git

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#include "builtin.h"
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#include "config.h"
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#include "attr.h"
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#include "environment.h"
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#include "gettext.h"
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#include "object-name.h"
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#include "quote.h"
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#include "repository.h"
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#include "setup.h"
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#include "parse-options.h"
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#include "write-or-die.h"
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static int all_attrs;
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static int cached_attrs;
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static int stdin_paths;
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static char *source;
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static const char * const check_attr_usage[] = {
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N_("git check-attr [--source <tree-ish>] [-a | --all | <attr>...] [--] <pathname>..."),
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N_("git check-attr --stdin [-z] [--source <tree-ish>] [-a | --all | <attr>...]"),
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NULL
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};
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static int nul_term_line;
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static const struct option check_attr_options[] = {
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	OPT_BOOL('a', "all", &all_attrs, N_("report all attributes set on file")),
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	OPT_BOOL(0,  "cached", &cached_attrs, N_("use .gitattributes only from the index")),
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	OPT_BOOL(0 , "stdin", &stdin_paths, N_("read file names from stdin")),
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	OPT_BOOL('z', NULL, &nul_term_line,
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		 N_("terminate input and output records by a NUL character")),
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	OPT_STRING(0, "source", &source, N_("<tree-ish>"), N_("which tree-ish to check attributes at")),
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	OPT_END()
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};
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static void output_attr(struct attr_check *check, const char *file)
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{
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	int j;
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	int cnt = check->nr;
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	for (j = 0; j < cnt; j++) {
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		const char *value = check->items[j].value;
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		if (ATTR_TRUE(value))
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			value = "set";
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		else if (ATTR_FALSE(value))
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			value = "unset";
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		else if (ATTR_UNSET(value))
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			value = "unspecified";
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		if (nul_term_line) {
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			printf("%s%c" /* path */
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			       "%s%c" /* attrname */
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			       "%s%c" /* attrvalue */,
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			       file, 0,
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			       git_attr_name(check->items[j].attr), 0, value, 0);
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		} else {
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			quote_c_style(file, NULL, stdout, 0);
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			printf(": %s: %s\n",
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			       git_attr_name(check->items[j].attr), value);
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		}
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	}
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}
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static void check_attr(const char *prefix, struct attr_check *check,
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		       int collect_all,
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		       const char *file)
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{
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	char *full_path =
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		prefix_path(prefix, prefix ? strlen(prefix) : 0, file);
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	if (collect_all) {
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		git_all_attrs(the_repository->index, full_path, check);
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	} else {
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		git_check_attr(the_repository->index, full_path, check);
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	}
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	output_attr(check, file);
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	free(full_path);
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}
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static void check_attr_stdin_paths(const char *prefix, struct attr_check *check,
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				   int collect_all)
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{
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	struct strbuf buf = STRBUF_INIT;
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	struct strbuf unquoted = STRBUF_INIT;
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	strbuf_getline_fn getline_fn;
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	getline_fn = nul_term_line ? strbuf_getline_nul : strbuf_getline_lf;
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	while (getline_fn(&buf, stdin) != EOF) {
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		if (!nul_term_line && buf.buf[0] == '"') {
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			strbuf_reset(&unquoted);
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			if (unquote_c_style(&unquoted, buf.buf, NULL))
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				die("line is badly quoted");
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			strbuf_swap(&buf, &unquoted);
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		}
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		check_attr(prefix, check, collect_all, buf.buf);
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		maybe_flush_or_die(stdout, "attribute to stdout");
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	}
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	strbuf_release(&buf);
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	strbuf_release(&unquoted);
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}
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static NORETURN void error_with_usage(const char *msg)
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{
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	error("%s", msg);
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	usage_with_options(check_attr_usage, check_attr_options);
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}
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int cmd_check_attr(int argc, const char **argv, const char *prefix)
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{
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	struct attr_check *check;
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	struct object_id initialized_oid;
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	int cnt, i, doubledash, filei;
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	if (!is_bare_repository())
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		setup_work_tree();
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	git_config(git_default_config, NULL);
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	argc = parse_options(argc, argv, prefix, check_attr_options,
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			     check_attr_usage, PARSE_OPT_KEEP_DASHDASH);
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	prepare_repo_settings(the_repository);
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	the_repository->settings.command_requires_full_index = 0;
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	if (repo_read_index(the_repository) < 0) {
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		die("invalid cache");
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	}
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	if (cached_attrs)
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		git_attr_set_direction(GIT_ATTR_INDEX);
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	doubledash = -1;
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	for (i = 0; doubledash < 0 && i < argc; i++) {
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		if (!strcmp(argv[i], "--"))
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			doubledash = i;
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	}
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	/* Process --all and/or attribute arguments: */
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	if (all_attrs) {
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		if (doubledash >= 1)
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			error_with_usage("Attributes and --all both specified");
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		cnt = 0;
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		filei = doubledash + 1;
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	} else if (doubledash == 0) {
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		error_with_usage("No attribute specified");
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	} else if (doubledash < 0) {
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		if (!argc)
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			error_with_usage("No attribute specified");
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		if (stdin_paths) {
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			/* Treat all arguments as attribute names. */
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			cnt = argc;
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			filei = argc;
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		} else {
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			/* Treat exactly one argument as an attribute name. */
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			cnt = 1;
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			filei = 1;
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		}
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	} else {
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		cnt = doubledash;
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		filei = doubledash + 1;
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	}
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	/* Check file argument(s): */
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	if (stdin_paths) {
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		if (filei < argc)
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			error_with_usage("Can't specify files with --stdin");
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	} else {
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		if (filei >= argc)
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			error_with_usage("No file specified");
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	}
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	check = attr_check_alloc();
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	if (!all_attrs) {
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		for (i = 0; i < cnt; i++) {
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			const struct git_attr *a = git_attr(argv[i]);
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			if (!a)
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				return error("%s: not a valid attribute name",
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					     argv[i]);
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			attr_check_append(check, a);
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		}
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	}
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	if (source) {
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		if (repo_get_oid_tree(the_repository, source, &initialized_oid))
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			die("%s: not a valid tree-ish source", source);
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		set_git_attr_source(source);
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	}
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	if (stdin_paths)
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		check_attr_stdin_paths(prefix, check, all_attrs);
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	else {
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		for (i = filei; i < argc; i++)
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			check_attr(prefix, check, all_attrs, argv[i]);
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		maybe_flush_or_die(stdout, "attribute to stdout");
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	}
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	attr_check_free(check);
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	return 0;
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}
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