git svn: catch lack of upstream info for dcommit earlier
[git] / builtin-ls-remote.c
1 #include "builtin.h"
2 #include "cache.h"
3 #include "transport.h"
4 #include "remote.h"
5
6 static const char ls_remote_usage[] =
7 "git ls-remote [--upload-pack=<git-upload-pack>] [<host>:]<directory>";
8
9 /*
10  * Is there one among the list of patterns that match the tail part
11  * of the path?
12  */
13 static int tail_match(const char **pattern, const char *path)
14 {
15         const char *p;
16         char pathbuf[PATH_MAX];
17
18         if (!pattern)
19                 return 1; /* no restriction */
20
21         if (snprintf(pathbuf, sizeof(pathbuf), "/%s", path) > sizeof(pathbuf))
22                 return error("insanely long ref %.*s...", 20, path);
23         while ((p = *(pattern++)) != NULL) {
24                 if (!fnmatch(p, pathbuf, 0))
25                         return 1;
26         }
27         return 0;
28 }
29
30 int cmd_ls_remote(int argc, const char **argv, const char *prefix)
31 {
32         int i;
33         const char *dest = NULL;
34         int nongit;
35         unsigned flags = 0;
36         const char *uploadpack = NULL;
37         const char **pattern = NULL;
38
39         struct remote *remote;
40         struct transport *transport;
41         const struct ref *ref;
42
43         setup_git_directory_gently(&nongit);
44
45         for (i = 1; i < argc; i++) {
46                 const char *arg = argv[i];
47
48                 if (*arg == '-') {
49                         if (!prefixcmp(arg, "--upload-pack=")) {
50                                 uploadpack = arg + 14;
51                                 continue;
52                         }
53                         if (!prefixcmp(arg, "--exec=")) {
54                                 uploadpack = arg + 7;
55                                 continue;
56                         }
57                         if (!strcmp("--tags", arg) || !strcmp("-t", arg)) {
58                                 flags |= REF_TAGS;
59                                 continue;
60                         }
61                         if (!strcmp("--heads", arg) || !strcmp("-h", arg)) {
62                                 flags |= REF_HEADS;
63                                 continue;
64                         }
65                         if (!strcmp("--refs", arg)) {
66                                 flags |= REF_NORMAL;
67                                 continue;
68                         }
69                         usage(ls_remote_usage);
70                 }
71                 dest = arg;
72                 i++;
73                 break;
74         }
75
76         if (!dest)
77                 usage(ls_remote_usage);
78
79         if (argv[i]) {
80                 int j;
81                 pattern = xcalloc(sizeof(const char *), argc - i + 1);
82                 for (j = i; j < argc; j++) {
83                         int len = strlen(argv[j]);
84                         char *p = xmalloc(len + 3);
85                         sprintf(p, "*/%s", argv[j]);
86                         pattern[j - i] = p;
87                 }
88         }
89         remote = nongit ? NULL : remote_get(dest);
90         if (remote && !remote->url_nr)
91                 die("remote %s has no configured URL", dest);
92         transport = transport_get(remote, remote ? remote->url[0] : dest);
93         if (uploadpack != NULL)
94                 transport_set_option(transport, TRANS_OPT_UPLOADPACK, uploadpack);
95
96         ref = transport_get_remote_refs(transport);
97         if (transport_disconnect(transport))
98                 return 1;
99         for ( ; ref; ref = ref->next) {
100                 if (!check_ref_type(ref, flags))
101                         continue;
102                 if (!tail_match(pattern, ref->name))
103                         continue;
104                 printf("%s      %s\n", sha1_to_hex(ref->old_sha1), ref->name);
105         }
106         return 0;
107 }