Andrew's git - gitweb.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
   8static 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
  15static const char * const builtin_commit_graph_read_usage[] = {
  16        N_("git commit-graph read [--object-dir <objdir>]"),
  17        NULL
  18};
  19
  20static const char * const builtin_commit_graph_write_usage[] = {
  21        N_("git commit-graph write [--object-dir <objdir>]"),
  22        NULL
  23};
  24
  25static struct opts_commit_graph {
  26        const char *obj_dir;
  27} opts;
  28
  29static 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
  77static 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
  97int 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}