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>]"),
  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>]"),
  22         NULL
  23 };
  24
  25 static struct opts_commit_graph {
  26         const char *obj_dir;
  27 } opts;
  28
  29 static int graph_read(int argc, const char **argv)
  30 {
  31         struct commit_graph *graph = NULL;
  32         char *graph_name;
  33
  34         static struct option builtin_commit_graph_read_options[] = {
  35                 OPT_STRING(0, "object-dir", &opts.obj_dir,
  36                         N_("dir"),
  37                         N_("The object directory to store the graph")),
  38                 OPT_END(),
  39         };
  40
  41         argc = parse_options(argc, argv, NULL,
  42                              builtin_commit_graph_read_options,
  43                              builtin_commit_graph_read_usage, 0);
  44
  45         if (!opts.obj_dir)
  46                 opts.obj_dir = get_object_directory();
  47
  48         graph_name = get_commit_graph_filename(opts.obj_dir);
  49         graph = load_commit_graph_one(graph_name);
  50
  51         if (!graph)
  52                 die("graph file %s does not exist", graph_name);
  53         FREE_AND_NULL(graph_name);
  54
  55         printf("header: %08x %d %d %d %d\n",
  56                 ntohl(*(uint32_t*)graph->data),
  57                 *(unsigned char*)(graph->data + 4),
  58                 *(unsigned char*)(graph->data + 5),
  59                 *(unsigned char*)(graph->data + 6),
  60                 *(unsigned char*)(graph->data + 7));
  61         printf("num_commits: %u\n", graph->num_commits);
  62         printf("chunks:");
  63
  64         if (graph->chunk_oid_fanout)
  65                 printf(" oid_fanout");
  66         if (graph->chunk_oid_lookup)
  67                 printf(" oid_lookup");
  68         if (graph->chunk_commit_data)
  69                 printf(" commit_metadata");
  70         if (graph->chunk_large_edges)
  71                 printf(" large_edges");
  72         printf("\n");
  73
  74         return 0;
  75 }
  76
  77 static int graph_write(int argc, const char **argv)
  78 {
  79         static struct option builtin_commit_graph_write_options[] = {
  80                 OPT_STRING(0, "object-dir", &opts.obj_dir,
  81                         N_("dir"),
  82                         N_("The object directory to store the graph")),
  83                 OPT_END(),
  84         };
  85
  86         argc = parse_options(argc, argv, NULL,
  87                              builtin_commit_graph_write_options,
  88                              builtin_commit_graph_write_usage, 0);
  89
  90         if (!opts.obj_dir)
  91                 opts.obj_dir = get_object_directory();
  92
  93         write_commit_graph(opts.obj_dir);
  94         return 0;
  95 }
  96
  97 int cmd_commit_graph(int argc, const char **argv, const char *prefix)
  98 {
  99         static struct option builtin_commit_graph_options[] = {
 100                 OPT_STRING(0, "object-dir", &opts.obj_dir,
 101                         N_("dir"),
 102                         N_("The object directory to store the graph")),
 103                 OPT_END(),
 104         };
 105
 106         if (argc == 2 && !strcmp(argv[1], "-h"))
 107                 usage_with_options(builtin_commit_graph_usage,
 108                                    builtin_commit_graph_options);
 109
 110         git_config(git_default_config, NULL);
 111         argc = parse_options(argc, argv, prefix,
 112                              builtin_commit_graph_options,
 113                              builtin_commit_graph_usage,
 114                              PARSE_OPT_STOP_AT_NON_OPTION);
 115
 116         if (argc > 0) {
 117                 if (!strcmp(argv[0], "read"))
 118                         return graph_read(argc, argv);
 119                 if (!strcmp(argv[0], "write"))
 120                         return graph_write(argc, argv);
 121         }
 122
 123         usage_with_options(builtin_commit_graph_usage,
 124                            builtin_commit_graph_options);
 125 }