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| Current File : //sys/amd64/compile/hs32/modules/usr/src/sys/modules/xfs/@/boot/forth/menu.4th |
\ Copyright (c) 2003 Scott Long <scottl@freebsd.org>
\ Copyright (c) 2003 Aleksander Fafula <alex@fafula.com>
\ Copyright (c) 2006-2011 Devin Teske <devinteske@hotmail.com>
\ All rights reserved.
\
\ Redistribution and use in source and binary forms, with or without
\ modification, are permitted provided that the following conditions
\ are met:
\ 1. Redistributions of source code must retain the above copyright
\ notice, this list of conditions and the following disclaimer.
\ 2. Redistributions in binary form must reproduce the above copyright
\ notice, this list of conditions and the following disclaimer in the
\ documentation and/or other materials provided with the distribution.
\
\ THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
\ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
\ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
\ ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
\ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
\ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
\ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
\ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
\ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
\ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
\ SUCH DAMAGE.
\
\ $FreeBSD: release/9.1.0/sys/boot/forth/menu.4th 230219 2012-01-16 14:55:42Z pluknet $
marker task-menu.4th
\ Frame drawing
include /boot/frames.4th
f_double \ Set frames to double (see frames.4th). Replace with
\ f_single if you want single frames.
46 constant dot \ ASCII definition of a period (in decimal)
4 constant menu_timeout_default_x \ default column position of timeout
23 constant menu_timeout_default_y \ default row position of timeout msg
10 constant menu_timeout_default \ default timeout (in seconds)
\ Customize the following values with care
1 constant menu_start \ Numerical prefix of first menu item
dot constant bullet \ Menu bullet (appears after numerical prefix)
5 constant menu_x \ Row position of the menu (from the top)
10 constant menu_y \ Column position of the menu (from left side)
\ Menu Appearance
variable menuidx \ Menu item stack for number prefixes
variable menurow \ Menu item stack for positioning
variable menubllt \ Menu item bullet
\ Menu Positioning
variable menuX \ Menu X offset (columns)
variable menuY \ Menu Y offset (rows)
\ Menu-item key association/detection
variable menukey1
variable menukey2
variable menukey3
variable menukey4
variable menukey5
variable menukey6
variable menukey7
variable menukey8
variable menureboot
variable menurebootadded
variable menuacpi
variable menuoptions
\ Menu timer [count-down] variables
variable menu_timeout_enabled \ timeout state (internal use only)
variable menu_time \ variable for tracking the passage of time
variable menu_timeout \ determined configurable delay duration
variable menu_timeout_x \ column position of timeout message
variable menu_timeout_y \ row position of timeout message
\ Boolean option status variables
variable toggle_state1
variable toggle_state2
variable toggle_state3
variable toggle_state4
variable toggle_state5
variable toggle_state6
variable toggle_state7
variable toggle_state8
\ Array option status variables
variable cycle_state1
variable cycle_state2
variable cycle_state3
variable cycle_state4
variable cycle_state5
variable cycle_state6
variable cycle_state7
variable cycle_state8
\ Containers for storing the initial caption text
create init_text1 255 allot
create init_text2 255 allot
create init_text3 255 allot
create init_text4 255 allot
create init_text5 255 allot
create init_text6 255 allot
create init_text7 255 allot
create init_text8 255 allot
: arch-i386? ( -- BOOL ) \ Returns TRUE (-1) on i386, FALSE (0) otherwise.
s" arch-i386" environment? dup if
drop
then
;
\ This function prints a menu item at menuX (row) and menuY (column), returns
\ the incremental decimal ASCII value associated with the menu item, and
\ increments the cursor position to the next row for the creation of the next
\ menu item. This function is called by the menu-create function. You need not
\ call it directly.
\
: printmenuitem ( menu_item_str -- ascii_keycode )
menurow dup @ 1+ swap ! ( increment menurow )
menuidx dup @ 1+ swap ! ( increment menuidx )
\ Calculate the menuitem row position
menurow @ menuY @ +
\ Position the cursor at the menuitem position
dup menuX @ swap at-xy
\ Print the value of menuidx
loader_color? if
." [1m" ( [22m )
then
menuidx @ .
loader_color? if
." [37m" ( [39m )
then
\ Move the cursor forward 1 column
dup menuX @ 1+ swap at-xy
menubllt @ emit \ Print the menu bullet using the emit function
\ Move the cursor to the 3rd column from the current position
\ to allow for a space between the numerical prefix and the
\ text caption
menuX @ 3 + swap at-xy
\ Print the menu caption (we expect a string to be on the stack
\ prior to invoking this function)
type
\ Here we will add the ASCII decimal of the numerical prefix
\ to the stack (decimal ASCII for `1' is 49) as a "return value"
menuidx @ 48 +
;
: toggle_menuitem ( N -- N ) \ toggles caption text and internal menuitem state
\ ASCII numeral equal to user-selected menu item must be on the stack.
\ We do not modify the stack, so the ASCII numeral is left on top.
s" init_textN" \ base name of buffer
-rot 2dup 9 + c! rot \ replace 'N' with ASCII num
evaluate c@ 0= if
\ NOTE: no need to check toggle_stateN since the first time we
\ are called, we will populate init_textN. Further, we don't
\ need to test whether menu_caption[x] (ansi_caption[x] when
\ loader_color=1) is available since we would not have been
\ called if the caption was NULL.
\ base name of environment variable
loader_color? if
s" ansi_caption[x]"
else
s" menu_caption[x]"
then
-rot 2dup 13 + c! rot \ replace 'x' with ASCII numeral
getenv dup -1 <> if
s" init_textN" \ base name of buffer
4 pick \ copy ASCII num to top
rot tuck 9 + c! swap \ replace 'N' with ASCII num
evaluate
\ now we have the buffer c-addr on top
\ ( followed by c-addr/u of current caption )
\ Copy the current caption into our buffer
2dup c! -rot \ store strlen at first byte
begin
rot 1+ \ bring alt addr to top and increment
-rot -rot \ bring buffer addr to top
2dup c@ swap c! \ copy current character
1+ \ increment buffer addr
rot 1- \ bring buffer len to top and decrement
dup 0= \ exit loop if buffer len is zero
until
2drop \ buffer len/addr
drop \ alt addr
else
drop
then
then
\ Now we are certain to have init_textN populated with the initial
\ value of menu_caption[x] (ansi_caption[x] with loader_color enabled).
\ We can now use init_textN as the untoggled caption and
\ toggled_text[x] (toggled_ansi[x] with loader_color enabled) as the
\ toggled caption and store the appropriate value into menu_caption[x]
\ (again, ansi_caption[x] with loader_color enabled). Last, we'll
\ negate the toggled state so that we reverse the flow on subsequent
\ calls.
s" toggle_stateN @" \ base name of toggle state var
-rot 2dup 12 + c! rot \ replace 'N' with ASCII numeral
evaluate 0= if
\ state is OFF, toggle to ON
\ base name of toggled text var
loader_color? if
s" toggled_ansi[x]"
else
s" toggled_text[x]"
then
-rot 2dup 13 + c! rot \ replace 'x' with ASCII num
getenv dup -1 <> if
\ Assign toggled text to menu caption
\ base name of caption var
loader_color? if
s" ansi_caption[x]"
else
s" menu_caption[x]"
then
4 pick \ copy ASCII num to top
rot tuck 13 + c! swap \ replace 'x' with ASCII num
setenv \ set new caption
else
\ No toggled text, keep the same caption
drop
then
true \ new value of toggle state var (to be stored later)
else
\ state is ON, toggle to OFF
s" init_textN" \ base name of initial text buffer
-rot 2dup 9 + c! rot \ replace 'N' with ASCII numeral
evaluate \ convert string to c-addr
count \ convert c-addr to c-addr/u
\ base name of caption var
loader_color? if
s" ansi_caption[x]"
else
s" menu_caption[x]"
then
4 pick \ copy ASCII num to top
rot tuck 13 + c! swap \ replace 'x' with ASCII numeral
setenv \ set new caption
false \ new value of toggle state var (to be stored below)
then
\ now we'll store the new toggle state (on top of stack)
s" toggle_stateN" \ base name of toggle state var
3 pick \ copy ASCII numeral to top
rot tuck 12 + c! swap \ replace 'N' with ASCII numeral
evaluate \ convert string to addr
! \ store new value
;
: cycle_menuitem ( N -- N ) \ cycles through array of choices for a menuitem
\ ASCII numeral equal to user-selected menu item must be on the stack.
\ We do not modify the stack, so the ASCII numeral is left on top.
s" cycle_stateN" \ base name of array state var
-rot 2dup 11 + c! rot \ replace 'N' with ASCII numeral
evaluate \ we now have a pointer to the proper variable
dup @ \ resolve the pointer (but leave it on the stack)
1+ \ increment the value
\ Before assigning the (incremented) value back to the pointer,
\ let's test for the existence of this particular array element.
\ If the element exists, we'll store index value and move on.
\ Otherwise, we'll loop around to zero and store that.
dup 48 + \ duplicate Array index and convert to ASCII numeral
\ base name of array caption text
loader_color? if
s" ansi_caption[x][y]"
else
s" menu_caption[x][y]"
then
-rot tuck 16 + c! swap \ replace 'y' with Array index
4 pick rot tuck 13 + c! swap \ replace 'x' with menu choice
\ Now test for the existence of our incremented array index in the
\ form of $menu_caption[x][y] ($ansi_caption[x][y] with loader_color
\ enabled) as set in loader.rc(5), et. al.
getenv dup -1 = if
\ No caption set for this array index. Loop back to zero.
drop ( getenv cruft )
drop ( incremented array index )
0 ( new array index that will be stored later )
\ base name of caption var
loader_color? if
s" ansi_caption[x][0]"
else
s" menu_caption[x][0]"
then
4 pick rot tuck 13 + c! swap \ replace 'x' with menu choice
getenv dup -1 = if
\ This is highly unlikely to occur, but to make
\ sure that things move along smoothly, allocate
\ a temporary NULL string
s" "
then
then
\ At this point, we should have the following on the stack (in order,
\ from bottom to top):
\
\ N - Ascii numeral representing the menu choice (inherited)
\ Addr - address of our internal cycle_stateN variable
\ N - zero-based number we intend to store to the above
\ C-Addr - string value we intend to store to menu_caption[x]
\ (or ansi_caption[x] with loader_color enabled)
\
\ Let's perform what we need to with the above.
\ base name of menuitem caption var
loader_color? if
s" ansi_caption[x]"
else
s" menu_caption[x]"
then
6 pick rot tuck 13 + c! swap \ replace 'x' with menu choice
setenv \ set the new caption
swap ! \ update array state variable
;
: acpipresent? ( -- flag ) \ Returns TRUE if ACPI is present, FALSE otherwise
s" hint.acpi.0.rsdp" getenv
dup -1 = if
drop false exit
then
2drop
true
;
: acpienabled? ( -- flag ) \ Returns TRUE if ACPI is enabled, FALSE otherwise
s" hint.acpi.0.disabled" getenv
dup -1 <> if
s" 0" compare 0<> if
false exit
then
else
drop
then
true
;
\ This function prints the appropriate menuitem basename to the stack if an
\ ACPI option is to be presented to the user, otherwise returns -1. Used
\ internally by menu-create, you need not (nor should you) call this directly.
\
: acpimenuitem ( -- C-Addr | -1 )
arch-i386? if
acpipresent? if
acpienabled? if
loader_color? if
s" toggled_ansi[x]"
else
s" toggled_text[x]"
then
else
loader_color? if
s" ansi_caption[x]"
else
s" menu_caption[x]"
then
then
else
menuidx dup @ 1+ swap ! ( increment menuidx )
-1
then
else
-1
then
;
\ This function creates the list of menu items. This function is called by the
\ menu-display function. You need not be call it directly.
\
: menu-create ( -- )
\ Print the frame caption at (x,y)
s" loader_menu_title" getenv dup -1 = if
drop s" Welcome to FreeBSD"
then
24 over 2 / - 9 at-xy type
\ Print our menu options with respective key/variable associations.
\ `printmenuitem' ends by adding the decimal ASCII value for the
\ numerical prefix to the stack. We store the value left on the stack
\ to the key binding variable for later testing against a character
\ captured by the `getkey' function.
\ Note that any menu item beyond 9 will have a numerical prefix on the
\ screen consisting of the first digit (ie. 1 for the tenth menu item)
\ and the key required to activate that menu item will be the decimal
\ ASCII of 48 plus the menu item (ie. 58 for the tenth item, aka. `:')
\ which is misleading and not desirable.
\
\ Thus, we do not allow more than 8 configurable items on the menu
\ (with "Reboot" as the optional ninth and highest numbered item).
\
\ Initialize the ACPI option status.
\
0 menuacpi !
s" menu_acpi" getenv -1 <> if
c@ dup 48 > over 57 < and if ( '1' <= c1 <= '8' )
menuacpi !
arch-i386? if acpipresent? if
\
\ Set menu toggle state to active state
\ (required by generic toggle_menuitem)
\
menuacpi @
s" acpienabled? toggle_stateN !"
-rot tuck 25 + c! swap
evaluate
then then
else
drop
then
then
\
\ Initialize the menu_options visual separator.
\
0 menuoptions !
s" menu_options" getenv -1 <> if
c@ dup 48 > over 57 < and if ( '1' <= c1 <= '8' )
menuoptions !
else
drop
then
then
\ Initialize "Reboot" menu state variable (prevents double-entry)
false menurebootadded !
49 \ Iterator start (loop range 49 to 56; ASCII '1' to '8')
begin
\ If the "Options:" separator, print it.
dup menuoptions @ = if
\ Optionally add a reboot option to the menu
s" menu_reboot" getenv -1 <> if
drop
s" Reboot" printmenuitem menureboot !
true menurebootadded !
then
menuX @
menurow @ 2 + menurow !
menurow @ menuY @ +
at-xy
." Options:"
then
\ If this is the ACPI menu option, act accordingly.
dup menuacpi @ = if
acpimenuitem ( -- C-Addr | -1 )
else
loader_color? if
s" ansi_caption[x]"
else
s" menu_caption[x]"
then
then
( C-Addr | -1 )
dup -1 <> if
\ replace 'x' with current iteration
-rot 2dup 13 + c! rot
\ test for environment variable
getenv dup -1 <> if
printmenuitem ( C-Addr -- N )
s" menukeyN !" \ generate cmd to store result
-rot 2dup 7 + c! rot
evaluate
else
drop
then
else
drop
s" menu_command[x]"
-rot 2dup 13 + c! rot ( replace 'x' )
unsetenv
then
1+ dup 56 > \ add 1 to iterator, continue if less than 57
until
drop \ iterator
\ Optionally add a reboot option to the menu
menurebootadded @ true <> if
s" menu_reboot" getenv -1 <> if
drop \ no need for the value
s" Reboot" \ menu caption (required by printmenuitem)
printmenuitem
menureboot !
else
0 menureboot !
then
then
;
\ Takes a single integer on the stack and updates the timeout display. The
\ integer must be between 0 and 9 (we will only update a single digit in the
\ source message).
\
: menu-timeout-update ( N -- )
dup 9 > if ( N N 9 -- N )
drop ( N -- )
9 ( maximum: -- N )
then
dup 0 < if ( N N 0 -- N )
drop ( N -- )
0 ( minimum: -- N )
then
48 + ( convert single-digit numeral to ASCII: N 48 -- N )
s" Autoboot in N seconds. [Space] to pause" ( N -- N Addr C )
2 pick 48 - 0> if ( N Addr C N 48 -- N Addr C )
\ Modify 'N' (Addr+12) above to reflect time-left
-rot ( N Addr C -- C N Addr )
tuck ( C N Addr -- C Addr N Addr )
12 + ( C Addr N Addr -- C Addr N Addr2 )
c! ( C Addr N Addr2 -- C Addr )
swap ( C Addr -- Addr C )
menu_timeout_x @
menu_timeout_y @
at-xy ( position cursor: Addr C N N -- Addr C )
type ( print message: Addr C -- )
else ( N Addr C N -- N Addr C )
menu_timeout_x @
menu_timeout_y @
at-xy ( position cursor: N Addr C N N -- N Addr C )
spaces ( erase message: N Addr C -- N Addr )
2drop ( N Addr -- )
then
0 25 at-xy ( position cursor back at bottom-left )
;
\ This function blocks program flow (loops forever) until a key is pressed.
\ The key that was pressed is added to the top of the stack in the form of its
\ decimal ASCII representation. This function is called by the menu-display
\ function. You need not call it directly.
\
: getkey ( -- ascii_keycode )
begin \ loop forever
menu_timeout_enabled @ 1 = if
( -- )
seconds ( get current time: -- N )
dup menu_time @ <> if ( has time elapsed?: N N N -- N )
\ At least 1 second has elapsed since last loop
\ so we will decrement our "timeout" (really a
\ counter, insuring that we do not proceed too
\ fast) and update our timeout display.
menu_time ! ( update time record: N -- )
menu_timeout @ ( "time" remaining: -- N )
dup 0> if ( greater than 0?: N N 0 -- N )
1- ( decrement counter: N -- N )
dup menu_timeout !
( re-assign: N N Addr -- N )
then
( -- N )
dup 0= swap 0< or if ( N <= 0?: N N -- )
\ halt the timer
0 menu_timeout ! ( 0 Addr -- )
0 menu_timeout_enabled ! ( 0 Addr -- )
then
\ update the timer display ( N -- )
menu_timeout @ menu-timeout-update
menu_timeout @ 0= if
\ We've reached the end of the timeout
\ (user did not cancel by pressing ANY
\ key)
s" menu_timeout_command" getenv dup
-1 = if
drop \ clean-up
else
evaluate
then
then
else ( -- N )
\ No [detectable] time has elapsed (in seconds)
drop ( N -- )
then
( -- )
then
key? if \ Was a key pressed? (see loader(8))
\ An actual key was pressed (if the timeout is running,
\ kill it regardless of which key was pressed)
menu_timeout @ 0<> if
0 menu_timeout !
0 menu_timeout_enabled !
\ clear screen of timeout message
0 menu-timeout-update
then
\ get the key that was pressed and exit (if we
\ get a non-zero ASCII code)
key dup 0<> if
exit
else
drop
then
then
50 ms \ sleep for 50 milliseconds (see loader(8))
again
;
: menu-erase ( -- ) \ Erases menu and resets positioning variable to positon 1.
\ Clear the screen area associated with the interactive menu
menuX @ menuY @
2dup at-xy 38 spaces 1+ 2dup at-xy 38 spaces 1+
2dup at-xy 38 spaces 1+ 2dup at-xy 38 spaces 1+
2dup at-xy 38 spaces 1+ 2dup at-xy 38 spaces 1+
2dup at-xy 38 spaces 1+ 2dup at-xy 38 spaces 1+
2dup at-xy 38 spaces 1+ 2dup at-xy 38 spaces 1+
2dup at-xy 38 spaces 1+ 2dup at-xy 38 spaces
2drop
\ Reset the starting index and position for the menu
menu_start 1- menuidx !
0 menurow !
;
\ Erase and redraw the menu. Useful if you change a caption and want to
\ update the menu to reflect the new value.
\
: menu-redraw ( -- )
menu-erase
menu-create
;
\ This function initializes the menu. Call this from your `loader.rc' file
\ before calling any other menu-related functions.
\
: menu-init ( -- )
menu_start
1- menuidx ! \ Initialize the starting index for the menu
0 menurow ! \ Initialize the starting position for the menu
42 13 2 9 box \ Draw frame (w,h,x,y)
0 25 at-xy \ Move cursor to the bottom for output
;
\ Main function. Call this from your `loader.rc' file.
\
: menu-display ( -- )
0 menu_timeout_enabled ! \ start with automatic timeout disabled
\ check indication that automatic execution after delay is requested
s" menu_timeout_command" getenv -1 <> if ( Addr C -1 -- | Addr )
drop ( just testing existence right now: Addr -- )
\ initialize state variables
seconds menu_time ! ( store the time we started )
1 menu_timeout_enabled ! ( enable automatic timeout )
\ read custom time-duration (if set)
s" autoboot_delay" getenv dup -1 = if
drop \ no custom duration (remove dup'd bunk -1)
menu_timeout_default \ use default setting
else
2dup ?number 0= if ( if not a number )
\ disable timeout if "NO", else use default
s" NO" compare-insensitive 0= if
0 menu_timeout_enabled !
0 ( assigned to menu_timeout below )
else
menu_timeout_default
then
else
-rot 2drop
\ boot immediately if less than zero
dup 0< if
drop
menu-create
0 25 at-xy
0 boot
then
then
then
menu_timeout ! ( store value on stack from above )
menu_timeout_enabled @ 1 = if
\ read custom column position (if set)
s" loader_menu_timeout_x" getenv dup -1 = if
drop \ no custom column position
menu_timeout_default_x \ use default setting
else
\ make sure custom position is a number
?number 0= if
menu_timeout_default_x \ or use default
then
then
menu_timeout_x ! ( store value on stack from above )
\ read custom row position (if set)
s" loader_menu_timeout_y" getenv dup -1 = if
drop \ no custom row position
menu_timeout_default_y \ use default setting
else
\ make sure custom position is a number
?number 0= if
menu_timeout_default_y \ or use default
then
then
menu_timeout_y ! ( store value on stack from above )
then
then
menu-create
begin \ Loop forever
0 25 at-xy \ Move cursor to the bottom for output
getkey \ Block here, waiting for a key to be pressed
dup -1 = if
drop exit \ Caught abort (abnormal return)
then
\ Boot if the user pressed Enter/Ctrl-M (13) or
\ Ctrl-Enter/Ctrl-J (10)
dup over 13 = swap 10 = or if
drop ( no longer needed )
s" boot" evaluate
exit ( pedantic; never reached )
then
\ Evaluate the decimal ASCII value against known menu item
\ key associations and act accordingly
49 \ Iterator start (loop range 49 to 56; ASCII '1' to '8')
begin
s" menukeyN @"
\ replace 'N' with current iteration
-rot 2dup 7 + c! rot
evaluate rot tuck = if
\ Adjust for missing ACPI menuitem on non-i386
arch-i386? true <> menuacpi @ 0<> and if
menuacpi @ over 2dup < -rot = or
over 58 < and if
( key >= menuacpi && key < 58: N -- N )
1+
then
then
\ base env name for the value (x is a number)
s" menu_command[x]"
\ Copy ASCII number to string at offset 13
-rot 2dup 13 + c! rot
\ Test for the environment variable
getenv dup -1 <> if
\ Execute the stored procedure
evaluate
\ We expect there to be a non-zero
\ value left on the stack after
\ executing the stored procedure.
\ If so, continue to run, else exit.
0= if
drop \ key pressed
drop \ loop iterator
exit
else
swap \ need iterator on top
then
then
\ Re-adjust for missing ACPI menuitem
arch-i386? true <> menuacpi @ 0<> and if
swap
menuacpi @ 1+ over 2dup < -rot = or
over 59 < and if
1-
then
swap
then
else
swap \ need iterator on top
then
\
\ Check for menu keycode shortcut(s)
\
s" menu_keycode[x]"
-rot 2dup 13 + c! rot
getenv dup -1 = if
drop
else
?number 0<> if
rot tuck = if
swap
s" menu_command[x]"
-rot 2dup 13 + c! rot
getenv dup -1 <> if
evaluate
0= if
2drop
exit
then
else
drop
then
else
swap
then
then
then
1+ dup 56 > \ increment iterator
\ continue if less than 57
until
drop \ loop iterator
menureboot @ = if 0 reboot then
again \ Non-operational key was pressed; repeat
;
\ This function unsets all the possible environment variables associated with
\ creating the interactive menu.
\
: menu-unset ( -- )
49 \ Iterator start (loop range 49 to 56; ASCII '1' to '8')
begin
\ Unset variables in-order of appearance in menu.4th(8)
s" menu_caption[x]" \ basename for caption variable
-rot 2dup 13 + c! rot \ replace 'x' with current iteration
unsetenv \ not erroneous to unset unknown var
s" menu_command[x]" \ command basename
-rot 2dup 13 + c! rot \ replace 'x'
unsetenv
s" menu_keycode[x]" \ keycode basename
-rot 2dup 13 + c! rot \ replace 'x'
unsetenv
s" ansi_caption[x]" \ ANSI caption basename
-rot 2dup 13 + c! rot \ replace 'x'
unsetenv
s" toggled_text[x]" \ toggle_menuitem caption basename
-rot 2dup 13 + c! rot \ replace 'x'
unsetenv
s" toggled_ansi[x]" \ toggle_menuitem ANSI caption basename
-rot 2dup 13 + c! rot \ replace 'x'
unsetenv
s" menu_caption[x][y]" \ cycle_menuitem caption
-rot 2dup 13 + c! rot \ replace 'x'
49 -rot
begin
16 2over rot + c! \ replace 'y'
2dup unsetenv
rot 1+ dup 56 > 2swap rot
until
2drop drop
s" ansi_caption[x][y]" \ cycle_menuitem ANSI caption
-rot 2dup 13 + c! rot \ replace 'x'
49 -rot
begin
16 2over rot + c! \ replace 'y'
2dup unsetenv
rot 1+ dup 56 > 2swap rot
until
2drop drop
s" 0 menukeyN !" \ basename for key association var
-rot 2dup 9 + c! rot \ replace 'N' with current iteration
evaluate \ assign zero (0) to key assoc. var
1+ dup 56 > \ increment, continue if less than 57
until
drop \ iterator
\ unset the timeout command
s" menu_timeout_command" unsetenv
\ clear the "Reboot" menu option flag
s" menu_reboot" unsetenv
0 menureboot !
\ clear the ACPI menu option flag
s" menu_acpi" unsetenv
0 menuacpi !
\ clear the "Options" menu separator flag
s" menu_options" unsetenv
0 menuoptions !
;
\ This function both unsets menu variables and visually erases the menu area
\ in-preparation for another menu.
\
: menu-clear ( -- )
menu-unset
menu-erase
;
\ Assign configuration values
bullet menubllt !
10 menuY !
5 menuX !
\ Initialize our boolean state variables
0 toggle_state1 !
0 toggle_state2 !
0 toggle_state3 !
0 toggle_state4 !
0 toggle_state5 !
0 toggle_state6 !
0 toggle_state7 !
0 toggle_state8 !
\ Initialize our array state variables
0 cycle_state1 !
0 cycle_state2 !
0 cycle_state3 !
0 cycle_state4 !
0 cycle_state5 !
0 cycle_state6 !
0 cycle_state7 !
0 cycle_state8 !
\ Initialize string containers
0 init_text1 c!
0 init_text2 c!
0 init_text3 c!
0 init_text4 c!
0 init_text5 c!
0 init_text6 c!
0 init_text7 c!
0 init_text8 c!