environment.con commit Merge branch 'xx/trivial' into maint (af24059)
   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
  12char git_default_email[MAX_GITNAME];
  13char git_default_name[MAX_GITNAME];
  14int user_ident_explicitly_given;
  15int trust_executable_bit = 1;
  16int trust_ctime = 1;
  17int has_symlinks = 1;
  18int ignore_case;
  19int assume_unchanged;
  20int prefer_symlink_refs;
  21int is_bare_repository_cfg = -1; /* unspecified */
  22int log_all_ref_updates = -1; /* unspecified */
  23int warn_ambiguous_refs = 1;
  24int repository_format_version;
  25const char *git_commit_encoding;
  26const char *git_log_output_encoding;
  27int shared_repository = PERM_UMASK;
  28const char *apply_default_whitespace;
  29const char *apply_default_ignorewhitespace;
  30int zlib_compression_level = Z_BEST_SPEED;
  31int core_compression_level;
  32int core_compression_seen;
  33int fsync_object_files;
  34size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
  35size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
  36size_t delta_base_cache_limit = 16 * 1024 * 1024;
  37const char *pager_program;
  38int pager_use_color = 1;
  39const char *editor_program;
  40const char *excludes_file;
  41enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
  42int read_replace_refs = 1;
  43enum eol eol = EOL_UNSET;
  44enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
  45unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
  46enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
  47enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
  48enum push_default_type push_default = PUSH_DEFAULT_MATCHING;
  49#ifndef OBJECT_CREATION_MODE
  50#define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
  51#endif
  52enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
  53char *notes_ref_name;
  54int grafts_replace_parents = 1;
  55int core_apply_sparse_checkout;
  56
  57/* Parallel index stat data preload? */
  58int core_preload_index = 0;
  59
  60/* This is set by setup_git_dir_gently() and/or git_default_config() */
  61char *git_work_tree_cfg;
  62static char *work_tree;
  63
  64static const char *git_dir;
  65static char *git_object_dir, *git_index_file, *git_refs_dir, *git_graft_file;
  66
  67/*
  68 * Repository-local GIT_* environment variables
  69 * Remember to update local_repo_env_size in cache.h when
  70 * the size of the list changes
  71 */
  72const char * const local_repo_env[LOCAL_REPO_ENV_SIZE + 1] = {
  73        ALTERNATE_DB_ENVIRONMENT,
  74        CONFIG_ENVIRONMENT,
  75        DB_ENVIRONMENT,
  76        GIT_DIR_ENVIRONMENT,
  77        GIT_WORK_TREE_ENVIRONMENT,
  78        GRAFT_ENVIRONMENT,
  79        INDEX_ENVIRONMENT,
  80        NO_REPLACE_OBJECTS_ENVIRONMENT,
  81        NULL
  82};
  83
  84static void setup_git_env(void)
  85{
  86        git_dir = getenv(GIT_DIR_ENVIRONMENT);
  87        if (!git_dir)
  88                git_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
  89        if (!git_dir)
  90                git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
  91        git_object_dir = getenv(DB_ENVIRONMENT);
  92        if (!git_object_dir) {
  93                git_object_dir = xmalloc(strlen(git_dir) + 9);
  94                sprintf(git_object_dir, "%s/objects", git_dir);
  95        }
  96        git_refs_dir = xmalloc(strlen(git_dir) + 6);
  97        sprintf(git_refs_dir, "%s/refs", git_dir);
  98        git_index_file = getenv(INDEX_ENVIRONMENT);
  99        if (!git_index_file) {
 100                git_index_file = xmalloc(strlen(git_dir) + 7);
 101                sprintf(git_index_file, "%s/index", git_dir);
 102        }
 103        git_graft_file = getenv(GRAFT_ENVIRONMENT);
 104        if (!git_graft_file)
 105                git_graft_file = git_pathdup("info/grafts");
 106        if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
 107                read_replace_refs = 0;
 108}
 109
 110int is_bare_repository(void)
 111{
 112        /* if core.bare is not 'false', let's see if there is a work tree */
 113        return is_bare_repository_cfg && !get_git_work_tree();
 114}
 115
 116int have_git_dir(void)
 117{
 118        return !!git_dir;
 119}
 120
 121const char *get_git_dir(void)
 122{
 123        if (!git_dir)
 124                setup_git_env();
 125        return git_dir;
 126}
 127
 128static int git_work_tree_initialized;
 129
 130/*
 131 * Note.  This works only before you used a work tree.  This was added
 132 * primarily to support git-clone to work in a new repository it just
 133 * created, and is not meant to flip between different work trees.
 134 */
 135void set_git_work_tree(const char *new_work_tree)
 136{
 137        if (is_bare_repository_cfg >= 0)
 138                die("cannot set work tree after initialization");
 139        git_work_tree_initialized = 1;
 140        free(work_tree);
 141        work_tree = xstrdup(make_absolute_path(new_work_tree));
 142        is_bare_repository_cfg = 0;
 143}
 144
 145const char *get_git_work_tree(void)
 146{
 147        if (!git_work_tree_initialized) {
 148                work_tree = getenv(GIT_WORK_TREE_ENVIRONMENT);
 149                /* core.bare = true overrides implicit and config work tree */
 150                if (!work_tree && is_bare_repository_cfg < 1) {
 151                        work_tree = git_work_tree_cfg;
 152                        /* make_absolute_path also normalizes the path */
 153                        if (work_tree && !is_absolute_path(work_tree))
 154                                work_tree = xstrdup(make_absolute_path(git_path("%s", work_tree)));
 155                } else if (work_tree)
 156                        work_tree = xstrdup(make_absolute_path(work_tree));
 157                git_work_tree_initialized = 1;
 158                if (work_tree)
 159                        is_bare_repository_cfg = 0;
 160        }
 161        return work_tree;
 162}
 163
 164char *get_object_directory(void)
 165{
 166        if (!git_object_dir)
 167                setup_git_env();
 168        return git_object_dir;
 169}
 170
 171char *get_index_file(void)
 172{
 173        if (!git_index_file)
 174                setup_git_env();
 175        return git_index_file;
 176}
 177
 178char *get_graft_file(void)
 179{
 180        if (!git_graft_file)
 181                setup_git_env();
 182        return git_graft_file;
 183}
 184
 185int set_git_dir(const char *path)
 186{
 187        if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
 188                return error("Could not set GIT_DIR to '%s'", path);
 189        setup_git_env();
 190        return 0;
 191}