[gforth] / gforth / history.fs  

gforth: gforth/history.fs

Diff for /gforth/history.fs between version 1.25 and 1.38

version 1.25, Sat Sep 23 15:06:00 2000 UTC version 1.38, Wed Jan 5 22:13:40 2005 UTC
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 \ command line edit and history support                 16oct94py  \ command line edit and history support                 16oct94py
   
 \ Copyright (C) 1995,2000 Free Software Foundation, Inc.  \ Copyright (C) 1995,2000,2003,2004 Free Software Foundation, Inc.
   
 \ This file is part of Gforth.  \ This file is part of Gforth.
   
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 \ You should have received a copy of the GNU General Public License  \ You should have received a copy of the GNU General Public License
 \ along with this program; if not, write to the Free Software  \ along with this program; if not, write to the Free Software
 \ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
   
 :noname  :noname
     char [char] @ - ;      char [char] @ - ;
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         IF  forw drop (del)  ELSE  #bell emit  THEN  0 ;          IF  forw drop (del)  ELSE  #bell emit  THEN  0 ;
 : eof  2 pick over or 0=  IF  bye  ELSE  <del>  THEN ;  : eof  2 pick over or 0=  IF  bye  ELSE  <del>  THEN ;
   
 ' forw  ctrl F cells ctrlkeys + !  : bindkey ( xt key -- )  cells ctrlkeys + ! ;
 ' back  ctrl B cells ctrlkeys + !  
 ' ?del  ctrl H cells ctrlkeys + !  
 ' eof   ctrl D cells ctrlkeys + !  
 ' <del> ctrl X cells ctrlkeys + !  
   
 ' (ins) IS insert-char  
   
 \ history support                                       16oct94py  \ history support                                       16oct94py
   
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         nip nip          nip nip
     THEN ;      THEN ;
   
 s" os-class" environment? [IF] s" unix" compare 0= [ELSE] true [THEN]  s" os-class" environment? [IF] s" unix" str= [ELSE] true [THEN]
 [IF]  [IF]
 : history-file ( -- addr u )  : history-file ( -- addr u )
     s" GFORTHHIST" getenv dup 0= IF      s" GFORTHHIST" getenv dup 0= IF
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 : clear-tib ( max span addr pos -- max 0 addr 0 false )  : clear-tib ( max span addr pos -- max 0 addr 0 false )
   clear-line 0 tuck dup ;    clear-line 0 tuck dup ;
   
 : hist-pos    ( -- ud )  history file-position throw ;  : hist-pos    ( -- ud )  history file-position drop ( throw ) ;
 : hist-setpos ( ud -- )  history reposition-file throw ;  : hist-setpos ( ud -- )  history reposition-file drop ( throw ) ;
   
 : get-line ( addr len -- len' flag )  : get-line ( addr len -- len' flag )
   swap history read-line throw ;    swap history read-line throw ;
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 : (enter)  ( max span addr pos1 -- max span addr pos2 true )  : (enter)  ( max span addr pos1 -- max span addr pos2 true )
   >r end^ 2@ hist-setpos    >r end^ 2@ hist-setpos
   2dup swap history write-line throw    2dup swap history write-line drop ( throw ) \ don't worry about errors
   hist-pos 2dup backward^ 2! end^ 2!    hist-pos 2dup backward^ 2! end^ 2!
   r> (ret) ;    r> (ret) ;
   
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 Create prefix-found  0 , 0 ,  Create prefix-found  0 , 0 ,
   
   : sgn ( n -- -1/0/1 )
    dup 0= IF EXIT THEN  0< 2* 1+ ;
   
   : capscomp  ( c_addr1 u c_addr2 -- n )
    swap bounds
    ?DO  dup c@ I c@ <>
        IF  dup c@ toupper I c@ toupper =
        ELSE  true  THEN  WHILE  1+  LOOP  drop 0
    ELSE  c@ toupper I c@ toupper - unloop  THEN  sgn ;
   
 : word-lex ( nfa1 nfa2 -- -1/0/1 )  : word-lex ( nfa1 nfa2 -- -1/0/1 )
     dup 0=      dup 0=
     IF      IF
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     REPEAT      REPEAT
     drop r> ;      drop r> ;
   
   : prefix-off ( -- )  0 0 prefix-found 2! ;
   
 : prefix-string ( addr len nfa -- addr' len' )  : prefix-string ( addr len nfa -- addr' len' )
     dup prefix-found !  ?dup      dup prefix-found !  ?dup
     IF      IF
         name>string rot /string rot drop          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-off
     THEN ;      THEN ;
   
 : search-prefix  ( addr1 len1 -- addr2 len2 )  : search-prefix  ( addr1 len1 -- addr2 len2 )
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     5 pick over 4 pick + prefix-found @ 0<> - < ;      5 pick over 4 pick + prefix-found @ 0<> - < ;
   
 : tab-expand ( max span addr pos1 -- max span addr pos2 0 )  : tab-expand ( max span addr pos1 -- max span addr pos2 0 )
       key? IF  #tab (ins) 0  EXIT  THEN
     kill-expand  2dup extract-word dup 0= IF  nip EXIT  THEN      kill-expand  2dup extract-word dup 0= IF  nip EXIT  THEN
     search-prefix  tib-full?      search-prefix  tib-full?
     IF    7 emit  2drop  0 0 prefix-found 2!      IF    7 emit  2drop  0 0 prefix-found 2!
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     prefix-found @ IF  bl (ins)  THEN  0 ;      prefix-found @ IF  bl (ins)  THEN  0 ;
   
 : kill-prefix  ( key -- key )  : kill-prefix  ( key -- key )
   dup #tab <> IF  0 0 prefix-found 2!  THEN ;    dup #tab <> IF  prefix-off  THEN ;
   
 ' kill-prefix IS everychar  [IFUNDEF] everyline defer everyline [THEN]
   
 ' next-line  ctrl N cells ctrlkeys + !  : 8-bit-io ( -- )
 ' prev-line  ctrl P cells ctrlkeys + !      ['] forw        ctrl F bindkey
 ' clear-tib  ctrl K cells ctrlkeys + !      ['] back        ctrl B bindkey
 ' first-pos  ctrl A cells ctrlkeys + !      ['] ?del        ctrl H bindkey
 ' end-pos    ctrl E cells ctrlkeys + !      ['] eof         ctrl D bindkey
 ' (enter)    #lf    cells ctrlkeys + !      ['] <del>       ctrl X bindkey
 ' (enter)    #cr    cells ctrlkeys + !      ['] next-line   ctrl N bindkey
 ' tab-expand #tab   cells ctrlkeys + !      ['] prev-line   ctrl P bindkey
       ['] clear-tib   ctrl K bindkey
       ['] first-pos   ctrl A bindkey
       ['] end-pos     ctrl E bindkey
       ['] (enter)     #lf    bindkey
       ['] (enter)     #cr    bindkey
       ['] tab-expand  #tab   bindkey
       ['] (ins)       IS insert-char
       ['] kill-prefix IS everychar
       ['] noop        IS everyline
       [ action-of key ] Literal IS key
       [ action-of emit ] Literal IS emit ;
   
   \ UTF-8 support
   
   require utf-8.fs
   
   : utf-8-cold ( -- )
       s" LANG" getenv s" .UTF-8" search nip nip
       IF  utf-8-io  ELSE  8-bit-io  THEN ;
   
   ' utf-8-cold INIT8 chained
   
   utf-8-cold
   
 \ initializing history  \ initializing history
   
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         2dup forward^ 2! 2dup backward^ 2! end^ 2!          2dup forward^ 2! 2dup backward^ 2! end^ 2!
         ['] next-line ['] prev-line ['] (enter)          ['] next-line ['] prev-line ['] (enter)
     endif      endif
     dup      dup #lf bindkey
     [ #lf    cells ctrlkeys + ]L !          #cr bindkey
     [ #cr    cells ctrlkeys + ]L !       ctrl P bindkey
     [ ctrl P cells ctrlkeys + ]L !       ctrl N bindkey
     [ ctrl N cells ctrlkeys + ]L !  
 ;  ;
   
 : history-cold ( -- )  : history-cold ( -- )

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  Added in v.1.38
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