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;
  22 char *git_log_output_encoding;
  23 int shared_repository = PERM_UMASK;
  24 const char *apply_default_whitespace;
  25 int zlib_compression_level = Z_DEFAULT_COMPRESSION;
  26 int pager_in_use;
  27 int pager_use_color = 1;
  28
  29 static const char *git_dir;
  30 static char *git_object_dir, *git_index_file, *git_refs_dir, *git_graft_file;
  31
  32 static void setup_git_env(void)
  33 {
  34         git_dir = getenv(GIT_DIR_ENVIRONMENT);
  35         if (!git_dir)
  36                 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
  37         git_object_dir = getenv(DB_ENVIRONMENT);
  38         if (!git_object_dir) {
  39                 git_object_dir = xmalloc(strlen(git_dir) + 9);
  40                 sprintf(git_object_dir, "%s/objects", git_dir);
  41         }
  42         git_refs_dir = xmalloc(strlen(git_dir) + 6);
  43         sprintf(git_refs_dir, "%s/refs", git_dir);
  44         git_index_file = getenv(INDEX_ENVIRONMENT);
  45         if (!git_index_file) {
  46                 git_index_file = xmalloc(strlen(git_dir) + 7);
  47                 sprintf(git_index_file, "%s/index", git_dir);
  48         }
  49         git_graft_file = getenv(GRAFT_ENVIRONMENT);
  50         if (!git_graft_file)
  51                 git_graft_file = xstrdup(git_path("info/grafts"));
  52         log_all_ref_updates = !is_bare_git_dir(git_dir);
  53 }
  54
  55 int is_bare_git_dir (const char *dir)
  56 {
  57         const char *s;
  58         if (!strcmp(dir, DEFAULT_GIT_DIR_ENVIRONMENT))
  59                 return 0;
  60         s = strrchr(dir, '/');
  61         return !s || strcmp(s + 1, DEFAULT_GIT_DIR_ENVIRONMENT);
  62 }
  63
  64 const char *get_git_dir(void)
  65 {
  66         if (!git_dir)
  67                 setup_git_env();
  68         return git_dir;
  69 }
  70
  71 char *get_object_directory(void)
  72 {
  73         if (!git_object_dir)
  74                 setup_git_env();
  75         return git_object_dir;
  76 }
  77
  78 char *get_refs_directory(void)
  79 {
  80         if (!git_refs_dir)
  81                 setup_git_env();
  82         return git_refs_dir;
  83 }
  84
  85 char *get_index_file(void)
  86 {
  87         if (!git_index_file)
  88                 setup_git_env();
  89         return git_index_file;
  90 }
  91
  92 char *get_graft_file(void)
  93 {
  94         if (!git_graft_file)
  95                 setup_git_env();
  96         return git_graft_file;
  97 }
  98
  99