mirror of
https://github.com/git/git.git
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f89baca1b9
Prepare for Git on-disk repository representation to undergo backward incompatible changes by introducing a new repository format version "1", with an extension mechanism. * jk/repository-extension: introduce "preciousObjects" repository extension introduce "extensions" form of core.repositoryformatversion
326 lines
8.7 KiB
C
326 lines
8.7 KiB
C
/*
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* We put all the git config variables in this same object
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* file, so that programs can link against the config parser
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* without having to link against all the rest of git.
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*
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* In particular, no need to bring in libz etc unless needed,
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* even if you might want to know where the git directory etc
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* are.
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*/
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#include "cache.h"
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#include "refs.h"
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#include "fmt-merge-msg.h"
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#include "commit.h"
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int trust_executable_bit = 1;
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int trust_ctime = 1;
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int check_stat = 1;
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int has_symlinks = 1;
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int minimum_abbrev = 4, default_abbrev = 7;
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int ignore_case;
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int assume_unchanged;
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int prefer_symlink_refs;
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int is_bare_repository_cfg = -1; /* unspecified */
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int log_all_ref_updates = -1; /* unspecified */
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int warn_ambiguous_refs = 1;
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int warn_on_object_refname_ambiguity = 1;
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int ref_paranoia = -1;
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int repository_format_version;
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int repository_format_precious_objects;
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const char *git_commit_encoding;
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const char *git_log_output_encoding;
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int shared_repository = PERM_UMASK;
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const char *apply_default_whitespace;
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const char *apply_default_ignorewhitespace;
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const char *git_attributes_file;
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int zlib_compression_level = Z_BEST_SPEED;
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int core_compression_level;
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int core_compression_seen;
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int fsync_object_files;
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size_t packed_git_window_size = DEFAULT_PACKED_GIT_WINDOW_SIZE;
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size_t packed_git_limit = DEFAULT_PACKED_GIT_LIMIT;
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size_t delta_base_cache_limit = 96 * 1024 * 1024;
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unsigned long big_file_threshold = 512 * 1024 * 1024;
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const char *pager_program;
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int pager_use_color = 1;
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const char *editor_program;
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const char *askpass_program;
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const char *excludes_file;
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enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
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int check_replace_refs = 1;
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char *git_replace_ref_base;
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enum eol core_eol = EOL_UNSET;
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enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
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unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
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enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
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enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
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enum push_default_type push_default = PUSH_DEFAULT_UNSPECIFIED;
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#ifndef OBJECT_CREATION_MODE
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#define OBJECT_CREATION_MODE OBJECT_CREATION_USES_HARDLINKS
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#endif
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enum object_creation_mode object_creation_mode = OBJECT_CREATION_MODE;
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char *notes_ref_name;
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int grafts_replace_parents = 1;
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int core_apply_sparse_checkout;
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int merge_log_config = -1;
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int precomposed_unicode = -1; /* see probe_utf8_pathname_composition() */
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struct startup_info *startup_info;
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unsigned long pack_size_limit_cfg;
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#ifndef PROTECT_HFS_DEFAULT
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#define PROTECT_HFS_DEFAULT 0
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#endif
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int protect_hfs = PROTECT_HFS_DEFAULT;
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#ifndef PROTECT_NTFS_DEFAULT
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#define PROTECT_NTFS_DEFAULT 0
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#endif
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int protect_ntfs = PROTECT_NTFS_DEFAULT;
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/*
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* The character that begins a commented line in user-editable file
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* that is subject to stripspace.
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*/
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char comment_line_char = '#';
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int auto_comment_line_char;
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/* Parallel index stat data preload? */
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int core_preload_index = 1;
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/* This is set by setup_git_dir_gently() and/or git_default_config() */
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char *git_work_tree_cfg;
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static char *work_tree;
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static const char *namespace;
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static size_t namespace_len;
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static const char *git_dir, *git_common_dir;
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static char *git_object_dir, *git_index_file, *git_graft_file;
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int git_db_env, git_index_env, git_graft_env, git_common_dir_env;
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/*
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* Repository-local GIT_* environment variables; see cache.h for details.
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*/
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const char * const local_repo_env[] = {
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ALTERNATE_DB_ENVIRONMENT,
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CONFIG_ENVIRONMENT,
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CONFIG_DATA_ENVIRONMENT,
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DB_ENVIRONMENT,
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GIT_DIR_ENVIRONMENT,
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GIT_WORK_TREE_ENVIRONMENT,
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GIT_IMPLICIT_WORK_TREE_ENVIRONMENT,
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GRAFT_ENVIRONMENT,
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INDEX_ENVIRONMENT,
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NO_REPLACE_OBJECTS_ENVIRONMENT,
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GIT_REPLACE_REF_BASE_ENVIRONMENT,
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GIT_PREFIX_ENVIRONMENT,
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GIT_SHALLOW_FILE_ENVIRONMENT,
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GIT_COMMON_DIR_ENVIRONMENT,
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NULL
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};
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static char *expand_namespace(const char *raw_namespace)
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{
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struct strbuf buf = STRBUF_INIT;
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struct strbuf **components, **c;
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if (!raw_namespace || !*raw_namespace)
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return xstrdup("");
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strbuf_addstr(&buf, raw_namespace);
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components = strbuf_split(&buf, '/');
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strbuf_reset(&buf);
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for (c = components; *c; c++)
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if (strcmp((*c)->buf, "/") != 0)
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strbuf_addf(&buf, "refs/namespaces/%s", (*c)->buf);
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strbuf_list_free(components);
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if (check_refname_format(buf.buf, 0))
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die("bad git namespace path \"%s\"", raw_namespace);
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strbuf_addch(&buf, '/');
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return strbuf_detach(&buf, NULL);
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}
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static char *git_path_from_env(const char *envvar, const char *git_dir,
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const char *path, int *fromenv)
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{
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const char *value = getenv(envvar);
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if (!value) {
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char *buf = xmalloc(strlen(git_dir) + strlen(path) + 2);
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sprintf(buf, "%s/%s", git_dir, path);
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return buf;
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}
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if (fromenv)
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*fromenv = 1;
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return xstrdup(value);
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}
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static void setup_git_env(void)
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{
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struct strbuf sb = STRBUF_INIT;
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const char *gitfile;
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const char *shallow_file;
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const char *replace_ref_base;
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git_dir = getenv(GIT_DIR_ENVIRONMENT);
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if (!git_dir)
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git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
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gitfile = read_gitfile(git_dir);
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git_dir = xstrdup(gitfile ? gitfile : git_dir);
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if (get_common_dir(&sb, git_dir))
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git_common_dir_env = 1;
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git_common_dir = strbuf_detach(&sb, NULL);
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git_object_dir = git_path_from_env(DB_ENVIRONMENT, git_common_dir,
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"objects", &git_db_env);
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git_index_file = git_path_from_env(INDEX_ENVIRONMENT, git_dir,
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"index", &git_index_env);
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git_graft_file = git_path_from_env(GRAFT_ENVIRONMENT, git_common_dir,
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"info/grafts", &git_graft_env);
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if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
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check_replace_refs = 0;
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replace_ref_base = getenv(GIT_REPLACE_REF_BASE_ENVIRONMENT);
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git_replace_ref_base = xstrdup(replace_ref_base ? replace_ref_base
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: "refs/replace/");
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namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
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namespace_len = strlen(namespace);
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shallow_file = getenv(GIT_SHALLOW_FILE_ENVIRONMENT);
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if (shallow_file)
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set_alternate_shallow_file(shallow_file, 0);
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}
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int is_bare_repository(void)
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{
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/* if core.bare is not 'false', let's see if there is a work tree */
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return is_bare_repository_cfg && !get_git_work_tree();
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}
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const char *get_git_dir(void)
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{
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if (!git_dir)
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setup_git_env();
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return git_dir;
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}
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const char *get_git_common_dir(void)
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{
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return git_common_dir;
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}
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const char *get_git_namespace(void)
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{
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if (!namespace)
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setup_git_env();
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return namespace;
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}
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const char *strip_namespace(const char *namespaced_ref)
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{
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if (!starts_with(namespaced_ref, get_git_namespace()))
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return NULL;
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return namespaced_ref + namespace_len;
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}
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static int git_work_tree_initialized;
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/*
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* Note. This works only before you used a work tree. This was added
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* primarily to support git-clone to work in a new repository it just
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* created, and is not meant to flip between different work trees.
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*/
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void set_git_work_tree(const char *new_work_tree)
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{
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if (git_work_tree_initialized) {
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new_work_tree = real_path(new_work_tree);
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if (strcmp(new_work_tree, work_tree))
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die("internal error: work tree has already been set\n"
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"Current worktree: %s\nNew worktree: %s",
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work_tree, new_work_tree);
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return;
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}
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git_work_tree_initialized = 1;
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work_tree = xstrdup(real_path(new_work_tree));
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if (setenv(GIT_WORK_TREE_ENVIRONMENT, work_tree, 1))
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die("could not set GIT_WORK_TREE to '%s'", work_tree);
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}
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const char *get_git_work_tree(void)
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{
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return work_tree;
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}
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char *get_object_directory(void)
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{
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if (!git_object_dir)
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setup_git_env();
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return git_object_dir;
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}
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int odb_mkstemp(char *template, size_t limit, const char *pattern)
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{
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int fd;
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/*
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* we let the umask do its job, don't try to be more
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* restrictive except to remove write permission.
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*/
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int mode = 0444;
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snprintf(template, limit, "%s/%s",
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get_object_directory(), pattern);
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fd = git_mkstemp_mode(template, mode);
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if (0 <= fd)
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return fd;
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/* slow path */
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/* some mkstemp implementations erase template on failure */
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snprintf(template, limit, "%s/%s",
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get_object_directory(), pattern);
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safe_create_leading_directories(template);
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return xmkstemp_mode(template, mode);
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}
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int odb_pack_keep(char *name, size_t namesz, const unsigned char *sha1)
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{
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int fd;
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snprintf(name, namesz, "%s/pack/pack-%s.keep",
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get_object_directory(), sha1_to_hex(sha1));
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fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
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if (0 <= fd)
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return fd;
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/* slow path */
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safe_create_leading_directories(name);
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return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
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}
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char *get_index_file(void)
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{
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if (!git_index_file)
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setup_git_env();
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return git_index_file;
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}
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char *get_graft_file(void)
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{
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if (!git_graft_file)
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setup_git_env();
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return git_graft_file;
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}
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int set_git_dir(const char *path)
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{
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if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
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return error("Could not set GIT_DIR to '%s'", path);
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setup_git_env();
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return 0;
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}
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const char *get_log_output_encoding(void)
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{
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return git_log_output_encoding ? git_log_output_encoding
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: get_commit_output_encoding();
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}
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const char *get_commit_output_encoding(void)
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{
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return git_commit_encoding ? git_commit_encoding : "UTF-8";
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}
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