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         const char *cmd, *bundle_file;
  22         int bundle_fd = -1;
  23         char buffer[PATH_MAX];
  24
  25         if (argc < 3)
  26                 usage(builtin_bundle_usage);
  27
  28         cmd = argv[1];
  29         bundle_file = argv[2];
  30         argc -= 2;
  31         argv += 2;
  32
  33         if (prefix && bundle_file[0] != '/') {
  34                 snprintf(buffer, sizeof(buffer), "%s/%s", prefix, bundle_file);
  35                 bundle_file = buffer;
  36         }
  37
  38         memset(&header, 0, sizeof(header));
  39         if (strcmp(cmd, "create") && (bundle_fd =
  40                                 read_bundle_header(bundle_file, &header)) < 0)
  41                 return 1;
  42
  43         if (!strcmp(cmd, "verify")) {
  44                 close(bundle_fd);
  45                 if (verify_bundle(&header, 1))
  46                         return 1;
  47                 fprintf(stderr, "%s is okay\n", bundle_file);
  48                 return 0;
  49         }
  50         if (!strcmp(cmd, "list-heads")) {
  51                 close(bundle_fd);
  52                 return !!list_bundle_refs(&header, argc, argv);
  53         }
  54         if (!strcmp(cmd, "create")) {
  55                 if (!startup_info->have_repository)
  56                         die("Need a repository to create a bundle.");
  57                 return !!create_bundle(&header, bundle_file, argc, argv);
  58         } else if (!strcmp(cmd, "unbundle")) {
  59                 if (!startup_info->have_repository)
  60                         die("Need a repository to unbundle.");
  61                 return !!unbundle(&header, bundle_fd) ||
  62                         list_bundle_refs(&header, argc, argv);
  63         } else
  64                 usage(builtin_bundle_usage);
  65 }