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[git/mjg.git] / builtin / fetch-pack.c
blob4a6b340ab67622a1e0c57a2bd38e2de4f1ad91a5
1 #include "builtin.h"
2 #include "pkt-line.h"
3 #include "fetch-pack.h"
4 #include "remote.h"
5 #include "connect.h"
6 #include "sha1-array.h"
8 static const char fetch_pack_usage[] =
9 "git fetch-pack [--all] [--stdin] [--quiet | -q] [--keep | -k] [--thin] "
10 "[--include-tag] [--upload-pack=<git-upload-pack>] [--depth=<n>] "
11 "[--no-progress] [--diag-url] [-v] [<host>:]<directory> [<refs>...]";
13 static void add_sought_entry_mem(struct ref ***sought, int *nr, int *alloc,
14 const char *name, int namelen)
16 struct ref *ref = xcalloc(1, sizeof(*ref) + namelen + 1);
17 unsigned char sha1[20];
19 if (namelen > 41 && name[40] == ' ' && !get_sha1_hex(name, sha1)) {
20 hashcpy(ref->old_sha1, sha1);
21 name += 41;
22 namelen -= 41;
25 memcpy(ref->name, name, namelen);
26 ref->name[namelen] = '\0';
27 (*nr)++;
28 ALLOC_GROW(*sought, *nr, *alloc);
29 (*sought)[*nr - 1] = ref;
32 static void add_sought_entry(struct ref ***sought, int *nr, int *alloc,
33 const char *string)
35 add_sought_entry_mem(sought, nr, alloc, string, strlen(string));
38 int cmd_fetch_pack(int argc, const char **argv, const char *prefix)
40 int i, ret;
41 struct ref *ref = NULL;
42 const char *dest = NULL;
43 struct ref **sought = NULL;
44 int nr_sought = 0, alloc_sought = 0;
45 int fd[2];
46 char *pack_lockfile = NULL;
47 char **pack_lockfile_ptr = NULL;
48 struct child_process *conn;
49 struct fetch_pack_args args;
50 struct sha1_array shallow = SHA1_ARRAY_INIT;
52 packet_trace_identity("fetch-pack");
54 memset(&args, 0, sizeof(args));
55 args.uploadpack = "git-upload-pack";
57 for (i = 1; i < argc && *argv[i] == '-'; i++) {
58 const char *arg = argv[i];
60 if (starts_with(arg, "--upload-pack=")) {
61 args.uploadpack = arg + 14;
62 continue;
64 if (starts_with(arg, "--exec=")) {
65 args.uploadpack = arg + 7;
66 continue;
68 if (!strcmp("--quiet", arg) || !strcmp("-q", arg)) {
69 args.quiet = 1;
70 continue;
72 if (!strcmp("--keep", arg) || !strcmp("-k", arg)) {
73 args.lock_pack = args.keep_pack;
74 args.keep_pack = 1;
75 continue;
77 if (!strcmp("--thin", arg)) {
78 args.use_thin_pack = 1;
79 continue;
81 if (!strcmp("--include-tag", arg)) {
82 args.include_tag = 1;
83 continue;
85 if (!strcmp("--all", arg)) {
86 args.fetch_all = 1;
87 continue;
89 if (!strcmp("--stdin", arg)) {
90 args.stdin_refs = 1;
91 continue;
93 if (!strcmp("--diag-url", arg)) {
94 args.diag_url = 1;
95 continue;
97 if (!strcmp("-v", arg)) {
98 args.verbose = 1;
99 continue;
101 if (starts_with(arg, "--depth=")) {
102 args.depth = strtol(arg + 8, NULL, 0);
103 continue;
105 if (!strcmp("--no-progress", arg)) {
106 args.no_progress = 1;
107 continue;
109 if (!strcmp("--stateless-rpc", arg)) {
110 args.stateless_rpc = 1;
111 continue;
113 if (!strcmp("--lock-pack", arg)) {
114 args.lock_pack = 1;
115 pack_lockfile_ptr = &pack_lockfile;
116 continue;
118 if (!strcmp("--check-self-contained-and-connected", arg)) {
119 args.check_self_contained_and_connected = 1;
120 continue;
122 if (!strcmp("--cloning", arg)) {
123 args.cloning = 1;
124 continue;
126 if (!strcmp("--update-shallow", arg)) {
127 args.update_shallow = 1;
128 continue;
130 usage(fetch_pack_usage);
133 if (i < argc)
134 dest = argv[i++];
135 else
136 usage(fetch_pack_usage);
139 * Copy refs from cmdline to growable list, then append any
140 * refs from the standard input:
142 for (; i < argc; i++)
143 add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
144 if (args.stdin_refs) {
145 if (args.stateless_rpc) {
146 /* in stateless RPC mode we use pkt-line to read
147 * from stdin, until we get a flush packet
149 for (;;) {
150 char *line = packet_read_line(0, NULL);
151 if (!line)
152 break;
153 add_sought_entry(&sought, &nr_sought, &alloc_sought, line);
156 else {
157 /* read from stdin one ref per line, until EOF */
158 struct strbuf line = STRBUF_INIT;
159 while (strbuf_getline(&line, stdin, '\n') != EOF)
160 add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
161 strbuf_release(&line);
165 if (args.stateless_rpc) {
166 conn = NULL;
167 fd[0] = 0;
168 fd[1] = 1;
169 } else {
170 int flags = args.verbose ? CONNECT_VERBOSE : 0;
171 if (args.diag_url)
172 flags |= CONNECT_DIAG_URL;
173 conn = git_connect(fd, dest, args.uploadpack,
174 flags);
175 if (!conn)
176 return args.diag_url ? 0 : 1;
178 get_remote_heads(fd[0], NULL, 0, &ref, 0, NULL, &shallow);
180 ref = fetch_pack(&args, fd, conn, ref, dest, sought, nr_sought,
181 &shallow, pack_lockfile_ptr);
182 if (pack_lockfile) {
183 printf("lock %s\n", pack_lockfile);
184 fflush(stdout);
186 if (args.check_self_contained_and_connected &&
187 args.self_contained_and_connected) {
188 printf("connectivity-ok\n");
189 fflush(stdout);
191 close(fd[0]);
192 close(fd[1]);
193 if (finish_connect(conn))
194 return 1;
196 ret = !ref;
199 * If the heads to pull were given, we should have consumed
200 * all of them by matching the remote. Otherwise, 'git fetch
201 * remote no-such-ref' would silently succeed without issuing
202 * an error.
204 for (i = 0; i < nr_sought; i++) {
205 if (!sought[i] || sought[i]->matched)
206 continue;
207 error("no such remote ref %s", sought[i]->name);
208 ret = 1;
211 while (ref) {
212 printf("%s %s\n",
213 sha1_to_hex(ref->old_sha1), ref->name);
214 ref = ref->next;
217 return ret;