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>] [--file=<hash>]"),
  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>] [--file=<hash>]"),
  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         const char *graph_file;
  28 } opts;
  29
  30 static int graph_read(int argc, const char **argv)
  31 {
  32         struct commit_graph *graph = 0;
  33         struct strbuf full_path = STRBUF_INIT;
  34
  35         static struct option builtin_commit_graph_read_options[] = {
  36                 { OPTION_STRING, 'o', "object-dir", &opts.obj_dir,
  37                         N_("dir"),
  38                         N_("The object directory to store the graph") },
  39                 { OPTION_STRING, 'H', "file", &opts.graph_file,
  40                         N_("file"),
  41                         N_("The filename for a specific commit graph file in the object directory."),
  42                         PARSE_OPT_OPTARG, NULL, (intptr_t) "" },
  43                 OPT_END(),
  44         };
  45
  46         argc = parse_options(argc, argv, NULL,
  47                              builtin_commit_graph_read_options,
  48                              builtin_commit_graph_read_usage, 0);
  49
  50         if (!opts.obj_dir)
  51                 opts.obj_dir = get_object_directory();
  52
  53         if (!opts.graph_file)
  54                 die("no graph hash specified");
  55
  56         strbuf_addf(&full_path, "%s/info/%s", opts.obj_dir, opts.graph_file);
  57         graph = load_commit_graph_one(full_path.buf);
  58
  59         if (!graph)
  60                 die("graph file %s does not exist", full_path.buf);
  61
  62         printf("header: %08x %d %d %d %d\n",
  63                 ntohl(*(uint32_t*)graph->data),
  64                 *(unsigned char*)(graph->data + 4),
  65                 *(unsigned char*)(graph->data + 5),
  66                 *(unsigned char*)(graph->data + 6),
  67                 *(unsigned char*)(graph->data + 7));
  68         printf("num_commits: %u\n", graph->num_commits);
  69         printf("chunks:");
  70
  71         if (graph->chunk_oid_fanout)
  72                 printf(" oid_fanout");
  73         if (graph->chunk_oid_lookup)
  74                 printf(" oid_lookup");
  75         if (graph->chunk_commit_data)
  76                 printf(" commit_metadata");
  77         if (graph->chunk_large_edges)
  78                 printf(" large_edges");
  79         printf("\n");
  80
  81         return 0;
  82 }
  83
  84 static int graph_write(int argc, const char **argv)
  85 {
  86         char *graph_name;
  87
  88         static struct option builtin_commit_graph_write_options[] = {
  89                 { OPTION_STRING, 'o', "object-dir", &opts.obj_dir,
  90                         N_("dir"),
  91                         N_("The object directory to store the graph") },
  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         graph_name = write_commit_graph(opts.obj_dir);
 103
 104         if (graph_name) {
 105                 printf("%s\n", graph_name);
 106                 FREE_AND_NULL(graph_name);
 107         }
 108
 109         return 0;
 110 }
 111
 112 int cmd_commit_graph(int argc, const char **argv, const char *prefix)
 113 {
 114         static struct option builtin_commit_graph_options[] = {
 115                 { OPTION_STRING, 'o', "object-dir", &opts.obj_dir,
 116                         N_("dir"),
 117                         N_("The object directory to store the graph") },
 118                 OPT_END(),
 119         };
 120
 121         if (argc == 2 && !strcmp(argv[1], "-h"))
 122                 usage_with_options(builtin_commit_graph_usage,
 123                                    builtin_commit_graph_options);
 124
 125         git_config(git_default_config, NULL);
 126         argc = parse_options(argc, argv, prefix,
 127                              builtin_commit_graph_options,
 128                              builtin_commit_graph_usage,
 129                              PARSE_OPT_STOP_AT_NON_OPTION);
 130
 131         if (argc > 0) {
 132                 if (!strcmp(argv[0], "read"))
 133                         return graph_read(argc, argv);
 134                 if (!strcmp(argv[0], "write"))
 135                         return graph_write(argc, argv);
 136         }
 137
 138         usage_with_options(builtin_commit_graph_usage,
 139                            builtin_commit_graph_options);
 140 }