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 "commit-graph.h"
   7
   8 static char const * const builtin_commit_graph_usage[] = {
   9         N_("git commit-graph [--object-dir <objdir>]"),
  10         N_("git commit-graph read [--object-dir <objdir>]"),
  11         N_("git commit-graph write [--object-dir <objdir>] [--stdin-packs]"),
  12         NULL
  13 };
  14
  15 static const char * const builtin_commit_graph_read_usage[] = {
  16         N_("git commit-graph read [--object-dir <objdir>]"),
  17         NULL
  18 };
  19
  20 static const char * const builtin_commit_graph_write_usage[] = {
  21         N_("git commit-graph write [--object-dir <objdir>] [--stdin-packs]"),
  22         NULL
  23 };
  24
  25 static struct opts_commit_graph {
  26         const char *obj_dir;
  27         int stdin_packs;
  28 } opts;
  29
  30 static int graph_read(int argc, const char **argv)
  31 {
  32         struct commit_graph *graph = NULL;
  33         char *graph_name;
  34
  35         static struct option builtin_commit_graph_read_options[] = {
  36                 OPT_STRING(0, "object-dir", &opts.obj_dir,
  37                         N_("dir"),
  38                         N_("The object directory to store the graph")),
  39                 OPT_END(),
  40         };
  41
  42         argc = parse_options(argc, argv, NULL,
  43                              builtin_commit_graph_read_options,
  44                              builtin_commit_graph_read_usage, 0);
  45
  46         if (!opts.obj_dir)
  47                 opts.obj_dir = get_object_directory();
  48
  49         graph_name = get_commit_graph_filename(opts.obj_dir);
  50         graph = load_commit_graph_one(graph_name);
  51
  52         if (!graph)
  53                 die("graph file %s does not exist", graph_name);
  54         FREE_AND_NULL(graph_name);
  55
  56         printf("header: %08x %d %d %d %d\n",
  57                 ntohl(*(uint32_t*)graph->data),
  58                 *(unsigned char*)(graph->data + 4),
  59                 *(unsigned char*)(graph->data + 5),
  60                 *(unsigned char*)(graph->data + 6),
  61                 *(unsigned char*)(graph->data + 7));
  62         printf("num_commits: %u\n", graph->num_commits);
  63         printf("chunks:");
  64
  65         if (graph->chunk_oid_fanout)
  66                 printf(" oid_fanout");
  67         if (graph->chunk_oid_lookup)
  68                 printf(" oid_lookup");
  69         if (graph->chunk_commit_data)
  70                 printf(" commit_metadata");
  71         if (graph->chunk_large_edges)
  72                 printf(" large_edges");
  73         printf("\n");
  74
  75         return 0;
  76 }
  77
  78 static int graph_write(int argc, const char **argv)
  79 {
  80         const char **pack_indexes = NULL;
  81         int packs_nr = 0;
  82         const char **lines = NULL;
  83         int lines_nr = 0;
  84         int lines_alloc = 0;
  85
  86         static struct option builtin_commit_graph_write_options[] = {
  87                 OPT_STRING(0, "object-dir", &opts.obj_dir,
  88                         N_("dir"),
  89                         N_("The object directory to store the graph")),
  90                 OPT_BOOL(0, "stdin-packs", &opts.stdin_packs,
  91                         N_("scan pack-indexes listed by stdin for commits")),
  92                 OPT_END(),
  93         };
  94
  95         argc = parse_options(argc, argv, NULL,
  96                              builtin_commit_graph_write_options,
  97                              builtin_commit_graph_write_usage, 0);
  98
  99         if (!opts.obj_dir)
 100                 opts.obj_dir = get_object_directory();
 101
 102         if (opts.stdin_packs) {
 103                 struct strbuf buf = STRBUF_INIT;
 104                 lines_nr = 0;
 105                 lines_alloc = 128;
 106                 ALLOC_ARRAY(lines, lines_alloc);
 107
 108                 while (strbuf_getline(&buf, stdin) != EOF) {
 109                         ALLOC_GROW(lines, lines_nr + 1, lines_alloc);
 110                         lines[lines_nr++] = strbuf_detach(&buf, NULL);
 111                 }
 112
 113                 pack_indexes = lines;
 114                 packs_nr = lines_nr;
 115         }
 116
 117         write_commit_graph(opts.obj_dir,
 118                            pack_indexes,
 119                            packs_nr);
 120
 121         return 0;
 122 }
 123
 124 int cmd_commit_graph(int argc, const char **argv, const char *prefix)
 125 {
 126         static struct option builtin_commit_graph_options[] = {
 127                 OPT_STRING(0, "object-dir", &opts.obj_dir,
 128                         N_("dir"),
 129                         N_("The object directory to store the graph")),
 130                 OPT_END(),
 131         };
 132
 133         if (argc == 2 && !strcmp(argv[1], "-h"))
 134                 usage_with_options(builtin_commit_graph_usage,
 135                                    builtin_commit_graph_options);
 136
 137         git_config(git_default_config, NULL);
 138         argc = parse_options(argc, argv, prefix,
 139                              builtin_commit_graph_options,
 140                              builtin_commit_graph_usage,
 141                              PARSE_OPT_STOP_AT_NON_OPTION);
 142
 143         if (argc > 0) {
 144                 if (!strcmp(argv[0], "read"))
 145                         return graph_read(argc, argv);
 146                 if (!strcmp(argv[0], "write"))
 147                         return graph_write(argc, argv);
 148         }
 149
 150         usage_with_options(builtin_commit_graph_usage,
 151                            builtin_commit_graph_options);
 152 }