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 int auto_crlf = 0;      /* 1: both ways, -1: only when adding git objects */
  32
  33 static const char *git_dir;
  34 static char *git_object_dir, *git_index_file, *git_refs_dir, *git_graft_file;
  35
  36 static void setup_git_env(void)
  37 {
  38         git_dir = getenv(GIT_DIR_ENVIRONMENT);
  39         if (!git_dir)
  40                 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
  41         git_object_dir = getenv(DB_ENVIRONMENT);
  42         if (!git_object_dir) {
  43                 git_object_dir = xmalloc(strlen(git_dir) + 9);
  44                 sprintf(git_object_dir, "%s/objects", git_dir);
  45         }
  46         git_refs_dir = xmalloc(strlen(git_dir) + 6);
  47         sprintf(git_refs_dir, "%s/refs", git_dir);
  48         git_index_file = getenv(INDEX_ENVIRONMENT);
  49         if (!git_index_file) {
  50                 git_index_file = xmalloc(strlen(git_dir) + 7);
  51                 sprintf(git_index_file, "%s/index", git_dir);
  52         }
  53         git_graft_file = getenv(GRAFT_ENVIRONMENT);
  54         if (!git_graft_file)
  55                 git_graft_file = xstrdup(git_path("info/grafts"));
  56 }
  57
  58 int is_bare_repository(void)
  59 {
  60         const char *dir, *s;
  61         if (0 <= is_bare_repository_cfg)
  62                 return is_bare_repository_cfg;
  63
  64         dir = get_git_dir();
  65         if (!strcmp(dir, DEFAULT_GIT_DIR_ENVIRONMENT))
  66                 return 0;
  67         s = strrchr(dir, '/');
  68         return !s || strcmp(s + 1, DEFAULT_GIT_DIR_ENVIRONMENT);
  69 }
  70
  71 const char *get_git_dir(void)
  72 {
  73         if (!git_dir)
  74                 setup_git_env();
  75         return git_dir;
  76 }
  77
  78 char *get_object_directory(void)
  79 {
  80         if (!git_object_dir)
  81                 setup_git_env();
  82         return git_object_dir;
  83 }
  84
  85 char *get_refs_directory(void)
  86 {
  87         if (!git_refs_dir)
  88                 setup_git_env();
  89         return git_refs_dir;
  90 }
  91
  92 char *get_index_file(void)
  93 {
  94         if (!git_index_file)
  95                 setup_git_env();
  96         return git_index_file;
  97 }
  98
  99 char *get_graft_file(void)
 100 {
 101         if (!git_graft_file)
 102                 setup_git_env();
 103         return git_graft_file;
 104 }
 105
 106