Andrew's git - gitweb.git/blob

5c7019900307f034d8c26b491fa416a7cfd35d8c
   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>] [--stdin-packs]"),
  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>] [--stdin-packs]"),
  22        NULL
  23};
  24
  25static struct opts_commit_graph {
  26        const char *obj_dir;
  27        int stdin_packs;
  28} opts;
  29
  30static 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
  78static 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
 124int 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}