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