1 files changed, 124 insertions, 84 deletions

diff --git a/environment.c b/environment.c
index 42dc3106d2..89af47cb85 100644
--- a/environment.c
+++ b/environment.c
@@ -8,9 +8,15 @@
  * are.
  */
 #include "cache.h"
+#include "branch.h"
+#include "repository.h"
+#include "config.h"
 #include "refs.h"
 #include "fmt-merge-msg.h"
 #include "commit.h"
+#include "argv-array.h"
+#include "object-store.h"
+#include "chdir-notify.h"
 
 int trust_executable_bit = 1;
 int trust_ctime = 1;
@@ -25,6 +31,9 @@ int warn_ambiguous_refs = 1;
 int warn_on_object_refname_ambiguity = 1;
 int ref_paranoia = -1;
 int repository_format_precious_objects;
+char *repository_format_partial_clone;
+const char *core_partial_clone_filter_default;
+int repository_format_worktree_config;
 const char *git_commit_encoding;
 const char *git_log_output_encoding;
 const char *apply_default_whitespace;
@@ -44,10 +53,11 @@ const char *editor_program;
 const char *askpass_program;
 const char *excludes_file;
 enum auto_crlf auto_crlf = AUTO_CRLF_FALSE;
-int check_replace_refs = 1;
+int read_replace_refs = 1;
 char *git_replace_ref_base;
 enum eol core_eol = EOL_UNSET;
-enum safe_crlf safe_crlf = SAFE_CRLF_WARN;
+int global_conv_flags_eol = CONV_EOL_RNDTRP_WARN;
+char *check_roundtrip_encoding = "SHIFT-JIS";
 unsigned whitespace_rule_cfg = WS_DEFAULT_RULE;
 enum branch_track git_branch_track = BRANCH_TRACK_REMOTE;
 enum rebase_setup_type autorebase = AUTOREBASE_NEVER;
@@ -62,7 +72,6 @@ int core_apply_sparse_checkout;
 int merge_log_config = -1;
 int precomposed_unicode = -1; /* see probe_utf8_pathname_composition() */
 unsigned long pack_size_limit_cfg;
-enum hide_dotfiles_type hide_dotfiles = HIDE_DOTFILES_DOTGITONLY;
 enum log_refs_config log_all_ref_updates = LOG_REFS_UNSET;
 
 #ifndef PROTECT_HFS_DEFAULT
@@ -74,6 +83,7 @@ int protect_hfs = PROTECT_HFS_DEFAULT;
 #define PROTECT_NTFS_DEFAULT 0
 #endif
 int protect_ntfs = PROTECT_NTFS_DEFAULT;
+const char *core_fsmonitor;
 
 /*
  * The character that begins a commented line in user-editable file
@@ -94,16 +104,10 @@ int ignore_untracked_cache_config;
 
 /* This is set by setup_git_dir_gently() and/or git_default_config() */
 char *git_work_tree_cfg;
-static char *work_tree;
 
-static const char *namespace;
-static size_t namespace_len;
+static char *git_namespace;
 
-static const char *super_prefix;
-
-static const char *git_dir, *git_common_dir;
-static char *git_object_dir, *git_index_file, *git_graft_file;
-int git_db_env, git_index_env, git_graft_env, git_common_dir_env;
+static char *super_prefix;
 
 /*
  * Repository-local GIT_* environment variables; see cache.h for details.
@@ -143,53 +147,52 @@ static char *expand_namespace(const char *raw_namespace)
 			strbuf_addf(&buf, "refs/namespaces/%s", (*c)->buf);
 	strbuf_list_free(components);
 	if (check_refname_format(buf.buf, 0))
-		die("bad git namespace path \"%s\"", raw_namespace);
+		die(_("bad git namespace path \"%s\""), raw_namespace);
 	strbuf_addch(&buf, '/');
 	return strbuf_detach(&buf, NULL);
 }
 
-static char *git_path_from_env(const char *envvar, const char *git_dir,
-			       const char *path, int *fromenv)
+/*
+ * Wrapper of getenv() that returns a strdup value. This value is kept
+ * in argv to be freed later.
+ */
+static const char *getenv_safe(struct argv_array *argv, const char *name)
 {
-	const char *value = getenv(envvar);
+	const char *value = getenv(name);
+
 	if (!value)
-		return xstrfmt("%s/%s", git_dir, path);
-	if (fromenv)
-		*fromenv = 1;
-	return xstrdup(value);
+		return NULL;
+
+	argv_array_push(argv, value);
+	return argv->argv[argv->argc - 1];
 }
 
-static void setup_git_env(void)
+void setup_git_env(const char *git_dir)
 {
-	struct strbuf sb = STRBUF_INIT;
-	const char *gitfile;
 	const char *shallow_file;
 	const char *replace_ref_base;
+	struct set_gitdir_args args = { NULL };
+	struct argv_array to_free = ARGV_ARRAY_INIT;
+
+	args.commondir = getenv_safe(&to_free, GIT_COMMON_DIR_ENVIRONMENT);
+	args.object_dir = getenv_safe(&to_free, DB_ENVIRONMENT);
+	args.graft_file = getenv_safe(&to_free, GRAFT_ENVIRONMENT);
+	args.index_file = getenv_safe(&to_free, INDEX_ENVIRONMENT);
+	args.alternate_db = getenv_safe(&to_free, ALTERNATE_DB_ENVIRONMENT);
+	repo_set_gitdir(the_repository, git_dir, &args);
+	argv_array_clear(&to_free);
 
-	git_dir = getenv(GIT_DIR_ENVIRONMENT);
-	if (!git_dir)
-		git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
-	gitfile = read_gitfile(git_dir);
-	git_dir = xstrdup(gitfile ? gitfile : git_dir);
-	if (get_common_dir(&sb, git_dir))
-		git_common_dir_env = 1;
-	git_common_dir = strbuf_detach(&sb, NULL);
-	git_object_dir = git_path_from_env(DB_ENVIRONMENT, git_common_dir,
-					   "objects", &git_db_env);
-	git_index_file = git_path_from_env(INDEX_ENVIRONMENT, git_dir,
-					   "index", &git_index_env);
-	git_graft_file = git_path_from_env(GRAFT_ENVIRONMENT, git_common_dir,
-					   "info/grafts", &git_graft_env);
 	if (getenv(NO_REPLACE_OBJECTS_ENVIRONMENT))
-		check_replace_refs = 0;
+		read_replace_refs = 0;
 	replace_ref_base = getenv(GIT_REPLACE_REF_BASE_ENVIRONMENT);
+	free(git_replace_ref_base);
 	git_replace_ref_base = xstrdup(replace_ref_base ? replace_ref_base
 							  : "refs/replace/");
-	namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
-	namespace_len = strlen(namespace);
+	free(git_namespace);
+	git_namespace = expand_namespace(getenv(GIT_NAMESPACE_ENVIRONMENT));
 	shallow_file = getenv(GIT_SHALLOW_FILE_ENVIRONMENT);
 	if (shallow_file)
-		set_alternate_shallow_file(shallow_file, 0);
+		set_alternate_shallow_file(the_repository, shallow_file, 0);
 }
 
 int is_bare_repository(void)
@@ -201,41 +204,43 @@ int is_bare_repository(void)
 int have_git_dir(void)
 {
 	return startup_info->have_repository
-		|| git_dir
-		|| getenv(GIT_DIR_ENVIRONMENT);
+		|| the_repository->gitdir;
 }
 
 const char *get_git_dir(void)
 {
-	if (!git_dir)
-		setup_git_env();
-	return git_dir;
+	if (!the_repository->gitdir)
+		BUG("git environment hasn't been setup");
+	return the_repository->gitdir;
 }
 
 const char *get_git_common_dir(void)
 {
-	return git_common_dir;
+	if (!the_repository->commondir)
+		BUG("git environment hasn't been setup");
+	return the_repository->commondir;
 }
 
 const char *get_git_namespace(void)
 {
-	if (!namespace)
-		setup_git_env();
-	return namespace;
+	if (!git_namespace)
+		BUG("git environment hasn't been setup");
+	return git_namespace;
 }
 
 const char *strip_namespace(const char *namespaced_ref)
 {
-	if (!starts_with(namespaced_ref, get_git_namespace()))
-		return NULL;
-	return namespaced_ref + namespace_len;
+	const char *out;
+	if (skip_prefix(namespaced_ref, get_git_namespace(), &out))
+		return out;
+	return NULL;
 }
 
 const char *get_super_prefix(void)
 {
 	static int initialized;
 	if (!initialized) {
-		super_prefix = getenv(GIT_SUPER_PREFIX_ENVIRONMENT);
+		super_prefix = xstrdup_or_null(getenv(GIT_SUPER_PREFIX_ENVIRONMENT));
 		initialized = 1;
 	}
 	return super_prefix;
@@ -252,29 +257,29 @@ void set_git_work_tree(const char *new_work_tree)
 {
 	if (git_work_tree_initialized) {
 		new_work_tree = real_path(new_work_tree);
-		if (strcmp(new_work_tree, work_tree))
+		if (strcmp(new_work_tree, the_repository->worktree))
 			die("internal error: work tree has already been set\n"
 			    "Current worktree: %s\nNew worktree: %s",
-			    work_tree, new_work_tree);
+			    the_repository->worktree, new_work_tree);
 		return;
 	}
 	git_work_tree_initialized = 1;
-	work_tree = real_pathdup(new_work_tree, 1);
+	repo_set_worktree(the_repository, new_work_tree);
 }
 
 const char *get_git_work_tree(void)
 {
-	return work_tree;
+	return the_repository->worktree;
 }
 
 char *get_object_directory(void)
 {
-	if (!git_object_dir)
-		setup_git_env();
-	return git_object_dir;
+	if (!the_repository->objects->odb)
+		BUG("git environment hasn't been setup");
+	return the_repository->objects->odb->path;
 }
 
-int odb_mkstemp(char *template, size_t limit, const char *pattern)
+int odb_mkstemp(struct strbuf *temp_filename, const char *pattern)
 {
 	int fd;
 	/*
@@ -282,55 +287,70 @@ int odb_mkstemp(char *template, size_t limit, const char *pattern)
 	 * restrictive except to remove write permission.
 	 */
 	int mode = 0444;
-	snprintf(template, limit, "%s/%s",
-		 get_object_directory(), pattern);
-	fd = git_mkstemp_mode(template, mode);
+	git_path_buf(temp_filename, "objects/%s", pattern);
+	fd = git_mkstemp_mode(temp_filename->buf, mode);
 	if (0 <= fd)
 		return fd;
 
 	/* slow path */
-	/* some mkstemp implementations erase template on failure */
-	snprintf(template, limit, "%s/%s",
-		 get_object_directory(), pattern);
-	safe_create_leading_directories(template);
-	return xmkstemp_mode(template, mode);
+	/* some mkstemp implementations erase temp_filename on failure */
+	git_path_buf(temp_filename, "objects/%s", pattern);
+	safe_create_leading_directories(temp_filename->buf);
+	return xmkstemp_mode(temp_filename->buf, mode);
 }
 
-int odb_pack_keep(char *name, size_t namesz, const unsigned char *sha1)
+int odb_pack_keep(const char *name)
 {
 	int fd;
 
-	snprintf(name, namesz, "%s/pack/pack-%s.keep",
-		 get_object_directory(), sha1_to_hex(sha1));
 	fd = open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
 	if (0 <= fd)
 		return fd;
 
 	/* slow path */
-	safe_create_leading_directories(name);
+	safe_create_leading_directories_const(name);
 	return open(name, O_RDWR|O_CREAT|O_EXCL, 0600);
 }
 
 char *get_index_file(void)
 {
-	if (!git_index_file)
-		setup_git_env();
-	return git_index_file;
+	if (!the_repository->index_file)
+		BUG("git environment hasn't been setup");
+	return the_repository->index_file;
 }
 
-char *get_graft_file(void)
+char *get_graft_file(struct repository *r)
 {
-	if (!git_graft_file)
-		setup_git_env();
-	return git_graft_file;
+	if (!r->graft_file)
+		BUG("git environment hasn't been setup");
+	return r->graft_file;
 }
 
-int set_git_dir(const char *path)
+static void set_git_dir_1(const char *path)
 {
 	if (setenv(GIT_DIR_ENVIRONMENT, path, 1))
-		return error("Could not set GIT_DIR to '%s'", path);
-	setup_git_env();
-	return 0;
+		die(_("could not set GIT_DIR to '%s'"), path);
+	setup_git_env(path);
+}
+
+static void update_relative_gitdir(const char *name,
+				   const char *old_cwd,
+				   const char *new_cwd,
+				   void *data)
+{
+	char *path = reparent_relative_path(old_cwd, new_cwd, get_git_dir());
+	trace_printf_key(&trace_setup_key,
+			 "setup: move $GIT_DIR to '%s'",
+			 path);
+	set_git_dir_1(path);
+	free(path);
+}
+
+void set_git_dir(const char *path)
+{
+	set_git_dir_1(path);
+	if (!is_absolute_path(path))
+		chdir_notify_register(NULL, update_relative_gitdir, NULL);
 }
 
 const char *get_log_output_encoding(void)
@@ -369,3 +389,23 @@ void reset_shared_repository(void)
 {
 	need_shared_repository_from_config = 1;
 }
+
+int use_optional_locks(void)
+{
+	return git_env_bool(GIT_OPTIONAL_LOCKS_ENVIRONMENT, 1);
+}
+
+int print_sha1_ellipsis(void)
+{
+	/*
+	 * Determine if the calling environment contains the variable
+	 * GIT_PRINT_SHA1_ELLIPSIS set to "yes".
+	 */
+	static int cached_result = -1; /* unknown */
+
+	if (cached_result < 0) {
+		const char *v = getenv("GIT_PRINT_SHA1_ELLIPSIS");
+		cached_result = (v && !strcasecmp(v, "yes"));
+	}
+	return cached_result;
+}