Andrew's git - gitweb.git/blob

8196fdbe9cfac2573ffcbf1435e4fdb6933c64b5
   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
   9static char const * const builtin_commit_graph_usage[] = {
  10        N_("git commit-graph [--object-dir <objdir>]"),
  11        N_("git commit-graph read [--object-dir <objdir>]"),
  12        N_("git commit-graph verify [--object-dir <objdir>]"),
  13        N_("git commit-graph write [--object-dir <objdir>] [--append] [--reachable|--stdin-packs|--stdin-commits]"),
  14        NULL
  15};
  16
  17static const char * const builtin_commit_graph_verify_usage[] = {
  18        N_("git commit-graph verify [--object-dir <objdir>]"),
  19        NULL
  20};
  21
  22static const char * const builtin_commit_graph_read_usage[] = {
  23        N_("git commit-graph read [--object-dir <objdir>]"),
  24        NULL
  25};
  26
  27static const char * const builtin_commit_graph_write_usage[] = {
  28        N_("git commit-graph write [--object-dir <objdir>] [--append] [--reachable|--stdin-packs|--stdin-commits]"),
  29        NULL
  30};
  31
  32static struct opts_commit_graph {
  33        const char *obj_dir;
  34        int reachable;
  35        int stdin_packs;
  36        int stdin_commits;
  37        int append;
  38} opts;
  39
  40
  41static int graph_verify(int argc, const char **argv)
  42{
  43        struct commit_graph *graph = NULL;
  44        char *graph_name;
  45        int open_ok;
  46        int fd;
  47        struct stat st;
  48
  49        static struct option builtin_commit_graph_verify_options[] = {
  50                OPT_STRING(0, "object-dir", &opts.obj_dir,
  51                           N_("dir"),
  52                           N_("The object directory to store the graph")),
  53                OPT_END(),
  54        };
  55
  56        argc = parse_options(argc, argv, NULL,
  57                             builtin_commit_graph_verify_options,
  58                             builtin_commit_graph_verify_usage, 0);
  59
  60        if (!opts.obj_dir)
  61                opts.obj_dir = get_object_directory();
  62
  63        graph_name = get_commit_graph_filename(opts.obj_dir);
  64        open_ok = open_commit_graph(graph_name, &fd, &st);
  65        if (!open_ok)
  66                return 0;
  67        graph = load_commit_graph_one_fd_st(fd, &st);
  68        FREE_AND_NULL(graph_name);
  69
  70        if (!graph)
  71                return 1;
  72
  73        UNLEAK(graph);
  74        return verify_commit_graph(the_repository, graph);
  75}
  76
  77static int graph_read(int argc, const char **argv)
  78{
  79        struct commit_graph *graph = NULL;
  80        char *graph_name;
  81        int open_ok;
  82        int fd;
  83        struct stat st;
  84
  85        static struct option builtin_commit_graph_read_options[] = {
  86                OPT_STRING(0, "object-dir", &opts.obj_dir,
  87                        N_("dir"),
  88                        N_("The object directory to store the graph")),
  89                OPT_END(),
  90        };
  91
  92        argc = parse_options(argc, argv, NULL,
  93                             builtin_commit_graph_read_options,
  94                             builtin_commit_graph_read_usage, 0);
  95
  96        if (!opts.obj_dir)
  97                opts.obj_dir = get_object_directory();
  98
  99        graph_name = get_commit_graph_filename(opts.obj_dir);
 100
 101        open_ok = open_commit_graph(graph_name, &fd, &st);
 102        if (!open_ok)
 103                die_errno(_("Could not open commit-graph '%s'"), graph_name);
 104
 105        graph = load_commit_graph_one_fd_st(fd, &st);
 106        if (!graph)
 107                return 1;
 108
 109        FREE_AND_NULL(graph_name);
 110
 111        printf("header: %08x %d %d %d %d\n",
 112                ntohl(*(uint32_t*)graph->data),
 113                *(unsigned char*)(graph->data + 4),
 114                *(unsigned char*)(graph->data + 5),
 115                *(unsigned char*)(graph->data + 6),
 116                *(unsigned char*)(graph->data + 7));
 117        printf("num_commits: %u\n", graph->num_commits);
 118        printf("chunks:");
 119
 120        if (graph->chunk_oid_fanout)
 121                printf(" oid_fanout");
 122        if (graph->chunk_oid_lookup)
 123                printf(" oid_lookup");
 124        if (graph->chunk_commit_data)
 125                printf(" commit_metadata");
 126        if (graph->chunk_extra_edges)
 127                printf(" extra_edges");
 128        printf("\n");
 129
 130        UNLEAK(graph);
 131
 132        return 0;
 133}
 134
 135extern int read_replace_refs;
 136
 137static int graph_write(int argc, const char **argv)
 138{
 139        struct string_list *pack_indexes = NULL;
 140        struct string_list *commit_hex = NULL;
 141        struct string_list lines;
 142
 143        static struct option builtin_commit_graph_write_options[] = {
 144                OPT_STRING(0, "object-dir", &opts.obj_dir,
 145                        N_("dir"),
 146                        N_("The object directory to store the graph")),
 147                OPT_BOOL(0, "reachable", &opts.reachable,
 148                        N_("start walk at all refs")),
 149                OPT_BOOL(0, "stdin-packs", &opts.stdin_packs,
 150                        N_("scan pack-indexes listed by stdin for commits")),
 151                OPT_BOOL(0, "stdin-commits", &opts.stdin_commits,
 152                        N_("start walk at commits listed by stdin")),
 153                OPT_BOOL(0, "append", &opts.append,
 154                        N_("include all commits already in the commit-graph file")),
 155                OPT_END(),
 156        };
 157
 158        argc = parse_options(argc, argv, NULL,
 159                             builtin_commit_graph_write_options,
 160                             builtin_commit_graph_write_usage, 0);
 161
 162        if (opts.reachable + opts.stdin_packs + opts.stdin_commits > 1)
 163                die(_("use at most one of --reachable, --stdin-commits, or --stdin-packs"));
 164        if (!opts.obj_dir)
 165                opts.obj_dir = get_object_directory();
 166
 167        read_replace_refs = 0;
 168
 169        if (opts.reachable) {
 170                write_commit_graph_reachable(opts.obj_dir, opts.append, 1);
 171                return 0;
 172        }
 173
 174        string_list_init(&lines, 0);
 175        if (opts.stdin_packs || opts.stdin_commits) {
 176                struct strbuf buf = STRBUF_INIT;
 177
 178                while (strbuf_getline(&buf, stdin) != EOF)
 179                        string_list_append(&lines, strbuf_detach(&buf, NULL));
 180
 181                if (opts.stdin_packs)
 182                        pack_indexes = &lines;
 183                if (opts.stdin_commits)
 184                        commit_hex = &lines;
 185
 186                UNLEAK(buf);
 187        }
 188
 189        write_commit_graph(opts.obj_dir,
 190                           pack_indexes,
 191                           commit_hex,
 192                           opts.append,
 193                           1);
 194
 195        UNLEAK(lines);
 196        return 0;
 197}
 198
 199int cmd_commit_graph(int argc, const char **argv, const char *prefix)
 200{
 201        static struct option builtin_commit_graph_options[] = {
 202                OPT_STRING(0, "object-dir", &opts.obj_dir,
 203                        N_("dir"),
 204                        N_("The object directory to store the graph")),
 205                OPT_END(),
 206        };
 207
 208        if (argc == 2 && !strcmp(argv[1], "-h"))
 209                usage_with_options(builtin_commit_graph_usage,
 210                                   builtin_commit_graph_options);
 211
 212        git_config(git_default_config, NULL);
 213        argc = parse_options(argc, argv, prefix,
 214                             builtin_commit_graph_options,
 215                             builtin_commit_graph_usage,
 216                             PARSE_OPT_STOP_AT_NON_OPTION);
 217
 218        if (argc > 0) {
 219                if (!strcmp(argv[0], "read"))
 220                        return graph_read(argc, argv);
 221                if (!strcmp(argv[0], "verify"))
 222                        return graph_verify(argc, argv);
 223                if (!strcmp(argv[0], "write"))
 224                        return graph_write(argc, argv);
 225        }
 226
 227        usage_with_options(builtin_commit_graph_usage,
 228                           builtin_commit_graph_options);
 229}