builtin/bundle.c

   1 #include "builtin.h"
   2 #include "cache.h"
   3 #include "bundle.h"
   4
   5 /*
   6  * Basic handler for bundle files to connect repositories via sneakernet.
   7  * Invocation must include action.
   8  * This function can create a bundle or provide information on an existing
   9  * bundle supporting "fetch", "pull", and "ls-remote".
  10  */
  11
  12 static const char builtin_bundle_usage[] =
  13   "git bundle create <file> <git-rev-list args>\n"
  14   "   or: git bundle verify <file>\n"
  15   "   or: git bundle list-heads <file> [refname...]\n"
  16   "   or: git bundle unbundle <file> [refname...]";
  17
  18 int cmd_bundle(int argc, const char **argv, const char *prefix)
  19 {
  20         struct bundle_header header;
  21         int nongit;
  22         const char *cmd, *bundle_file;
  23         int bundle_fd = -1;
  24         char buffer[PATH_MAX];
  25
  26         if (argc < 3)
  27                 usage(builtin_bundle_usage);
  28
  29         cmd = argv[1];
  30         bundle_file = argv[2];
  31         argc -= 2;
  32         argv += 2;
  33
  34         prefix = setup_git_directory_gently(&nongit);
  35         if (prefix && bundle_file[0] != '/') {
  36                 snprintf(buffer, sizeof(buffer), "%s/%s", prefix, bundle_file);
  37                 bundle_file = buffer;
  38         }
  39
  40         memset(&header, 0, sizeof(header));
  41         if (strcmp(cmd, "create") && (bundle_fd =
  42                                 read_bundle_header(bundle_file, &header)) < 0)
  43                 return 1;
  44
  45         if (!strcmp(cmd, "verify")) {
  46                 close(bundle_fd);
  47                 if (verify_bundle(&header, 1))
  48                         return 1;
  49                 fprintf(stderr, "%s is okay\n", bundle_file);
  50                 return 0;
  51         }
  52         if (!strcmp(cmd, "list-heads")) {
  53                 close(bundle_fd);
  54                 return !!list_bundle_refs(&header, argc, argv);
  55         }
  56         if (!strcmp(cmd, "create")) {
  57                 if (nongit)
  58                         die("Need a repository to create a bundle.");
  59                 return !!create_bundle(&header, bundle_file, argc, argv);
  60         } else if (!strcmp(cmd, "unbundle")) {
  61                 if (nongit)
  62                         die("Need a repository to unbundle.");
  63                 return !!unbundle(&header, bundle_fd) ||
  64                         list_bundle_refs(&header, argc, argv);
  65         } else
  66                 usage(builtin_bundle_usage);
  67 }