repo-settings.c

   1 #include "git-compat-util.h"
   2 #include "config.h"
   3 #include "repository.h"
   4 #include "midx.h"
   5
   6 static void repo_cfg_bool(struct repository *r, const char *key, int *dest,
   7                           int def)
   8 {
   9         if (repo_config_get_bool(r, key, dest))
  10                 *dest = def;
  11 }
  12
  13 static void repo_cfg_int(struct repository *r, const char *key, int *dest,
  14                          int def)
  15 {
  16         if (repo_config_get_int(r, key, dest))
  17                 *dest = def;
  18 }
  19
  20 void prepare_repo_settings(struct repository *r)
  21 {
  22         int experimental;
  23         int value;
  24         const char *strval;
  25         int manyfiles;
  26
  27         if (!r->gitdir)
  28                 BUG("Cannot add settings for uninitialized repository");
  29
  30         if (r->settings.initialized++)
  31                 return;
  32
  33         /* Defaults */
  34         r->settings.index_version = -1;
  35         r->settings.core_untracked_cache = UNTRACKED_CACHE_KEEP;
  36         r->settings.fetch_negotiation_algorithm = FETCH_NEGOTIATION_CONSECUTIVE;
  37
  38         /* Booleans config or default, cascades to other settings */
  39         repo_cfg_bool(r, "feature.manyfiles", &manyfiles, 0);
  40         repo_cfg_bool(r, "feature.experimental", &experimental, 0);
  41
  42         /* Defaults modified by feature.* */
  43         if (experimental) {
  44                 r->settings.fetch_negotiation_algorithm = FETCH_NEGOTIATION_SKIPPING;
  45                 r->settings.pack_use_bitmap_boundary_traversal = 1;
  46                 r->settings.pack_use_multi_pack_reuse = 1;
  47         }
  48         if (manyfiles) {
  49                 r->settings.index_version = 4;
  50                 r->settings.index_skip_hash = 1;
  51                 r->settings.core_untracked_cache = UNTRACKED_CACHE_WRITE;
  52         }
  53
  54         /* Commit graph config or default, does not cascade (simple) */
  55         repo_cfg_bool(r, "core.commitgraph", &r->settings.core_commit_graph, 1);
  56         repo_cfg_int(r, "commitgraph.generationversion", &r->settings.commit_graph_generation_version, 2);
  57         repo_cfg_bool(r, "commitgraph.readchangedpaths", &r->settings.commit_graph_read_changed_paths, 1);
  58         repo_cfg_bool(r, "gc.writecommitgraph", &r->settings.gc_write_commit_graph, 1);
  59         repo_cfg_bool(r, "fetch.writecommitgraph", &r->settings.fetch_write_commit_graph, 0);
  60
  61         /* Boolean config or default, does not cascade (simple)  */
  62         repo_cfg_bool(r, "pack.usesparse", &r->settings.pack_use_sparse, 1);
  63         repo_cfg_bool(r, "core.multipackindex", &r->settings.core_multi_pack_index, 1);
  64         repo_cfg_bool(r, "index.sparse", &r->settings.sparse_index, 0);
  65         repo_cfg_bool(r, "index.skiphash", &r->settings.index_skip_hash, r->settings.index_skip_hash);
  66         repo_cfg_bool(r, "pack.readreverseindex", &r->settings.pack_read_reverse_index, 1);
  67         repo_cfg_bool(r, "pack.usebitmapboundarytraversal",
  68                       &r->settings.pack_use_bitmap_boundary_traversal,
  69                       r->settings.pack_use_bitmap_boundary_traversal);
  70         repo_cfg_bool(r, "core.usereplacerefs", &r->settings.read_replace_refs, 1);
  71
  72         /*
  73          * The GIT_TEST_MULTI_PACK_INDEX variable is special in that
  74          * either it *or* the config sets
  75          * r->settings.core_multi_pack_index if true. We don't take
  76          * the environment variable if it exists (even if false) over
  77          * any config, as in most other cases.
  78          */
  79         if (git_env_bool(GIT_TEST_MULTI_PACK_INDEX, 0))
  80                 r->settings.core_multi_pack_index = 1;
  81
  82         /*
  83          * Non-boolean config
  84          */
  85         if (!repo_config_get_int(r, "index.version", &value))
  86                 r->settings.index_version = value;
  87
  88         if (!repo_config_get_string_tmp(r, "core.untrackedcache", &strval)) {
  89                 int v = git_parse_maybe_bool(strval);
  90
  91                 /*
  92                  * If it's set to "keep", or some other non-boolean
  93                  * value then "v < 0". Then we do nothing and keep it
  94                  * at the default of UNTRACKED_CACHE_KEEP.
  95                  */
  96                 if (v >= 0)
  97                         r->settings.core_untracked_cache = v ?
  98                                 UNTRACKED_CACHE_WRITE : UNTRACKED_CACHE_REMOVE;
  99         }
 100
 101         if (!repo_config_get_string_tmp(r, "fetch.negotiationalgorithm", &strval)) {
 102                 int fetch_default = r->settings.fetch_negotiation_algorithm;
 103                 if (!strcasecmp(strval, "skipping"))
 104                         r->settings.fetch_negotiation_algorithm = FETCH_NEGOTIATION_SKIPPING;
 105                 else if (!strcasecmp(strval, "noop"))
 106                         r->settings.fetch_negotiation_algorithm = FETCH_NEGOTIATION_NOOP;
 107                 else if (!strcasecmp(strval, "consecutive"))
 108                         r->settings.fetch_negotiation_algorithm = FETCH_NEGOTIATION_CONSECUTIVE;
 109                 else if (!strcasecmp(strval, "default"))
 110                         r->settings.fetch_negotiation_algorithm = fetch_default;
 111                 else
 112                         die("unknown fetch negotiation algorithm '%s'", strval);
 113         }
 114
 115         /*
 116          * This setting guards all index reads to require a full index
 117          * over a sparse index. After suitable guards are placed in the
 118          * codebase around uses of the index, this setting will be
 119          * removed.
 120          */
 121         r->settings.command_requires_full_index = 1;
 122 }