Diff for /gforth/history.fs between versions 1.18 and 1.20

version 1.18, 1999/12/12 12:49:51 version 1.20, 2000/04/02 20:18:27
Line 63  interpret/compile: ctrl  ( "<char>" -- c Line 63  interpret/compile: ctrl  ( "<char>" -- c
 2Variable end^  2Variable end^
   
 : force-open ( addr len -- fid )  : force-open ( addr len -- fid )
   2dup r/w open-file 0<      2dup r/w open-file
   IF  drop r/w create-file      IF
       throw ELSE  nip nip  THEN ;          drop r/w create-file throw
       ELSE
           nip nip
       THEN ;
   
 s" os-class" environment? [IF] s" unix" compare 0= [ELSE] true [THEN]   s" os-class" environment? [IF] s" unix" compare 0= [ELSE] true [THEN] 
 [IF]  [IF]
Line 87  s" os-class" environment? [IF] s" unix" Line 90  s" os-class" environment? [IF] s" unix"
   s" /ghist.fs" pad +place pad count ;    s" /ghist.fs" pad +place pad count ;
 [THEN]  [THEN]
   
 : get-history ( addr len -- )  
     ['] force-open catch  
     dup 0< IF  ." can't open " history-file type cr throw  THEN  drop  
     to history  
     history file-size throw  
     2dup forward^ 2! 2dup backward^ 2! end^ 2! ;  
   
 : history-cold ( -- )  
     history-file get-history ;  
   
 ' history-cold INIT8 chained  
 history-cold  
   
 \ moving in history file                               16oct94py  \ moving in history file                               16oct94py
   
 : clear-line ( max span addr pos1 -- max addr )  : clear-line ( max span addr pos1 -- max addr )
Line 121  history-cold Line 111  history-cold
   hist-pos  forward^ 2!    hist-pos  forward^ 2!
   tuck 2dup type 0 ;    tuck 2dup type 0 ;
   
 : prev-line  ( max span addr pos1 -- max span addr pos2 false )  : find-prev-line ( max addr -- max span addr pos2 )
   clear-line  backward^ 2@ forward^ 2!    backward^ 2@ forward^ 2!
   over 2 + negate s>d backward^ 2@ d+ 0. dmax 2dup hist-setpos    over 2 + negate s>d backward^ 2@ d+ 0. dmax 2dup hist-setpos
   BEGIN    BEGIN
       backward^ 2!   2dup get-line  WHILE        backward^ 2!   2dup get-line  WHILE
       hist-pos 2dup forward^ 2@ d<  WHILE        hist-pos 2dup forward^ 2@ d<  WHILE
       rot drop        rot drop
   REPEAT  2drop  THEN    REPEAT  2drop  THEN  tuck ;
   tuck 2dup type 0 ;  
   : prev-line  ( max span addr pos1 -- max span addr pos2 false )
       clear-line find-prev-line 2dup type 0 ;
   
 Create lfpad #lf c,  Create lfpad #lf c,
   
Line 231  Create prefix-found  0 , 0 , Line 223  Create prefix-found  0 , 0 ,
 ' (enter)    #lf    cells ctrlkeys + !  ' (enter)    #lf    cells ctrlkeys + !
 ' (enter)    #cr    cells ctrlkeys + !  ' (enter)    #cr    cells ctrlkeys + !
 ' tab-expand #tab   cells ctrlkeys + !  ' tab-expand #tab   cells ctrlkeys + !
   
   \ initializing history
   
   : get-history ( addr len -- )
       ['] force-open catch
       ?dup-if
           \ !! >stderr
           history-file type ." : " .error cr 2drop
           ['] false ['] false ['] (ret)
       else
           to history
           history file-size throw
           2dup forward^ 2! 2dup backward^ 2! end^ 2!
           ['] next-line ['] prev-line ['] (enter)
       endif
       dup
       [ #lf    cells ctrlkeys + ]L !
       [ #cr    cells ctrlkeys + ]L !
       [ ctrl P cells ctrlkeys + ]L !
       [ ctrl N cells ctrlkeys + ]L !
   ;
   
   : history-cold ( -- )
       history-file get-history ;
   
   ' history-cold INIT8 chained
   history-cold
   

Removed from v.1.18  
changed lines
  Added in v.1.20


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