environment.con commit Merge branch 'master' (early part) into pd/bash-4-completion (52c9d8e)
   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 *askpass_program;
  41const char *excludes_file;
  42enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
  43int read_replace_refs = 1;
  44enum eol eol = EOL_UNSET;
  45enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
  46unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
  47enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
  48enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
  49enum push_default_type push_default = PUSH_DEFAULT_MATCHING;
  50#ifndef OBJECT_CREATION_MODE
  51#define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
  52#endif
  53enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
  54char *notes_ref_name;
  55int grafts_replace_parents = 1;
  56int core_apply_sparse_checkout;
  57struct startup_info *startup_info;
  58
  59/* Parallel index stat data preload? */
  60int core_preload_index = 0;
  61
  62/* This is set by setup_git_dir_gently() and/or git_default_config() */
  63char *git_work_tree_cfg;
  64static char *work_tree;
  65
  66static const char *git_dir;
  67static char *git_object_dir, *git_index_file, *git_graft_file;
  68
  69/*
  70 * Repository-local GIT_* environment variables
  71 * Remember to update local_repo_env_size in cache.h when
  72 * the size of the list changes
  73 */
  74const char * const local_repo_env[LOCAL_REPO_ENV_SIZE + 1] = {
  75        ALTERNATE_DB_ENVIRONMENT,
  76        CONFIG_ENVIRONMENT,
  77        CONFIG_DATA_ENVIRONMENT,
  78        DB_ENVIRONMENT,
  79        GIT_DIR_ENVIRONMENT,
  80        GIT_WORK_TREE_ENVIRONMENT,
  81        GRAFT_ENVIRONMENT,
  82        INDEX_ENVIRONMENT,
  83        NO_REPLACE_OBJECTS_ENVIRONMENT,
  84        NULL
  85};
  86
  87static void setup_git_env(void)
  88{
  89        git_dir = getenv(GIT_DIR_ENVIRONMENT);
  90        if (!git_dir) {
  91                git_dir = read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
  92                git_dir = git_dir ? xstrdup(git_dir) : NULL;
  93        }
  94        if (!git_dir)
  95                git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
  96        git_object_dir = getenv(DB_ENVIRONMENT);
  97        if (!git_object_dir) {
  98                git_object_dir = xmalloc(strlen(git_dir) + 9);
  99                sprintf(git_object_dir, "%s/objects", git_dir);
 100        }
 101        git_index_file = getenv(INDEX_ENVIRONMENT);
 102        if (!git_index_file) {
 103                git_index_file = xmalloc(strlen(git_dir) + 7);
 104                sprintf(git_index_file, "%s/index", git_dir);
 105        }
 106        git_graft_file = getenv(GRAFT_ENVIRONMENT);
 107        if (!git_graft_file)
 108                git_graft_file = git_pathdup("info/grafts");
 109        if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
 110                read_replace_refs = 0;
 111}
 112
 113int is_bare_repository(void)
 114{
 115        /* if core.bare is not 'false', let's see if there is a work tree */
 116        return is_bare_repository_cfg && !get_git_work_tree();
 117}
 118
 119int have_git_dir(void)
 120{
 121        return !!git_dir;
 122}
 123
 124const char *get_git_dir(void)
 125{
 126        if (!git_dir)
 127                setup_git_env();
 128        return git_dir;
 129}
 130
 131static int git_work_tree_initialized;
 132
 133/*
 134 * Note.  This works only before you used a work tree.  This was added
 135 * primarily to support git-clone to work in a new repository it just
 136 * created, and is not meant to flip between different work trees.
 137 */
 138void set_git_work_tree(const char *new_work_tree)
 139{
 140        if (is_bare_repository_cfg >= 0)
 141                die("cannot set work tree after initialization");
 142        git_work_tree_initialized = 1;
 143        free(work_tree);
 144        work_tree = xstrdup(make_absolute_path(new_work_tree));
 145        is_bare_repository_cfg = 0;
 146}
 147
 148const char *get_git_work_tree(void)
 149{
 150        if (!git_work_tree_initialized) {
 151                work_tree = getenv(GIT_WORK_TREE_ENVIRONMENT);
 152                /* core.bare = true overrides implicit and config work tree */
 153                if (!work_tree && is_bare_repository_cfg < 1) {
 154                        work_tree = git_work_tree_cfg;
 155                        /* make_absolute_path also normalizes the path */
 156                        if (work_tree && !is_absolute_path(work_tree))
 157                                work_tree = xstrdup(make_absolute_path(git_path("%s", work_tree)));
 158                } else if (work_tree)
 159                        work_tree = xstrdup(make_absolute_path(work_tree));
 160                git_work_tree_initialized = 1;
 161                if (work_tree)
 162                        is_bare_repository_cfg = 0;
 163        }
 164        return work_tree;
 165}
 166
 167char *get_object_directory(void)
 168{
 169        if (!git_object_dir)
 170                setup_git_env();
 171        return git_object_dir;
 172}
 173
 174char *get_index_file(void)
 175{
 176        if (!git_index_file)
 177                setup_git_env();
 178        return git_index_file;
 179}
 180
 181char *get_graft_file(void)
 182{
 183        if (!git_graft_file)
 184                setup_git_env();
 185        return git_graft_file;
 186}
 187
 188int set_git_dir(const char *path)
 189{
 190        if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
 191                return error("Could not set GIT_DIR to '%s'", path);
 192        setup_git_env();
 193        return 0;
 194}