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 char *pager_program;
  34 int pager_in_use;
  35 int pager_use_color = 1;
  36 char *editor_program;
  37 int auto_crlf = 0;      /* 1: both ways, -1: only when adding git objects */
  38
  39 static const char *git_dir;
  40 static char *git_object_dir, *git_index_file, *git_refs_dir, *git_graft_file;
  41
  42 static void setup_git_env(void)
  43 {
  44         git_dir = getenv(GIT_DIR_ENVIRONMENT);
  45         if (!git_dir)
  46                 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
  47         git_object_dir = getenv(DB_ENVIRONMENT);
  48         if (!git_object_dir) {
  49                 git_object_dir = xmalloc(strlen(git_dir) + 9);
  50                 sprintf(git_object_dir, "%s/objects", git_dir);
  51         }
  52         git_refs_dir = xmalloc(strlen(git_dir) + 6);
  53         sprintf(git_refs_dir, "%s/refs", git_dir);
  54         git_index_file = getenv(INDEX_ENVIRONMENT);
  55         if (!git_index_file) {
  56                 git_index_file = xmalloc(strlen(git_dir) + 7);
  57                 sprintf(git_index_file, "%s/index", git_dir);
  58         }
  59         git_graft_file = getenv(GRAFT_ENVIRONMENT);
  60         if (!git_graft_file)
  61                 git_graft_file = xstrdup(git_path("info/grafts"));
  62 }
  63
  64 int is_bare_repository(void)
  65 {
  66         const char *dir, *s;
  67         if (0 <= is_bare_repository_cfg)
  68                 return is_bare_repository_cfg;
  69
  70         dir = get_git_dir();
  71         if (!strcmp(dir, DEFAULT_GIT_DIR_ENVIRONMENT))
  72                 return 0;
  73         s = strrchr(dir, '/');
  74         return !s || strcmp(s + 1, DEFAULT_GIT_DIR_ENVIRONMENT);
  75 }
  76
  77 const char *get_git_dir(void)
  78 {
  79         if (!git_dir)
  80                 setup_git_env();
  81         return git_dir;
  82 }
  83
  84 char *get_object_directory(void)
  85 {
  86         if (!git_object_dir)
  87                 setup_git_env();
  88         return git_object_dir;
  89 }
  90
  91 char *get_refs_directory(void)
  92 {
  93         if (!git_refs_dir)
  94                 setup_git_env();
  95         return git_refs_dir;
  96 }
  97
  98 char *get_index_file(void)
  99 {
 100         if (!git_index_file)
 101                 setup_git_env();
 102         return git_index_file;
 103 }
 104
 105 char *get_graft_file(void)
 106 {
 107         if (!git_graft_file)
 108                 setup_git_env();
 109         return git_graft_file;
 110 }