From 9f369ada90200730a1bcb9c6b3d01b344b913674 Mon Sep 17 00:00:00 2001
From: Cheng Renquan <crquan@gmail.com>
Date: Sun, 12 Jul 2009 16:11:44 +0800
Subject: [PATCH] --- yaml --- r: 165559 b: refs/heads/master c:
 6bd5999d1a6166ad357f2ebf5e998ce49a407f62 h: refs/heads/master i:   165557:
 386c38687ad9fe1688444d7ef7ccf2398fd2fcff   165555:
 2528e50557a590a54ff3e23085b33cc31d29157b   165551:
 172ad6af06e08e38a8cc6984320cb438428cc5af v: v3

---
 [refs]                            |  2 +-
 trunk/scripts/kconfig/lkc_proto.h |  2 +
 trunk/scripts/kconfig/menu.c      | 79 +++++++++++++++++++++++++++++++
 3 files changed, 82 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index f1adf8f24c57..f164ee50857d 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 544e433a9e2a8771b8281ac58acb5c794613e705
+refs/heads/master: 6bd5999d1a6166ad357f2ebf5e998ce49a407f62
diff --git a/trunk/scripts/kconfig/lkc_proto.h b/trunk/scripts/kconfig/lkc_proto.h
index 8e69461313d1..ffeb532b2cff 100644
--- a/trunk/scripts/kconfig/lkc_proto.h
+++ b/trunk/scripts/kconfig/lkc_proto.h
@@ -17,6 +17,8 @@ P(menu_get_root_menu,struct menu *,(struct menu *menu));
 P(menu_get_parent_menu,struct menu *,(struct menu *menu));
 P(menu_has_help,bool,(struct menu *menu));
 P(menu_get_help,const char *,(struct menu *menu));
+P(get_symbol_str,void,(struct gstr *r, struct symbol *sym));
+P(menu_get_ext_help,void,(struct menu *menu, struct gstr *help));
 
 /* symbol.c */
 P(symbol_hash,struct symbol *,[SYMBOL_HASHSIZE]);
diff --git a/trunk/scripts/kconfig/menu.c b/trunk/scripts/kconfig/menu.c
index 07ff8d105c9d..931d782a2392 100644
--- a/trunk/scripts/kconfig/menu.c
+++ b/trunk/scripts/kconfig/menu.c
@@ -9,6 +9,9 @@
 #define LKC_DIRECT_LINK
 #include "lkc.h"
 
+static const char nohelp_text[] = N_(
+	"There is no help available for this kernel option.\n");
+
 struct menu rootmenu;
 static struct menu **last_entry_ptr;
 
@@ -451,3 +454,79 @@ const char *menu_get_help(struct menu *menu)
 	else
 		return "";
 }
+
+static void get_prompt_str(struct gstr *r, struct property *prop)
+{
+	int i, j;
+	struct menu *submenu[8], *menu;
+
+	str_printf(r, _("Prompt: %s\n"), _(prop->text));
+	str_printf(r, _("  Defined at %s:%d\n"), prop->menu->file->name,
+		prop->menu->lineno);
+	if (!expr_is_yes(prop->visible.expr)) {
+		str_append(r, _("  Depends on: "));
+		expr_gstr_print(prop->visible.expr, r);
+		str_append(r, "\n");
+	}
+	menu = prop->menu->parent;
+	for (i = 0; menu != &rootmenu && i < 8; menu = menu->parent)
+		submenu[i++] = menu;
+	if (i > 0) {
+		str_printf(r, _("  Location:\n"));
+		for (j = 4; --i >= 0; j += 2) {
+			menu = submenu[i];
+			str_printf(r, "%*c-> %s", j, ' ', _(menu_get_prompt(menu)));
+			if (menu->sym) {
+				str_printf(r, " (%s [=%s])", menu->sym->name ?
+					menu->sym->name : _("<choice>"),
+					sym_get_string_value(menu->sym));
+			}
+			str_append(r, "\n");
+		}
+	}
+}
+
+void get_symbol_str(struct gstr *r, struct symbol *sym)
+{
+	bool hit;
+	struct property *prop;
+
+	if (sym && sym->name)
+		str_printf(r, "Symbol: %s [=%s]\n", sym->name,
+			   sym_get_string_value(sym));
+	for_all_prompts(sym, prop)
+		get_prompt_str(r, prop);
+	hit = false;
+	for_all_properties(sym, prop, P_SELECT) {
+		if (!hit) {
+			str_append(r, "  Selects: ");
+			hit = true;
+		} else
+			str_printf(r, " && ");
+		expr_gstr_print(prop->expr, r);
+	}
+	if (hit)
+		str_append(r, "\n");
+	if (sym->rev_dep.expr) {
+		str_append(r, _("  Selected by: "));
+		expr_gstr_print(sym->rev_dep.expr, r);
+		str_append(r, "\n");
+	}
+	str_append(r, "\n\n");
+}
+
+void menu_get_ext_help(struct menu *menu, struct gstr *help)
+{
+	struct symbol *sym = menu->sym;
+
+	if (menu_has_help(menu)) {
+		if (sym->name) {
+			str_printf(help, "CONFIG_%s:\n\n", sym->name);
+			str_append(help, _(menu_get_help(menu)));
+			str_append(help, "\n");
+		}
+	} else {
+		str_append(help, nohelp_text);
+	}
+	get_symbol_str(help, sym);
+}