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 = 0;
  17 int prefer_symlink_refs = 0;
  18 int log_all_ref_updates = 0;
  19 int warn_ambiguous_refs = 1;
  20 int repository_format_version = 0;
  21 char git_commit_encoding[MAX_ENCODING_LENGTH] = "utf-8";
  22 int shared_repository = PERM_UMASK;
  23 const char *apply_default_whitespace = NULL;
  24 int zlib_compression_level = Z_DEFAULT_COMPRESSION;
  25 int pager_in_use;
  26 int pager_use_color = 1;
  27
  28 static int dyn_git_object_dir, dyn_git_index_file, dyn_git_graft_file;
  29 static char *git_dir, *git_object_dir, *git_index_file, *git_refs_dir,
  30         *git_graft_file;
  31
  32 void setup_git(char *new_git_dir, char *new_git_object_dir,
  33                char *new_git_index_file, char *new_git_graft_file)
  34 {
  35         git_dir = new_git_dir;
  36         if (!git_dir)
  37                 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
  38
  39         if (dyn_git_object_dir)
  40                 free(git_object_dir);
  41         git_object_dir = new_git_object_dir;
  42         if (!git_object_dir) {
  43                 git_object_dir = xmalloc(strlen(git_dir) + 9);
  44                 sprintf(git_object_dir, "%s/objects", git_dir);
  45                 dyn_git_object_dir = 1;
  46         } else {
  47                 dyn_git_object_dir = 0;
  48         }
  49
  50         if (git_refs_dir)
  51                 free(git_refs_dir);
  52         git_refs_dir = xmalloc(strlen(git_dir) + 6);
  53         sprintf(git_refs_dir, "%s/refs", git_dir);
  54
  55         if (dyn_git_index_file)
  56                 free(git_index_file);
  57         git_index_file = new_git_index_file;
  58         if (!git_index_file) {
  59                 git_index_file = xmalloc(strlen(git_dir) + 7);
  60                 sprintf(git_index_file, "%s/index", git_dir);
  61                 dyn_git_index_file = 1;
  62         } else {
  63                 dyn_git_index_file = 0;
  64         }
  65
  66         if (dyn_git_graft_file)
  67                 free(git_graft_file);
  68         git_graft_file = new_git_graft_file;
  69         if (!git_graft_file) {
  70                 git_graft_file = strdup(git_path("info/grafts"));
  71                 dyn_git_graft_file = 1;
  72         } else {
  73                 dyn_git_graft_file = 0;
  74         }
  75 }
  76
  77 static void setup_git_env(void)
  78 {
  79         setup_git(getenv(GIT_DIR_ENVIRONMENT),
  80                   getenv(DB_ENVIRONMENT),
  81                   getenv(INDEX_ENVIRONMENT),
  82                   getenv(GRAFT_ENVIRONMENT));
  83 }
  84
  85 char *get_git_dir(void)
  86 {
  87         if (!git_dir)
  88                 setup_git_env();
  89         return git_dir;
  90 }
  91
  92 char *get_object_directory(void)
  93 {
  94         if (!git_object_dir)
  95                 setup_git_env();
  96         return git_object_dir;
  97 }
  98
  99 char *get_refs_directory(void)
 100 {
 101         if (!git_refs_dir)
 102                 setup_git_env();
 103         return git_refs_dir;
 104 }
 105
 106 char *get_index_file(void)
 107 {
 108         if (!git_index_file)
 109                 setup_git_env();
 110         return git_index_file;
 111 }
 112
 113 char *get_graft_file(void)
 114 {
 115         if (!git_graft_file)
 116                 setup_git_env();
 117         return git_graft_file;
 118 }
 119
 120