This is based on a patch posted to lkml by Petr Baudis on 23 Nov, which was

then considerably hacked up by me.  This eliminates the separate lxdialog and
instead directly uses the lxdialog internals.  This allows 'make menuconfig'
to be much faster.
 -Erik

1 files changed, 375 insertions, 0 deletions

diff --git a/extra/config/util.c b/extra/config/util.c
new file mode 100644
index 000000000..d20730b88
--- /dev/null
+++ b/extra/config/util.c
@@ -0,0 +1,375 @@
+/*
+ *  util.c
+ *
+ *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
+ *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
+ *
+ *  This program is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU General Public License
+ *  as published by the Free Software Foundation; either version 2
+ *  of the License, or (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include "dialog.h"
+
+
+/* use colors by default? */
+bool use_colors = 1;
+
+char *backtitle = NULL;
+
+const char *dialog_result;
+
+/* 
+ * Attribute values, default is for mono display
+ */
+chtype attributes[] =
+{
+    A_NORMAL,			/* screen_attr */
+    A_NORMAL,			/* shadow_attr */
+    A_NORMAL,			/* dialog_attr */
+    A_BOLD,			/* title_attr */
+    A_NORMAL,			/* border_attr */
+    A_REVERSE,			/* button_active_attr */
+    A_DIM,			/* button_inactive_attr */
+    A_REVERSE,			/* button_key_active_attr */
+    A_BOLD,			/* button_key_inactive_attr */
+    A_REVERSE,			/* button_label_active_attr */
+    A_NORMAL,			/* button_label_inactive_attr */
+    A_NORMAL,			/* inputbox_attr */
+    A_NORMAL,			/* inputbox_border_attr */
+    A_NORMAL,			/* searchbox_attr */
+    A_BOLD,			/* searchbox_title_attr */
+    A_NORMAL,			/* searchbox_border_attr */
+    A_BOLD,			/* position_indicator_attr */
+    A_NORMAL,			/* menubox_attr */
+    A_NORMAL,			/* menubox_border_attr */
+    A_NORMAL,			/* item_attr */
+    A_REVERSE,			/* item_selected_attr */
+    A_BOLD,			/* tag_attr */
+    A_REVERSE,			/* tag_selected_attr */
+    A_BOLD,			/* tag_key_attr */
+    A_REVERSE,			/* tag_key_selected_attr */
+    A_BOLD,			/* check_attr */
+    A_REVERSE,			/* check_selected_attr */
+    A_BOLD,			/* uarrow_attr */
+    A_BOLD			/* darrow_attr */
+};
+
+
+#include "colors.h"
+
+/*
+ * Table of color values
+ */
+int color_table[][3] =
+{
+    {SCREEN_FG, SCREEN_BG, SCREEN_HL},
+    {SHADOW_FG, SHADOW_BG, SHADOW_HL},
+    {DIALOG_FG, DIALOG_BG, DIALOG_HL},
+    {TITLE_FG, TITLE_BG, TITLE_HL},
+    {BORDER_FG, BORDER_BG, BORDER_HL},
+    {BUTTON_ACTIVE_FG, BUTTON_ACTIVE_BG, BUTTON_ACTIVE_HL},
+    {BUTTON_INACTIVE_FG, BUTTON_INACTIVE_BG, BUTTON_INACTIVE_HL},
+    {BUTTON_KEY_ACTIVE_FG, BUTTON_KEY_ACTIVE_BG, BUTTON_KEY_ACTIVE_HL},
+    {BUTTON_KEY_INACTIVE_FG, BUTTON_KEY_INACTIVE_BG, BUTTON_KEY_INACTIVE_HL},
+    {BUTTON_LABEL_ACTIVE_FG, BUTTON_LABEL_ACTIVE_BG, BUTTON_LABEL_ACTIVE_HL},
+    {BUTTON_LABEL_INACTIVE_FG, BUTTON_LABEL_INACTIVE_BG,
+     BUTTON_LABEL_INACTIVE_HL},
+    {INPUTBOX_FG, INPUTBOX_BG, INPUTBOX_HL},
+    {INPUTBOX_BORDER_FG, INPUTBOX_BORDER_BG, INPUTBOX_BORDER_HL},
+    {SEARCHBOX_FG, SEARCHBOX_BG, SEARCHBOX_HL},
+    {SEARCHBOX_TITLE_FG, SEARCHBOX_TITLE_BG, SEARCHBOX_TITLE_HL},
+    {SEARCHBOX_BORDER_FG, SEARCHBOX_BORDER_BG, SEARCHBOX_BORDER_HL},
+    {POSITION_INDICATOR_FG, POSITION_INDICATOR_BG, POSITION_INDICATOR_HL},
+    {MENUBOX_FG, MENUBOX_BG, MENUBOX_HL},
+    {MENUBOX_BORDER_FG, MENUBOX_BORDER_BG, MENUBOX_BORDER_HL},
+    {ITEM_FG, ITEM_BG, ITEM_HL},
+    {ITEM_SELECTED_FG, ITEM_SELECTED_BG, ITEM_SELECTED_HL},
+    {TAG_FG, TAG_BG, TAG_HL},
+    {TAG_SELECTED_FG, TAG_SELECTED_BG, TAG_SELECTED_HL},
+    {TAG_KEY_FG, TAG_KEY_BG, TAG_KEY_HL},
+    {TAG_KEY_SELECTED_FG, TAG_KEY_SELECTED_BG, TAG_KEY_SELECTED_HL},
+    {CHECK_FG, CHECK_BG, CHECK_HL},
+    {CHECK_SELECTED_FG, CHECK_SELECTED_BG, CHECK_SELECTED_HL},
+    {UARROW_FG, UARROW_BG, UARROW_HL},
+    {DARROW_FG, DARROW_BG, DARROW_HL},
+};				/* color_table */
+
+/*
+ * Set window to attribute 'attr'
+ */
+void
+attr_clear (WINDOW * win, int height, int width, chtype attr)
+{
+    int i, j;
+
+    wattrset (win, attr);
+    for (i = 0; i < height; i++) {
+	wmove (win, i, 0);
+	for (j = 0; j < width; j++)
+	    waddch (win, ' ');
+    }
+    touchwin (win);
+}
+
+void dialog_clear (void)
+{
+    attr_clear (stdscr, LINES, COLS, screen_attr);
+    /* Display background title if it exists ... - SLH */
+    if (backtitle != NULL) {
+        int i;
+
+        wattrset (stdscr, screen_attr);
+        mvwaddstr (stdscr, 0, 1, (char *)backtitle);
+        wmove (stdscr, 1, 1);
+        for (i = 1; i < COLS - 1; i++)
+            waddch (stdscr, ACS_HLINE);
+    }
+    wnoutrefresh (stdscr);
+}
+
+/*
+ * Do some initialization for dialog
+ */
+void
+init_dialog (void)
+{
+    initscr ();			/* Init curses */
+    keypad (stdscr, TRUE);
+    cbreak ();
+    noecho ();
+
+
+    if (use_colors)	/* Set up colors */
+	color_setup ();
+
+
+    dialog_clear ();
+}
+
+/*
+ * Setup for color display
+ */
+void
+color_setup (void)
+{
+    int i;
+
+    if (has_colors ()) {	/* Terminal supports color? */
+	start_color ();
+
+	/* Initialize color pairs */
+	for (i = 0; i < ATTRIBUTE_COUNT; i++)
+	    init_pair (i + 1, color_table[i][0], color_table[i][1]);
+
+	/* Setup color attributes */
+	for (i = 0; i < ATTRIBUTE_COUNT; i++)
+	    attributes[i] = C_ATTR (color_table[i][2], i + 1);
+    }
+}
+
+/*
+ * End using dialog functions.
+ */
+void
+end_dialog (void)
+{
+    endwin ();
+}
+
+
+/*
+ * 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
+ * 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;
+
+    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);
+    } else {
+	cur_x = x;
+	cur_y = y;
+	newl = 1;
+	word = tempstr;
+	while (word && *word) {
+	    sp = index(word, ' ');
+	    if (sp)
+	        *sp++ = 0;
+
+	    /* Wrap to next line if either the word does not fit,
+	       or it is the first word of a new sentence, and it is
+	       short, and the next word does not fit. */
+	    room = width - cur_x;
+	    wlen = strlen(word);
+	    if (wlen > room ||
+	       (newl && wlen < 4 && sp && wlen+1+strlen(sp) > room
+		     && (!(sp2 = index(sp, ' ')) || wlen+1+(sp2-sp) > room))) {
+		cur_y++;
+		cur_x = x;
+	    }
+	    wmove (win, cur_y, cur_x);
+	    waddstr (win, word);
+	    getyx (win, cur_y, cur_x);
+	    cur_x++;
+	    if (sp && *sp == ' ') {
+	        cur_x++;	/* double space */
+		while (*++sp == ' ');
+		newl = 1;
+	    } else
+	        newl = 0;
+	    word = sp;
+	}
+    }
+}
+
+/*
+ * Print a button
+ */
+void
+print_button (WINDOW * win, const char *label, int y, int x, int selected)
+{
+    int i, temp;
+
+    wmove (win, y, x);
+    wattrset (win, selected ? button_active_attr : button_inactive_attr);
+    waddstr (win, "<");
+    temp = strspn (label, " ");
+    label += temp;
+    wattrset (win, selected ? button_label_active_attr
+	      : button_label_inactive_attr);
+    for (i = 0; i < temp; i++)
+	waddch (win, ' ');
+    wattrset (win, selected ? button_key_active_attr
+	      : button_key_inactive_attr);
+    waddch (win, label[0]);
+    wattrset (win, selected ? button_label_active_attr
+	      : button_label_inactive_attr);
+    waddstr (win, (char *)label + 1);
+    wattrset (win, selected ? button_active_attr : button_inactive_attr);
+    waddstr (win, ">");
+    wmove (win, y, x + temp + 1);
+}
+
+/*
+ * Draw a rectangular box with line drawing characters
+ */
+void
+draw_box (WINDOW * win, int y, int x, int height, int width,
+	  chtype box, chtype border)
+{
+    int i, j;
+
+    wattrset (win, 0);
+    for (i = 0; i < height; i++) {
+	wmove (win, y + i, x);
+	for (j = 0; j < width; j++)
+	    if (!i && !j)
+		waddch (win, border | ACS_ULCORNER);
+	    else if (i == height - 1 && !j)
+		waddch (win, border | ACS_LLCORNER);
+	    else if (!i && j == width - 1)
+		waddch (win, box | ACS_URCORNER);
+	    else if (i == height - 1 && j == width - 1)
+		waddch (win, box | ACS_LRCORNER);
+	    else if (!i)
+		waddch (win, border | ACS_HLINE);
+	    else if (i == height - 1)
+		waddch (win, box | ACS_HLINE);
+	    else if (!j)
+		waddch (win, border | ACS_VLINE);
+	    else if (j == width - 1)
+		waddch (win, box | ACS_VLINE);
+	    else
+		waddch (win, box | ' ');
+    }
+}
+
+/*
+ * Draw shadows along the right and bottom edge to give a more 3D look
+ * to the boxes
+ */
+void
+draw_shadow (WINDOW * win, int y, int x, int height, int width)
+{
+    int i;
+
+    if (has_colors ()) {	/* Whether terminal supports color? */
+	wattrset (win, shadow_attr);
+	wmove (win, y + height, x + 2);
+	for (i = 0; i < width; i++)
+	    waddch (win, winch (win) & A_CHARTEXT);
+	for (i = y + 1; i < y + height + 1; i++) {
+	    wmove (win, i, x + width);
+	    waddch (win, winch (win) & A_CHARTEXT);
+	    waddch (win, winch (win) & A_CHARTEXT);
+	}
+	wnoutrefresh (win);
+    }
+}
+
+/*
+ *  Return the position of the first alphabetic character in a string.
+ */
+int
+first_alpha(const char *string, const char *exempt)
+{
+	int i, in_paren=0, c;
+
+	for (i = 0; i < strlen(string); i++) {
+		c = tolower(string[i]);
+
+		if (strchr("<[(", c)) ++in_paren;
+		if (strchr(">])", c)) --in_paren;
+
+		if ((! in_paren) && isalpha(c) && 
+		     strchr(exempt, c) == 0)
+			return i;
+	}
+
+	return 0;
+}
+
+/*
+ * Get the first selected item in the dialog_list_item list.
+ */
+struct dialog_list_item *
+first_sel_item(int item_no, struct dialog_list_item ** items)
+{
+	int i;
+
+	for (i = 0; i < item_no; i++) {
+		if (items[i]->selected)
+			return items[i];
+	}
+
+	return NULL;
+}