options.c

一个很有名的浏览器

				}
			}
			free_options_tree(option->value.tree, recursive);
			mem_free(option->value.tree);
			break;
		default:
			break;
	}

	if (option->box_item)
		done_listbox_item(&option_browser, option->box_item);

	if (option->flags & OPT_ALLOC) {
		mem_free_if(option->name);
		mem_free(option);
	} else if (!option->capt) {
		/* We are probably dealing with a built-in autocreated option
		 * that will be attempted to be deleted when shutting down. */
		/* Clear it so nothing will be done later. */
		memset(option, 0, sizeof(*option));
	}
}

void
mark_option_as_deleted(struct option *option)
{
	if (option->type == OPT_TREE) {
		struct option *unmarked;

		assert(option->value.tree);

		foreach (unmarked, *option->value.tree)
			mark_option_as_deleted(unmarked);
	}

	if (option->box_item) {
		done_listbox_item(&option_browser, option->box_item);
		option->box_item = NULL;
	}

	option->flags |= (OPT_TOUCHED | OPT_DELETED);
}

void
delete_option(struct option *option)
{
	delete_option_do(option, 1);
}

struct option *
copy_option(struct option *template)
{
	struct option *option = mem_calloc(1, sizeof(*option));

	if (!option) return NULL;

	option->name = null_or_stracpy(template->name);
	option->flags = (template->flags | OPT_ALLOC);
	option->type = template->type;
	option->min = template->min;
	option->max = template->max;
	option->capt = template->capt;
	option->desc = template->desc;
	option->change_hook = template->change_hook;

	option->box_item = init_option_listbox_item(option);
	if (option->box_item) {
		if (template->box_item) {
			option->box_item->type = template->box_item->type;
			option->box_item->depth = template->box_item->depth;
		}
	}

	if (option_types[template->type].dup) {
		option_types[template->type].dup(option, template);
	} else {
		option->value = template->value;
	}

	return option;
}

struct list_head *
init_options_tree(void)
{
	struct list_head *ptr = mem_alloc(sizeof(*ptr));

	if (ptr) init_list(*ptr);
	return ptr;
}

/* Some default pre-autocreated options. Doh. */
static inline void
register_autocreated_options(void)
{
	/* TODO: Use table-driven initialization. --jonas */
	get_opt_int("terminal.linux.type") = 2;
	get_opt_int("terminal.linux.colors") = 1;
	get_opt_bool("terminal.linux.m11_hack") = 1;
	get_opt_int("terminal.vt100.type") = 1;
	get_opt_int("terminal.vt110.type") = 1;
	get_opt_int("terminal.xterm.type") = 1;
	get_opt_bool("terminal.xterm.underline") = 1;
	get_opt_int("terminal.xterm-color.type") = 1;
	get_opt_int("terminal.xterm-color.colors") = COLOR_MODE_16;
	get_opt_bool("terminal.xterm-color.underline") = 1;
#ifdef CONFIG_256_COLORS
	get_opt_int("terminal.xterm-256color.type") = 1;
	get_opt_int("terminal.xterm-256color.colors") = COLOR_MODE_256;
	get_opt_bool("terminal.xterm-256color.underline") = 1;
#endif
}

static struct option_info config_options_info[];
extern struct option_info cmdline_options_info[];
static struct change_hook_info change_hooks[];

void
init_options(void)
{
	cmdline_options = add_opt_tree_tree(&options_root, "", "",
					    "cmdline", 0, "");
	register_options(cmdline_options_info, cmdline_options);

	config_options = add_opt_tree_tree(&options_root, "", "",
					 "config", OPT_SORT, "");
	config_options->flags |= OPT_LISTBOX;
	config_options->box_item = &option_browser.root;
	register_options(config_options_info, config_options);

	register_autocreated_options();
	register_change_hooks(change_hooks);
}

static void
free_options_tree(struct list_head *tree, int recursive)
{
	while (!list_empty(*tree))
		delete_option_do(tree->next, recursive);
}

void
done_options(void)
{
	unregister_options(config_options_info, config_options);
	unregister_options(cmdline_options_info, cmdline_options);
	config_options->box_item = NULL;
	free_options_tree(&options_root_tree, 0);
}

void
register_change_hooks(struct change_hook_info *change_hooks)
{
	int i;

	for (i = 0; change_hooks[i].name; i++) {
		struct option *option = get_opt_rec(config_options,
						    change_hooks[i].name);

		assert(option);
		option->change_hook = change_hooks[i].change_hook;
	}
}

void
unmark_options_tree(struct list_head *tree)
{
	struct option *option;

	foreach (option, *tree) {
		option->flags &= ~OPT_WATERMARK;
		if (option->type == OPT_TREE)
			unmark_options_tree(option->value.tree);
	}
}

void
watermark_deleted_options(struct list_head *tree)
{
	struct option *option;

	foreach (option, *tree) {
		if (option->flags & OPT_DELETED)
			option->flags |= OPT_WATERMARK;
		else if (option->type == OPT_TREE)
			watermark_deleted_options(option->value.tree);
	}
}

static int
check_nonempty_tree(struct list_head *options)
{
	struct option *opt;

	foreach (opt, *options) {
		if (opt->type == OPT_TREE) {
			if (check_nonempty_tree(opt->value.tree))
				return 1;
		} else if (!(opt->flags & OPT_WATERMARK)) {
			return 1;
		}
	}

	return 0;
}

void
smart_config_string(struct string *str, int print_comment, int i18n,
		    struct list_head *options, unsigned char *path, int depth,
		    void (*fn)(struct string *, struct option *,
			       unsigned char *, int, int, int, int))
{
	struct option *option;

	foreach (option, *options) {
		int do_print_comment = 1;

		if (option->flags & OPT_HIDDEN ||
		    option->flags & OPT_WATERMARK ||
		    option->type == OPT_ALIAS ||
		    !strcmp(option->name, "_template_"))
			continue;

		/* Is there anything to be printed anyway? */
		if (option->type == OPT_TREE
		    && !check_nonempty_tree(option->value.tree))
			continue;

		/* We won't pop out the description when we're in autocreate
		 * category and not template. It'd be boring flood of
		 * repetitive comments otherwise ;). */

		/* This print_comment parameter is weird. If it is negative, it
		 * means that we shouldn't print comments at all. If it is 1,
		 * we shouldn't print comment UNLESS the option is _template_
		 * or not-an-autocreating-tree (it is set for the first-level
		 * autocreation tree). When it is 2, we can print out comments
		 * normally. */
		/* It is still broken somehow, as it didn't work for terminal.*
		 * (the first autocreated level) by the time I wrote this. Good
		 * summer job for bored mad hackers with spare boolean mental
		 * power. I have better things to think about, personally.
		 * Maybe we should just mark autocreated options somehow ;). */
		if (!print_comment || (print_comment == 1
					&& (strcmp(option->name, "_template_")
					    && (option->flags & OPT_AUTOCREATE
					        && option->type == OPT_TREE))))
			do_print_comment = 0;

		/* Pop out the comment */

		/* For config file, we ignore do_print_comment everywhere
		 * except 1, but sometimes we want to skip the option totally.
		 */
		fn(str, option, path, depth,
		   option->type == OPT_TREE ? print_comment
					    : do_print_comment,
		   0, i18n);

		fn(str, option, path, depth, do_print_comment, 1, i18n);

		/* And the option itself */

		if (option_types[option->type].write) {
			fn(str, option, path, depth,
			   do_print_comment, 2, i18n);

		} else if (option->type == OPT_TREE) {
			struct string newpath;
			int pc = print_comment;

			if (!init_string(&newpath)) continue; /* OK? */

			if (pc == 2 && option->flags & OPT_AUTOCREATE)
				pc = 1;
			else if (pc == 1 && strcmp(option->name, "_template_"))
				pc = 0;

			fn(str, option, path, depth, /*pc*/1, 3, i18n);

			if (path) {
				add_to_string(&newpath, path);
				add_char_to_string(&newpath, '.');
			}
			add_to_string(&newpath, option->name);
			smart_config_string(str, pc, i18n, option->value.tree,
					    newpath.source, depth + 1, fn);
			done_string(&newpath);

			fn(str, option, path, depth, /*pc*/1, 3, i18n);
		}

		/* TODO: We should maybe clear the touched flag only when really
		 * saving the stuff...? --pasky */
		option->flags &= ~OPT_TOUCHED;
	}
}


static int
change_hook_cache(struct session *ses, struct option *current, struct option *changed)
{
	shrink_memory(0);
	return 0;
}

static int
change_hook_connection(struct session *ses, struct option *current, struct option *changed)
{
	register_bottom_half((void (*)(void *)) check_queue, NULL);
	return 0;
}

static int
change_hook_html(struct session *ses, struct option *current, struct option *changed)
{
	draw_formatted(ses, 1);
	load_frames(ses, ses->doc_view);
	process_file_requests(ses);
	print_screen_status(ses);
	return 0;
}

static int
change_hook_insert_mode(struct session *ses, struct option *current, struct option *changed)
{
	update_status();
	return 0;
}

static int
change_hook_active_link(struct session *ses, struct option *current, struct option *changed)
{
	if (!global_doc_opts) return 0;

	global_doc_opts->active_link_fg = get_opt_color("document.browse.links.active_link.colors.text");
	global_doc_opts->active_link_bg = get_opt_color("document.browse.links.active_link.colors.background");
	global_doc_opts->color_active_link = get_opt_bool("document.browse.links.active_link.enable_color");
	global_doc_opts->invert_active_link = get_opt_bool("document.browse.links.active_link.invert");
	global_doc_opts->underline_active_link = get_opt_bool("document.browse.links.active_link.underline");
	global_doc_opts->bold_active_link = get_opt_bool("document.browse.links.active_link.bold");

	return 0;
}

static int
change_hook_terminal(struct session *ses, struct option *current, struct option *changed)
{
	cls_redraw_all_terminals();
	return 0;
}

static int
change_hook_ui(struct session *ses, struct option *current, struct option *changed)
{
	update_status();
	return 0;
}

/* Bit 2 of show means we should always set visibility, otherwise we set it
 * only on templates. */
static void
update_visibility(struct list_head *tree, int show)
{
	struct option *opt;

	foreach (opt, *tree) {
		if (!strcmp(opt->name, "_template_")) {
			if (opt->box_item)
				opt->box_item->visible = (show & 1);

			if (opt->type == OPT_TREE)
				update_visibility(opt->value.tree, show | 2);
		} else {
			if (opt->box_item && (show & 2))
				opt->box_item->visible = (show & 1);

			if (opt->type == OPT_TREE)
				update_visibility(opt->value.tree, show);
		}
	}
}

void
update_options_visibility(void)
{
	update_visibility(config_options->value.tree,
			  get_opt_bool("config.show_template"));
}

static int
change_hook_stemplate(struct session *ses, struct option *current, struct option *changed)
{
	update_visibility(config_options->value.tree, changed->value.number);
	return 0;
}

static int
change_hook_language(struct session *ses, struct option *current, struct option *changed)
{
#ifdef ENABLE_NLS
	set_language(changed->value.number);
#endif
	return 0;
}

static struct change_hook_info change_hooks[] = {
	{ "config.show_template",	change_hook_stemplate },
	{ "connection",			change_hook_connection },
	{ "document.browse",		change_hook_html },
	{ "document.browse.forms.insert_mode",
					change_hook_insert_mode },
	{ "document.browse.links.active_link",
					change_hook_active_link },
	{ "document.cache",		change_hook_cache },
	{ "document.codepage",		change_hook_html },
	{ "document.colors",		change_hook_html },
	{ "document.html",		change_hook_html },
	{ "document.plain",		change_hook_html },
	{ "terminal",			change_hook_terminal },
	{ "ui.language",		change_hook_language },
	{ "ui",				change_hook_ui },
	{ NULL,				NULL },
};

int
commit_option_values(struct option_resolver *resolvers,
		     struct option *root, union option_value *values, int size)
{
	int touched = 0;
	int i;

	assert(resolvers && root && values && size);

	for (i = 0; i < size; i++) {
		unsigned char *name = resolvers[i].name;
		struct option *option = get_opt_rec(root, name);
		int id = resolvers[i].id;

		if (memcmp(&option->value, &values[id], sizeof(union option_value))) {
			option->value = values[id];
			option->flags |= OPT_TOUCHED;
			touched++;
		}
	}

	return touched;
}

void
checkout_option_values(struct option_resolver *resolvers,
		       struct option *root,
		       union option_value *values, int size)
{
	int i;

	for (i = 0; i < size; i++) {
		unsigned char *name = resolvers[i].name;
		struct option *option = get_opt_rec(root, name);
		int id = resolvers[i].id;

		values[id] = option->value;
	}
}

/**********************************************************************
 Options values
**********************************************************************/

#include "config/options.inc"

void
register_options(struct option_info info[], struct option *tree)
{
	int i;

	for (i = 0; info[i].path; i++) {
		struct option *option = &info[i].option;
		unsigned char *string;

		debug_check_option_syntax(option);

		if (option->type != OPT_ALIAS
		    && ((tree->flags & OPT_LISTBOX)
			|| (option->flags & OPT_LISTBOX))) {
			option->box_item = init_option_listbox_item(option);
			if (!option->box_item) {
				delete_option(option);
				continue;
			}
		}

		switch (option->type) {
			case OPT_TREE:
				option->value.tree = init_options_tree();
				if (!option->value.tree) {
					delete_option(option);
					continue;
				}
				break;
			case OPT_STRING:
				string = mem_alloc(MAX_STR_LEN);
				if (!string) {
					delete_option(option);
					continue;
				}
				safe_strncpy(string, option->value.string, MAX_STR_LEN);
				option->value.string = string;
				break;
			case OPT_COLOR:
				string = option->value.string;
				assert(string);
				decode_color(string, strlen(string),
						&option->value.color);
				break;
			case OPT_CODEPAGE:
				string = option->value.string;
				assert(string);
				option->value.number = get_cp_index(string);
				break;
			case OPT_BOOL:
			case OPT_INT:
			case OPT_LONG:
			case OPT_LANGUAGE:
			case OPT_COMMAND:
			case OPT_ALIAS:
				break;
		}

		add_opt_rec(tree, info[i].path, option);
	}
}

void
unregister_options(struct option_info info[], struct option *tree)
{
	int i = 0;

	/* We need to remove the options in inverse order to the order how we
	 * added them. */

	while (info[i].path) i++;

	for (i--; i >= 0; i--)
		delete_option_do(&info[i].option, 0);
}