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