gforth/history.fs - diff

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Diff for /gforth/history.fs between versions 1.38 and 1.39

-version 1.38, 2005/01/05 22:13:40
+version 1.39, 2005/01/10 10:30:55
  Line 246  Create prefix-found  0 , 0 ,
  require utf-8.fs
+ [IFUNDEF] #esc  27 Constant #esc  [THEN]
+ : save-cursor ( -- )  #esc emit '7 emit ;
+ : restore-cursor ( -- )  #esc emit '8 emit ;
+ : .rest ( addr pos1 -- addr pos1 )
+     restore-cursor 2dup type ;
+ : .all ( span addr pos1 -- span addr pos1 )
+     restore-cursor >r 2dup swap type r> ;
+ : <u8ins>  ( max span addr pos1 u8char -- max span addr pos2 )
+     >r  2over r@ u8len + u< IF  rdrop bell  EXIT  THEN
+     >string over r@ u8len + swap move 2dup chars + r@ swap u8!+ drop
+     r> u8len >r  rot r@ chars + -rot r> chars + ;
+ : (u8ins)  ( max span addr pos1 u8char -- max span addr pos2 )
+     <u8ins> .all .rest ;
+ : u8back  ( max span addr pos1 -- max span addr pos2 f )
+     dup  IF  over + u8<< over -  0 max .all .rest
+     ELSE  bell  THEN 0 ;
+ : u8forw  ( max span addr pos1 -- max span addr pos2 f )
+pick over <> IF  over + u8@+ u8emit over -  ELSE  bell  THEN 0 ;
+ : (u8del)  ( max span addr pos1 -- max span addr pos2 )
+     over + dup u8<< tuck - >r over -
+     >string over r@ + -rot move
+     rot r> - -rot ;
+ : ?u8del ( max span addr pos1 -- max span addr pos2 0 )
+   dup  IF  (u8del) .all 2 spaces .rest  THEN  0 ;
+ : <u8del> ( max span addr pos1 -- max span addr pos2 0 )
+pick over <>
+     IF  u8forw drop (u8del) .all 2 spaces .rest
+     ELSE  bell  THEN  0 ;
+ : u8eof  2 pick over or 0=  IF  bye  ELSE  <u8del>  THEN ;
+ : u8first-pos  ( max span addr pos1 -- max span addr 0 0 )
+   drop 0 .all .rest 0 ;
+ : u8end-pos  ( max span addr pos1 -- max span addr span 0 )
+   drop over .all 0 ;
+ : u8clear-line ( max span addr pos1 -- max addr )
+     drop restore-cursor swap spaces restore-cursor ;
+ : u8clear-tib ( max span addr pos -- max 0 addr 0 false )
+     u8clear-line 0 tuck dup ;
+ : (u8enter)  ( max span addr pos1 -- max span addr pos2 true )
+     >r end^ 2@ hist-setpos
+dup swap history write-line drop ( throw ) \ don't worry about errors
+     hist-pos 2dup backward^ 2! end^ 2!
+     r> .all space true ;
+ : u8kill-expand ( max span addr pos1 -- max span addr pos2 )
+     prefix-found cell+ @ ?dup IF  >r
+         r@ - >string over r@ + -rot move
+         rot r@ - -rot .all r> spaces .rest THEN ;
+ : insert   ( string length buffer size -- )
+     rot over min >r  r@ - ( left over )
+     over dup r@ +  rot move   r> move  ;
+ : u8tab-expand ( max span addr pos1 -- max span addr pos2 0 )
+     key? IF  #tab (u8ins) 0  EXIT  THEN
+     u8kill-expand 2dup extract-word dup 0= IF  nip EXIT  THEN
+     search-prefix tib-full?
+     IF    7 emit  2drop  prefix-off
+     ELSE  dup >r
+>r >string r@ + 2r> 2swap insert
+         r@ + rot r> + -rot
+     THEN
+     prefix-found @ IF  bl (u8ins)  ELSE  .all .rest  THEN  0 ;
+ : utf-8-io ( -- )
+     ['] u8forw       ctrl F bindkey
+     ['] u8back       ctrl B bindkey
+     ['] ?u8del       ctrl H bindkey
+     ['] u8eof        ctrl D bindkey
+     ['] <u8del>      ctrl X bindkey
+     ['] u8clear-tib  ctrl K bindkey
+     ['] u8first-pos  ctrl A bindkey
+     ['] u8end-pos    ctrl E bindkey
+     ['] (u8enter)    #lf    bindkey
+     ['] (u8enter)    #cr    bindkey
+     ['] u8tab-expand #tab   bindkey
+     ['] (u8ins)      IS insert-char
+     ['] kill-prefix  IS everychar
+     ['] save-cursor  IS everyline
+     ['] u8key        IS key
+     ['] u8emit       IS emit ;
  : utf-8-cold ( -- )
      s" LANG" getenv s" .UTF-8" search nip nip
      IF  utf-8-io  ELSE  8-bit-io  THEN ;

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Removed from v.1.38
changed lines
	Added in v.1.39