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 log_all_ref_updates;
  19 int warn_ambiguous_refs = 1;
  20 int repository_format_version;
  21 char git_commit_encoding[MAX_ENCODING_LENGTH] = "utf-8";
  22 int shared_repository = PERM_UMASK;
  23 const char *apply_default_whitespace;
  24 int zlib_compression_level = Z_DEFAULT_COMPRESSION;
  25 int pager_in_use;
  26 int pager_use_color = 1;
  27
  28 static const char *git_dir;
  29 static char *git_object_dir, *git_index_file, *git_refs_dir, *git_graft_file;
  30
  31 static void setup_git_env(void)
  32 {
  33         git_dir = getenv(GIT_DIR_ENVIRONMENT);
  34         if (!git_dir)
  35                 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
  36         git_object_dir = getenv(DB_ENVIRONMENT);
  37         if (!git_object_dir) {
  38                 git_object_dir = xmalloc(strlen(git_dir) + 9);
  39                 sprintf(git_object_dir, "%s/objects", git_dir);
  40         }
  41         git_refs_dir = xmalloc(strlen(git_dir) + 6);
  42         sprintf(git_refs_dir, "%s/refs", git_dir);
  43         git_index_file = getenv(INDEX_ENVIRONMENT);
  44         if (!git_index_file) {
  45                 git_index_file = xmalloc(strlen(git_dir) + 7);
  46                 sprintf(git_index_file, "%s/index", git_dir);
  47         }
  48         git_graft_file = getenv(GRAFT_ENVIRONMENT);
  49         if (!git_graft_file)
  50                 git_graft_file = xstrdup(git_path("info/grafts"));
  51         log_all_ref_updates = !is_bare_git_dir(git_dir);
  52 }
  53
  54 int is_bare_git_dir (const char *dir)
  55 {
  56         const char *s;
  57         if (!strcmp(dir, DEFAULT_GIT_DIR_ENVIRONMENT))
  58                 return 0;
  59         s = strrchr(dir, '/');
  60         return !s || strcmp(s + 1, DEFAULT_GIT_DIR_ENVIRONMENT);
  61 }
  62
  63 const char *get_git_dir(void)
  64 {
  65         if (!git_dir)
  66                 setup_git_env();
  67         return git_dir;
  68 }
  69
  70 char *get_object_directory(void)
  71 {
  72         if (!git_object_dir)
  73                 setup_git_env();
  74         return git_object_dir;
  75 }
  76
  77 char *get_refs_directory(void)
  78 {
  79         if (!git_refs_dir)
  80                 setup_git_env();
  81         return git_refs_dir;
  82 }
  83
  84 char *get_index_file(void)
  85 {
  86         if (!git_index_file)
  87                 setup_git_env();
  88         return git_index_file;
  89 }
  90
  91 char *get_graft_file(void)
  92 {
  93         if (!git_graft_file)
  94                 setup_git_env();
  95         return git_graft_file;
  96 }
  97
  98