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 trust_executable_bit = 1;
  15 int quote_path_fully = 1;
  16 int has_symlinks = 1;
  17 int assume_unchanged;
  18 int prefer_symlink_refs;
  19 int is_bare_repository_cfg = -1; /* unspecified */
  20 int log_all_ref_updates = -1; /* unspecified */
  21 int warn_ambiguous_refs = 1;
  22 int repository_format_version;
  23 const char *git_commit_encoding;
  24 const char *git_log_output_encoding;
  25 int shared_repository = PERM_UMASK;
  26 const char *apply_default_whitespace;
  27 int zlib_compression_level = Z_BEST_SPEED;
  28 int core_compression_level;
  29 int core_compression_seen;
  30 size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
  31 size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
  32 size_t delta_base_cache_limit = 16 * 1024 * 1024;
  33 int pager_in_use;
  34 int pager_use_color = 1;
  35 int auto_crlf = 0;      /* 1: both ways, -1: only when adding git objects */
  36
  37 static const char *git_dir;
  38 static char *git_object_dir, *git_index_file, *git_refs_dir, *git_graft_file;
  39
  40 static void setup_git_env(void)
  41 {
  42         git_dir = getenv(GIT_DIR_ENVIRONMENT);
  43         if (!git_dir)
  44                 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
  45         git_object_dir = getenv(DB_ENVIRONMENT);
  46         if (!git_object_dir) {
  47                 git_object_dir = xmalloc(strlen(git_dir) + 9);
  48                 sprintf(git_object_dir, "%s/objects", git_dir);
  49         }
  50         git_refs_dir = xmalloc(strlen(git_dir) + 6);
  51         sprintf(git_refs_dir, "%s/refs", git_dir);
  52         git_index_file = getenv(INDEX_ENVIRONMENT);
  53         if (!git_index_file) {
  54                 git_index_file = xmalloc(strlen(git_dir) + 7);
  55                 sprintf(git_index_file, "%s/index", git_dir);
  56         }
  57         git_graft_file = getenv(GRAFT_ENVIRONMENT);
  58         if (!git_graft_file)
  59                 git_graft_file = xstrdup(git_path("info/grafts"));
  60 }
  61
  62 int is_bare_repository(void)
  63 {
  64         const char *dir, *s;
  65         if (0 <= is_bare_repository_cfg)
  66                 return is_bare_repository_cfg;
  67
  68         dir = get_git_dir();
  69         if (!strcmp(dir, DEFAULT_GIT_DIR_ENVIRONMENT))
  70                 return 0;
  71         s = strrchr(dir, '/');
  72         return !s || strcmp(s + 1, DEFAULT_GIT_DIR_ENVIRONMENT);
  73 }
  74
  75 const char *get_git_dir(void)
  76 {
  77         if (!git_dir)
  78                 setup_git_env();
  79         return git_dir;
  80 }
  81
  82 char *get_object_directory(void)
  83 {
  84         if (!git_object_dir)
  85                 setup_git_env();
  86         return git_object_dir;
  87 }
  88
  89 char *get_refs_directory(void)
  90 {
  91         if (!git_refs_dir)
  92                 setup_git_env();
  93         return git_refs_dir;
  94 }
  95
  96 char *get_index_file(void)
  97 {
  98         if (!git_index_file)
  99                 setup_git_env();
 100         return git_index_file;
 101 }
 102
 103 char *get_graft_file(void)
 104 {
 105         if (!git_graft_file)
 106                 setup_git_env();
 107         return git_graft_file;
 108 }