diff mbox series

[v2] scripts: kconfig: nconf: Add search jump feature

Message ID 20230725144652.1092016-1-Mr.Bossman075@gmail.com (mailing list archive)
State Superseded
Headers show
Series [v2] scripts: kconfig: nconf: Add search jump feature | expand

Commit Message

Jesse Taube July 25, 2023, 2:46 p.m. UTC
Menuconfig has a feature where you can "press the key in the (#) prefix
to jump directly to that location. You will be returned to the current
search results after exiting this new menu."

This commit adds this feature to nconfig, with almost identical code.

Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
---
v1->v2:
 Add selected_conf to go to menu and select a specific option.
 Use get_line insead of creating new function.
 Use Masahiro Yamada's new jump search implementation.
---
 scripts/kconfig/nconf.c     | 111 ++++++++++++++++++++++++++++++++----
 scripts/kconfig/nconf.gui.c |  27 +++++++--
 scripts/kconfig/nconf.h     |   4 ++
 3 files changed, 127 insertions(+), 15 deletions(-)

Comments

Masahiro Yamada July 29, 2023, 9 a.m. UTC | #1
On Tue, Jul 25, 2023 at 11:46 PM Jesse Taube <mr.bossman075@gmail.com> wrote:
>
> Menuconfig has a feature where you can "press the key in the (#) prefix
> to jump directly to that location. You will be returned to the current
> search results after exiting this new menu."
>
> This commit adds this feature to nconfig, with almost identical code.
>
> Signed-off-by: Jesse Taube <Mr.Bossman075@gmail.com>
> ---
> v1->v2:
>  Add selected_conf to go to menu and select a specific option.
>  Use get_line insead of creating new function.
>  Use Masahiro Yamada's new jump search implementation.
> ---


Looks almost good to me.
Just a few nits.


>
>  static void search_conf(void)
>  {
> @@ -693,6 +750,7 @@ static void search_conf(void)
>         struct gstr title;
>         char *dialog_input;
>         int dres;
> +       bool again = false;


I think the initializer '= false' is unneeded.




> +
> +/* layman's scrollable window... */
> +int show_scroll_win_ext(WINDOW *main_window, const char *title, char *text,
> +                       extra_key_cb_fn extra_key_cb, void *data)
>  {
>         int res;
>         int total_lines = get_line_no(text);
>         int x, y, lines, columns;
>         int start_x = 0, start_y = 0;
>         int text_lines = 0, text_cols = 0;
> +       int start, end;


Maybe these should be size_t for consistency
with the prototype of handle_search_keys().
(and that is what you pointed out before)
diff mbox series

Patch

diff --git a/scripts/kconfig/nconf.c b/scripts/kconfig/nconf.c
index 3ba8b1af390f..9c5795769aed 100644
--- a/scripts/kconfig/nconf.c
+++ b/scripts/kconfig/nconf.c
@@ -220,7 +220,7 @@  search_help[] =
 "Location:\n"
 "  -> Bus options (PCI, PCMCIA, EISA, ISA)\n"
 "    -> PCI support (PCI [ = y])\n"
-"      -> PCI access mode (<choice> [ = y])\n"
+"(1)   -> PCI access mode (<choice> [ = y])\n"
 "Selects: LIBCRC32\n"
 "Selected by: BAR\n"
 "-----------------------------------------------------------------\n"
@@ -231,9 +231,13 @@  search_help[] =
 "o  The 'Depends on:' line lists symbols that need to be defined for\n"
 "   this symbol to be visible and selectable in the menu.\n"
 "o  The 'Location:' lines tell, where in the menu structure this symbol\n"
-"   is located.  A location followed by a [ = y] indicates that this is\n"
-"   a selectable menu item, and the current value is displayed inside\n"
-"   brackets.\n"
+"   is located.\n"
+"     A location followed by a [ = y] indicates that this is\n"
+"     a selectable menu item, and the current value is displayed inside\n"
+"     brackets.\n"
+"     Press the key in the (#) prefix to jump directly to that\n"
+"     location. You will be returned to the current search results\n"
+"     after exiting this new menu.\n"
 "o  The 'Selects:' line tells, what symbol will be automatically selected\n"
 "   if this symbol is selected (y or m).\n"
 "o  The 'Selected by' line tells what symbol has selected this symbol.\n"
@@ -275,7 +279,9 @@  static const char *current_instructions = menu_instructions;
 
 static char *dialog_input_result;
 static int dialog_input_result_len;
+static int jump_key_char;
 
+static void selected_conf(struct menu *menu, struct menu *active_menu);
 static void conf(struct menu *menu);
 static void conf_choice(struct menu *menu);
 static void conf_string(struct menu *menu);
@@ -685,6 +691,57 @@  static int do_exit(void)
 	return 0;
 }
 
+struct search_data {
+	struct list_head *head;
+	struct menu *target;
+};
+
+static int next_jump_key(int key)
+{
+	if (key < '1' || key > '9')
+		return '1';
+
+	key++;
+
+	if (key > '9')
+		key = '1';
+
+	return key;
+}
+
+static int handle_search_keys(int key, size_t start, size_t end, void *_data)
+{
+	struct search_data *data = _data;
+	struct jump_key *pos;
+	int index = 0;
+
+	if (key < '1' || key > '9')
+		return 0;
+
+	list_for_each_entry(pos, data->head, entries) {
+		index = next_jump_key(index);
+
+		if (pos->offset < start)
+			continue;
+
+		if (pos->offset >= end)
+			break;
+
+		if (key == index) {
+			data->target = pos->target;
+			return 1;
+		}
+	}
+
+	return 0;
+}
+
+int get_jump_key_char(void)
+{
+	jump_key_char = next_jump_key(jump_key_char);
+
+	return jump_key_char;
+}
 
 static void search_conf(void)
 {
@@ -693,6 +750,7 @@  static void search_conf(void)
 	struct gstr title;
 	char *dialog_input;
 	int dres;
+	bool again = false;
 
 	title = str_new();
 	str_printf( &title, "Enter (sub)string or regexp to search for "
@@ -721,11 +779,27 @@  static void search_conf(void)
 		dialog_input += strlen(CONFIG_);
 
 	sym_arr = sym_re_search(dialog_input);
-	res = get_relations_str(sym_arr, NULL);
+
+	do {
+		LIST_HEAD(head);
+		struct search_data data = {
+			.head = &head,
+			.target = NULL,
+		};
+		jump_key_char = 0;
+		res = get_relations_str(sym_arr, &head);
+		dres = show_scroll_win_ext(main_window,
+				"Search Results", str_get(&res),
+				handle_search_keys, &data);
+		again = false;
+		if (dres >= '1' && dres <= '9') {
+			assert(data.target != NULL);
+			selected_conf(data.target->parent, data.target);
+			again = true;
+		}
+		str_free(&res);
+	} while (again);
 	free(sym_arr);
-	show_scroll_win(main_window,
-			"Search Results", str_get(&res));
-	str_free(&res);
 	str_free(&title);
 }
 
@@ -1063,9 +1137,14 @@  static int do_match(int key, struct match_state *state, int *ans)
 
 static void conf(struct menu *menu)
 {
-	struct menu *submenu = NULL;
+	selected_conf(menu, NULL);
+}
+
+static void selected_conf(struct menu *menu, struct menu *active_menu)
+{
+	struct menu *submenu = NULL, *child;
 	struct symbol *sym;
-	int res;
+	int i, res;
 	int current_index = 0;
 	int last_top_row = 0;
 	struct match_state match_state = {
@@ -1074,6 +1153,18 @@  static void conf(struct menu *menu)
 		.pattern = "",
 	};
 
+	if (active_menu != NULL) {
+		for (i = 0, child = menu->list; child; child = child->next) {
+			if (!show_all_items && !menu_is_visible(child))
+				continue;
+			if (active_menu == child) {
+				current_index = i;
+				break;
+			}
+			i++;
+		}
+	}
+
 	while (!global_exit) {
 		reset_menu();
 		current_menu = menu;
diff --git a/scripts/kconfig/nconf.gui.c b/scripts/kconfig/nconf.gui.c
index 9aedf40f1dc0..dcd28cbf6bca 100644
--- a/scripts/kconfig/nconf.gui.c
+++ b/scripts/kconfig/nconf.gui.c
@@ -497,16 +497,23 @@  void refresh_all_windows(WINDOW *main_window)
 	refresh();
 }
 
-/* layman's scrollable window... */
 void show_scroll_win(WINDOW *main_window,
 		const char *title,
 		const char *text)
+{
+	(void)show_scroll_win_ext(main_window, title, (char *)text, NULL, NULL);
+}
+
+/* layman's scrollable window... */
+int show_scroll_win_ext(WINDOW *main_window, const char *title, char *text,
+			extra_key_cb_fn extra_key_cb, void *data)
 {
 	int res;
 	int total_lines = get_line_no(text);
 	int x, y, lines, columns;
 	int start_x = 0, start_y = 0;
 	int text_lines = 0, text_cols = 0;
+	int start, end;
 	int total_cols = 0;
 	int win_cols = 0;
 	int win_lines = 0;
@@ -514,6 +521,7 @@  void show_scroll_win(WINDOW *main_window,
 	WINDOW *win;
 	WINDOW *pad;
 	PANEL *panel;
+	bool done = false;
 
 	getmaxyx(stdscr, lines, columns);
 
@@ -549,8 +557,7 @@  void show_scroll_win(WINDOW *main_window,
 	panel = new_panel(win);
 
 	/* handle scrolling */
-	do {
-
+	while (!done) {
 		copywin(pad, win, start_y, start_x, 2, 2, text_lines,
 				text_cols, 0);
 		print_in_middle(win,
@@ -593,8 +600,17 @@  void show_scroll_win(WINDOW *main_window,
 		case 'l':
 			start_x++;
 			break;
+		default:
+			if (extra_key_cb) {
+				start = (int)(get_line(text, start_y) - text);
+				end = (int)(get_line(text, start_y + text_lines) - text);
+				if (extra_key_cb(res, start, end, data)) {
+					done = true;
+					break;
+				}
+			}
 		}
-		if (res == 10 || res == 27 || res == 'q' ||
+		if (res == 0 || res == 10 || res == 27 || res == 'q' ||
 			res == KEY_F(F_HELP) || res == KEY_F(F_BACK) ||
 			res == KEY_F(F_EXIT))
 			break;
@@ -606,9 +622,10 @@  void show_scroll_win(WINDOW *main_window,
 			start_x = 0;
 		if (start_x >= total_cols-text_cols)
 			start_x = total_cols-text_cols;
-	} while (res);
+	}
 
 	del_panel(panel);
 	delwin(win);
 	refresh_all_windows(main_window);
+	return res;
 }
diff --git a/scripts/kconfig/nconf.h b/scripts/kconfig/nconf.h
index 6f925bc74eb3..912f668c5772 100644
--- a/scripts/kconfig/nconf.h
+++ b/scripts/kconfig/nconf.h
@@ -67,6 +67,8 @@  typedef enum {
 
 void set_colors(void);
 
+typedef int (*extra_key_cb_fn)(int, size_t, size_t, void *);
+
 /* this changes the windows attributes !!! */
 void print_in_middle(WINDOW *win, int y, int width, const char *str, int attrs);
 int get_line_length(const char *line);
@@ -78,6 +80,8 @@  int dialog_inputbox(WINDOW *main_window,
 		const char *title, const char *prompt,
 		const char *init, char **resultp, int *result_len);
 void refresh_all_windows(WINDOW *main_window);
+int show_scroll_win_ext(WINDOW *main_window, const char *title, char *text,
+			extra_key_cb_fn extra_key_cb, void *data);
 void show_scroll_win(WINDOW *main_window,
 		const char *title,
 		const char *text);