git.oblomov.eu Git - git/blob - builtin/commit-graph.c

   1 #include "builtin.h"
   2 #include "config.h"
   3 #include "dir.h"
   4 #include "lockfile.h"
   5 #include "parse-options.h"
   6 #include "repository.h"
   7 #include "commit-graph.h"
   8 #include "object-store.h"
   9
  10 static char const * const builtin_commit_graph_usage[] = {
  11         N_("git commit-graph verify [--object-dir <objdir>] [--shallow] [--[no-]progress]"),
  12         N_("git commit-graph write [--object-dir <objdir>] [--append] "
  13            "[--split[=<strategy>]] [--reachable|--stdin-packs|--stdin-commits] "
  14            "[--[no-]progress] [--[no-]check-oids] <split options>"),
  15         NULL
  16 };
  17
  18 static const char * const builtin_commit_graph_verify_usage[] = {
  19         N_("git commit-graph verify [--object-dir <objdir>] [--shallow] [--[no-]progress]"),
  20         NULL
  21 };
  22
  23 static const char * const builtin_commit_graph_write_usage[] = {
  24         N_("git commit-graph write [--object-dir <objdir>] [--append] "
  25            "[--split[=<strategy>]] [--reachable|--stdin-packs|--stdin-commits] "
  26            "[--[no-]progress] [--[no-]check-oids] <split options>"),
  27         NULL
  28 };
  29
  30 static struct opts_commit_graph {
  31         const char *obj_dir;
  32         int reachable;
  33         int stdin_packs;
  34         int stdin_commits;
  35         int append;
  36         int split;
  37         int shallow;
  38         int progress;
  39         int check_oids;
  40 } opts;
  41
  42 static struct object_directory *find_odb(struct repository *r,
  43                                          const char *obj_dir)
  44 {
  45         struct object_directory *odb;
  46         char *obj_dir_real = real_pathdup(obj_dir, 1);
  47
  48         prepare_alt_odb(r);
  49         for (odb = r->objects->odb; odb; odb = odb->next) {
  50                 if (!strcmp(obj_dir_real, real_path(odb->path)))
  51                         break;
  52         }
  53
  54         free(obj_dir_real);
  55
  56         if (!odb)
  57                 die(_("could not find object directory matching %s"), obj_dir);
  58         return odb;
  59 }
  60
  61 static int graph_verify(int argc, const char **argv)
  62 {
  63         struct commit_graph *graph = NULL;
  64         struct object_directory *odb = NULL;
  65         char *graph_name;
  66         int open_ok;
  67         int fd;
  68         struct stat st;
  69         int flags = 0;
  70
  71         static struct option builtin_commit_graph_verify_options[] = {
  72                 OPT_STRING(0, "object-dir", &opts.obj_dir,
  73                            N_("dir"),
  74                            N_("The object directory to store the graph")),
  75                 OPT_BOOL(0, "shallow", &opts.shallow,
  76                          N_("if the commit-graph is split, only verify the tip file")),
  77                 OPT_BOOL(0, "progress", &opts.progress, N_("force progress reporting")),
  78                 OPT_END(),
  79         };
  80
  81         trace2_cmd_mode("verify");
  82
  83         opts.progress = isatty(2);
  84         argc = parse_options(argc, argv, NULL,
  85                              builtin_commit_graph_verify_options,
  86                              builtin_commit_graph_verify_usage, 0);
  87
  88         if (!opts.obj_dir)
  89                 opts.obj_dir = get_object_directory();
  90         if (opts.shallow)
  91                 flags |= COMMIT_GRAPH_VERIFY_SHALLOW;
  92         if (opts.progress)
  93                 flags |= COMMIT_GRAPH_WRITE_PROGRESS;
  94
  95         odb = find_odb(the_repository, opts.obj_dir);
  96         graph_name = get_commit_graph_filename(odb);
  97         open_ok = open_commit_graph(graph_name, &fd, &st);
  98         if (!open_ok && errno != ENOENT)
  99                 die_errno(_("Could not open commit-graph '%s'"), graph_name);
 100
 101         FREE_AND_NULL(graph_name);
 102
 103         if (open_ok)
 104                 graph = load_commit_graph_one_fd_st(fd, &st, odb);
 105         else
 106                 graph = read_commit_graph_one(the_repository, odb);
 107
 108         /* Return failure if open_ok predicted success */
 109         if (!graph)
 110                 return !!open_ok;
 111
 112         UNLEAK(graph);
 113         return verify_commit_graph(the_repository, graph, flags);
 114 }
 115
 116 extern int read_replace_refs;
 117 static struct split_commit_graph_opts split_opts;
 118
 119 static int write_option_parse_split(const struct option *opt, const char *arg,
 120                                     int unset)
 121 {
 122         enum commit_graph_split_flags *flags = opt->value;
 123
 124         opts.split = 1;
 125         if (!arg)
 126                 return 0;
 127
 128         if (!strcmp(arg, "no-merge"))
 129                 *flags = COMMIT_GRAPH_SPLIT_MERGE_PROHIBITED;
 130         else if (!strcmp(arg, "replace"))
 131                 *flags = COMMIT_GRAPH_SPLIT_REPLACE;
 132         else
 133                 die(_("unrecognized --split argument, %s"), arg);
 134
 135         return 0;
 136 }
 137
 138 static int graph_write(int argc, const char **argv)
 139 {
 140         struct string_list *pack_indexes = NULL;
 141         struct oidset commits = OIDSET_INIT;
 142         struct object_directory *odb = NULL;
 143         struct string_list lines;
 144         int result = 0;
 145         enum commit_graph_write_flags flags = 0;
 146
 147         static struct option builtin_commit_graph_write_options[] = {
 148                 OPT_STRING(0, "object-dir", &opts.obj_dir,
 149                         N_("dir"),
 150                         N_("The object directory to store the graph")),
 151                 OPT_BOOL(0, "reachable", &opts.reachable,
 152                         N_("start walk at all refs")),
 153                 OPT_BOOL(0, "stdin-packs", &opts.stdin_packs,
 154                         N_("scan pack-indexes listed by stdin for commits")),
 155                 OPT_BOOL(0, "stdin-commits", &opts.stdin_commits,
 156                         N_("start walk at commits listed by stdin")),
 157                 OPT_BOOL(0, "append", &opts.append,
 158                         N_("include all commits already in the commit-graph file")),
 159                 OPT_BOOL(0, "progress", &opts.progress, N_("force progress reporting")),
 160                 OPT_CALLBACK_F(0, "split", &split_opts.flags, NULL,
 161                         N_("allow writing an incremental commit-graph file"),
 162                         PARSE_OPT_OPTARG | PARSE_OPT_NONEG,
 163                         write_option_parse_split),
 164                 OPT_BOOL(0, "check-oids", &opts.check_oids,
 165                         N_("require OIDs to be commits")),
 166                 OPT_INTEGER(0, "max-commits", &split_opts.max_commits,
 167                         N_("maximum number of commits in a non-base split commit-graph")),
 168                 OPT_INTEGER(0, "size-multiple", &split_opts.size_multiple,
 169                         N_("maximum ratio between two levels of a split commit-graph")),
 170                 OPT_EXPIRY_DATE(0, "expire-time", &split_opts.expire_time,
 171                         N_("maximum number of commits in a non-base split commit-graph")),
 172                 OPT_END(),
 173         };
 174
 175         opts.progress = isatty(2);
 176         opts.check_oids = 1;
 177         split_opts.size_multiple = 2;
 178         split_opts.max_commits = 0;
 179         split_opts.expire_time = 0;
 180
 181         trace2_cmd_mode("write");
 182
 183         argc = parse_options(argc, argv, NULL,
 184                              builtin_commit_graph_write_options,
 185                              builtin_commit_graph_write_usage, 0);
 186
 187         if (opts.reachable + opts.stdin_packs + opts.stdin_commits > 1)
 188                 die(_("use at most one of --reachable, --stdin-commits, or --stdin-packs"));
 189         if (!opts.obj_dir)
 190                 opts.obj_dir = get_object_directory();
 191         if (opts.append)
 192                 flags |= COMMIT_GRAPH_WRITE_APPEND;
 193         if (opts.split)
 194                 flags |= COMMIT_GRAPH_WRITE_SPLIT;
 195         if (opts.progress)
 196                 flags |= COMMIT_GRAPH_WRITE_PROGRESS;
 197
 198         read_replace_refs = 0;
 199         odb = find_odb(the_repository, opts.obj_dir);
 200
 201         if (opts.reachable) {
 202                 if (write_commit_graph_reachable(odb, flags, &split_opts))
 203                         return 1;
 204                 return 0;
 205         }
 206
 207         string_list_init(&lines, 0);
 208         if (opts.stdin_packs || opts.stdin_commits) {
 209                 struct strbuf buf = STRBUF_INIT;
 210
 211                 while (strbuf_getline(&buf, stdin) != EOF)
 212                         string_list_append(&lines, strbuf_detach(&buf, NULL));
 213
 214                 if (opts.stdin_packs)
 215                         pack_indexes = &lines;
 216                 if (opts.stdin_commits) {
 217                         struct string_list_item *item;
 218                         oidset_init(&commits, lines.nr);
 219                         for_each_string_list_item(item, &lines) {
 220                                 struct object_id oid;
 221                                 const char *end;
 222
 223                                 if (parse_oid_hex(item->string, &oid, &end)) {
 224                                         error(_("unexpected non-hex object ID: "
 225                                                 "%s"), item->string);
 226                                         return 1;
 227                                 }
 228
 229                                 oidset_insert(&commits, &oid);
 230                         }
 231                         if (opts.check_oids)
 232                                 flags |= COMMIT_GRAPH_WRITE_CHECK_OIDS;
 233                 }
 234
 235                 UNLEAK(buf);
 236         }
 237
 238         if (write_commit_graph(odb,
 239                                pack_indexes,
 240                                opts.stdin_commits ? &commits : NULL,
 241                                flags,
 242                                &split_opts))
 243                 result = 1;
 244
 245         UNLEAK(lines);
 246         return result;
 247 }
 248
 249 int cmd_commit_graph(int argc, const char **argv, const char *prefix)
 250 {
 251         static struct option builtin_commit_graph_options[] = {
 252                 OPT_STRING(0, "object-dir", &opts.obj_dir,
 253                         N_("dir"),
 254                         N_("The object directory to store the graph")),
 255                 OPT_END(),
 256         };
 257
 258         if (argc == 2 && !strcmp(argv[1], "-h"))
 259                 usage_with_options(builtin_commit_graph_usage,
 260                                    builtin_commit_graph_options);
 261
 262         git_config(git_default_config, NULL);
 263         argc = parse_options(argc, argv, prefix,
 264                              builtin_commit_graph_options,
 265                              builtin_commit_graph_usage,
 266                              PARSE_OPT_STOP_AT_NON_OPTION);
 267
 268         save_commit_buffer = 0;
 269
 270         if (argc > 0) {
 271                 if (!strcmp(argv[0], "verify"))
 272                         return graph_verify(argc, argv);
 273                 if (!strcmp(argv[0], "write"))
 274                         return graph_write(argc, argv);
 275         }
 276
 277         usage_with_options(builtin_commit_graph_usage,
 278                            builtin_commit_graph_options);
 279 }