kconfig: update to follow upstream more closely

This might break a bunch of stuff (eg. win32 support),
but otherwise introduces nconfig (ncurses based configuration
frontend), partial configuration headers for improved dependency
tracking (which requires some more build system support) and
various bug fixes.

Change-Id: I5d8a280810c6a26fc3fd056d5d94cb9e591a0ff5
Signed-off-by: Patrick Georgi <patrick@georgi-clan.de>
Reviewed-on: http://review.coreboot.org/5487
Tested-by: build bot (Jenkins)
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
diff --git a/util/kconfig/lxdialog/util.c b/util/kconfig/lxdialog/util.c
index afad684..58a8289 100644
--- a/util/kconfig/lxdialog/util.c
+++ b/util/kconfig/lxdialog/util.c
@@ -19,9 +19,13 @@
  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 
-#include "dialog.h"
 #include <stdarg.h>
 
+#include "dialog.h"
+
+/* Needed in signal handler in mconf.c */
+int saved_x, saved_y;
+
 struct dialog_info dlg;
 
 static void set_mono_theme(void)
@@ -250,15 +254,56 @@
 
 void dialog_clear(void)
 {
-	attr_clear(stdscr, LINES, COLS, dlg.screen.atr);
+	int lines, columns;
+
+	lines = getmaxy(stdscr);
+	columns = getmaxx(stdscr);
+
+	attr_clear(stdscr, lines, columns, dlg.screen.atr);
 	/* Display background title if it exists ... - SLH */
 	if (dlg.backtitle != NULL) {
-		int i;
+		int i, len = 0, skip = 0;
+		struct subtitle_list *pos;
 
 		wattrset(stdscr, dlg.screen.atr);
 		mvwaddstr(stdscr, 0, 1, (char *)dlg.backtitle);
+
+		for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
+			/* 3 is for the arrow and spaces */
+			len += strlen(pos->text) + 3;
+		}
+
 		wmove(stdscr, 1, 1);
-		for (i = 1; i < COLS - 1; i++)
+		if (len > columns - 2) {
+			const char *ellipsis = "[...] ";
+			waddstr(stdscr, ellipsis);
+			skip = len - (columns - 2 - strlen(ellipsis));
+		}
+
+		for (pos = dlg.subtitles; pos != NULL; pos = pos->next) {
+			if (skip == 0)
+				waddch(stdscr, ACS_RARROW);
+			else
+				skip--;
+
+			if (skip == 0)
+				waddch(stdscr, ' ');
+			else
+				skip--;
+
+			if (skip < strlen(pos->text)) {
+				waddstr(stdscr, pos->text + skip);
+				skip = 0;
+			} else
+				skip -= strlen(pos->text);
+
+			if (skip == 0)
+				waddch(stdscr, ' ');
+			else
+				skip--;
+		}
+
+		for (i = len + 1; i < columns - 1; i++)
 			waddch(stdscr, ACS_HLINE);
 	}
 	wnoutrefresh(stdscr);
@@ -272,8 +317,12 @@
 	int height, width;
 
 	initscr();		/* Init curses */
+
+	/* Get current cursor position for signal handler in mconf.c */
+	getyx(stdscr, saved_y, saved_x);
+
 	getmaxyx(stdscr, height, width);
-	if (height < 19 || width < 80) {
+	if (height < WINDOW_HEIGTH_MIN || width < WINDOW_WIDTH_MIN) {
 		endwin();
 		return -ERRDISPLAYTOOSMALL;
 	}
@@ -294,6 +343,11 @@
 	dlg.backtitle = backtitle;
 }
 
+void set_dialog_subtitles(struct subtitle_list *subtitles)
+{
+	dlg.subtitles = subtitles;
+}
+
 /*
  * End using dialog functions.
  */
@@ -322,27 +376,19 @@
 /*
  * Print a string of text in a window, automatically wrap around to the
  * next line if the string is too long to fit on one line. Newline
- * characters '\n' are replaced by spaces.  We start on a new line
+ * characters '\n' are propperly processed.  We start on a new line
  * if there is no room for at least 4 nonblanks following a double-space.
  */
 void print_autowrap(WINDOW * win, const char *prompt, int width, int y, int x)
 {
 	int newl, cur_x, cur_y;
-	int i, prompt_len, room, wlen;
-	char tempstr[MAX_LEN + 1], *word, *sp, *sp2;
+	int prompt_len, room, wlen;
+	char tempstr[MAX_LEN + 1], *word, *sp, *sp2, *newline_separator = 0;
 
 	strcpy(tempstr, prompt);
 
 	prompt_len = strlen(tempstr);
 
-	/*
-	 * Remove newlines
-	 */
-	for (i = 0; i < prompt_len; i++) {
-		if (tempstr[i] == '\n')
-			tempstr[i] = ' ';
-	}
-
 	if (prompt_len <= width - x * 2) {	/* If prompt is short */
 		wmove(win, y, (width - prompt_len) / 2);
 		waddstr(win, tempstr);
@@ -352,7 +398,10 @@
 		newl = 1;
 		word = tempstr;
 		while (word && *word) {
-			sp = strchr(word, ' ');
+			sp = strpbrk(word, "\n ");
+			if (sp && *sp == '\n')
+				newline_separator = sp;
+
 			if (sp)
 				*sp++ = 0;
 
@@ -364,7 +413,7 @@
 			if (wlen > room ||
 			    (newl && wlen < 4 && sp
 			     && wlen + 1 + strlen(sp) > room
-			     && (!(sp2 = strchr(sp, ' '))
+			     && (!(sp2 = strpbrk(sp, "\n "))
 				 || wlen + 1 + (sp2 - sp) > room))) {
 				cur_y++;
 				cur_x = x;
@@ -372,7 +421,15 @@
 			wmove(win, cur_y, cur_x);
 			waddstr(win, word);
 			getyx(win, cur_y, cur_x);
-			cur_x++;
+
+			/* Move to the next line if the word separator was a newline */
+			if (newline_separator) {
+				cur_y++;
+				cur_x = x;
+				newline_separator = 0;
+			} else
+				cur_x++;
+
 			if (sp && *sp == ' ') {
 				cur_x++;	/* double space */
 				while (*++sp == ' ') ;
@@ -527,9 +584,7 @@
 int on_key_resize(void)
 {
 	dialog_clear();
-#ifdef NCURSES_VERSION
 	return KEY_RESIZE;
-#endif
 }
 
 struct dialog_list *item_cur;