menuconfig: Add jump keys to search results

makes it possible to jump directly to the menu for a configuration entry after
having searched for it with '/'. If this menu is not currently accessible we
jump to the nearest accessible parent instead. After exiting this menu, the
user is returned to the search results where he may jump further in or
elsewhere.

Signed-off-by: Benjamin Poirier <bpoirier@suse.de>
Signed-off-by: Michal Marek <mmarek@suse.cz>

1 files changed, 43 insertions, 21 deletions

diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
index b3a37c2b16a..6f409745b37 100644
--- a/scripts/kconfig/mconf.c
+++ b/scripts/kconfig/mconf.c
@@ -236,16 +236,19 @@ search_help[] = N_(
 	"Result:\n"
 	"-----------------------------------------------------------------\n"
 	"Symbol: FOO [=m]\n"
+	"Type  : tristate\n"
 	"Prompt: Foo bus is used to drive the bar HW\n"
-	"Defined at drivers/pci/Kconfig:47\n"
-	"Depends on: X86_LOCAL_APIC && X86_IO_APIC || IA64\n"
-	"Location:\n"
-	"  -> Bus options (PCI, PCMCIA, EISA, ISA)\n"
-	"    -> PCI support (PCI [=y])\n"
-	"      -> PCI access mode (<choice> [=y])\n"
-	"Selects: LIBCRC32\n"
-	"Selected by: BAR\n"
+	"  Defined at drivers/pci/Kconfig:47\n"
+	"  Depends on: X86_LOCAL_APIC && X86_IO_APIC || IA64\n"
+	"  Location:\n"
+	"    -> Bus options (PCI, PCMCIA, EISA, ISA)\n"
+	"      -> PCI support (PCI [=y])\n"
+	"(1)     -> PCI access mode (<choice> [=y])\n"
+	"  Selects: LIBCRC32\n"
+	"  Selected by: BAR\n"
 	"-----------------------------------------------------------------\n"
+	"o The line 'Type:' shows the type of the configuration option for\n"
+	"  this symbol (boolean, tristate, string, ...)\n"
 	"o The line 'Prompt:' shows the text used in the menu structure for\n"
 	"  this symbol\n"
 	"o The 'Defined at' line tell at what file / line number the symbol\n"
@@ -254,8 +257,12 @@ search_help[] = N_(
 	"  this symbol to be visible in the menu (selectable)\n"
 	"o The 'Location:' lines tell where in the menu structure this symbol\n"
 	"  is located\n"
-	"    A location followed by a [=y] indicate that this is a selectable\n"
-	"    menu item - and current value is displayed inside brackets.\n"
+	"    A location followed by a [=y] indicates that this is a\n"
+	"    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 tell what symbol will be automatically\n"
 	"  selected if this symbol is selected (y or m)\n"
 	"o The 'Selected by' line tell what symbol has selected this symbol\n"
@@ -274,7 +281,7 @@ static int child_count;
 static int single_menu_mode;
 static int show_all_options;
 
-static void conf(struct menu *menu);
+static void conf(struct menu *menu, struct menu *active_menu);
 static void conf_choice(struct menu *menu);
 static void conf_string(struct menu *menu);
 static void conf_load(void);
@@ -308,7 +315,9 @@ static void search_conf(void)
 	struct symbol **sym_arr;
 	struct gstr res;
 	char *dialog_input;
-	int dres;
+	int dres, vscroll = 0, hscroll = 0;
+	bool again;
+
 again:
 	dialog_clear();
 	dres = dialog_inputbox(_("Search Configuration Parameter"),
@@ -331,10 +340,24 @@ again:
 		dialog_input += strlen(CONFIG_);
 
 	sym_arr = sym_re_search(dialog_input);
-	res = get_relations_str(sym_arr);
+	do {
+		struct menu *jumps[JUMP_NB] = {0};
+		int keys[JUMP_NB + 1] = {0}, i;
+
+		res = get_relations_str(sym_arr, jumps);
+		for (i = 0; i < JUMP_NB && jumps[i]; i++)
+			keys[i] = '1' + i;
+		dres = show_textbox_ext(_("Search Results"), str_get(&res), 0,
+					0, keys, &vscroll, &hscroll);
+		again = false;
+		for (i = 0; i < JUMP_NB && jumps[i]; i++)
+			if (dres == keys[i]) {
+				conf(jumps[i]->parent, jumps[i]);
+				again = true;
+			}
+		str_free(&res);
+	} while (again);
 	free(sym_arr);
-	show_textbox(_("Search Results"), str_get(&res), 0, 0);
-	str_free(&res);
 }
 
 static void build_conf(struct menu *menu)
@@ -515,12 +538,11 @@ conf_childs:
 	indent -= doint;
 }
 
-static void conf(struct menu *menu)
+static void conf(struct menu *menu, struct menu *active_menu)
 {
 	struct menu *submenu;
 	const char *prompt = menu_get_prompt(menu);
 	struct symbol *sym;
-	struct menu *active_menu = NULL;
 	int res;
 	int s_scroll = 0;
 
@@ -563,13 +585,13 @@ static void conf(struct menu *menu)
 				if (single_menu_mode)
 					submenu->data = (void *) (long) !submenu->data;
 				else
-					conf(submenu);
+					conf(submenu, NULL);
 				break;
 			case 't':
 				if (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)
 					conf_choice(submenu);
 				else if (submenu->prompt->type == P_MENU)
-					conf(submenu);
+					conf(submenu, NULL);
 				break;
 			case 's':
 				conf_string(submenu);
@@ -608,7 +630,7 @@ static void conf(struct menu *menu)
 			if (item_is_tag('t'))
 				sym_toggle_tristate_value(sym);
 			else if (item_is_tag('m'))
-				conf(submenu);
+				conf(submenu, NULL);
 			break;
 		case 7:
 			search_conf();
@@ -877,7 +899,7 @@ int main(int ac, char **av)
 
 	set_config_filename(conf_get_configname());
 	do {
-		conf(&rootmenu);
+		conf(&rootmenu, NULL);
 		res = handle_exit();
 	} while (res == KEY_ESC);