environment.c

   1 /*
   2  * We put all the git config variables in this same object
   3  * file, so that programs can link against the config parser
   4  * without having to link against all the rest of git.
   5  *
   6  * In particular, no need to bring in libz etc unless needed,
   7  * even if you might want to know where the git directory etc
   8  * are.
   9  */
  10 #include "cache.h"
  11
  12 char git_default_email[MAX_GITNAME];
  13 char git_default_name[MAX_GITNAME];
  14 int use_legacy_headers = 1;
  15 int trust_executable_bit = 1;
  16 int assume_unchanged;
  17 int prefer_symlink_refs;
  18 int is_bare_repository_cfg = -1; /* unspecified */
  19 int log_all_ref_updates = -1; /* unspecified */
  20 int warn_ambiguous_refs = 1;
  21 int repository_format_version;
  22 char *git_commit_encoding;
  23 char *git_log_output_encoding;
  24 int shared_repository = PERM_UMASK;
  25 const char *apply_default_whitespace;
  26 int zlib_compression_level = Z_DEFAULT_COMPRESSION;
  27 size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
  28 size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
  29 int pager_in_use;
  30 int pager_use_color = 1;
  31
  32 static const char *git_dir;
  33 static char *git_object_dir, *git_index_file, *git_refs_dir, *git_graft_file;
  34
  35 static void setup_git_env(void)
  36 {
  37         git_dir = getenv(GIT_DIR_ENVIRONMENT);
  38         if (!git_dir)
  39                 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
  40         git_object_dir = getenv(DB_ENVIRONMENT);
  41         if (!git_object_dir) {
  42                 git_object_dir = xmalloc(strlen(git_dir) + 9);
  43                 sprintf(git_object_dir, "%s/objects", git_dir);
  44         }
  45         git_refs_dir = xmalloc(strlen(git_dir) + 6);
  46         sprintf(git_refs_dir, "%s/refs", git_dir);
  47         git_index_file = getenv(INDEX_ENVIRONMENT);
  48         if (!git_index_file) {
  49                 git_index_file = xmalloc(strlen(git_dir) + 7);
  50                 sprintf(git_index_file, "%s/index", git_dir);
  51         }
  52         git_graft_file = getenv(GRAFT_ENVIRONMENT);
  53         if (!git_graft_file)
  54                 git_graft_file = xstrdup(git_path("info/grafts"));
  55 }
  56
  57 int is_bare_repository(void)
  58 {
  59         const char *dir, *s;
  60         if (0 <= is_bare_repository_cfg)
  61                 return is_bare_repository_cfg;
  62
  63         dir = get_git_dir();
  64         if (!strcmp(dir, DEFAULT_GIT_DIR_ENVIRONMENT))
  65                 return 0;
  66         s = strrchr(dir, '/');
  67         return !s || strcmp(s + 1, DEFAULT_GIT_DIR_ENVIRONMENT);
  68 }
  69
  70 const char *get_git_dir(void)
  71 {
  72         if (!git_dir)
  73                 setup_git_env();
  74         return git_dir;
  75 }
  76
  77 char *get_object_directory(void)
  78 {
  79         if (!git_object_dir)
  80                 setup_git_env();
  81         return git_object_dir;
  82 }
  83
  84 char *get_refs_directory(void)
  85 {
  86         if (!git_refs_dir)
  87                 setup_git_env();
  88         return git_refs_dir;
  89 }
  90
  91 char *get_index_file(void)
  92 {
  93         if (!git_index_file)
  94                 setup_git_env();
  95         return git_index_file;
  96 }
  97
  98 char *get_graft_file(void)
  99 {
 100         if (!git_graft_file)
 101                 setup_git_env();
 102         return git_graft_file;
 103 }
 104
 105