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  * pattern is a list of tail-part of accepted refnames.  Is there one
  11  * among them that is a suffix of the path?  Directory boundary must
  12  * be honored when checking this match.  IOW, patterns "master" and
  13  * "sa/master" both match path "refs/hold/sa/master".  On the other
  14  * hand, path "refs/hold/foosa/master" is matched by "master" but not
  15  * by "sa/master".
  16  */
  17
  18 static int tail_match(const char **pattern, const char *path)
  19 {
  20         int pathlen;
  21         const char *p;
  22
  23         if (!*pattern)
  24                 return 1; /* no restriction */
  25
  26         for (pathlen = strlen(path); (p = *pattern); pattern++) {
  27                 int pfxlen = pathlen - strlen(p);
  28                 if (pfxlen < 0)
  29                         continue; /* pattern is longer, will never match */
  30                 if (strcmp(path + pfxlen, p))
  31                         continue; /* no tail match */
  32                 if (!pfxlen || path[pfxlen - 1] == '/')
  33                         return 1; /* fully match at directory boundary */
  34         }
  35         return 0;
  36 }
  37
  38 int cmd_ls_remote(int argc, const char **argv, const char *prefix)
  39 {
  40         int i;
  41         const char *dest = NULL;
  42         int nongit = 0;
  43         unsigned flags = 0;
  44         const char *uploadpack = NULL;
  45         const char **pattern = NULL;
  46
  47         struct remote *remote;
  48         struct transport *transport;
  49         const struct ref *ref;
  50
  51         setup_git_directory_gently(&nongit);
  52
  53         for (i = 1; i < argc; i++) {
  54                 const char *arg = argv[i];
  55
  56                 if (*arg == '-') {
  57                         if (!prefixcmp(arg, "--upload-pack=")) {
  58                                 uploadpack = arg + 14;
  59                                 continue;
  60                         }
  61                         if (!prefixcmp(arg, "--exec=")) {
  62                                 uploadpack = arg + 7;
  63                                 continue;
  64                         }
  65                         if (!strcmp("--tags", arg)) {
  66                                 flags |= REF_TAGS;
  67                                 continue;
  68                         }
  69                         if (!strcmp("--heads", arg)) {
  70                                 flags |= REF_HEADS;
  71                                 continue;
  72                         }
  73                         if (!strcmp("--refs", arg)) {
  74                                 flags |= REF_NORMAL;
  75                                 continue;
  76                         }
  77                         usage(ls_remote_usage);
  78                 }
  79                 dest = arg;
  80                 break;
  81         }
  82
  83         if (!dest)
  84                 usage(ls_remote_usage);
  85         pattern = argv + i + 1;
  86         remote = nongit ? NULL : remote_get(dest);
  87         if (remote && !remote->url_nr)
  88                 die("remote %s has no configured URL", dest);
  89         transport = transport_get(remote, remote ? remote->url[0] : dest);
  90         if (uploadpack != NULL)
  91                 transport_set_option(transport, TRANS_OPT_UPLOADPACK, uploadpack);
  92
  93         ref = transport_get_remote_refs(transport);
  94
  95         if (!ref)
  96                 return 1;
  97
  98         for ( ; ref; ref = ref->next) {
  99                 if (!check_ref_type(ref, flags))
 100                         continue;
 101                 if (!tail_match(pattern, ref->name))
 102                         continue;
 103                 printf("%s      %s\n", sha1_to_hex(ref->old_sha1), ref->name);
 104         }
 105         return 0;
 106 }