1 files changed, 697 insertions, 0 deletions

diff --git a/builtin/config.c b/builtin/config.c
new file mode 100644
index 0000000..d32c532
--- /dev/null
+++ b/builtin/config.c
@@ -0,0 +1,697 @@
+#include "builtin.h"
+#include "cache.h"
+#include "color.h"
+#include "parse-options.h"
+#include "urlmatch.h"
+
+static const char *const builtin_config_usage[] = {
+	N_("git config [<options>]"),
+	NULL
+};
+
+static char *key;
+static regex_t *key_regexp;
+static regex_t *regexp;
+static int show_keys;
+static int use_key_regexp;
+static int do_all;
+static int do_not_match;
+static char delim = '=';
+static char key_delim = ' ';
+static char term = '\n';
+
+static int use_global_config, use_system_config, use_local_config;
+static struct git_config_source given_config_source;
+static int actions, types;
+static const char *get_color_slot, *get_colorbool_slot;
+static int end_null;
+static int respect_includes = -1;
+
+#define ACTION_GET (1<<0)
+#define ACTION_GET_ALL (1<<1)
+#define ACTION_GET_REGEXP (1<<2)
+#define ACTION_REPLACE_ALL (1<<3)
+#define ACTION_ADD (1<<4)
+#define ACTION_UNSET (1<<5)
+#define ACTION_UNSET_ALL (1<<6)
+#define ACTION_RENAME_SECTION (1<<7)
+#define ACTION_REMOVE_SECTION (1<<8)
+#define ACTION_LIST (1<<9)
+#define ACTION_EDIT (1<<10)
+#define ACTION_SET (1<<11)
+#define ACTION_SET_ALL (1<<12)
+#define ACTION_GET_COLOR (1<<13)
+#define ACTION_GET_COLORBOOL (1<<14)
+#define ACTION_GET_URLMATCH (1<<15)
+
+#define TYPE_BOOL (1<<0)
+#define TYPE_INT (1<<1)
+#define TYPE_BOOL_OR_INT (1<<2)
+#define TYPE_PATH (1<<3)
+
+static struct option builtin_config_options[] = {
+	OPT_GROUP(N_("Config file location")),
+	OPT_BOOL(0, "global", &use_global_config, N_("use global config file")),
+	OPT_BOOL(0, "system", &use_system_config, N_("use system config file")),
+	OPT_BOOL(0, "local", &use_local_config, N_("use repository config file")),
+	OPT_STRING('f', "file", &given_config_source.file, N_("file"), N_("use given config file")),
+	OPT_STRING(0, "blob", &given_config_source.blob, N_("blob-id"), N_("read config from given blob object")),
+	OPT_GROUP(N_("Action")),
+	OPT_BIT(0, "get", &actions, N_("get value: name [value-regex]"), ACTION_GET),
+	OPT_BIT(0, "get-all", &actions, N_("get all values: key [value-regex]"), ACTION_GET_ALL),
+	OPT_BIT(0, "get-regexp", &actions, N_("get values for regexp: name-regex [value-regex]"), ACTION_GET_REGEXP),
+	OPT_BIT(0, "get-urlmatch", &actions, N_("get value specific for the URL: section[.var] URL"), ACTION_GET_URLMATCH),
+	OPT_BIT(0, "replace-all", &actions, N_("replace all matching variables: name value [value_regex]"), ACTION_REPLACE_ALL),
+	OPT_BIT(0, "add", &actions, N_("add a new variable: name value"), ACTION_ADD),
+	OPT_BIT(0, "unset", &actions, N_("remove a variable: name [value-regex]"), ACTION_UNSET),
+	OPT_BIT(0, "unset-all", &actions, N_("remove all matches: name [value-regex]"), ACTION_UNSET_ALL),
+	OPT_BIT(0, "rename-section", &actions, N_("rename section: old-name new-name"), ACTION_RENAME_SECTION),
+	OPT_BIT(0, "remove-section", &actions, N_("remove a section: name"), ACTION_REMOVE_SECTION),
+	OPT_BIT('l', "list", &actions, N_("list all"), ACTION_LIST),
+	OPT_BIT('e', "edit", &actions, N_("open an editor"), ACTION_EDIT),
+	OPT_BIT(0, "get-color", &actions, N_("find the color configured: slot [default]"), ACTION_GET_COLOR),
+	OPT_BIT(0, "get-colorbool", &actions, N_("find the color setting: slot [stdout-is-tty]"), ACTION_GET_COLORBOOL),
+	OPT_GROUP(N_("Type")),
+	OPT_BIT(0, "bool", &types, N_("value is \"true\" or \"false\""), TYPE_BOOL),
+	OPT_BIT(0, "int", &types, N_("value is decimal number"), TYPE_INT),
+	OPT_BIT(0, "bool-or-int", &types, N_("value is --bool or --int"), TYPE_BOOL_OR_INT),
+	OPT_BIT(0, "path", &types, N_("value is a path (file or directory name)"), TYPE_PATH),
+	OPT_GROUP(N_("Other")),
+	OPT_BOOL('z', "null", &end_null, N_("terminate values with NUL byte")),
+	OPT_BOOL(0, "includes", &respect_includes, N_("respect include directives on lookup")),
+	OPT_END(),
+};
+
+static void check_argc(int argc, int min, int max) {
+	if (argc >= min && argc <= max)
+		return;
+	error("wrong number of arguments");
+	usage_with_options(builtin_config_usage, builtin_config_options);
+}
+
+static int show_all_config(const char *key_, const char *value_, void *cb)
+{
+	if (value_)
+		printf("%s%c%s%c", key_, delim, value_, term);
+	else
+		printf("%s%c", key_, term);
+	return 0;
+}
+
+struct strbuf_list {
+	struct strbuf *items;
+	int nr;
+	int alloc;
+};
+
+static int format_config(struct strbuf *buf, const char *key_, const char *value_)
+{
+	int must_free_vptr = 0;
+	int must_print_delim = 0;
+	char value[256];
+	const char *vptr = value;
+
+	strbuf_init(buf, 0);
+
+	if (show_keys) {
+		strbuf_addstr(buf, key_);
+		must_print_delim = 1;
+	}
+	if (types == TYPE_INT)
+		sprintf(value, "%"PRId64,
+			git_config_int64(key_, value_ ? value_ : ""));
+	else if (types == TYPE_BOOL)
+		vptr = git_config_bool(key_, value_) ? "true" : "false";
+	else if (types == TYPE_BOOL_OR_INT) {
+		int is_bool, v;
+		v = git_config_bool_or_int(key_, value_, &is_bool);
+		if (is_bool)
+			vptr = v ? "true" : "false";
+		else
+			sprintf(value, "%d", v);
+	} else if (types == TYPE_PATH) {
+		if (git_config_pathname(&vptr, key_, value_) < 0)
+			return -1;
+		must_free_vptr = 1;
+	} else if (value_) {
+		vptr = value_;
+	} else {
+		/* Just show the key name */
+		vptr = "";
+		must_print_delim = 0;
+	}
+
+	if (must_print_delim)
+		strbuf_addch(buf, key_delim);
+	strbuf_addstr(buf, vptr);
+	strbuf_addch(buf, term);
+
+	if (must_free_vptr)
+		free((char *)vptr);
+	return 0;
+}
+
+static int collect_config(const char *key_, const char *value_, void *cb)
+{
+	struct strbuf_list *values = cb;
+
+	if (!use_key_regexp && strcmp(key_, key))
+		return 0;
+	if (use_key_regexp && regexec(key_regexp, key_, 0, NULL, 0))
+		return 0;
+	if (regexp != NULL &&
+	    (do_not_match ^ !!regexec(regexp, (value_?value_:""), 0, NULL, 0)))
+		return 0;
+
+	ALLOC_GROW(values->items, values->nr + 1, values->alloc);
+
+	return format_config(&values->items[values->nr++], key_, value_);
+}
+
+static int get_value(const char *key_, const char *regex_)
+{
+	int ret = CONFIG_GENERIC_ERROR;
+	struct strbuf_list values = {NULL};
+	int i;
+
+	if (use_key_regexp) {
+		char *tl;
+
+		/*
+		 * NEEDSWORK: this naive pattern lowercasing obviously does not
+		 * work for more complex patterns like "^[^.]*Foo.*bar".
+		 * Perhaps we should deprecate this altogether someday.
+		 */
+
+		key = xstrdup(key_);
+		for (tl = key + strlen(key) - 1;
+		     tl >= key && *tl != '.';
+		     tl--)
+			*tl = tolower(*tl);
+		for (tl = key; *tl && *tl != '.'; tl++)
+			*tl = tolower(*tl);
+
+		key_regexp = (regex_t*)xmalloc(sizeof(regex_t));
+		if (regcomp(key_regexp, key, REG_EXTENDED)) {
+			fprintf(stderr, "Invalid key pattern: %s\n", key_);
+			free(key_regexp);
+			key_regexp = NULL;
+			ret = CONFIG_INVALID_PATTERN;
+			goto free_strings;
+		}
+	} else {
+		if (git_config_parse_key(key_, &key, NULL)) {
+			ret = CONFIG_INVALID_KEY;
+			goto free_strings;
+		}
+	}
+
+	if (regex_) {
+		if (regex_[0] == '!') {
+			do_not_match = 1;
+			regex_++;
+		}
+
+		regexp = (regex_t*)xmalloc(sizeof(regex_t));
+		if (regcomp(regexp, regex_, REG_EXTENDED)) {
+			fprintf(stderr, "Invalid pattern: %s\n", regex_);
+			free(regexp);
+			regexp = NULL;
+			ret = CONFIG_INVALID_PATTERN;
+			goto free_strings;
+		}
+	}
+
+	git_config_with_options(collect_config, &values,
+				&given_config_source, respect_includes);
+
+	ret = !values.nr;
+
+	for (i = 0; i < values.nr; i++) {
+		struct strbuf *buf = values.items + i;
+		if (do_all || i == values.nr - 1)
+			fwrite(buf->buf, 1, buf->len, stdout);
+		strbuf_release(buf);
+	}
+	free(values.items);
+
+free_strings:
+	free(key);
+	if (key_regexp) {
+		regfree(key_regexp);
+		free(key_regexp);
+	}
+	if (regexp) {
+		regfree(regexp);
+		free(regexp);
+	}
+
+	return ret;
+}
+
+static char *normalize_value(const char *key, const char *value)
+{
+	char *normalized;
+
+	if (!value)
+		return NULL;
+
+	if (types == 0 || types == TYPE_PATH)
+		/*
+		 * We don't do normalization for TYPE_PATH here: If
+		 * the path is like ~/foobar/, we prefer to store
+		 * "~/foobar/" in the config file, and to expand the ~
+		 * when retrieving the value.
+		 */
+		normalized = xstrdup(value);
+	else {
+		normalized = xmalloc(64);
+		if (types == TYPE_INT) {
+			int64_t v = git_config_int64(key, value);
+			sprintf(normalized, "%"PRId64, v);
+		}
+		else if (types == TYPE_BOOL)
+			sprintf(normalized, "%s",
+				git_config_bool(key, value) ? "true" : "false");
+		else if (types == TYPE_BOOL_OR_INT) {
+			int is_bool, v;
+			v = git_config_bool_or_int(key, value, &is_bool);
+			if (!is_bool)
+				sprintf(normalized, "%d", v);
+			else
+				sprintf(normalized, "%s", v ? "true" : "false");
+		}
+	}
+
+	return normalized;
+}
+
+static int get_color_found;
+static const char *get_color_slot;
+static const char *get_colorbool_slot;
+static char parsed_color[COLOR_MAXLEN];
+
+static int git_get_color_config(const char *var, const char *value, void *cb)
+{
+	if (!strcmp(var, get_color_slot)) {
+		if (!value)
+			config_error_nonbool(var);
+		if (color_parse(value, parsed_color) < 0)
+			return -1;
+		get_color_found = 1;
+	}
+	return 0;
+}
+
+static void get_color(const char *var, const char *def_color)
+{
+	get_color_slot = var;
+	get_color_found = 0;
+	parsed_color[0] = '\0';
+	git_config_with_options(git_get_color_config, NULL,
+				&given_config_source, respect_includes);
+
+	if (!get_color_found && def_color) {
+		if (color_parse(def_color, parsed_color) < 0)
+			die(_("unable to parse default color value"));
+	}
+
+	fputs(parsed_color, stdout);
+}
+
+static int get_colorbool_found;
+static int get_diff_color_found;
+static int get_color_ui_found;
+static int git_get_colorbool_config(const char *var, const char *value,
+		void *cb)
+{
+	if (!strcmp(var, get_colorbool_slot))
+		get_colorbool_found = git_config_colorbool(var, value);
+	else if (!strcmp(var, "diff.color"))
+		get_diff_color_found = git_config_colorbool(var, value);
+	else if (!strcmp(var, "color.ui"))
+		get_color_ui_found = git_config_colorbool(var, value);
+	return 0;
+}
+
+static int get_colorbool(const char *var, int print)
+{
+	get_colorbool_slot = var;
+	get_colorbool_found = -1;
+	get_diff_color_found = -1;
+	get_color_ui_found = -1;
+	git_config_with_options(git_get_colorbool_config, NULL,
+				&given_config_source, respect_includes);
+
+	if (get_colorbool_found < 0) {
+		if (!strcmp(get_colorbool_slot, "color.diff"))
+			get_colorbool_found = get_diff_color_found;
+		if (get_colorbool_found < 0)
+			get_colorbool_found = get_color_ui_found;
+	}
+
+	if (get_colorbool_found < 0)
+		/* default value if none found in config */
+		get_colorbool_found = GIT_COLOR_AUTO;
+
+	get_colorbool_found = want_color(get_colorbool_found);
+
+	if (print) {
+		printf("%s\n", get_colorbool_found ? "true" : "false");
+		return 0;
+	} else
+		return get_colorbool_found ? 0 : 1;
+}
+
+static void check_write(void)
+{
+	if (given_config_source.use_stdin)
+		die("writing to stdin is not supported");
+
+	if (given_config_source.blob)
+		die("writing config blobs is not supported");
+}
+
+struct urlmatch_current_candidate_value {
+	char value_is_null;
+	struct strbuf value;
+};
+
+static int urlmatch_collect_fn(const char *var, const char *value, void *cb)
+{
+	struct string_list *values = cb;
+	struct string_list_item *item = string_list_insert(values, var);
+	struct urlmatch_current_candidate_value *matched = item->util;
+
+	if (!matched) {
+		matched = xmalloc(sizeof(*matched));
+		strbuf_init(&matched->value, 0);
+		item->util = matched;
+	} else {
+		strbuf_reset(&matched->value);
+	}
+
+	if (value) {
+		strbuf_addstr(&matched->value, value);
+		matched->value_is_null = 0;
+	} else {
+		matched->value_is_null = 1;
+	}
+	return 0;
+}
+
+static int get_urlmatch(const char *var, const char *url)
+{
+	char *section_tail;
+	struct string_list_item *item;
+	struct urlmatch_config config = { STRING_LIST_INIT_DUP };
+	struct string_list values = STRING_LIST_INIT_DUP;
+
+	config.collect_fn = urlmatch_collect_fn;
+	config.cascade_fn = NULL;
+	config.cb = &values;
+
+	if (!url_normalize(url, &config.url))
+		die("%s", config.url.err);
+
+	config.section = xstrdup_tolower(var);
+	section_tail = strchr(config.section, '.');
+	if (section_tail) {
+		*section_tail = '\0';
+		config.key = section_tail + 1;
+		show_keys = 0;
+	} else {
+		config.key = NULL;
+		show_keys = 1;
+	}
+
+	git_config_with_options(urlmatch_config_entry, &config,
+				&given_config_source, respect_includes);
+
+	for_each_string_list_item(item, &values) {
+		struct urlmatch_current_candidate_value *matched = item->util;
+		struct strbuf key = STRBUF_INIT;
+		struct strbuf buf = STRBUF_INIT;
+
+		strbuf_addstr(&key, item->string);
+		format_config(&buf, key.buf,
+			      matched->value_is_null ? NULL : matched->value.buf);
+		fwrite(buf.buf, 1, buf.len, stdout);
+		strbuf_release(&key);
+		strbuf_release(&buf);
+
+		strbuf_release(&matched->value);
+	}
+	string_list_clear(&config.vars, 1);
+	string_list_clear(&values, 1);
+	free(config.url.url);
+
+	free((void *)config.section);
+	return 0;
+}
+
+static char *default_user_config(void)
+{
+	struct strbuf buf = STRBUF_INIT;
+	strbuf_addf(&buf,
+		    _("# This is Git's per-user configuration file.\n"
+		      "[core]\n"
+		      "# Please adapt and uncomment the following lines:\n"
+		      "#	user = %s\n"
+		      "#	email = %s\n"),
+		    ident_default_name(),
+		    ident_default_email());
+	return strbuf_detach(&buf, NULL);
+}
+
+int cmd_config(int argc, const char **argv, const char *prefix)
+{
+	int nongit = !startup_info->have_repository;
+	char *value;
+
+	given_config_source.file = getenv(CONFIG_ENVIRONMENT);
+
+	argc = parse_options(argc, argv, prefix, builtin_config_options,
+			     builtin_config_usage,
+			     PARSE_OPT_STOP_AT_NON_OPTION);
+
+	if (use_global_config + use_system_config + use_local_config +
+	    !!given_config_source.file + !!given_config_source.blob > 1) {
+		error("only one config file at a time.");
+		usage_with_options(builtin_config_usage, builtin_config_options);
+	}
+
+	if (given_config_source.file &&
+			!strcmp(given_config_source.file, "-")) {
+		given_config_source.file = NULL;
+		given_config_source.use_stdin = 1;
+	}
+
+	if (use_global_config) {
+		char *user_config = NULL;
+		char *xdg_config = NULL;
+
+		home_config_paths(&user_config, &xdg_config, "config");
+
+		if (!user_config)
+			/*
+			 * It is unknown if HOME/.gitconfig exists, so
+			 * we do not know if we should write to XDG
+			 * location; error out even if XDG_CONFIG_HOME
+			 * is set and points at a sane location.
+			 */
+			die("$HOME not set");
+
+		if (access_or_warn(user_config, R_OK, 0) &&
+		    xdg_config && !access_or_warn(xdg_config, R_OK, 0))
+			given_config_source.file = xdg_config;
+		else
+			given_config_source.file = user_config;
+	}
+	else if (use_system_config)
+		given_config_source.file = git_etc_gitconfig();
+	else if (use_local_config)
+		given_config_source.file = git_pathdup("config");
+	else if (given_config_source.file) {
+		if (!is_absolute_path(given_config_source.file) && prefix)
+			given_config_source.file =
+				xstrdup(prefix_filename(prefix,
+							strlen(prefix),
+							given_config_source.file));
+	}
+
+	if (respect_includes == -1)
+		respect_includes = !given_config_source.file;
+
+	if (end_null) {
+		term = '\0';
+		delim = '\n';
+		key_delim = '\n';
+	}
+
+	if (HAS_MULTI_BITS(types)) {
+		error("only one type at a time.");
+		usage_with_options(builtin_config_usage, builtin_config_options);
+	}
+
+	if ((actions & (ACTION_GET_COLOR|ACTION_GET_COLORBOOL)) && types) {
+		error("--get-color and variable type are incoherent");
+		usage_with_options(builtin_config_usage, builtin_config_options);
+	}
+
+	if (HAS_MULTI_BITS(actions)) {
+		error("only one action at a time.");
+		usage_with_options(builtin_config_usage, builtin_config_options);
+	}
+	if (actions == 0)
+		switch (argc) {
+		case 1: actions = ACTION_GET; break;
+		case 2: actions = ACTION_SET; break;
+		case 3: actions = ACTION_SET_ALL; break;
+		default:
+			usage_with_options(builtin_config_usage, builtin_config_options);
+		}
+
+	if (actions == ACTION_LIST) {
+		check_argc(argc, 0, 0);
+		if (git_config_with_options(show_all_config, NULL,
+					    &given_config_source,
+					    respect_includes) < 0) {
+			if (given_config_source.file)
+				die_errno("unable to read config file '%s'",
+					  given_config_source.file);
+			else
+				die("error processing config file(s)");
+		}
+	}
+	else if (actions == ACTION_EDIT) {
+		char *config_file;
+
+		check_argc(argc, 0, 0);
+		if (!given_config_source.file && nongit)
+			die("not in a git directory");
+		if (given_config_source.use_stdin)
+			die("editing stdin is not supported");
+		if (given_config_source.blob)
+			die("editing blobs is not supported");
+		git_config(git_default_config, NULL);
+		config_file = xstrdup(given_config_source.file ?
+				      given_config_source.file : git_path("config"));
+		if (use_global_config) {
+			int fd = open(config_file, O_CREAT | O_EXCL | O_WRONLY, 0666);
+			if (fd) {
+				char *content = default_user_config();
+				write_str_in_full(fd, content);
+				free(content);
+				close(fd);
+			}
+			else if (errno != EEXIST)
+				die_errno(_("cannot create configuration file %s"), config_file);
+		}
+		launch_editor(config_file, NULL, NULL);
+		free(config_file);
+	}
+	else if (actions == ACTION_SET) {
+		int ret;
+		check_write();
+		check_argc(argc, 2, 2);
+		value = normalize_value(argv[0], argv[1]);
+		ret = git_config_set_in_file(given_config_source.file, argv[0], value);
+		if (ret == CONFIG_NOTHING_SET)
+			error("cannot overwrite multiple values with a single value\n"
+			"       Use a regexp, --add or --replace-all to change %s.", argv[0]);
+		return ret;
+	}
+	else if (actions == ACTION_SET_ALL) {
+		check_write();
+		check_argc(argc, 2, 3);
+		value = normalize_value(argv[0], argv[1]);
+		return git_config_set_multivar_in_file(given_config_source.file,
+						       argv[0], value, argv[2], 0);
+	}
+	else if (actions == ACTION_ADD) {
+		check_write();
+		check_argc(argc, 2, 2);
+		value = normalize_value(argv[0], argv[1]);
+		return git_config_set_multivar_in_file(given_config_source.file,
+						       argv[0], value,
+						       CONFIG_REGEX_NONE, 0);
+	}
+	else if (actions == ACTION_REPLACE_ALL) {
+		check_write();
+		check_argc(argc, 2, 3);
+		value = normalize_value(argv[0], argv[1]);
+		return git_config_set_multivar_in_file(given_config_source.file,
+						       argv[0], value, argv[2], 1);
+	}
+	else if (actions == ACTION_GET) {
+		check_argc(argc, 1, 2);
+		return get_value(argv[0], argv[1]);
+	}
+	else if (actions == ACTION_GET_ALL) {
+		do_all = 1;
+		check_argc(argc, 1, 2);
+		return get_value(argv[0], argv[1]);
+	}
+	else if (actions == ACTION_GET_REGEXP) {
+		show_keys = 1;
+		use_key_regexp = 1;
+		do_all = 1;
+		check_argc(argc, 1, 2);
+		return get_value(argv[0], argv[1]);
+	}
+	else if (actions == ACTION_GET_URLMATCH) {
+		check_argc(argc, 2, 2);
+		return get_urlmatch(argv[0], argv[1]);
+	}
+	else if (actions == ACTION_UNSET) {
+		check_write();
+		check_argc(argc, 1, 2);
+		if (argc == 2)
+			return git_config_set_multivar_in_file(given_config_source.file,
+							       argv[0], NULL, argv[1], 0);
+		else
+			return git_config_set_in_file(given_config_source.file,
+						      argv[0], NULL);
+	}
+	else if (actions == ACTION_UNSET_ALL) {
+		check_write();
+		check_argc(argc, 1, 2);
+		return git_config_set_multivar_in_file(given_config_source.file,
+						       argv[0], NULL, argv[1], 1);
+	}
+	else if (actions == ACTION_RENAME_SECTION) {
+		int ret;
+		check_write();
+		check_argc(argc, 2, 2);
+		ret = git_config_rename_section_in_file(given_config_source.file,
+							argv[0], argv[1]);
+		if (ret < 0)
+			return ret;
+		if (ret == 0)
+			die("No such section!");
+	}
+	else if (actions == ACTION_REMOVE_SECTION) {
+		int ret;
+		check_write();
+		check_argc(argc, 1, 1);
+		ret = git_config_rename_section_in_file(given_config_source.file,
+							argv[0], NULL);
+		if (ret < 0)
+			return ret;
+		if (ret == 0)
+			die("No such section!");
+	}
+	else if (actions == ACTION_GET_COLOR) {
+		check_argc(argc, 1, 2);
+		get_color(argv[0], argv[1]);
+	}
+	else if (actions == ACTION_GET_COLORBOOL) {
+		check_argc(argc, 1, 2);
+		if (argc == 2)
+			color_stdout_is_tty = git_config_bool("command line", argv[1]);
+		return get_colorbool(argv[0], argc == 2);
+	}
+
+	return 0;
+}