repo-settings.c

   1 #include "git-compat-util.h"
   2 #include "config.h"
   3 #include "repo-settings.h"
   4 #include "repository.h"
   5 #include "midx.h"
   6 #include "pack-objects.h"
   7
   8 static void repo_cfg_bool(struct repository *r, const char *key, int *dest,
   9                           int def)
  10 {
  11         if (repo_config_get_bool(r, key, dest))
  12                 *dest = def;
  13 }
  14
  15 static void repo_cfg_int(struct repository *r, const char *key, int *dest,
  16                          int def)
  17 {
  18         if (repo_config_get_int(r, key, dest))
  19                 *dest = def;
  20 }
  21
  22 void prepare_repo_settings(struct repository *r)
  23 {
  24         const struct repo_settings defaults = REPO_SETTINGS_INIT;
  25         int experimental;
  26         int value;
  27         const char *strval;
  28         int manyfiles;
  29         int read_changed_paths;
  30         unsigned long ulongval;
  31
  32         if (!r->gitdir)
  33                 BUG("Cannot add settings for uninitialized repository");
  34
  35         if (r->settings.initialized)
  36                 return;
  37
  38         memcpy(&r->settings, &defaults, sizeof(defaults));
  39         r->settings.initialized++;
  40
  41         /* Booleans config or default, cascades to other settings */
  42         repo_cfg_bool(r, "feature.manyfiles", &manyfiles, 0);
  43         repo_cfg_bool(r, "feature.experimental", &experimental, 0);
  44
  45         /* Defaults modified by feature.* */
  46         if (experimental) {
  47                 r->settings.fetch_negotiation_algorithm = FETCH_NEGOTIATION_SKIPPING;
  48                 r->settings.pack_use_bitmap_boundary_traversal = 1;
  49                 r->settings.pack_use_multi_pack_reuse = 1;
  50         }
  51         if (manyfiles) {
  52                 r->settings.index_version = 4;
  53                 r->settings.index_skip_hash = 1;
  54                 r->settings.core_untracked_cache = UNTRACKED_CACHE_WRITE;
  55         }
  56
  57         /* Commit graph config or default, does not cascade (simple) */
  58         repo_cfg_bool(r, "core.commitgraph", &r->settings.core_commit_graph, 1);
  59         repo_cfg_int(r, "commitgraph.generationversion", &r->settings.commit_graph_generation_version, 2);
  60         repo_cfg_bool(r, "commitgraph.readchangedpaths", &read_changed_paths, 1);
  61         repo_cfg_int(r, "commitgraph.changedpathsversion",
  62                      &r->settings.commit_graph_changed_paths_version,
  63                      read_changed_paths ? -1 : 0);
  64         repo_cfg_bool(r, "gc.writecommitgraph", &r->settings.gc_write_commit_graph, 1);
  65         repo_cfg_bool(r, "fetch.writecommitgraph", &r->settings.fetch_write_commit_graph, 0);
  66
  67         /* Boolean config or default, does not cascade (simple)  */
  68         repo_cfg_bool(r, "pack.usesparse", &r->settings.pack_use_sparse, 1);
  69         repo_cfg_bool(r, "core.multipackindex", &r->settings.core_multi_pack_index, 1);
  70         repo_cfg_bool(r, "index.sparse", &r->settings.sparse_index, 0);
  71         repo_cfg_bool(r, "index.skiphash", &r->settings.index_skip_hash, r->settings.index_skip_hash);
  72         repo_cfg_bool(r, "pack.readreverseindex", &r->settings.pack_read_reverse_index, 1);
  73         repo_cfg_bool(r, "pack.usebitmapboundarytraversal",
  74                       &r->settings.pack_use_bitmap_boundary_traversal,
  75                       r->settings.pack_use_bitmap_boundary_traversal);
  76         repo_cfg_bool(r, "core.usereplacerefs", &r->settings.read_replace_refs, 1);
  77
  78         /*
  79          * The GIT_TEST_MULTI_PACK_INDEX variable is special in that
  80          * either it *or* the config sets
  81          * r->settings.core_multi_pack_index if true. We don't take
  82          * the environment variable if it exists (even if false) over
  83          * any config, as in most other cases.
  84          */
  85         if (git_env_bool(GIT_TEST_MULTI_PACK_INDEX, 0))
  86                 r->settings.core_multi_pack_index = 1;
  87
  88         /*
  89          * Non-boolean config
  90          */
  91         if (!repo_config_get_int(r, "index.version", &value))
  92                 r->settings.index_version = value;
  93
  94         if (!repo_config_get_string_tmp(r, "core.untrackedcache", &strval)) {
  95                 int v = git_parse_maybe_bool(strval);
  96
  97                 /*
  98                  * If it's set to "keep", or some other non-boolean
  99                  * value then "v < 0". Then we do nothing and keep it
 100                  * at the default of UNTRACKED_CACHE_KEEP.
 101                  */
 102                 if (v >= 0)
 103                         r->settings.core_untracked_cache = v ?
 104                                 UNTRACKED_CACHE_WRITE : UNTRACKED_CACHE_REMOVE;
 105         }
 106
 107         if (!repo_config_get_string_tmp(r, "fetch.negotiationalgorithm", &strval)) {
 108                 int fetch_default = r->settings.fetch_negotiation_algorithm;
 109                 if (!strcasecmp(strval, "skipping"))
 110                         r->settings.fetch_negotiation_algorithm = FETCH_NEGOTIATION_SKIPPING;
 111                 else if (!strcasecmp(strval, "noop"))
 112                         r->settings.fetch_negotiation_algorithm = FETCH_NEGOTIATION_NOOP;
 113                 else if (!strcasecmp(strval, "consecutive"))
 114                         r->settings.fetch_negotiation_algorithm = FETCH_NEGOTIATION_CONSECUTIVE;
 115                 else if (!strcasecmp(strval, "default"))
 116                         r->settings.fetch_negotiation_algorithm = fetch_default;
 117                 else
 118                         die("unknown fetch negotiation algorithm '%s'", strval);
 119         }
 120
 121         /*
 122          * This setting guards all index reads to require a full index
 123          * over a sparse index. After suitable guards are placed in the
 124          * codebase around uses of the index, this setting will be
 125          * removed.
 126          */
 127         r->settings.command_requires_full_index = 1;
 128
 129         if (!repo_config_get_ulong(r, "core.deltabasecachelimit", &ulongval))
 130                 r->settings.delta_base_cache_limit = ulongval;
 131
 132         if (!repo_config_get_ulong(r, "core.packedgitwindowsize", &ulongval)) {
 133                 int pgsz_x2 = getpagesize() * 2;
 134
 135                 /* This value must be multiple of (pagesize * 2) */
 136                 ulongval /= pgsz_x2;
 137                 if (ulongval < 1)
 138                         ulongval = 1;
 139                 r->settings.packed_git_window_size = ulongval * pgsz_x2;
 140         }
 141
 142         if (!repo_config_get_ulong(r, "core.packedgitlimit", &ulongval))
 143                 r->settings.packed_git_limit = ulongval;
 144 }
 145
 146 enum log_refs_config repo_settings_get_log_all_ref_updates(struct repository *repo)
 147 {
 148         const char *value;
 149
 150         if (!repo_config_get_string_tmp(repo, "core.logallrefupdates", &value)) {
 151                 if (value && !strcasecmp(value, "always"))
 152                         return LOG_REFS_ALWAYS;
 153                 else if (git_config_bool("core.logallrefupdates", value))
 154                         return LOG_REFS_NORMAL;
 155                 else
 156                         return LOG_REFS_NONE;
 157         }
 158
 159         return LOG_REFS_UNSET;
 160 }
 161
 162 int repo_settings_get_warn_ambiguous_refs(struct repository *repo)
 163 {
 164         prepare_repo_settings(repo);
 165         if (repo->settings.warn_ambiguous_refs < 0)
 166                 repo_cfg_bool(repo, "core.warnambiguousrefs",
 167                               &repo->settings.warn_ambiguous_refs, 1);
 168         return repo->settings.warn_ambiguous_refs;
 169 }