Merge branch 'nd/submodule-helper-incomplete-line-fix'
[git] / builtin / ls-remote.c
1 #include "builtin.h"
2 #include "cache.h"
3 #include "transport.h"
4 #include "ref-filter.h"
5 #include "remote.h"
6 #include "refs.h"
7
8 static const char * const ls_remote_usage[] = {
9         N_("git ls-remote [--heads] [--tags] [--refs] [--upload-pack=<exec>]\n"
10            "                     [-q | --quiet] [--exit-code] [--get-url]\n"
11            "                     [--symref] [<repository> [<refs>...]]"),
12         NULL
13 };
14
15 /*
16  * Is there one among the list of patterns that match the tail part
17  * of the path?
18  */
19 static int tail_match(const char **pattern, const char *path)
20 {
21         const char *p;
22         char *pathbuf;
23
24         if (!pattern)
25                 return 1; /* no restriction */
26
27         pathbuf = xstrfmt("/%s", path);
28         while ((p = *(pattern++)) != NULL) {
29                 if (!wildmatch(p, pathbuf, 0)) {
30                         free(pathbuf);
31                         return 1;
32                 }
33         }
34         free(pathbuf);
35         return 0;
36 }
37
38 int cmd_ls_remote(int argc, const char **argv, const char *prefix)
39 {
40         const char *dest = NULL;
41         unsigned flags = 0;
42         int get_url = 0;
43         int quiet = 0;
44         int status = 0;
45         int show_symref_target = 0;
46         const char *uploadpack = NULL;
47         const char **pattern = NULL;
48         struct argv_array ref_prefixes = ARGV_ARRAY_INIT;
49         int i;
50         struct string_list server_options = STRING_LIST_INIT_DUP;
51
52         struct remote *remote;
53         struct transport *transport;
54         const struct ref *ref;
55         struct ref_array ref_array;
56         static struct ref_sorting *sorting = NULL, **sorting_tail = &sorting;
57
58         struct option options[] = {
59                 OPT__QUIET(&quiet, N_("do not print remote URL")),
60                 OPT_STRING(0, "upload-pack", &uploadpack, N_("exec"),
61                            N_("path of git-upload-pack on the remote host")),
62                 { OPTION_STRING, 0, "exec", &uploadpack, N_("exec"),
63                            N_("path of git-upload-pack on the remote host"),
64                            PARSE_OPT_HIDDEN },
65                 OPT_BIT('t', "tags", &flags, N_("limit to tags"), REF_TAGS),
66                 OPT_BIT('h', "heads", &flags, N_("limit to heads"), REF_HEADS),
67                 OPT_BIT(0, "refs", &flags, N_("do not show peeled tags"), REF_NORMAL),
68                 OPT_BOOL(0, "get-url", &get_url,
69                          N_("take url.<base>.insteadOf into account")),
70                 OPT_REF_SORT(sorting_tail),
71                 OPT_SET_INT_F(0, "exit-code", &status,
72                               N_("exit with exit code 2 if no matching refs are found"),
73                               2, PARSE_OPT_NOCOMPLETE),
74                 OPT_BOOL(0, "symref", &show_symref_target,
75                          N_("show underlying ref in addition to the object pointed by it")),
76                 OPT_STRING_LIST('o', "server-option", &server_options, N_("server-specific"), N_("option to transmit")),
77                 OPT_END()
78         };
79
80         memset(&ref_array, 0, sizeof(ref_array));
81
82         argc = parse_options(argc, argv, prefix, options, ls_remote_usage,
83                              PARSE_OPT_STOP_AT_NON_OPTION);
84         dest = argv[0];
85
86         if (argc > 1) {
87                 int i;
88                 pattern = xcalloc(argc, sizeof(const char *));
89                 for (i = 1; i < argc; i++) {
90                         pattern[i - 1] = xstrfmt("*/%s", argv[i]);
91                 }
92         }
93
94         if (flags & REF_TAGS)
95                 argv_array_push(&ref_prefixes, "refs/tags/");
96         if (flags & REF_HEADS)
97                 argv_array_push(&ref_prefixes, "refs/heads/");
98
99         remote = remote_get(dest);
100         if (!remote) {
101                 if (dest)
102                         die("bad repository '%s'", dest);
103                 die("No remote configured to list refs from.");
104         }
105         if (!remote->url_nr)
106                 die("remote %s has no configured URL", dest);
107
108         if (get_url) {
109                 printf("%s\n", *remote->url);
110                 UNLEAK(sorting);
111                 return 0;
112         }
113
114         transport = transport_get(remote, NULL);
115         if (uploadpack != NULL)
116                 transport_set_option(transport, TRANS_OPT_UPLOADPACK, uploadpack);
117         if (server_options.nr)
118                 transport->server_options = &server_options;
119
120         ref = transport_get_remote_refs(transport, &ref_prefixes);
121         if (transport_disconnect(transport)) {
122                 UNLEAK(sorting);
123                 return 1;
124         }
125
126         if (!dest && !quiet)
127                 fprintf(stderr, "From %s\n", *remote->url);
128         for ( ; ref; ref = ref->next) {
129                 struct ref_array_item *item;
130                 if (!check_ref_type(ref, flags))
131                         continue;
132                 if (!tail_match(pattern, ref->name))
133                         continue;
134                 item = ref_array_push(&ref_array, ref->name, &ref->old_oid);
135                 item->symref = xstrdup_or_null(ref->symref);
136         }
137
138         if (sorting)
139                 ref_array_sort(sorting, &ref_array);
140
141         for (i = 0; i < ref_array.nr; i++) {
142                 const struct ref_array_item *ref = ref_array.items[i];
143                 if (show_symref_target && ref->symref)
144                         printf("ref: %s\t%s\n", ref->symref, ref->refname);
145                 printf("%s\t%s\n", oid_to_hex(&ref->objectname), ref->refname);
146                 status = 0; /* we found something */
147         }
148
149         UNLEAK(sorting);
150         ref_array_clear(&ref_array);
151         return status;
152 }