builtin/bundle.c

   1 #include "builtin.h"
   2 #include "strvec.h"
   3 #include "parse-options.h"
   4 #include "cache.h"
   5 #include "bundle.h"
   6
   7 /*
   8  * Basic handler for bundle files to connect repositories via sneakernet.
   9  * Invocation must include action.
  10  * This function can create a bundle or provide information on an existing
  11  * bundle supporting "fetch", "pull", and "ls-remote".
  12  */
  13
  14 static const char * const builtin_bundle_usage[] = {
  15   N_("git bundle create [<options>] <file> <git-rev-list args>"),
  16   N_("git bundle verify [<options>] <file>"),
  17   N_("git bundle list-heads <file> [<refname>...]"),
  18   N_("git bundle unbundle <file> [<refname>...]"),
  19   NULL
  20 };
  21
  22 static const char * const builtin_bundle_create_usage[] = {
  23   N_("git bundle create [<options>] <file> <git-rev-list args>"),
  24   NULL
  25 };
  26
  27 static const char * const builtin_bundle_verify_usage[] = {
  28   N_("git bundle verify [<options>] <file>"),
  29   NULL
  30 };
  31
  32 static const char * const builtin_bundle_list_heads_usage[] = {
  33   N_("git bundle list-heads <file> [<refname>...]"),
  34   NULL
  35 };
  36
  37 static const char * const builtin_bundle_unbundle_usage[] = {
  38   N_("git bundle unbundle <file> [<refname>...]"),
  39   NULL
  40 };
  41
  42 static int verbose;
  43
  44 static int parse_options_cmd_bundle(int argc,
  45                 const char **argv,
  46                 const char* prefix,
  47                 const char * const usagestr[],
  48                 const struct option options[],
  49                 const char **bundle_file) {
  50         int newargc;
  51         newargc = parse_options(argc, argv, NULL, options, usagestr,
  52                              PARSE_OPT_STOP_AT_NON_OPTION);
  53         if (argc < 1)
  54                 usage_with_options(usagestr, options);
  55         *bundle_file = prefix_filename(prefix, argv[0]);
  56         return newargc;
  57 }
  58
  59 static int cmd_bundle_create(int argc, const char **argv, const char *prefix) {
  60         int all_progress_implied = 0;
  61         int progress = isatty(STDERR_FILENO);
  62         struct strvec pack_opts;
  63         int version = -1;
  64
  65         struct option options[] = {
  66                 OPT_SET_INT('q', "quiet", &progress,
  67                             N_("do not show progress meter"), 0),
  68                 OPT_SET_INT(0, "progress", &progress,
  69                             N_("show progress meter"), 1),
  70                 OPT_SET_INT(0, "all-progress", &progress,
  71                             N_("show progress meter during object writing phase"), 2),
  72                 OPT_BOOL(0, "all-progress-implied",
  73                          &all_progress_implied,
  74                          N_("similar to --all-progress when progress meter is shown")),
  75                 OPT_INTEGER(0, "version", &version,
  76                             N_("specify bundle format version")),
  77                 OPT_END()
  78         };
  79         const char* bundle_file;
  80
  81         argc = parse_options_cmd_bundle(argc, argv, prefix,
  82                         builtin_bundle_create_usage, options, &bundle_file);
  83         /* bundle internals use argv[1] as further parameters */
  84
  85         strvec_init(&pack_opts);
  86         if (progress == 0)
  87                 strvec_push(&pack_opts, "--quiet");
  88         else if (progress == 1)
  89                 strvec_push(&pack_opts, "--progress");
  90         else if (progress == 2)
  91                 strvec_push(&pack_opts, "--all-progress");
  92         if (progress && all_progress_implied)
  93                 strvec_push(&pack_opts, "--all-progress-implied");
  94
  95         if (!startup_info->have_repository)
  96                 die(_("Need a repository to create a bundle."));
  97         return !!create_bundle(the_repository, bundle_file, argc, argv, &pack_opts, version);
  98 }
  99
 100 static int cmd_bundle_verify(int argc, const char **argv, const char *prefix) {
 101         struct bundle_header header;
 102         int bundle_fd = -1;
 103         int quiet = 0;
 104
 105         struct option options[] = {
 106                 OPT_BOOL('q', "quiet", &quiet,
 107                             N_("do not show bundle details")),
 108                 OPT_END()
 109         };
 110         const char* bundle_file;
 111
 112         argc = parse_options_cmd_bundle(argc, argv, prefix,
 113                         builtin_bundle_verify_usage, options, &bundle_file);
 114         /* bundle internals use argv[1] as further parameters */
 115
 116         memset(&header, 0, sizeof(header));
 117         if ((bundle_fd = read_bundle_header(bundle_file, &header)) < 0)
 118                 return 1;
 119         close(bundle_fd);
 120         if (verify_bundle(the_repository, &header, !quiet))
 121                 return 1;
 122         fprintf(stderr, _("%s is okay\n"), bundle_file);
 123         return 0;
 124 }
 125
 126 static int cmd_bundle_list_heads(int argc, const char **argv, const char *prefix) {
 127         struct bundle_header header;
 128         int bundle_fd = -1;
 129
 130         struct option options[] = {
 131                 OPT_END()
 132         };
 133         const char* bundle_file;
 134
 135         argc = parse_options_cmd_bundle(argc, argv, prefix,
 136                         builtin_bundle_list_heads_usage, options, &bundle_file);
 137         /* bundle internals use argv[1] as further parameters */
 138
 139         memset(&header, 0, sizeof(header));
 140         if ((bundle_fd = read_bundle_header(bundle_file, &header)) < 0)
 141                 return 1;
 142         close(bundle_fd);
 143         return !!list_bundle_refs(&header, argc, argv);
 144 }
 145
 146 static int cmd_bundle_unbundle(int argc, const char **argv, const char *prefix) {
 147         struct bundle_header header;
 148         int bundle_fd = -1;
 149
 150         struct option options[] = {
 151                 OPT_END()
 152         };
 153         const char* bundle_file;
 154
 155         argc = parse_options_cmd_bundle(argc, argv, prefix,
 156                         builtin_bundle_unbundle_usage, options, &bundle_file);
 157         /* bundle internals use argv[1] as further parameters */
 158
 159         memset(&header, 0, sizeof(header));
 160         if ((bundle_fd = read_bundle_header(bundle_file, &header)) < 0)
 161                 return 1;
 162         if (!startup_info->have_repository)
 163                 die(_("Need a repository to unbundle."));
 164         return !!unbundle(the_repository, &header, bundle_fd, 0) ||
 165                 list_bundle_refs(&header, argc, argv);
 166 }
 167
 168 int cmd_bundle(int argc, const char **argv, const char *prefix)
 169 {
 170         struct option options[] = {
 171                 OPT__VERBOSE(&verbose, N_("be verbose; must be placed before a subcommand")),
 172                 OPT_END()
 173         };
 174         int result;
 175
 176         argc = parse_options(argc, argv, prefix, options, builtin_bundle_usage,
 177                 PARSE_OPT_STOP_AT_NON_OPTION);
 178
 179         packet_trace_identity("bundle");
 180
 181         if (argc < 2)
 182                 usage_with_options(builtin_bundle_usage, options);
 183
 184         else if (!strcmp(argv[0], "create"))
 185                 result = cmd_bundle_create(argc, argv, prefix);
 186         else if (!strcmp(argv[0], "verify"))
 187                 result = cmd_bundle_verify(argc, argv, prefix);
 188         else if (!strcmp(argv[0], "list-heads"))
 189                 result = cmd_bundle_list_heads(argc, argv, prefix);
 190         else if (!strcmp(argv[0], "unbundle"))
 191                 result = cmd_bundle_unbundle(argc, argv, prefix);
 192         else {
 193                 error(_("Unknown subcommand: %s"), argv[0]);
 194                 usage_with_options(builtin_bundle_usage, options);
 195         }
 196         return result ? 1 : 0;
 197 }