Diff for /gforth/history.fs between versions 1.11 and 1.20

version 1.11, 1996/07/16 20:57:10 version 1.20, 2000/04/02 20:18:27
Line 22 Line 22
     char [char] @ - ;      char [char] @ - ;
 :noname  :noname
     char [char] @ - postpone Literal ;      char [char] @ - postpone Literal ;
 special: ctrl  ( "<char>" -- ctrl-code )  interpret/compile: ctrl  ( "<char>" -- ctrl-code )
   
 \ command line editing                                  16oct94py  \ command line editing                                  16oct94py
   
Line 56  special: ctrl  ( "<char>" -- ctrl-code ) Line 56  special: ctrl  ( "<char>" -- ctrl-code )
   
 \ history support                                       16oct94py  \ history support                                       16oct94py
   
 0 Value history  0 Value history \ history file fid
   
 2Variable forward^  2Variable forward^
 2Variable backward^  2Variable backward^
 2Variable end^  2Variable end^
   
 : force-open ( addr len -- handle )  : force-open ( addr len -- fid )
   2dup r/w open-file 0<      2dup r/w open-file
   IF  drop r/w create-file throw  ELSE  nip nip  THEN ;      IF
           drop r/w create-file throw
 : get-history ( addr len -- wid )      ELSE
   force-open to history          nip nip
   history file-size throw      THEN ;
   2dup forward^ 2! 2dup backward^ 2! end^ 2! ;  
   
 s" ~/.gforth-history" get-history  
   
 : history-cold  
     Defers 'cold  
     s" ~/.gforth-history" get-history ;  
   
 ' history-cold IS 'cold  s" os-class" environment? [IF] s" unix" compare 0= [ELSE] true [THEN] 
   [IF]
   : history-file ( -- addr u )
       s" GFORTHHIST" getenv dup 0= IF
           2drop s" ~/.gforth-history"
       THEN ;
   [ELSE]
   
   : history-dir ( -- addr u )
     s" TMP" getenv ?dup ?EXIT drop
     s" TEMP" getenv ?dup ?EXIT drop
     s" c:/" ;
   
   : history-file ( -- addr u )
     s" GFORTHHIST" getenv ?dup ?EXIT
     drop
     history-dir pad place
     s" /ghist.fs" pad +place pad count ;
   [THEN]
   
 \ moving in history file                               16oct94py  \ moving in history file                               16oct94py
   
Line 100  s" ~/.gforth-history" get-history Line 111  s" ~/.gforth-history" get-history
   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 180  Create prefix-found  0 , 0 , Line 193  Create prefix-found  0 , 0 ,
 : search-prefix  ( addr1 len1 -- addr2 len2 )  : search-prefix  ( addr1 len1 -- addr2 len2 )
     0 vp dup @ 1- cells over +      0 vp dup @ 1- cells over +
     DO  I 2@ <>      DO  I 2@ <>
         IF  I cell+ @ @ swap  search-voc  THEN          IF  I cell+ @ wordlist-id @ swap  search-voc  THEN
         [ -1 cells ] Literal +LOOP          [ -1 cells ] Literal +LOOP
     prefix-string ;      prefix-string ;
   
Line 210  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.1.11  
changed lines
  Added in v.1.20


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