git.oblomov.eu Git - git/blob - 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                 usage(fetch_pack_usage);
 106         }
 107
 108         if (i < argc)
 109                 dest = argv[i++];
 110         else
 111                 usage(fetch_pack_usage);
 112
 113         /*
 114          * Copy refs from cmdline to growable list, then append any
 115          * refs from the standard input:
 116          */
 117         for (; i < argc; i++)
 118                 add_sought_entry(&sought, &nr_sought, &alloc_sought, argv[i]);
 119         if (args.stdin_refs) {
 120                 if (args.stateless_rpc) {
 121                         /* in stateless RPC mode we use pkt-line to read
 122                          * from stdin, until we get a flush packet
 123                          */
 124                         for (;;) {
 125                                 char *line = packet_read_line(0, NULL);
 126                                 if (!line)
 127                                         break;
 128                                 add_sought_entry(&sought, &nr_sought,  &alloc_sought, line);
 129                         }
 130                 }
 131                 else {
 132                         /* read from stdin one ref per line, until EOF */
 133                         struct strbuf line = STRBUF_INIT;
 134                         while (strbuf_getline(&line, stdin, '\n') != EOF)
 135                                 add_sought_entry(&sought, &nr_sought, &alloc_sought, line.buf);
 136                         strbuf_release(&line);
 137                 }
 138         }
 139
 140         if (args.stateless_rpc) {
 141                 conn = NULL;
 142                 fd[0] = 0;
 143                 fd[1] = 1;
 144         } else {
 145                 conn = git_connect(fd, dest, args.uploadpack,
 146                                    args.verbose ? CONNECT_VERBOSE : 0);
 147         }
 148
 149         get_remote_heads(fd[0], NULL, 0, &ref, 0, NULL);
 150
 151         ref = fetch_pack(&args, fd, conn, ref, dest,
 152                          sought, nr_sought, pack_lockfile_ptr);
 153         if (pack_lockfile) {
 154                 printf("lock %s\n", pack_lockfile);
 155                 fflush(stdout);
 156         }
 157         close(fd[0]);
 158         close(fd[1]);
 159         if (finish_connect(conn))
 160                 return 1;
 161
 162         ret = !ref;
 163
 164         /*
 165          * If the heads to pull were given, we should have consumed
 166          * all of them by matching the remote.  Otherwise, 'git fetch
 167          * remote no-such-ref' would silently succeed without issuing
 168          * an error.
 169          */
 170         for (i = 0; i < nr_sought; i++) {
 171                 if (!sought[i] || sought[i]->matched)
 172                         continue;
 173                 error("no such remote ref %s", sought[i]->name);
 174                 ret = 1;
 175         }
 176
 177         while (ref) {
 178                 printf("%s %s\n",
 179                        sha1_to_hex(ref->old_sha1), ref->name);
 180                 ref = ref->next;
 181         }
 182
 183         return ret;
 184 }