C++ OPT_CALLBACK函数代码示例

int main(int argc, const char **argv)
{
	const char *prefix = "prefix/";
	const char *usage[] = {
		"test-parse-options <options>",
		NULL
	};
	struct option options[] = {
		OPT_BOOLEAN('b', "boolean", &boolean, "get a boolean"),
		OPT_BIT('4', "or4", &boolean,
			"bitwise-or boolean with ...0100", 4),
		OPT_NEGBIT(0, "neg-or4", &boolean, "same as --no-or4", 4),
		OPT_GROUP(""),
		OPT_INTEGER('i', "integer", &integer, "get a integer"),
		OPT_INTEGER('j', NULL, &integer, "get a integer, too"),
		OPT_SET_INT(0, "set23", &integer, "set integer to 23", 23),
		OPT_DATE('t', NULL, &timestamp, "get timestamp of <time>"),
		OPT_CALLBACK('L', "length", &integer, "str",
			"get length of <str>", length_callback),
		OPT_FILENAME('F', "file", &file, "set file to <FILE>"),
		OPT_GROUP("String options"),
		OPT_STRING('s', "string", &string, "string", "get a string"),
		OPT_STRING(0, "string2", &string, "str", "get another string"),
		OPT_STRING(0, "st", &string, "st", "get another string (pervert ordering)"),
		OPT_STRING('o', NULL, &string, "str", "get another string"),
		OPT_SET_PTR(0, "default-string", &string,
			"set string to default", (unsigned long)"default"),
		OPT_GROUP("Magic arguments"),
		OPT_ARGUMENT("quux", "means --quux"),
		OPT_NUMBER_CALLBACK(&integer, "set integer to NUM",
			number_callback),
		{ OPTION_BOOLEAN, '+', NULL, &boolean, NULL, "same as -b",
		  PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH },
		OPT_GROUP("Standard options"),
		OPT__ABBREV(&abbrev),
		OPT__VERBOSE(&verbose),
		OPT__DRY_RUN(&dry_run),
		OPT__QUIET(&quiet),
		OPT_END(),
	};
	int i;

	argc = parse_options(argc, argv, prefix, options, usage, 0);

	printf("boolean: %d\n", boolean);
	printf("integer: %u\n", integer);
	printf("timestamp: %lu\n", timestamp);
	printf("string: %s\n", string ? string : "(not set)");
	printf("abbrev: %d\n", abbrev);
	printf("verbose: %d\n", verbose);
	printf("quiet: %s\n", quiet ? "yes" : "no");
	printf("dry run: %s\n", dry_run ? "yes" : "no");
	printf("file: %s\n", file ? file : "(not set)");

	for (i = 0; i < argc; i++)
		printf("arg %02d: %s\n", i, argv[i]);

	return 0;
}

static void parse_args(int argc, const char **argv)
{
	const char * const * usage_str = revert_or_cherry_pick_usage();
	int noop;

#ifdef USE_CPLUSPLUS_FOR_INIT
#pragma cplusplus on
#endif

	struct option options[] = {
		OPT_BOOLEAN('n', "no-commit", &no_commit, "don't automatically commit"),
		OPT_BOOLEAN('e', "edit", &edit, "edit the commit message"),
		{ OPTION_BOOLEAN, 'r', NULL, &noop, NULL, "no-op (backward compatibility)",
		  PARSE_OPT_NOARG | PARSE_OPT_HIDDEN, NULL, 0 },
		OPT_BOOLEAN('s', "signoff", &signoff, "add Signed-off-by:"),
		OPT_INTEGER('m', "mainline", &mainline, "parent number"),
		OPT_RERERE_AUTOUPDATE(&allow_rerere_auto),
		OPT_STRING(0, "strategy", &strategy, "strategy", "merge strategy"),
		OPT_CALLBACK('X', "strategy-option", &xopts, "option",
			"option for merge strategy", option_parse_x),
		OPT_END(),
		OPT_END(),
		OPT_END(),
	};

#ifdef USE_CPLUSPLUS_FOR_INIT
#pragma cplusplus reset
#endif

	if (action == CHERRY_PICK) {
		struct option cp_extra[] = {
			OPT_BOOLEAN('x', NULL, &no_replay, "append commit name"),
			OPT_BOOLEAN(0, "ff", &allow_ff, "allow fast-forward"),
			OPT_END(),
		};
		if (parse_options_concat(options, ARRAY_SIZE(options), cp_extra))
			die(_("program error"));
	}

	commit_argc = parse_options(argc, argv, NULL, options, usage_str,
				    PARSE_OPT_KEEP_ARGV0 |
				    PARSE_OPT_KEEP_UNKNOWN);
	if (commit_argc < 2)
		usage_with_options(usage_str, options);

	commit_argv = argv;
}

static void parse_args(int argc, const char **argv, struct replay_opts *opts)
{
	const char * const * usage_str = revert_or_cherry_pick_usage(opts);
	const char *me = action_name(opts);
	int cmd = 0;
	struct option options[] = {
		OPT_CMDMODE(0, "quit", &cmd, N_("end revert or cherry-pick sequence"), 'q'),
		OPT_CMDMODE(0, "continue", &cmd, N_("resume revert or cherry-pick sequence"), 'c'),
		OPT_CMDMODE(0, "abort", &cmd, N_("cancel revert or cherry-pick sequence"), 'a'),
		OPT_BOOL('n', "no-commit", &opts->no_commit, N_("don't automatically commit")),
		OPT_BOOL('e', "edit", &opts->edit, N_("edit the commit message")),
		OPT_NOOP_NOARG('r', NULL),
		OPT_BOOL('s', "signoff", &opts->signoff, N_("add Signed-off-by:")),
		OPT_INTEGER('m', "mainline", &opts->mainline, N_("parent number")),
		OPT_RERERE_AUTOUPDATE(&opts->allow_rerere_auto),
		OPT_STRING(0, "strategy", &opts->strategy, N_("strategy"), N_("merge strategy")),
		OPT_CALLBACK('X', "strategy-option", &opts, N_("option"),
			N_("option for merge strategy"), option_parse_x),
		OPT_END(),
		OPT_END(),
		OPT_END(),
		OPT_END(),
		OPT_END(),
		OPT_END(),
	};

	if (opts->action == REPLAY_PICK) {
		struct option cp_extra[] = {
			OPT_BOOL('x', NULL, &opts->record_origin, N_("append commit name")),
			OPT_BOOL(0, "ff", &opts->allow_ff, N_("allow fast-forward")),
			OPT_BOOL(0, "allow-empty", &opts->allow_empty, N_("preserve initially empty commits")),
			OPT_BOOL(0, "allow-empty-message", &opts->allow_empty_message, N_("allow commits with empty messages")),
			OPT_BOOL(0, "keep-redundant-commits", &opts->keep_redundant_commits, N_("keep redundant, empty commits")),
			OPT_END(),
		};
		if (parse_options_concat(options, ARRAY_SIZE(options), cp_extra))
			die(_("program error"));
	}

	argc = parse_options(argc, argv, NULL, options, usage_str,
			PARSE_OPT_KEEP_ARGV0 |
			PARSE_OPT_KEEP_UNKNOWN);

	/* implies allow_empty */
	if (opts->keep_redundant_commits)
		opts->allow_empty = 1;

	/* Set the subcommand */
	if (cmd == 'q')
		opts->subcommand = REPLAY_REMOVE_STATE;
	else if (cmd == 'c')
		opts->subcommand = REPLAY_CONTINUE;
	else if (cmd == 'a')
		opts->subcommand = REPLAY_ROLLBACK;
	else
		opts->subcommand = REPLAY_NONE;

	/* Check for incompatible command line arguments */
	if (opts->subcommand != REPLAY_NONE) {
		char *this_operation;
		if (opts->subcommand == REPLAY_REMOVE_STATE)
			this_operation = "--quit";
		else if (opts->subcommand == REPLAY_CONTINUE)
			this_operation = "--continue";
		else {
			assert(opts->subcommand == REPLAY_ROLLBACK);
			this_operation = "--abort";
		}

		verify_opt_compatible(me, this_operation,
				"--no-commit", opts->no_commit,
				"--signoff", opts->signoff,
				"--mainline", opts->mainline,
				"--strategy", opts->strategy ? 1 : 0,
				"--strategy-option", opts->xopts ? 1 : 0,
				"-x", opts->record_origin,
				"--ff", opts->allow_ff,
				NULL);
	}

	if (opts->allow_ff)
		verify_opt_compatible(me, "--ff",
				"--signoff", opts->signoff,
				"--no-commit", opts->no_commit,
				"-x", opts->record_origin,
				"--edit", opts->edit,
				NULL);

	if (opts->subcommand != REPLAY_NONE) {
		opts->revs = NULL;
	} else {
		struct setup_revision_opt s_r_opt;
		opts->revs = xmalloc(sizeof(*opts->revs));
		init_revisions(opts->revs, NULL);
		opts->revs->no_walk = REVISION_WALK_NO_WALK_UNSORTED;
		if (argc < 2)
			usage_with_options(usage_str, options);
		if (!strcmp(argv[1], "-"))
			argv[1] = "@{-1}";
		memset(&s_r_opt, 0, sizeof(s_r_opt));
//.........这里部分代码省略.........

	else {
		strbuf_addstr(buf, arg);
		strbuf_addstr(buf, "\n\n");
	}
	return 0;
}

static struct option builtin_commit_options[] = {
	OPT__QUIET(&quiet, "suppress summary after successful commit"),
	OPT__VERBOSE(&verbose, "show diff in commit message template"),

	OPT_GROUP("Commit message options"),
	OPT_FILENAME('F', "file", &logfile, "read message from file"),
	OPT_STRING(0, "author", &force_author, "author", "override author for commit"),
	OPT_STRING(0, "date", &force_date, "date", "override date for commit"),
	OPT_CALLBACK('m', "message", &message, "message", "commit message", opt_parse_m),
	OPT_STRING('c', "reedit-message", &edit_message, "commit", "reuse and edit message from specified commit"),
	OPT_STRING('C', "reuse-message", &use_message, "commit", "reuse message from specified commit"),
	OPT_STRING(0, "fixup", &fixup_message, "commit", "use autosquash formatted message to fixup specified commit"),
	OPT_STRING(0, "squash", &squash_message, "commit", "use autosquash formatted message to squash specified commit"),
	OPT_BOOLEAN(0, "reset-author", &renew_authorship, "the commit is authored by me now (used with -C-c/--amend)"),
	OPT_BOOLEAN('s', "signoff", &signoff, "add Signed-off-by:"),
	OPT_FILENAME('t', "template", &template_file, "use specified template file"),
	OPT_BOOLEAN('e', "edit", &edit_flag, "force edit of commit"),
	OPT_STRING(0, "cleanup", &cleanup_arg, "default", "how to strip spaces and #comments from message"),
	OPT_BOOLEAN(0, "status", &include_status, "include status in commit message template"),
	/* end commit message options */

	OPT_GROUP("Commit contents options"),
	OPT_BOOLEAN('a', "all", &all, "commit all changed files"),
	OPT_BOOLEAN('i', "include", &also, "add specified files to index for commit"),

int cmd_grep(int argc, const char **argv, const char *prefix)
{
	int hit = 0;
	int cached = 0, untracked = 0, opt_exclude = -1;
	int seen_dashdash = 0;
	int external_grep_allowed__ignored;
	const char *show_in_pager = NULL, *default_pager = "dummy";
	struct grep_opt opt;
	struct object_array list = OBJECT_ARRAY_INIT;
	struct pathspec pathspec;
	struct string_list path_list = STRING_LIST_INIT_NODUP;
	int i;
	int dummy;
	int use_index = 1;
	int pattern_type_arg = GREP_PATTERN_TYPE_UNSPECIFIED;
	int allow_revs;

	struct option options[] = {
		OPT_BOOL(0, "cached", &cached,
			N_("search in index instead of in the work tree")),
		OPT_NEGBIT(0, "no-index", &use_index,
			 N_("find in contents not managed by git"), 1),
		OPT_BOOL(0, "untracked", &untracked,
			N_("search in both tracked and untracked files")),
		OPT_SET_INT(0, "exclude-standard", &opt_exclude,
			    N_("ignore files specified via '.gitignore'"), 1),
		OPT_BOOL(0, "recurse-submodules", &recurse_submodules,
			 N_("recursively search in each submodule")),
		OPT_GROUP(""),
		OPT_BOOL('v', "invert-match", &opt.invert,
			N_("show non-matching lines")),
		OPT_BOOL('i', "ignore-case", &opt.ignore_case,
			N_("case insensitive matching")),
		OPT_BOOL('w', "word-regexp", &opt.word_regexp,
			N_("match patterns only at word boundaries")),
		OPT_SET_INT('a', "text", &opt.binary,
			N_("process binary files as text"), GREP_BINARY_TEXT),
		OPT_SET_INT('I', NULL, &opt.binary,
			N_("don't match patterns in binary files"),
			GREP_BINARY_NOMATCH),
		OPT_BOOL(0, "textconv", &opt.allow_textconv,
			 N_("process binary files with textconv filters")),
		{ OPTION_INTEGER, 0, "max-depth", &opt.max_depth, N_("depth"),
			N_("descend at most <depth> levels"), PARSE_OPT_NONEG,
			NULL, 1 },
		OPT_GROUP(""),
		OPT_SET_INT('E', "extended-regexp", &pattern_type_arg,
			    N_("use extended POSIX regular expressions"),
			    GREP_PATTERN_TYPE_ERE),
		OPT_SET_INT('G', "basic-regexp", &pattern_type_arg,
			    N_("use basic POSIX regular expressions (default)"),
			    GREP_PATTERN_TYPE_BRE),
		OPT_SET_INT('F', "fixed-strings", &pattern_type_arg,
			    N_("interpret patterns as fixed strings"),
			    GREP_PATTERN_TYPE_FIXED),
		OPT_SET_INT('P', "perl-regexp", &pattern_type_arg,
			    N_("use Perl-compatible regular expressions"),
			    GREP_PATTERN_TYPE_PCRE),
		OPT_GROUP(""),
		OPT_BOOL('n', "line-number", &opt.linenum, N_("show line numbers")),
		OPT_NEGBIT('h', NULL, &opt.pathname, N_("don't show filenames"), 1),
		OPT_BIT('H', NULL, &opt.pathname, N_("show filenames"), 1),
		OPT_NEGBIT(0, "full-name", &opt.relative,
			N_("show filenames relative to top directory"), 1),
		OPT_BOOL('l', "files-with-matches", &opt.name_only,
			N_("show only filenames instead of matching lines")),
		OPT_BOOL(0, "name-only", &opt.name_only,
			N_("synonym for --files-with-matches")),
		OPT_BOOL('L', "files-without-match",
			&opt.unmatch_name_only,
			N_("show only the names of files without match")),
		OPT_BOOL('z', "null", &opt.null_following_name,
			N_("print NUL after filenames")),
		OPT_BOOL('c', "count", &opt.count,
			N_("show the number of matches instead of matching lines")),
		OPT__COLOR(&opt.color, N_("highlight matches")),
		OPT_BOOL(0, "break", &opt.file_break,
			N_("print empty line between matches from different files")),
		OPT_BOOL(0, "heading", &opt.heading,
			N_("show filename only once above matches from same file")),
		OPT_GROUP(""),
		OPT_CALLBACK('C', "context", &opt, N_("n"),
			N_("show <n> context lines before and after matches"),
			context_callback),
		OPT_INTEGER('B', "before-context", &opt.pre_context,
			N_("show <n> context lines before matches")),
		OPT_INTEGER('A', "after-context", &opt.post_context,
			N_("show <n> context lines after matches")),
		OPT_INTEGER(0, "threads", &num_threads,
			N_("use <n> worker threads")),
		OPT_NUMBER_CALLBACK(&opt, N_("shortcut for -C NUM"),
			context_callback),
		OPT_BOOL('p', "show-function", &opt.funcname,
			N_("show a line with the function name before matches")),
		OPT_BOOL('W', "function-context", &opt.funcbody,
			N_("show the surrounding function")),
		OPT_GROUP(""),
		OPT_CALLBACK('f', NULL, &opt, N_("file"),
			N_("read patterns from file"), file_callback),
		{ OPTION_CALLBACK, 'e', NULL, &opt, N_("pattern"),
//.........这里部分代码省略.........

int main(int argc, char **argv)
{
    const char *prefix = "prefix/";
    const char *usage[] = {
        "test-parse-options <options>",
        NULL
    };
    struct string_list expect = STRING_LIST_INIT_NODUP;
    struct option options[] = {
        OPT_BOOL(0, "yes", &boolean, "get a boolean"),
        OPT_BOOL('D', "no-doubt", &boolean, "begins with 'no-'"),
        {   OPTION_SET_INT, 'B', "no-fear", &boolean, NULL,
            "be brave", PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, 1
        },
        OPT_COUNTUP('b', "boolean", &boolean, "increment by one"),
        OPT_BIT('4', "or4", &boolean,
        "bitwise-or boolean with ...0100", 4),
        OPT_NEGBIT(0, "neg-or4", &boolean, "same as --no-or4", 4),
        OPT_GROUP(""),
        OPT_INTEGER('i', "integer", &integer, "get a integer"),
        OPT_INTEGER('j', NULL, &integer, "get a integer, too"),
        OPT_MAGNITUDE('m', "magnitude", &magnitude, "get a magnitude"),
        OPT_SET_INT(0, "set23", &integer, "set integer to 23", 23),
        OPT_DATE('t', NULL, &timestamp, "get timestamp of <time>"),
        OPT_CALLBACK('L', "length", &integer, "str",
        "get length of <str>", length_callback),
        OPT_FILENAME('F', "file", &file, "set file to <file>"),
        OPT_GROUP("String options"),
        OPT_STRING('s', "string", &string, "string", "get a string"),
        OPT_STRING(0, "string2", &string, "str", "get another string"),
        OPT_STRING(0, "st", &string, "st", "get another string (pervert ordering)"),
        OPT_STRING('o', NULL, &string, "str", "get another string"),
        OPT_NOOP_NOARG(0, "obsolete"),
        OPT_STRING_LIST(0, "list", &list, "str", "add str to list"),
        OPT_GROUP("Magic arguments"),
        OPT_ARGUMENT("quux", "means --quux"),
        OPT_NUMBER_CALLBACK(&integer, "set integer to NUM",
        number_callback),
        {   OPTION_COUNTUP, '+', NULL, &boolean, NULL, "same as -b",
            PARSE_OPT_NOARG | PARSE_OPT_NONEG | PARSE_OPT_NODASH
        },
        {   OPTION_COUNTUP, 0, "ambiguous", &ambiguous, NULL,
            "positive ambiguity", PARSE_OPT_NOARG | PARSE_OPT_NONEG
        },
        {   OPTION_COUNTUP, 0, "no-ambiguous", &ambiguous, NULL,
            "negative ambiguity", PARSE_OPT_NOARG | PARSE_OPT_NONEG
        },
        OPT_GROUP("Standard options"),
        OPT__ABBREV(&abbrev),
        OPT__VERBOSE(&verbose, "be verbose"),
        OPT__DRY_RUN(&dry_run, "dry run"),
        OPT__QUIET(&quiet, "be quiet"),
        OPT_CALLBACK(0, "expect", &expect, "string",
        "expected output in the variable dump",
        collect_expect),
        OPT_END(),
    };
    int i;
    int ret = 0;

    argc = parse_options(argc, (const char **)argv, prefix, options, usage, 0);

    if (length_cb.called) {
        const char *arg = length_cb.arg;
        int unset = length_cb.unset;
        show(&expect, &ret, "Callback: \"%s\", %d",
             (arg ? arg : "not set"), unset);
    }
    show(&expect, &ret, "boolean: %d", boolean);
    show(&expect, &ret, "integer: %d", integer);
    show(&expect, &ret, "magnitude: %lu", magnitude);
    show(&expect, &ret, "timestamp: %lu", timestamp);
    show(&expect, &ret, "string: %s", string ? string : "(not set)");
    show(&expect, &ret, "abbrev: %d", abbrev);
    show(&expect, &ret, "verbose: %d", verbose);
    show(&expect, &ret, "quiet: %d", quiet);
    show(&expect, &ret, "dry run: %s", dry_run ? "yes" : "no");
    show(&expect, &ret, "file: %s", file ? file : "(not set)");

    for (i = 0; i < list.nr; i++)
        show(&expect, &ret, "list: %s", list.items[i].string);

    for (i = 0; i < argc; i++)
        show(&expect, &ret, "arg %02d: %s", i, argv[i]);

    return ret;
}

int cmd_commit(int argc, const char **argv, const char *prefix)
{
	static struct wt_status s;
	static struct option builtin_commit_options[] = {
		OPT__QUIET(&quiet, N_("suppress summary after successful commit")),
		OPT__VERBOSE(&verbose, N_("show diff in commit message template")),

		OPT_GROUP(N_("Commit message options")),
		OPT_FILENAME('F', "file", &logfile, N_("read message from file")),
		OPT_STRING(0, "author", &force_author, N_("author"), N_("override author for commit")),
		OPT_STRING(0, "date", &force_date, N_("date"), N_("override date for commit")),
		OPT_CALLBACK('m', "message", &message, N_("message"), N_("commit message"), opt_parse_m),
		OPT_STRING('c', "reedit-message", &edit_message, N_("commit"), N_("reuse and edit message from specified commit")),
		OPT_STRING('C', "reuse-message", &use_message, N_("commit"), N_("reuse message from specified commit")),
		OPT_STRING(0, "fixup", &fixup_message, N_("commit"), N_("use autosquash formatted message to fixup specified commit")),
		OPT_STRING(0, "squash", &squash_message, N_("commit"), N_("use autosquash formatted message to squash specified commit")),
		OPT_BOOL(0, "reset-author", &renew_authorship, N_("the commit is authored by me now (used with -C/-c/--amend)")),
		OPT_BOOL('s', "signoff", &signoff, N_("add Signed-off-by:")),
		OPT_FILENAME('t', "template", &template_file, N_("use specified template file")),
		OPT_BOOL('e', "edit", &edit_flag, N_("force edit of commit")),
		OPT_STRING(0, "cleanup", &cleanup_arg, N_("default"), N_("how to strip spaces and #comments from message")),
		OPT_BOOL(0, "status", &include_status, N_("include status in commit message template")),
		{ OPTION_STRING, 'S', "gpg-sign", &sign_commit, N_("key id"),
		  N_("GPG sign commit"), PARSE_OPT_OPTARG, NULL, (intptr_t) "" },
		/* end commit message options */

		OPT_GROUP(N_("Commit contents options")),
		OPT_BOOL('a', "all", &all, N_("commit all changed files")),
		OPT_BOOL('i', "include", &also, N_("add specified files to index for commit")),
		OPT_BOOL(0, "interactive", &interactive, N_("interactively add files")),
		OPT_BOOL('p', "patch", &patch_interactive, N_("interactively add changes")),
		OPT_BOOL('o', "only", &only, N_("commit only specified files")),
		OPT_BOOL('n', "no-verify", &no_verify, N_("bypass pre-commit hook")),
		OPT_BOOL(0, "dry-run", &dry_run, N_("show what would be committed")),
		OPT_SET_INT(0, "short", &status_format, N_("show status concisely"),
			    STATUS_FORMAT_SHORT),
		OPT_BOOL(0, "branch", &s.show_branch, N_("show branch information")),
		OPT_SET_INT(0, "porcelain", &status_format,
			    N_("machine-readable output"), STATUS_FORMAT_PORCELAIN),
		OPT_SET_INT(0, "long", &status_format,
			    N_("show status in long format (default)"),
			    STATUS_FORMAT_LONG),
		OPT_BOOL('z', "null", &s.null_termination,
			 N_("terminate entries with NUL")),
		OPT_BOOL(0, "amend", &amend, N_("amend previous commit")),
		OPT_BOOL(0, "no-post-rewrite", &no_post_rewrite, N_("bypass post-rewrite hook")),
		{ OPTION_STRING, 'u', "untracked-files", &untracked_files_arg, N_("mode"), N_("show untracked files, optional modes: all, normal, no. (Default: all)"), PARSE_OPT_OPTARG, NULL, (intptr_t)"all" },
		/* end commit contents options */

		OPT_HIDDEN_BOOL(0, "allow-empty", &allow_empty,
				N_("ok to record an empty change")),
		OPT_HIDDEN_BOOL(0, "allow-empty-message", &allow_empty_message,
				N_("ok to record a change with an empty message")),

		OPT_END()
	};

	struct strbuf sb = STRBUF_INIT;
	struct strbuf author_ident = STRBUF_INIT;
	const char *index_file, *reflog_msg;
	char *nl;
	unsigned char sha1[20];
	struct ref_lock *ref_lock;
	struct commit_list *parents = NULL, **pptr = &parents;
	struct stat statbuf;
	struct commit *current_head = NULL;
	struct commit_extra_header *extra = NULL;

	if (argc == 2 && !strcmp(argv[1], "-h"))
		usage_with_options(builtin_commit_usage, builtin_commit_options);

	status_init_config(&s, git_commit_config);
	status_format = STATUS_FORMAT_NONE; /* Ignore status.short */
	s.colopts = 0;

	if (get_sha1("HEAD", sha1))
		current_head = NULL;
	else {
		current_head = lookup_commit_or_die(sha1, "HEAD");
		if (parse_commit(current_head))
			die(_("could not parse HEAD commit"));
	}
	argc = parse_and_validate_options(argc, argv, builtin_commit_options,
					  builtin_commit_usage,
					  prefix, current_head, &s);
	if (dry_run)
		return dry_run_commit(argc, argv, prefix, current_head, &s);
	index_file = prepare_index(argc, argv, prefix, current_head, 0);

	/* Set up everything for writing the commit object.  This includes
	   running hooks, writing the trees, and interacting with the user.  */
	if (!prepare_to_commit(index_file, prefix,
			       current_head, &s, &author_ident)) {
		rollback_index_files();
		return 1;
	}

	/* Determine parents */
	reflog_msg = getenv("GIT_REFLOG_ACTION");
	if (!current_head) {
//.........这里部分代码省略.........

int cmd_ls_remote(int argc, const char **argv, const char *prefix)
{
	const char *dest = NULL;
	unsigned flags = 0;
	int get_url = 0;
	int quiet = 0;
	int status = 0;
	int show_symref_target = 0;
	const char *uploadpack = NULL;
	const char **pattern = NULL;
	struct argv_array ref_prefixes = ARGV_ARRAY_INIT;
	int i;

	struct remote *remote;
	struct transport *transport;
	const struct ref *ref;
	struct ref_array ref_array;
	static struct ref_sorting *sorting = NULL, **sorting_tail = &sorting;

	struct option options[] = {
		OPT__QUIET(&quiet, N_("do not print remote URL")),
		OPT_STRING(0, "upload-pack", &uploadpack, N_("exec"),
			   N_("path of git-upload-pack on the remote host")),
		{ OPTION_STRING, 0, "exec", &uploadpack, N_("exec"),
			   N_("path of git-upload-pack on the remote host"),
			   PARSE_OPT_HIDDEN },
		OPT_BIT('t', "tags", &flags, N_("limit to tags"), REF_TAGS),
		OPT_BIT('h', "heads", &flags, N_("limit to heads"), REF_HEADS),
		OPT_BIT(0, "refs", &flags, N_("do not show peeled tags"), REF_NORMAL),
		OPT_BOOL(0, "get-url", &get_url,
			 N_("take url.<base>.insteadOf into account")),
		OPT_CALLBACK(0 , "sort", sorting_tail, N_("key"),
			     N_("field name to sort on"), &parse_opt_ref_sorting),
		OPT_SET_INT_F(0, "exit-code", &status,
			      N_("exit with exit code 2 if no matching refs are found"),
			      2, PARSE_OPT_NOCOMPLETE),
		OPT_BOOL(0, "symref", &show_symref_target,
			 N_("show underlying ref in addition to the object pointed by it")),
		OPT_END()
	};

	memset(&ref_array, 0, sizeof(ref_array));

	argc = parse_options(argc, argv, prefix, options, ls_remote_usage,
			     PARSE_OPT_STOP_AT_NON_OPTION);
	dest = argv[0];

	if (argc > 1) {
		int i;
		pattern = xcalloc(argc, sizeof(const char *));
		for (i = 1; i < argc; i++) {
			const char *glob;
			pattern[i - 1] = xstrfmt("*/%s", argv[i]);

			glob = strchr(argv[i], '*');
			if (glob)
				argv_array_pushf(&ref_prefixes, "%.*s",
						 (int)(glob - argv[i]), argv[i]);
			else
				expand_ref_prefix(&ref_prefixes, argv[i]);
		}
	}

	remote = remote_get(dest);
	if (!remote) {
		if (dest)
			die("bad repository '%s'", dest);
		die("No remote configured to list refs from.");
	}
	if (!remote->url_nr)
		die("remote %s has no configured URL", dest);

	if (get_url) {
		printf("%s\n", *remote->url);
		UNLEAK(sorting);
		return 0;
	}

	transport = transport_get(remote, NULL);
	if (uploadpack != NULL)
		transport_set_option(transport, TRANS_OPT_UPLOADPACK, uploadpack);

	ref = transport_get_remote_refs(transport, &ref_prefixes);
	if (transport_disconnect(transport)) {
		UNLEAK(sorting);
		return 1;
	}

	if (!dest && !quiet)
		fprintf(stderr, "From %s\n", *remote->url);
	for ( ; ref; ref = ref->next) {
		struct ref_array_item *item;
		if (!check_ref_type(ref, flags))
			continue;
		if (!tail_match(pattern, ref->name))
			continue;
		item = ref_array_push(&ref_array, ref->name, &ref->old_oid);
		item->symref = xstrdup_or_null(ref->symref);
	}

//.........这里部分代码省略.........

static int run_sequencer(int argc, const char **argv, struct replay_opts *opts)
{
	const char * const * usage_str = revert_or_cherry_pick_usage(opts);
	const char *me = action_name(opts);
	int cmd = 0;
	struct option base_options[] = {
		OPT_CMDMODE(0, "quit", &cmd, N_("end revert or cherry-pick sequence"), 'q'),
		OPT_CMDMODE(0, "continue", &cmd, N_("resume revert or cherry-pick sequence"), 'c'),
		OPT_CMDMODE(0, "abort", &cmd, N_("cancel revert or cherry-pick sequence"), 'a'),
		OPT_BOOL('n', "no-commit", &opts->no_commit, N_("don't automatically commit")),
		OPT_BOOL('e', "edit", &opts->edit, N_("edit the commit message")),
		OPT_NOOP_NOARG('r', NULL),
		OPT_BOOL('s', "signoff", &opts->signoff, N_("add Signed-off-by:")),
		OPT_CALLBACK('m', "mainline", opts, N_("parent-number"),
			     N_("select mainline parent"), option_parse_m),
		OPT_RERERE_AUTOUPDATE(&opts->allow_rerere_auto),
		OPT_STRING(0, "strategy", &opts->strategy, N_("strategy"), N_("merge strategy")),
		OPT_CALLBACK('X', "strategy-option", &opts, N_("option"),
			N_("option for merge strategy"), option_parse_x),
		{ OPTION_STRING, 'S', "gpg-sign", &opts->gpg_sign, N_("key-id"),
		  N_("GPG sign commit"), PARSE_OPT_OPTARG, NULL, (intptr_t) "" },
		OPT_END()
	};
	struct option *options = base_options;

	if (opts->action == REPLAY_PICK) {
		struct option cp_extra[] = {
			OPT_BOOL('x', NULL, &opts->record_origin, N_("append commit name")),
			OPT_BOOL(0, "ff", &opts->allow_ff, N_("allow fast-forward")),
			OPT_BOOL(0, "allow-empty", &opts->allow_empty, N_("preserve initially empty commits")),
			OPT_BOOL(0, "allow-empty-message", &opts->allow_empty_message, N_("allow commits with empty messages")),
			OPT_BOOL(0, "keep-redundant-commits", &opts->keep_redundant_commits, N_("keep redundant, empty commits")),
			OPT_END(),
		};
		options = parse_options_concat(options, cp_extra);
	}

	argc = parse_options(argc, argv, NULL, options, usage_str,
			PARSE_OPT_KEEP_ARGV0 |
			PARSE_OPT_KEEP_UNKNOWN);

	/* implies allow_empty */
	if (opts->keep_redundant_commits)
		opts->allow_empty = 1;

	/* Check for incompatible command line arguments */
	if (cmd) {
		char *this_operation;
		if (cmd == 'q')
			this_operation = "--quit";
		else if (cmd == 'c')
			this_operation = "--continue";
		else {
			assert(cmd == 'a');
			this_operation = "--abort";
		}

		verify_opt_compatible(me, this_operation,
				"--no-commit", opts->no_commit,
				"--signoff", opts->signoff,
				"--mainline", opts->mainline,
				"--strategy", opts->strategy ? 1 : 0,
				"--strategy-option", opts->xopts ? 1 : 0,
				"-x", opts->record_origin,
				"--ff", opts->allow_ff,
				"--rerere-autoupdate", opts->allow_rerere_auto == RERERE_AUTOUPDATE,
				"--no-rerere-autoupdate", opts->allow_rerere_auto == RERERE_NOAUTOUPDATE,
				NULL);
	}

	if (opts->allow_ff)
		verify_opt_compatible(me, "--ff",
				"--signoff", opts->signoff,
				"--no-commit", opts->no_commit,
				"-x", opts->record_origin,
				"--edit", opts->edit,
				NULL);

	if (cmd) {
		opts->revs = NULL;
	} else {
		struct setup_revision_opt s_r_opt;
		opts->revs = xmalloc(sizeof(*opts->revs));
		init_revisions(opts->revs, NULL);
		opts->revs->no_walk = REVISION_WALK_NO_WALK_UNSORTED;
		if (argc < 2)
			usage_with_options(usage_str, options);
		if (!strcmp(argv[1], "-"))
			argv[1] = "@{-1}";
		memset(&s_r_opt, 0, sizeof(s_r_opt));
		s_r_opt.assume_dashdash = 1;
		argc = setup_revisions(argc, argv, opts->revs, &s_r_opt);
	}

	if (argc > 1)
		usage_with_options(usage_str, options);

	/* These option values will be free()d */
	opts->gpg_sign = xstrdup_or_null(opts->gpg_sign);
	opts->strategy = xstrdup_or_null(opts->strategy);
//.........这里部分代码省略.........

	OPT_BOOLEAN(0, "stat", &show_diffstat,
		"show a diffstat at the end of the merge"),
	OPT_BOOLEAN(0, "summary", &show_diffstat, "(synonym to --stat)"),
	{ OPTION_INTEGER, 0, "log", &shortlog_len, "n",
	  "add (at most <n>) entries from shortlog to merge commit message",
	  PARSE_OPT_OPTARG, NULL, DEFAULT_MERGE_LOG_LEN },
	OPT_BOOLEAN(0, "squash", &squash,
		"create a single commit instead of doing a merge"),
	OPT_BOOLEAN(0, "commit", &option_commit,
		"perform a commit if the merge succeeds (default)"),
	OPT_BOOLEAN(0, "ff", &allow_fast_forward,
		"allow fast-forward (default)"),
	OPT_BOOLEAN(0, "ff-only", &fast_forward_only,
		"abort if fast-forward is not possible"),
	OPT_RERERE_AUTOUPDATE(&allow_rerere_auto),
	OPT_CALLBACK('s', "strategy", &use_strategies, "strategy",
		"merge strategy to use", option_parse_strategy),
	OPT_CALLBACK('X', "strategy-option", &xopts, "option=value",
		"option for selected merge strategy", option_parse_x),
	OPT_CALLBACK('m', "message", &merge_msg, "message",
		"message to be used for the merge commit (if any)",
		option_parse_message),
	OPT__VERBOSITY(&verbosity),
	OPT_END()
};

/* Cleans up metadata that is uninteresting after a succeeded merge. */
static void drop_save(void)
{
	unlink(git_path("MERGE_HEAD"));
	unlink(git_path("MERGE_MSG"));
	unlink(git_path("MERGE_MODE"));

		(double)bytes_written / 1024.0 / 1024.0,
		output_name,
		bytes_written / 24);

	return 0;
}

static const char * const record_usage[] = {
	"perf record [<options>] [<command>]",
	"perf record [<options>] -- <command> [<options>]",
	NULL
};

static const struct option options[] = {
	OPT_CALLBACK('e', "event", NULL, "event",
		     "event selector. use 'perf list' to list available events",
		     parse_events),
	OPT_CALLBACK(0, "filter", NULL, "filter",
		     "event filter", parse_filter),
	OPT_INTEGER('p', "pid", &target_pid,
		    "record events on existing pid"),
	OPT_INTEGER('r', "realtime", &realtime_prio,
		    "collect data with this RT SCHED_FIFO priority"),
	OPT_BOOLEAN('R', "raw-samples", &raw_samples,
		    "collect raw sample records from all opened counters"),
	OPT_BOOLEAN('a', "all-cpus", &system_wide,
			    "system-wide collection from all CPUs"),
	OPT_BOOLEAN('A', "append", &append_file,
			    "append to the output file to do incremental profiling"),
	OPT_INTEGER('C', "profile_cpu", &profile_cpu,
			    "CPU to profile on"),

	else {
		strbuf_addstr(buf, arg);
		strbuf_addch(buf, '\n');
		strbuf_addch(buf, '\n');
	}
	return 0;
}

static struct option builtin_commit_options[] = {
	OPT__QUIET(&quiet),
	OPT__VERBOSE(&verbose),
	OPT_GROUP("Commit message options"),

	OPT_STRING('F', "file", &logfile, "FILE", "read log from file"),
	OPT_STRING(0, "author", &force_author, "AUTHOR", "override author for commit"),
	OPT_CALLBACK('m', "message", &message, "MESSAGE", "specify commit message", opt_parse_m),
	OPT_STRING('c', "reedit-message", &edit_message, "COMMIT", "reuse and edit message from specified commit "),
	OPT_STRING('C', "reuse-message", &use_message, "COMMIT", "reuse message from specified commit"),
	OPT_BOOLEAN('s', "signoff", &signoff, "add Signed-off-by:"),
	OPT_STRING('t', "template", &template_file, "FILE", "use specified template file"),
	OPT_BOOLEAN('e', "edit", &edit_flag, "force edit of commit"),

	OPT_GROUP("Commit contents options"),
	OPT_BOOLEAN('a', "all", &all, "commit all changed files"),
	OPT_BOOLEAN('i', "include", &also, "add specified files to index for commit"),
	OPT_BOOLEAN(0, "interactive", &interactive, "interactively add files"),
	OPT_BOOLEAN('o', "only", &only, "commit only specified files"),
	OPT_BOOLEAN('n', "no-verify", &no_verify, "bypass pre-commit hook"),
	OPT_BOOLEAN(0, "amend", &amend, "amend previous commit"),
	OPT_BOOLEAN('u', "untracked-files", &untracked_files, "show all untracked files"),
	OPT_BOOLEAN(0, "allow-empty", &allow_empty, "ok to record an empty change"),

{
	if (p == NULL)
		return PERF_PERIODIC_ERROR;
	fprintf(fd_out, " %llu", p->output.values);
	return 0;
}


static const char * const periodic_usage[] = {
	"perf periodic [<options>]",
	NULL
};

static const struct option options[] = {
	OPT_CALLBACK('e', "event", &evsel_list, "event",
	"event selector. use 'perf list' to list available events",
	 parse_events_option),
	OPT_STRING('m', "math-operations", &operations, "nnnnnn",
	"math operation to perform on values collected asmd in order"),
	OPT_STRING('r', "readpipe", &rfifo_name, "xxbadFiFo",
	"wait for a user input fifo - will be created"),
	OPT_STRING('w', "writepipe", &wfifo_name, "xxbadFifo",
	"write data out on this pipe - pipe is created"),
	OPT_INTEGER('i', "increment", &ncounts,
	"number of times periods to count/iterate (default 0-forever)"),
	OPT_INTEGER('p', "pid", &target_pid,
	"stat events on existing process id"),
	OPT_INTEGER('c', "cpumask", &cpumask,
	"cpumask to enable counters, default all (-1)"),
	OPT_INTEGER('s', "sleep", &ms_sleep,
	"how long to sleep in ms between each sample (default 1000)"),

static void parse_args(int argc, const char **argv, struct replay_opts *opts)
{
	const char * const * usage_str = revert_or_cherry_pick_usage(opts);
	const char *me = action_name(opts);
	int remove_state = 0;
	int contin = 0;
	int rollback = 0;
	struct option options[] = {
		OPT_BOOLEAN(0, "quit", &remove_state, "end revert or cherry-pick sequence"),
		OPT_BOOLEAN(0, "continue", &contin, "resume revert or cherry-pick sequence"),
		OPT_BOOLEAN(0, "abort", &rollback, "cancel revert or cherry-pick sequence"),
		OPT_BOOLEAN('n', "no-commit", &opts->no_commit, "don't automatically commit"),
		OPT_BOOLEAN('e', "edit", &opts->edit, "edit the commit message"),
		OPT_NOOP_NOARG('r', NULL),
		OPT_BOOLEAN('s', "signoff", &opts->signoff, "add Signed-off-by:"),
		OPT_INTEGER('m', "mainline", &opts->mainline, "parent number"),
		OPT_RERERE_AUTOUPDATE(&opts->allow_rerere_auto),
		OPT_STRING(0, "strategy", &opts->strategy, "strategy", "merge strategy"),
		OPT_CALLBACK('X', "strategy-option", &opts, "option",
			"option for merge strategy", option_parse_x),
		OPT_END(),
		OPT_END(),
		OPT_END(),
	};

	if (opts->action == CHERRY_PICK) {
		struct option cp_extra[] = {
			OPT_BOOLEAN('x', NULL, &opts->record_origin, "append commit name"),
			OPT_BOOLEAN(0, "ff", &opts->allow_ff, "allow fast-forward"),
			OPT_END(),
		};
		if (parse_options_concat(options, ARRAY_SIZE(options), cp_extra))
			die(_("program error"));
	}

	argc = parse_options(argc, argv, NULL, options, usage_str,
			PARSE_OPT_KEEP_ARGV0 |
			PARSE_OPT_KEEP_UNKNOWN);

	/* Check for incompatible subcommands */
	verify_opt_mutually_compatible(me,
				"--quit", remove_state,
				"--continue", contin,
				"--abort", rollback,
				NULL);

	/* Set the subcommand */
	if (remove_state)
		opts->subcommand = REPLAY_REMOVE_STATE;
	else if (contin)
		opts->subcommand = REPLAY_CONTINUE;
	else if (rollback)
		opts->subcommand = REPLAY_ROLLBACK;
	else
		opts->subcommand = REPLAY_NONE;

	/* Check for incompatible command line arguments */
	if (opts->subcommand != REPLAY_NONE) {
		char *this_operation;
		if (opts->subcommand == REPLAY_REMOVE_STATE)
			this_operation = "--quit";
		else if (opts->subcommand == REPLAY_CONTINUE)
			this_operation = "--continue";
		else {
			assert(opts->subcommand == REPLAY_ROLLBACK);
			this_operation = "--abort";
		}

		verify_opt_compatible(me, this_operation,
				"--no-commit", opts->no_commit,
				"--signoff", opts->signoff,
				"--mainline", opts->mainline,
				"--strategy", opts->strategy ? 1 : 0,
				"--strategy-option", opts->xopts ? 1 : 0,
				"-x", opts->record_origin,
				"--ff", opts->allow_ff,
				NULL);
	}

	if (opts->allow_ff)
		verify_opt_compatible(me, "--ff",
				"--signoff", opts->signoff,
				"--no-commit", opts->no_commit,
				"-x", opts->record_origin,
				"--edit", opts->edit,
				NULL);

	if (opts->subcommand != REPLAY_NONE) {
		opts->revs = NULL;
	} else {
		opts->revs = xmalloc(sizeof(*opts->revs));
		init_revisions(opts->revs, NULL);
		opts->revs->no_walk = 1;
		if (argc < 2)
			usage_with_options(usage_str, options);
		argc = setup_revisions(argc, argv, opts->revs, NULL);
	}

	if (argc > 1)
		usage_with_options(usage_str, options);
//.........这里部分代码省略.........

static void parse_args(int argc, const char **argv, struct replay_opts *opts)
{
	const char * const * usage_str = revert_or_cherry_pick_usage(opts);
	const char *me = action_name(opts);
	int reset = 0;
	int contin = 0;
	struct option options[] = {
		OPT_BOOLEAN(0, "reset", &reset, "forget the current operation"),
		OPT_BOOLEAN(0, "continue", &contin, "continue the current operation"),
		OPT_BOOLEAN('n', "no-commit", &opts->no_commit, "don't automatically commit"),
		OPT_BOOLEAN('e', "edit", &opts->edit, "edit the commit message"),
		OPT_NOOP_NOARG('r', NULL),
		OPT_BOOLEAN('s', "signoff", &opts->signoff, "add Signed-off-by:"),
		OPT_INTEGER('m', "mainline", &opts->mainline, "parent number"),
		OPT_RERERE_AUTOUPDATE(&opts->allow_rerere_auto),
		OPT_STRING(0, "strategy", &opts->strategy, "strategy", "merge strategy"),
		OPT_CALLBACK('X', "strategy-option", &opts, "option",
			"option for merge strategy", option_parse_x),
		OPT_END(),
		OPT_END(),
		OPT_END(),
	};

	if (opts->action == CHERRY_PICK) {
		struct option cp_extra[] = {
			OPT_BOOLEAN('x', NULL, &opts->record_origin, "append commit name"),
			OPT_BOOLEAN(0, "ff", &opts->allow_ff, "allow fast-forward"),
			OPT_END(),
		};
		if (parse_options_concat(options, ARRAY_SIZE(options), cp_extra))
			die(_("program error"));
	}

	opts->commit_argc = parse_options(argc, argv, NULL, options, usage_str,
					PARSE_OPT_KEEP_ARGV0 |
					PARSE_OPT_KEEP_UNKNOWN);

	/* Check for incompatible subcommands */
	verify_opt_mutually_compatible(me,
				"--reset", reset,
				"--continue", contin,
				NULL);

	/* Set the subcommand */
	if (reset)
		opts->subcommand = REPLAY_RESET;
	else if (contin)
		opts->subcommand = REPLAY_CONTINUE;
	else
		opts->subcommand = REPLAY_NONE;

	/* Check for incompatible command line arguments */
	if (opts->subcommand != REPLAY_NONE) {
		char *this_operation;
		if (opts->subcommand == REPLAY_RESET)
			this_operation = "--reset";
		else
			this_operation = "--continue";

		verify_opt_compatible(me, this_operation,
				"--no-commit", opts->no_commit,
				"--signoff", opts->signoff,
				"--mainline", opts->mainline,
				"--strategy", opts->strategy ? 1 : 0,
				"--strategy-option", opts->xopts ? 1 : 0,
				"-x", opts->record_origin,
				"--ff", opts->allow_ff,
				NULL);
	}

	else if (opts->commit_argc < 2)
		usage_with_options(usage_str, options);

	if (opts->allow_ff)
		verify_opt_compatible(me, "--ff",
				"--signoff", opts->signoff,
				"--no-commit", opts->no_commit,
				"-x", opts->record_origin,
				"--edit", opts->edit,
				NULL);
	opts->commit_argv = argv;
}