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|--split] [--reachable|--stdin-packs|--stdin-commits] [--[no-]progress] <split options>"),
  13         NULL
  14 };
  15
  16 static const char * const builtin_commit_graph_verify_usage[] = {
  17         N_("git commit-graph verify [--object-dir <objdir>] [--shallow] [--[no-]progress]"),
  18         NULL
  19 };
  20
  21 static const char * const builtin_commit_graph_write_usage[] = {
  22         N_("git commit-graph write [--object-dir <objdir>] [--append|--split] [--reachable|--stdin-packs|--stdin-commits] [--[no-]progress] <split options>"),
  23         NULL
  24 };
  25
  26 static struct opts_commit_graph {
  27         const char *obj_dir;
  28         int reachable;
  29         int stdin_packs;
  30         int stdin_commits;
  31         int append;
  32         int split;
  33         int shallow;
  34         int progress;
  35 } opts;
  36
  37 static int graph_verify(int argc, const char **argv)
  38 {
  39         struct commit_graph *graph = NULL;
  40         char *graph_name;
  41         int open_ok;
  42         int fd;
  43         struct stat st;
  44         int flags = 0;
  45
  46         static struct option builtin_commit_graph_verify_options[] = {
  47                 OPT_STRING(0, "object-dir", &opts.obj_dir,
  48                            N_("dir"),
  49                            N_("The object directory to store the graph")),
  50                 OPT_BOOL(0, "shallow", &opts.shallow,
  51                          N_("if the commit-graph is split, only verify the tip file")),
  52                 OPT_BOOL(0, "progress", &opts.progress, N_("force progress reporting")),
  53                 OPT_END(),
  54         };
  55
  56         trace2_cmd_mode("verify");
  57
  58         opts.progress = isatty(2);
  59         argc = parse_options(argc, argv, NULL,
  60                              builtin_commit_graph_verify_options,
  61                              builtin_commit_graph_verify_usage, 0);
  62
  63         if (!opts.obj_dir)
  64                 opts.obj_dir = get_object_directory();
  65         if (opts.shallow)
  66                 flags |= COMMIT_GRAPH_VERIFY_SHALLOW;
  67         if (opts.progress)
  68                 flags |= COMMIT_GRAPH_WRITE_PROGRESS;
  69
  70         graph_name = get_commit_graph_filename(opts.obj_dir);
  71         open_ok = open_commit_graph(graph_name, &fd, &st);
  72         if (!open_ok && errno != ENOENT)
  73                 die_errno(_("Could not open commit-graph '%s'"), graph_name);
  74
  75         FREE_AND_NULL(graph_name);
  76
  77         if (open_ok)
  78                 graph = load_commit_graph_one_fd_st(fd, &st);
  79          else
  80                 graph = read_commit_graph_one(the_repository, opts.obj_dir);
  81
  82         /* Return failure if open_ok predicted success */
  83         if (!graph)
  84                 return !!open_ok;
  85
  86         UNLEAK(graph);
  87         return verify_commit_graph(the_repository, graph, flags);
  88 }
  89
  90 extern int read_replace_refs;
  91 static struct split_commit_graph_opts split_opts;
  92
  93 static int graph_write(int argc, const char **argv)
  94 {
  95         struct string_list *pack_indexes = NULL;
  96         struct string_list *commit_hex = NULL;
  97         struct string_list lines;
  98         int result = 0;
  99         enum commit_graph_write_flags flags = 0;
 100
 101         static struct option builtin_commit_graph_write_options[] = {
 102                 OPT_STRING(0, "object-dir", &opts.obj_dir,
 103                         N_("dir"),
 104                         N_("The object directory to store the graph")),
 105                 OPT_BOOL(0, "reachable", &opts.reachable,
 106                         N_("start walk at all refs")),
 107                 OPT_BOOL(0, "stdin-packs", &opts.stdin_packs,
 108                         N_("scan pack-indexes listed by stdin for commits")),
 109                 OPT_BOOL(0, "stdin-commits", &opts.stdin_commits,
 110                         N_("start walk at commits listed by stdin")),
 111                 OPT_BOOL(0, "append", &opts.append,
 112                         N_("include all commits already in the commit-graph file")),
 113                 OPT_BOOL(0, "progress", &opts.progress, N_("force progress reporting")),
 114                 OPT_BOOL(0, "split", &opts.split,
 115                         N_("allow writing an incremental commit-graph file")),
 116                 OPT_INTEGER(0, "max-commits", &split_opts.max_commits,
 117                         N_("maximum number of commits in a non-base split commit-graph")),
 118                 OPT_INTEGER(0, "size-multiple", &split_opts.size_multiple,
 119                         N_("maximum ratio between two levels of a split commit-graph")),
 120                 OPT_EXPIRY_DATE(0, "expire-time", &split_opts.expire_time,
 121                         N_("maximum number of commits in a non-base split commit-graph")),
 122                 OPT_END(),
 123         };
 124
 125         opts.progress = isatty(2);
 126         split_opts.size_multiple = 2;
 127         split_opts.max_commits = 0;
 128         split_opts.expire_time = 0;
 129
 130         trace2_cmd_mode("write");
 131
 132         argc = parse_options(argc, argv, NULL,
 133                              builtin_commit_graph_write_options,
 134                              builtin_commit_graph_write_usage, 0);
 135
 136         if (opts.reachable + opts.stdin_packs + opts.stdin_commits > 1)
 137                 die(_("use at most one of --reachable, --stdin-commits, or --stdin-packs"));
 138         if (!opts.obj_dir)
 139                 opts.obj_dir = get_object_directory();
 140         if (opts.append)
 141                 flags |= COMMIT_GRAPH_WRITE_APPEND;
 142         if (opts.split)
 143                 flags |= COMMIT_GRAPH_WRITE_SPLIT;
 144         if (opts.progress)
 145                 flags |= COMMIT_GRAPH_WRITE_PROGRESS;
 146
 147         read_replace_refs = 0;
 148
 149         if (opts.reachable) {
 150                 if (write_commit_graph_reachable(opts.obj_dir, flags, &split_opts))
 151                         return 1;
 152                 return 0;
 153         }
 154
 155         string_list_init(&lines, 0);
 156         if (opts.stdin_packs || opts.stdin_commits) {
 157                 struct strbuf buf = STRBUF_INIT;
 158
 159                 while (strbuf_getline(&buf, stdin) != EOF)
 160                         string_list_append(&lines, strbuf_detach(&buf, NULL));
 161
 162                 if (opts.stdin_packs)
 163                         pack_indexes = &lines;
 164                 if (opts.stdin_commits) {
 165                         commit_hex = &lines;
 166                         flags |= COMMIT_GRAPH_WRITE_CHECK_OIDS;
 167                 }
 168
 169                 UNLEAK(buf);
 170         }
 171
 172         if (write_commit_graph(opts.obj_dir,
 173                                pack_indexes,
 174                                commit_hex,
 175                                flags,
 176                                &split_opts))
 177                 result = 1;
 178
 179         UNLEAK(lines);
 180         return result;
 181 }
 182
 183 int cmd_commit_graph(int argc, const char **argv, const char *prefix)
 184 {
 185         static struct option builtin_commit_graph_options[] = {
 186                 OPT_STRING(0, "object-dir", &opts.obj_dir,
 187                         N_("dir"),
 188                         N_("The object directory to store the graph")),
 189                 OPT_END(),
 190         };
 191
 192         if (argc == 2 && !strcmp(argv[1], "-h"))
 193                 usage_with_options(builtin_commit_graph_usage,
 194                                    builtin_commit_graph_options);
 195
 196         git_config(git_default_config, NULL);
 197         argc = parse_options(argc, argv, prefix,
 198                              builtin_commit_graph_options,
 199                              builtin_commit_graph_usage,
 200                              PARSE_OPT_STOP_AT_NON_OPTION);
 201
 202         save_commit_buffer = 0;
 203
 204         if (argc > 0) {
 205                 if (!strcmp(argv[0], "verify"))
 206                         return graph_verify(argc, argv);
 207                 if (!strcmp(argv[0], "write"))
 208                         return graph_write(argc, argv);
 209         }
 210
 211         usage_with_options(builtin_commit_graph_usage,
 212                            builtin_commit_graph_options);
 213 }