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Diff for /gforth/history.fs between versions 1.7 and 1.16

version 1.7, 1995/09/06 21:00:17 version 1.16, 1997/12/01 21:15:03
Line 1 Line 1
 \ History file support                                 16oct94py  \ command line edit and history support                 16oct94py
   
 0 Value history  \ Copyright (C) 1995 Free Software Foundation, Inc.
   
   \ This file is part of Gforth.
   
   \ Gforth 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.
   
   :noname
       char [char] @ - ;
   :noname
       char [char] @ - postpone Literal ;
   interpret/compile: ctrl  ( "<char>" -- ctrl-code )
   
   \ command line editing                                  16oct94py
   
   : >string  ( span addr pos1 -- span addr pos1 addr2 len )
     over 3 pick 2 pick chars /string ;
   : type-rest ( span addr pos1 -- span addr pos1 back )
     >string tuck type ;
   : (del)  ( max span addr pos1 -- max span addr pos2 )
     1- >string over 1+ -rot move
     rot 1- -rot  #bs emit  type-rest bl emit 1+ backspaces ;
   : (ins)  ( max span addr pos1 char -- max span addr pos2 )
     >r >string over 1+ swap move 2dup chars + r> swap c!
     rot 1+ -rot type-rest 1- backspaces 1+ ;
   : ?del ( max span addr pos1 -- max span addr pos2 0 )
     dup  IF  (del)  THEN  0 ;
   : (ret)  type-rest drop true space ;
   : back  dup  IF  1- #bs emit  ELSE  #bell emit  THEN 0 ;
   : forw 2 pick over <> IF  2dup + c@ emit 1+  ELSE  #bell emit  THEN 0 ;
   : eof  2 pick over or 0=  IF
           bye
       ELSE  2 pick over <>
           IF  forw drop (del)  ELSE  #bell emit  THEN  0
       THEN ;
   
   ' forw  ctrl F cells ctrlkeys + !
   ' back  ctrl B cells ctrlkeys + !
   ' ?del  ctrl H cells ctrlkeys + !
   ' eof   ctrl D cells ctrlkeys + !
   
   ' (ins) IS insert-char
   
   \ history support                                       16oct94py
   
   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 0<
   IF  drop r/w create-file throw  ELSE  nip nip  THEN ;    IF  drop r/w create-file
         throw  ELSE  nip nip  THEN ;
 : get-history ( addr len -- wid )  
   force-open to history  
   history file-size throw  
   2dup forward^ 2! 2dup backward^ 2! end^ 2! ;  
   
 s" ~/.gforth-history" get-history  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]
   
   : 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-cold ( -- )
     Defers 'cold      history-file get-history ;
     s" ~/.gforth-history" get-history ;  
   
 ' history-cold IS 'cold  ' history-cold INIT8 chained
   history-cold
   
 \ moving in history file                               16oct94py  \ moving in history file                               16oct94py
   
Line 54  s" ~/.gforth-history" get-history Line 131  s" ~/.gforth-history" get-history
   REPEAT  2drop  THEN    REPEAT  2drop  THEN
   tuck 2dup type 0 ;    tuck 2dup type 0 ;
   
 : ctrl  ( "<char>" -- ctrl-code )  
   char [char] @ - postpone Literal ; immediate  
   
 Create lfpad #lf c,  Create lfpad #lf c,
   
 : (enter)  ( max span addr pos1 -- max span addr pos2 true )  : (enter)  ( max span addr pos1 -- max span addr pos2 true )
Line 79  Create lfpad #lf c, Line 153  Create lfpad #lf c,
 Create prefix-found  0 , 0 ,  Create prefix-found  0 , 0 ,
   
 : word-lex ( nfa1 nfa2 -- -1/0/1 )  : word-lex ( nfa1 nfa2 -- -1/0/1 )
   dup 0=  IF  2drop 1  EXIT  THEN      dup 0=
   cell+ >r cell+ count $1F and      IF
   dup r@ c@ $1F and =          2drop 1  EXIT
   IF  r> char+ capscomp 0<=  EXIT  THEN      THEN
   nip r> c@ $1F and < ;      name>string 2>r name>string
       dup r@ =
 : search-voc ( addr len nfa1 nfa2 -- addr len nfa3 ) >r      IF
     BEGIN  dup  WHILE  >r dup r@ cell+ c@ $1F and <=          rdrop r> capscomp 0<= EXIT
         IF  2dup r@ cell+ char+ capscomp  0=      THEN
             IF  r> dup r@ word-lex      r> <
                 IF  dup prefix-found @ word-lex      nip rdrop ;
                     0>= IF  rdrop dup >r  THEN  
                 THEN >r  : search-voc ( addr len nfa1 nfa2 -- addr len nfa3 )
       >r
       BEGIN
           dup
       WHILE
           >r dup r@ name>string nip <=
           IF
               2dup r@ name>string drop capscomp  0=
               IF
                   r> dup r@ word-lex
                   IF
                       dup prefix-found @ word-lex
                       0>=
                       IF
                           rdrop dup >r
                       THEN
                   THEN
                   >r
             THEN              THEN
         THEN  r> @          THEN
     REPEAT drop r> ;          r> @
       REPEAT
       drop r> ;
   
 : prefix-string ( addr len nfa -- addr' len' )  : prefix-string ( addr len nfa -- addr' len' )
     dup prefix-found !  ?dup      dup prefix-found !  ?dup
     IF  cell+ count $1F and rot /string rot drop      IF
           name>string rot /string rot drop
         dup 1+ prefix-found cell+ !          dup 1+ prefix-found cell+ !
     ELSE      ELSE
         2drop s" " prefix-found cell+ off          2drop s" " prefix-found cell+ off
Removed from v.1.7  
changed lines
  Added in v.1.16

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