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 git-fetch, git-pull, and git-ls-remote
  10  */
  11
  12 static const char *bundle_usage="git-bundle (create <bundle> <git-rev-list args> | verify <bundle> | list-heads <bundle> [refname]... | unbundle <bundle> [refname]... )";
  13
  14 int cmd_bundle(int argc, const char **argv, const char *prefix)
  15 {
  16         struct bundle_header header;
  17         int nongit = 0;
  18         const char *cmd, *bundle_file;
  19         int bundle_fd = -1;
  20         char buffer[PATH_MAX];
  21
  22         if (argc < 3)
  23                 usage(bundle_usage);
  24
  25         cmd = argv[1];
  26         bundle_file = argv[2];
  27         argc -= 2;
  28         argv += 2;
  29
  30         prefix = setup_git_directory_gently(&nongit);
  31         if (prefix && bundle_file[0] != '/') {
  32                 snprintf(buffer, sizeof(buffer), "%s/%s", prefix, bundle_file);
  33                 bundle_file = buffer;
  34         }
  35
  36         memset(&header, 0, sizeof(header));
  37         if (strcmp(cmd, "create") && (bundle_fd =
  38                                 read_bundle_header(bundle_file, &header)) < 0)
  39                 return 1;
  40
  41         if (!strcmp(cmd, "verify")) {
  42                 close(bundle_fd);
  43                 if (verify_bundle(&header, 1))
  44                         return 1;
  45                 fprintf(stderr, "%s is okay\n", bundle_file);
  46                 return 0;
  47         }
  48         if (!strcmp(cmd, "list-heads")) {
  49                 close(bundle_fd);
  50                 return !!list_bundle_refs(&header, argc, argv);
  51         }
  52         if (!strcmp(cmd, "create")) {
  53                 if (nongit)
  54                         die("Need a repository to create a bundle.");
  55                 return !!create_bundle(&header, bundle_file, argc, argv);
  56         } else if (!strcmp(cmd, "unbundle")) {
  57                 if (nongit)
  58                         die("Need a repository to unbundle.");
  59                 return !!unbundle(&header, bundle_fd) ||
  60                         list_bundle_refs(&header, argc, argv);
  61         } else
  62                 usage(bundle_usage);
  63 }