")) {
89                         args.depth = strtol(arg + 8, NULL, 0);
90                         continue;
91                 }
92                 if (!strcmp("--no-progress", arg)) {
93                         args.no_progress = 1;
94                         continue;
95                 }
96                 if (!strcmp("--stateless-rpc", arg)) {
97                         args.stateless_rpc = 1;
98                         continue;
99                 }
100                 if (!strcmp("--lock-pack", arg)) {
101                         args.lock_pack = 1;
102                         pack_lockfile_ptr = &pack_lockfile;
103                         continue;
104                 }
105                 if (!strcmp("--check-self-contained-and-connected", arg)) {
106                         args.check_self_contained_and_connected = 1;
107                         continue;
108                 }
109                 usage(fetch_pack_usage);
110         }
111
112         if (i < argc)
113                 dest = argv[i++];
114         else
115                 usage(fetch_pack_usage);
116
117         /*
118          * Copy refs from cmdline to growable list, then append any
119          * refs from the standard input:
120          */
121         for (; i < argc; i++)
122                 add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
123         if (args.stdin_refs) {
124                 if (args.stateless_rpc) {
125                         /* in stateless RPC mode we use pkt-line to read
126                          * from stdin, until we get a flush packet
127                          */
128                         for (;;) {
129                                 char *line = packet_read_line(0, NULL);
130                                 if (!line)
131                                         break;
132                                 add_sought_entry(&sought, &nr_sought,  &alloc_sought, line);
133                         }
134                 }
135                 else {
136                         /* read from stdin one ref per line, until EOF */
137                         struct strbuf line = STRBUF_INIT;
138                         while (strbuf_getline(&line, stdin, '\n') != EOF)
139                                 add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
140                         strbuf_release(&line);
141                 }
142         }
143
144         if (args.stateless_rpc) {
145                 conn = NULL;
146                 fd[0] = 0;
147                 fd[1] = 1;
148         } else {
149                 conn = git_connect(fd, dest, args.uploadpack,
150                                    args.verbose ? CONNECT_VERBOSE : 0);
151         }
152
153         get_remote_heads(fd[0], NULL, 0, &ref, 0, NULL);
154
155         ref = fetch_pack(&args, fd, conn, ref, dest,
156                          sought, nr_sought, pack_lockfile_ptr);
157         if (pack_lockfile) {
158                 printf("lock %s\n", pack_lockfile);
159                 fflush(stdout);
160         }
161         if (args.check_self_contained_and_connected &&
162             args.self_contained_and_connected) {
163                 printf("connectivity-ok\n");
164                 fflush(stdout);
165         }
166         close(fd[0]);
167         close(fd[1]);
168         if (finish_connect(conn))
169                 return 1;
170
171         ret = !ref;
172
173         /*
174          * If the heads to pull were given, we should have consumed
175          * all of them by matching the remote.  Otherwise, 'git fetch
176          * remote no-such-ref' would silently succeed without issuing
177          * an error.
178          */
179         for (i = 0; i < nr_sought; i++) {
180                 if (!sought[i] || sought[i]->matched)
181                         continue;
182                 error("no such remote ref %s", sought[i]->name);
183                 ret = 1;
184         }
185
186         while (ref) {
187                 printf("%s %s\n",
188                        sha1_to_hex(ref->old_sha1), ref->name);
189                 ref = ref->next;
190         }
191
192         return ret;
193 }