1 \ Copyright (c) 2003 Scott Long <scottl@FreeBSD.org>
2 \ Copyright (c) 2003 Aleksander Fafula <alex@fafula.com>
3 \ Copyright (c) 2006-2015 Devin Teske <dteske@FreeBSD.org>
6 \ Redistribution and use in source and binary forms, with or without
7 \ modification, are permitted provided that the following conditions
9 \ 1. Redistributions of source code must retain the above copyright
10 \ notice, this list of conditions and the following disclaimer.
11 \ 2. Redistributions in binary form must reproduce the above copyright
12 \ notice, this list of conditions and the following disclaimer in the
13 \ documentation and/or other materials provided with the distribution.
15 \ THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 \ ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 \ IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 \ ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 \ FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 \ DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 \ OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 \ HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 \ LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 \ OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 include /boot/frames.4th
34 f_double \ Set frames to double (see frames.4th). Replace with
35 \ f_single if you want single frames.
36 46 constant dot \ ASCII definition of a period (in decimal)
38 5 constant menu_default_x \ default column position of timeout
39 10 constant menu_default_y \ default row position of timeout msg
40 4 constant menu_timeout_default_x \ default column position of timeout
41 23 constant menu_timeout_default_y \ default row position of timeout msg
42 10 constant menu_timeout_default \ default timeout (in seconds)
44 \ Customize the following values with care
46 1 constant menu_start \ Numerical prefix of first menu item
47 dot constant bullet \ Menu bullet (appears after numerical prefix)
48 5 constant menu_x \ Row position of the menu (from the top)
49 10 constant menu_y \ Column position of the menu (from left side)
52 variable menuidx \ Menu item stack for number prefixes
53 variable menurow \ Menu item stack for positioning
54 variable menubllt \ Menu item bullet
57 variable menuX \ Menu X offset (columns)
58 variable menuY \ Menu Y offset (rows)
70 variable menurebootadded
75 \ Parsing of kernels into menu-items
80 \ Menu timer [count-down] variables
81 variable menu_timeout_enabled \ timeout state (internal use only)
82 variable menu_time \ variable for tracking the passage of time
83 variable menu_timeout \ determined configurable delay duration
84 variable menu_timeout_x \ column position of timeout message
85 variable menu_timeout_y \ row position of timeout message
87 \ Menu initialization status variables
97 \ Boolean option status variables
98 variable toggle_state1
99 variable toggle_state2
100 variable toggle_state3
101 variable toggle_state4
102 variable toggle_state5
103 variable toggle_state6
104 variable toggle_state7
105 variable toggle_state8
107 \ Array option status variables
108 variable cycle_state1
109 variable cycle_state2
110 variable cycle_state3
111 variable cycle_state4
112 variable cycle_state5
113 variable cycle_state6
114 variable cycle_state7
115 variable cycle_state8
117 \ Containers for storing the initial caption text
118 create init_text1 64 allot
119 create init_text2 64 allot
120 create init_text3 64 allot
121 create init_text4 64 allot
122 create init_text5 64 allot
123 create init_text6 64 allot
124 create init_text7 64 allot
125 create init_text8 64 allot
127 \ Containers for parsing kernels into menu-items
128 create kerncapbuf 64 allot
129 create kerndefault 64 allot
130 create kernelsbuf 256 allot
132 : +c! ( N C-ADDR/U K -- C-ADDR/U )
133 3 pick 3 pick ( n c-addr/u k -- n c-addr/u k n c-addr )
134 rot + c! ( n c-addr/u k n c-addr -- n c-addr/u )
135 rot drop ( n c-addr/u -- c-addr/u )
138 : delim? ( C -- BOOL )
139 dup 32 = ( c -- c bool ) \ [sp] space
140 over 9 = or ( c bool -- c bool ) \ [ht] horizontal tab
141 over 10 = or ( c bool -- c bool ) \ [nl] newline
142 over 13 = or ( c bool -- c bool ) \ [cr] carriage return
143 over [char] , = or ( c bool -- c bool ) \ comma
144 swap drop ( c bool -- bool ) \ return boolean
148 : menukeyN ( N -- ADDR ) s" menukeyN" 7 +c! evaluate ;
149 : init_stateN ( N -- ADDR ) s" init_stateN" 10 +c! evaluate ;
150 : toggle_stateN ( N -- ADDR ) s" toggle_stateN" 12 +c! evaluate ;
151 : cycle_stateN ( N -- ADDR ) s" cycle_stateN" 11 +c! evaluate ;
152 : init_textN ( N -- C-ADDR ) s" init_textN" 9 +c! evaluate ;
154 \ Environment variables
155 : kernel[x] ( N -- C-ADDR/U ) s" kernel[x]" 7 +c! ;
156 : menu_init[x] ( N -- C-ADDR/U ) s" menu_init[x]" 10 +c! ;
157 : menu_command[x] ( N -- C-ADDR/U ) s" menu_command[x]" 13 +c! ;
158 : menu_caption[x] ( N -- C-ADDR/U ) s" menu_caption[x]" 13 +c! ;
159 : ansi_caption[x] ( N -- C-ADDR/U ) s" ansi_caption[x]" 13 +c! ;
160 : menu_keycode[x] ( N -- C-ADDR/U ) s" menu_keycode[x]" 13 +c! ;
161 : toggled_text[x] ( N -- C-ADDR/U ) s" toggled_text[x]" 13 +c! ;
162 : toggled_ansi[x] ( N -- C-ADDR/U ) s" toggled_ansi[x]" 13 +c! ;
163 : menu_caption[x][y] ( N M -- C-ADDR/U ) s" menu_caption[x][y]" 16 +c! 13 +c! ;
164 : ansi_caption[x][y] ( N M -- C-ADDR/U ) s" ansi_caption[x][y]" 16 +c! 13 +c! ;
166 : arch-i386? ( -- BOOL ) \ Returns TRUE (-1) on i386, FALSE (0) otherwise.
167 s" arch-i386" environment? dup if
172 \ This function prints a menu item at menuX (row) and menuY (column), returns
173 \ the incremental decimal ASCII value associated with the menu item, and
174 \ increments the cursor position to the next row for the creation of the next
175 \ menu item. This function is called by the menu-create function. You need not
178 : printmenuitem ( menu_item_str -- ascii_keycode )
180 menurow dup @ 1+ swap ! ( increment menurow )
181 menuidx dup @ 1+ swap ! ( increment menuidx )
183 \ Calculate the menuitem row position
186 \ Position the cursor at the menuitem position
187 dup menuX @ swap at-xy
189 \ Print the value of menuidx
195 ."
\e[37m" (
\e[39m )
198 \ Move the cursor forward 1 column
199 dup menuX @ 1+ swap at-xy
201 menubllt @ emit \ Print the menu bullet using the emit function
203 \ Move the cursor to the 3rd column from the current position
204 \ to allow for a space between the numerical prefix and the
206 menuX @ 3 + swap at-xy
208 \ Print the menu caption (we expect a string to be on the stack
209 \ prior to invoking this function)
212 \ Here we will add the ASCII decimal of the numerical prefix
213 \ to the stack (decimal ASCII for `1' is 49) as a "return value"
217 : toggle_menuitem ( N -- N ) \ toggles caption text and internal menuitem state
219 \ ASCII numeral equal to user-selected menu item must be on the stack.
220 \ We do not modify the stack, so the ASCII numeral is left on top.
222 dup init_textN c@ 0= if
223 \ NOTE: no need to check toggle_stateN since the first time we
224 \ are called, we will populate init_textN. Further, we don't
225 \ need to test whether menu_caption[x] (ansi_caption[x] when
226 \ loader_color?=1) is available since we would not have been
227 \ called if the caption was NULL.
229 \ base name of environment variable
230 dup ( n -- n n ) \ key pressed
238 2 pick ( n c-addr/u -- n c-addr/u n )
239 init_textN ( n c-addr/u n -- n c-addr/u c-addr )
241 \ now we have the buffer c-addr on top
242 \ ( followed by c-addr/u of current caption )
244 \ Copy the current caption into our buffer
245 2dup c! -rot \ store strlen at first byte
247 rot 1+ \ bring alt addr to top and increment
248 -rot -rot \ bring buffer addr to top
249 2dup c@ swap c! \ copy current character
250 1+ \ increment buffer addr
251 rot 1- \ bring buffer len to top and decrement
252 dup 0= \ exit loop if buffer len is zero
254 2drop \ buffer len/addr
262 \ Now we are certain to have init_textN populated with the initial
263 \ value of menu_caption[x] (ansi_caption[x] with loader_color enabled).
264 \ We can now use init_textN as the untoggled caption and
265 \ toggled_text[x] (toggled_ansi[x] with loader_color enabled) as the
266 \ toggled caption and store the appropriate value into menu_caption[x]
267 \ (again, ansi_caption[x] with loader_color enabled). Last, we'll
268 \ negate the toggled state so that we reverse the flow on subsequent
271 dup toggle_stateN @ 0= if
272 \ state is OFF, toggle to ON
274 dup ( n -- n n ) \ key pressed
281 \ Assign toggled text to menu caption
282 2 pick ( n c-addr/u -- n c-addr/u n ) \ key pressed
290 \ No toggled text, keep the same caption
291 drop ( n -1 -- n ) \ getenv cruft
294 true \ new value of toggle state var (to be stored later)
296 \ state is ON, toggle to OFF
298 dup init_textN count ( n -- n c-addr/u )
300 \ Assign init_textN text to menu caption
301 2 pick ( n c-addr/u -- n c-addr/u n ) \ key pressed
309 false \ new value of toggle state var (to be stored below)
312 \ now we'll store the new toggle state (on top of stack)
316 : cycle_menuitem ( N -- N ) \ cycles through array of choices for a menuitem
318 \ ASCII numeral equal to user-selected menu item must be on the stack.
319 \ We do not modify the stack, so the ASCII numeral is left on top.
321 dup cycle_stateN dup @ 1+ \ get value and increment
323 \ Before assigning the (incremented) value back to the pointer,
324 \ let's test for the existence of this particular array element.
325 \ If the element exists, we'll store index value and move on.
326 \ Otherwise, we'll loop around to zero and store that.
328 dup 48 + ( n addr k -- n addr k k' )
329 \ duplicate array index and convert to ASCII numeral
331 3 pick swap ( n addr k k' -- n addr k n k' ) \ (n,k') as (x,y)
337 ( n addr k n k' -- n addr k c-addr/u )
339 \ Now test for the existence of our incremented array index in the
340 \ form of $menu_caption[x][y] ($ansi_caption[x][y] with loader_color
341 \ enabled) as set in loader.rc(5), et. al.
344 \ No caption set for this array index. Loop back to zero.
346 drop ( n addr k -1 -- n addr k ) \ getenv cruft
347 drop 0 ( n addr k -- n addr 0 ) \ new value to store later
349 2 pick [char] 0 ( n addr 0 -- n addr 0 n 48 ) \ (n,48) as (x,y)
355 ( n addr 0 n 48 -- n addr 0 c-addr/u )
357 \ Highly unlikely to occur, but to ensure things move
358 \ along smoothly, allocate a temporary NULL string
363 \ At this point, we should have the following on the stack (in order,
364 \ from bottom to top):
366 \ n - Ascii numeral representing the menu choice (inherited)
367 \ addr - address of our internal cycle_stateN variable
368 \ k - zero-based number we intend to store to the above
369 \ c-addr/u - string value we intend to store to menu_caption[x]
370 \ (or ansi_caption[x] with loader_color enabled)
372 \ Let's perform what we need to with the above.
374 \ Assign array value text to menu caption
375 4 pick ( n addr k c-addr/u -- n addr k c-addr/u n )
383 swap ! ( n addr k -- n ) \ update array state variable
386 : acpipresent? ( -- flag ) \ Returns TRUE if ACPI is present, FALSE otherwise
387 s" hint.acpi.0.rsdp" getenv
395 : acpienabled? ( -- flag ) \ Returns TRUE if ACPI is enabled, FALSE otherwise
396 s" hint.acpi.0.disabled" getenv
407 \ This function prints the appropriate menuitem basename to the stack if an
408 \ ACPI option is to be presented to the user, otherwise returns -1. Used
409 \ internally by menu-create, you need not (nor should you) call this directly.
411 : acpimenuitem ( -- C-Addr/U | -1 )
429 menuidx dup @ 1+ swap ! ( increment menuidx )
437 \ This function parses $kernels into variables that are used by the menu to
438 \ display wich kernel to boot when the [overloaded] `boot' word is interpreted.
439 \ Used internally by menu-create, you need not (nor should you) call this
442 : parse-kernels ( N -- ) \ kernidx
443 kernidx ! ( n -- ) \ store provided `x' value
444 [char] 0 kernmenuidx ! \ initialize `y' value for menu_caption[x][y]
446 \ Attempt to get a list of kernels, fall back to sensible default
447 s" kernels" getenv dup -1 = if
449 s" kernel kernel.old"
452 \ Check to see if the user has altered $kernel by comparing it against
453 \ $kernel[N] where N is kernel_state (the actively displayed kernel).
454 s" kernel_state" evaluate @ 48 + s" kernel[N]" 7 +c! getenv
456 s" kernel" getenv dup -1 = if
459 2swap 2over compare 0= if
460 2drop FALSE ( skip below conditional )
461 else \ User has changed $kernel
462 TRUE ( slurp in new value )
464 else \ We haven't yet parsed $kernels into $kernel[N]
465 drop ( getenv cruft )
466 s" kernel" getenv dup -1 = if
469 TRUE ( slurp in initial value )
470 then ( c-addr/u -- c-addr/u c-addr/u,-1 | 0 )
471 if \ slurp new value into kerndefault
472 kerndefault 1+ 0 2swap strcat swap 1- c!
475 \ Clear out existing parsed-kernels
478 dup kernel[x] unsetenv
479 2dup menu_caption[x][y] unsetenv
480 2dup ansi_caption[x][y] unsetenv
485 \ Step through the string until we find the end
487 0 kernlen ! \ initialize length of value
489 \ Skip leading whitespace and/or comma delimiters
492 over c@ delim? ( c-addr/u -- c-addr/u bool )
494 false ( c-addr/u -- c-addr/u bool )
497 1- swap 1+ swap ( c-addr/u -- c-addr'/u' )
499 ( c-addr/u -- c-addr'/u' )
501 dup 0= if \ end of string while eating whitespace
502 2drop ( c-addr/u -- )
503 kernmenuidx @ [char] 0 <> if \ found at least one
507 \ No entries in $kernels; use $kernel instead
508 s" kernel" getenv dup -1 = if
511 dup kernlen ! \ store entire value length as kernlen
513 \ We're still within $kernels parsing toward the end;
514 \ find delimiter/end to determine kernlen
515 2dup ( c-addr/u -- c-addr/u c-addr/u )
518 drop 0 ( break ) \ found delimiter
520 kernlen @ 1+ kernlen ! \ incrememnt
521 1- swap 1+ swap \ c-addr++ u--
524 2drop ( c-addr/u c-addr'/u' -- c-addr/u )
526 \ If this is the first entry, compare it to $kernel
527 \ If different, then insert $kernel beforehand
528 kernmenuidx @ [char] 0 = if
529 over kernlen @ kerndefault count compare if
530 kernelsbuf 0 kerndefault count strcat
531 s" ," strcat 2swap strcat
532 kerndefault count swap drop kernlen !
536 ( c-addr/u -- c-addr'/u' )
538 \ At this point, we should have something on the stack to store
539 \ as the next kernel menu option; start assembling variables
541 over kernlen @ ( c-addr/u -- c-addr/u c-addr/u2 )
543 \ Assign first to kernel[x]
544 2dup kernmenuidx @ kernel[x] setenv
546 \ Assign second to menu_caption[x][y]
547 kerncapbuf 0 s" [K]ernel: " strcat
549 kernidx @ kernmenuidx @ menu_caption[x][y]
552 \ Assign third to ansi_caption[x][y]
553 kerncapbuf 0 s"
\e[1mK
\e[37mernel: " strcat
554 kernmenuidx @ [char] 0 = if
561 kernidx @ kernmenuidx @ ansi_caption[x][y]
564 2drop ( c-addr/u c-addr/u2 -- c-addr/u )
566 kernmenuidx @ 1+ dup kernmenuidx ! [char] 8 > if
567 2drop ( c-addr/u -- ) exit
570 kernlen @ - swap kernlen @ + swap ( c-addr/u -- c-addr'/u' )
574 \ This function goes through the kernels that were discovered by the
575 \ parse-kernels function [above], adding " (# of #)" text to the end of each
579 kernidx @ ( -- x ) dup 0= if exit then
580 [char] 0 s" (Y of Z)" ( x -- x y c-addr/u )
581 kernmenuidx @ -rot 7 +c! \ Replace 'Z' with number of kernels parsed
583 2 pick 1+ -rot 2 +c! \ Replace 'Y' with current ASCII num
585 2over menu_caption[x][y] getenv dup -1 <> if
586 2dup + 1- c@ [char] ) = if
587 2drop \ Already tagged
589 kerncapbuf 0 2swap strcat
591 5 pick 5 pick menu_caption[x][y] setenv
594 drop ( getenv cruft )
597 2over ansi_caption[x][y] getenv dup -1 <> if
598 2dup + 1- c@ [char] ) = if
599 2drop \ Already tagged
601 kerncapbuf 0 2swap strcat
603 5 pick 5 pick ansi_caption[x][y] setenv
606 drop ( getenv cruft )
609 rot 1+ dup [char] 8 > if
610 -rot 2drop TRUE ( break )
618 \ This function creates the list of menu items. This function is called by the
619 \ menu-display function. You need not call it directly.
623 \ Print the frame caption at (x,y)
624 s" loader_menu_title" getenv dup -1 = if
625 drop s" Welcome to FreeBSD"
627 TRUE ( use default alignment )
628 s" loader_menu_title_align" getenv dup -1 <> if
629 2dup s" left" compare-insensitive 0= if ( 1 )
630 2drop ( c-addr/u ) drop ( bool )
632 FALSE ( don't use default alignment )
633 else ( 1 ) 2dup s" right" compare-insensitive 0= if ( 2 )
634 2drop ( c-addr/u ) drop ( bool )
635 menuX @ 42 + 4 - over - menuY @ 1-
636 FALSE ( don't use default alignment )
637 else ( 2 ) 2drop ( c-addr/u ) then ( 1 ) then
639 drop ( getenv cruft )
641 if ( use default center alignement? )
642 menuX @ 19 + over 2 / - menuY @ 1-
646 \ If $menu_init is set, evaluate it (allowing for whole menus to be
647 \ constructed dynamically -- as this function could conceivably set
648 \ the remaining environment variables to construct the menu entirely).
650 s" menu_init" getenv dup -1 <> if
656 \ Print our menu options with respective key/variable associations.
657 \ `printmenuitem' ends by adding the decimal ASCII value for the
658 \ numerical prefix to the stack. We store the value left on the stack
659 \ to the key binding variable for later testing against a character
660 \ captured by the `getkey' function.
662 \ Note that any menu item beyond 9 will have a numerical prefix on the
663 \ screen consisting of the first digit (ie. 1 for the tenth menu item)
664 \ and the key required to activate that menu item will be the decimal
665 \ ASCII of 48 plus the menu item (ie. 58 for the tenth item, aka. `:')
666 \ which is misleading and not desirable.
668 \ Thus, we do not allow more than 8 configurable items on the menu
669 \ (with "Reboot" as the optional ninth and highest numbered item).
672 \ Initialize the ACPI option status.
675 s" menu_acpi" getenv -1 <> if
676 c@ dup 48 > over 57 < and if ( '1' <= c1 <= '8' )
678 arch-i386? if acpipresent? if
680 \ Set menu toggle state to active state
681 \ (required by generic toggle_menuitem)
683 acpienabled? menuacpi @ toggle_stateN !
691 \ Initialize kernel captions after parsing $kernels
694 s" menu_kernel" getenv -1 <> if
695 c@ dup 48 > over 57 < and if ( '1' <= c1 <= '8' )
697 dup parse-kernels tag-kernels
699 \ Get the current cycle state (entry to use)
700 s" kernel_state" evaluate @ 48 + ( n -- n y )
702 \ If state is invalid, reset
703 dup kernmenuidx @ 1- > if
704 drop [char] 0 ( n y -- n 48 )
705 0 s" kernel_state" evaluate !
706 over s" init_kernel" evaluate drop
709 \ Set the current non-ANSI caption
710 2dup swap dup ( n y -- n y y n n )
711 s" set menu_caption[x]=$menu_caption[x][y]"
712 17 +c! 34 +c! 37 +c! evaluate
713 ( n y y n n c-addr/u -- n y )
715 \ Set the current ANSI caption
716 2dup swap dup ( n y -- n y y n n )
717 s" set ansi_caption[x]=$ansi_caption[x][y]"
718 17 +c! 34 +c! 37 +c! evaluate
719 ( n y y n n c-addr/u -- n y )
721 \ Initialize cycle state from stored value
723 s" init_cyclestate" evaluate ( n k -- n )
725 \ Set $kernel to $kernel[y]
726 s" activate_kernel" evaluate ( n -- n )
732 \ Initialize the menu_options visual separator.
735 s" menu_options" getenv -1 <> if
736 c@ dup 48 > over 57 < and if ( '1' <= c1 <= '8' )
743 \ Initialize "Reboot" menu state variable (prevents double-entry)
744 false menurebootadded !
747 1- menuidx ! \ Initialize the starting index for the menu
748 0 menurow ! \ Initialize the starting position for the menu
750 49 \ Iterator start (loop range 49 to 56; ASCII '1' to '8')
752 \ If the "Options:" separator, print it.
753 dup menuoptions @ = if
754 \ Optionally add a reboot option to the menu
755 s" menu_reboot" getenv -1 <> if
757 s" Reboot" printmenuitem menureboot !
758 true menurebootadded !
762 menurow @ 2 + menurow !
765 s" menu_optionstext" getenv dup -1 <> if
772 \ If this is the ACPI menu option, act accordingly.
774 dup acpimenuitem ( n -- n n c-addr/u | n n -1 )
776 13 +c! ( n n c-addr/u -- n c-addr/u )
779 swap drop ( n n -1 -- n -1 )
780 over menu_command[x] unsetenv
783 \ make sure we have not already initialized this item
784 dup init_stateN dup @ 0= if
787 \ If this menuitem has an initializer, run it
807 \ test for environment variable
809 printmenuitem ( c-addr/u -- n )
818 1+ dup 56 > \ add 1 to iterator, continue if less than 57
822 \ Optionally add a reboot option to the menu
823 menurebootadded @ true <> if
824 s" menu_reboot" getenv -1 <> if
825 drop \ no need for the value
826 s" Reboot" \ menu caption (required by printmenuitem)
836 \ Takes a single integer on the stack and updates the timeout display. The
837 \ integer must be between 0 and 9 (we will only update a single digit in the
840 : menu-timeout-update ( N -- )
842 \ Enforce minimum/maximum
843 dup 9 > if drop 9 then
844 dup 0 < if drop 0 then
846 s" Autoboot in N seconds. [Space] to pause" ( n -- n c-addr/u )
849 rot 48 + -rot ( n c-addr/u -- n' c-addr/u ) \ convert to ASCII
850 12 +c! ( n' c-addr/u -- c-addr/u ) \ replace 'N' above
852 menu_timeout_x @ menu_timeout_y @ at-xy \ position cursor
853 type ( c-addr/u -- ) \ print message
855 menu_timeout_x @ menu_timeout_y @ at-xy \ position cursor
856 spaces ( n c-addr/u -- n c-addr ) \ erase message
857 2drop ( n c-addr -- )
860 0 25 at-xy ( position cursor back at bottom-left )
863 \ This function blocks program flow (loops forever) until a key is pressed.
864 \ The key that was pressed is added to the top of the stack in the form of its
865 \ decimal ASCII representation. This function is called by the menu-display
866 \ function. You need not call it directly.
868 : getkey ( -- ascii_keycode )
872 menu_timeout_enabled @ 1 = if
874 seconds ( get current time: -- N )
875 dup menu_time @ <> if ( has time elapsed?: N N N -- N )
877 \ At least 1 second has elapsed since last loop
878 \ so we will decrement our "timeout" (really a
879 \ counter, insuring that we do not proceed too
880 \ fast) and update our timeout display.
882 menu_time ! ( update time record: N -- )
883 menu_timeout @ ( "time" remaining: -- N )
884 dup 0> if ( greater than 0?: N N 0 -- N )
885 1- ( decrement counter: N -- N )
887 ( re-assign: N N Addr -- N )
891 dup 0= swap 0< or if ( N <= 0?: N N -- )
893 0 menu_timeout ! ( 0 Addr -- )
894 0 menu_timeout_enabled ! ( 0 Addr -- )
897 \ update the timer display ( N -- )
898 menu_timeout @ menu-timeout-update
901 \ We've reached the end of the timeout
902 \ (user did not cancel by pressing ANY
905 s" menu_timeout_command" getenv dup
914 \ No [detectable] time has elapsed (in seconds)
920 key? if \ Was a key pressed? (see loader(8))
922 \ An actual key was pressed (if the timeout is running,
923 \ kill it regardless of which key was pressed)
924 menu_timeout @ 0<> if
926 0 menu_timeout_enabled !
928 \ clear screen of timeout message
929 0 menu-timeout-update
932 \ get the key that was pressed and exit (if we
933 \ get a non-zero ASCII code)
940 50 ms \ sleep for 50 milliseconds (see loader(8))
945 : menu-erase ( -- ) \ Erases menu and resets positioning variable to positon 1.
947 \ Clear the screen area associated with the interactive menu
949 2dup at-xy 38 spaces 1+ 2dup at-xy 38 spaces 1+
950 2dup at-xy 38 spaces 1+ 2dup at-xy 38 spaces 1+
951 2dup at-xy 38 spaces 1+ 2dup at-xy 38 spaces 1+
952 2dup at-xy 38 spaces 1+ 2dup at-xy 38 spaces 1+
953 2dup at-xy 38 spaces 1+ 2dup at-xy 38 spaces 1+
954 2dup at-xy 38 spaces 1+ 2dup at-xy 38 spaces
957 \ Reset the starting index and position for the menu
958 menu_start 1- menuidx !
962 \ Erase and redraw the menu. Useful if you change a caption and want to
963 \ update the menu to reflect the new value.
970 \ This function initializes the menu. Call this from your `loader.rc' file
971 \ before calling any other menu-related functions.
975 1- menuidx ! \ Initialize the starting index for the menu
976 0 menurow ! \ Initialize the starting position for the menu
978 \ Assign configuration values
979 s" loader_menu_y" getenv dup -1 = if
980 drop \ no custom row position
983 \ make sure custom position is a number
985 menu_default_y \ or use default
989 s" loader_menu_x" getenv dup -1 = if
990 drop \ no custom column position
993 \ make sure custom position is a number
995 menu_default_x \ or use default
1000 \ Interpret a custom frame type for the menu
1001 TRUE ( draw a box? default yes, but might be altered below )
1002 s" loader_menu_frame" getenv dup -1 = if ( 1 )
1003 drop \ no custom frame type
1004 else ( 1 ) 2dup s" single" compare-insensitive 0= if ( 2 )
1005 f_single ( see frames.4th )
1006 else ( 2 ) 2dup s" double" compare-insensitive 0= if ( 3 )
1007 f_double ( see frames.4th )
1008 else ( 3 ) s" none" compare-insensitive 0= if ( 4 )
1009 drop FALSE \ don't draw a box
1010 ( 4 ) then ( 3 ) then ( 2 ) then ( 1 ) then
1012 42 13 menuX @ 3 - menuY @ 1- box \ Draw frame (w,h,x,y)
1015 0 25 at-xy \ Move cursor to the bottom for output
1018 \ Main function. Call this from your `loader.rc' file.
1020 : menu-display ( -- )
1022 0 menu_timeout_enabled ! \ start with automatic timeout disabled
1024 \ check indication that automatic execution after delay is requested
1025 s" menu_timeout_command" getenv -1 <> if ( Addr C -1 -- | Addr )
1026 drop ( just testing existence right now: Addr -- )
1028 \ initialize state variables
1029 seconds menu_time ! ( store the time we started )
1030 1 menu_timeout_enabled ! ( enable automatic timeout )
1032 \ read custom time-duration (if set)
1033 s" autoboot_delay" getenv dup -1 = if
1034 drop \ no custom duration (remove dup'd bunk -1)
1035 menu_timeout_default \ use default setting
1037 2dup ?number 0= if ( if not a number )
1038 \ disable timeout if "NO", else use default
1039 s" NO" compare-insensitive 0= if
1040 0 menu_timeout_enabled !
1041 0 ( assigned to menu_timeout below )
1043 menu_timeout_default
1048 \ boot immediately if less than zero
1057 menu_timeout ! ( store value on stack from above )
1059 menu_timeout_enabled @ 1 = if
1060 \ read custom column position (if set)
1061 s" loader_menu_timeout_x" getenv dup -1 = if
1062 drop \ no custom column position
1063 menu_timeout_default_x \ use default setting
1065 \ make sure custom position is a number
1067 menu_timeout_default_x \ or use default
1070 menu_timeout_x ! ( store value on stack from above )
1072 \ read custom row position (if set)
1073 s" loader_menu_timeout_y" getenv dup -1 = if
1074 drop \ no custom row position
1075 menu_timeout_default_y \ use default setting
1077 \ make sure custom position is a number
1079 menu_timeout_default_y \ or use default
1082 menu_timeout_y ! ( store value on stack from above )
1088 begin \ Loop forever
1090 0 25 at-xy \ Move cursor to the bottom for output
1091 getkey \ Block here, waiting for a key to be pressed
1094 drop exit \ Caught abort (abnormal return)
1097 \ Boot if the user pressed Enter/Ctrl-M (13) or
1098 \ Ctrl-Enter/Ctrl-J (10)
1099 dup over 13 = swap 10 = or if
1100 drop ( no longer needed )
1102 exit ( pedantic; never reached )
1105 dup menureboot @ = if 0 reboot then
1107 \ Evaluate the decimal ASCII value against known menu item
1108 \ key associations and act accordingly
1110 49 \ Iterator start (loop range 49 to 56; ASCII '1' to '8')
1115 \ Adjust for missing ACPI menuitem on non-i386
1116 arch-i386? true <> menuacpi @ 0<> and if
1117 menuacpi @ over 2dup < -rot = or
1119 ( key >= menuacpi && key < 58: N -- N )
1124 \ Test for the environment variable
1127 \ Execute the stored procedure
1130 \ We expect there to be a non-zero
1131 \ value left on the stack after
1132 \ executing the stored procedure.
1133 \ If so, continue to run, else exit.
1137 drop \ loop iterator
1140 swap \ need iterator on top
1144 \ Re-adjust for missing ACPI menuitem
1145 arch-i386? true <> menuacpi @ 0<> and if
1147 menuacpi @ 1+ over 2dup < -rot = or
1154 swap \ need iterator on top
1158 \ Check for menu keycode shortcut(s)
1183 1+ dup 56 > \ increment iterator
1184 \ continue if less than 57
1186 drop \ loop iterator
1189 again \ Non-operational key was pressed; repeat
1192 \ This function unsets all the possible environment variables associated with
1193 \ creating the interactive menu.
1197 49 \ Iterator start (loop range 49 to 56; ASCII '1' to '8')
1199 dup menu_init[x] unsetenv \ menu initializer
1200 dup menu_command[x] unsetenv \ menu command
1201 dup menu_caption[x] unsetenv \ menu caption
1202 dup ansi_caption[x] unsetenv \ ANSI caption
1203 dup menu_keycode[x] unsetenv \ menu keycode
1204 dup toggled_text[x] unsetenv \ toggle_menuitem caption
1205 dup toggled_ansi[x] unsetenv \ toggle_menuitem ANSI caption
1207 48 \ Iterator start (inner range 48 to 57; ASCII '0' to '9')
1209 \ cycle_menuitem caption and ANSI caption
1210 2dup menu_caption[x][y] unsetenv
1211 2dup ansi_caption[x][y] unsetenv
1214 drop \ inner iterator
1216 0 over menukeyN ! \ used by menu-create, menu-display
1217 0 over init_stateN ! \ used by menu-create
1218 0 over toggle_stateN ! \ used by toggle_menuitem
1219 0 over init_textN c! \ used by toggle_menuitem
1220 0 over cycle_stateN ! \ used by cycle_menuitem
1222 1+ dup 56 > \ increment, continue if less than 57
1226 s" menu_timeout_command" unsetenv \ menu timeout command
1227 s" menu_reboot" unsetenv \ Reboot menu option flag
1228 s" menu_acpi" unsetenv \ ACPI menu option flag
1229 s" menu_kernel" unsetenv \ Kernel menu option flag
1230 s" menu_options" unsetenv \ Options separator flag
1231 s" menu_optionstext" unsetenv \ separator display text
1232 s" menu_init" unsetenv \ menu initializer
1239 \ This function both unsets menu variables and visually erases the menu area
1240 \ in-preparation for another menu.
1249 \ Initialize our menu initialization state variables
1259 \ Initialize our boolean state variables
1269 \ Initialize our array state variables
1279 \ Initialize string containers