Annotation of gforth/history.fs, revision 1.68
1.11 pazsan 1: \ command line edit and history support 16oct94py
1.4 pazsan 2:
1.68 ! anton 3: \ Copyright (C) 1995,2000,2003,2004,2005,2006,2007 Free Software Foundation, Inc.
1.8 anton 4:
5: \ This file is part of Gforth.
6:
7: \ Gforth is free software; you can redistribute it and/or
8: \ modify it under the terms of the GNU General Public License
9: \ as published by the Free Software Foundation; either version 2
10: \ of the License, or (at your option) any later version.
11:
12: \ This program is distributed in the hope that it will be useful,
13: \ but WITHOUT ANY WARRANTY; without even the implied warranty of
14: \ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15: \ GNU General Public License for more details.
16:
17: \ You should have received a copy of the GNU General Public License
18: \ along with this program; if not, write to the Free Software
1.26 anton 19: \ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
1.8 anton 20:
1.66 anton 21: : ctrl-i ( "<char>" -- c )
22: char toupper $40 xor ;
23:
24: ' ctrl-i
1.11 pazsan 25: :noname
1.66 anton 26: ctrl-i postpone Literal ;
1.12 anton 27: interpret/compile: ctrl ( "<char>" -- ctrl-code )
1.11 pazsan 28:
29: \ command line editing 16oct94py
30:
31: : >string ( span addr pos1 -- span addr pos1 addr2 len )
32: over 3 pick 2 pick chars /string ;
33:
1.27 pazsan 34: : bindkey ( xt key -- ) cells ctrlkeys + ! ;
35:
1.11 pazsan 36: \ history support 16oct94py
37:
1.13 anton 38: 0 Value history \ history file fid
1.4 pazsan 39:
40: 2Variable forward^
41: 2Variable backward^
42: 2Variable end^
43:
1.13 anton 44: : force-open ( addr len -- fid )
1.19 anton 45: 2dup r/w open-file
46: IF
47: drop r/w create-file throw
48: ELSE
49: nip nip
50: THEN ;
1.4 pazsan 51:
1.29 anton 52: s" os-class" environment? [IF] s" unix" str= [ELSE] true [THEN]
1.15 jwilke 53: [IF]
1.16 pazsan 54: : history-file ( -- addr u )
1.14 pazsan 55: s" GFORTHHIST" getenv dup 0= IF
56: 2drop s" ~/.gforth-history"
1.16 pazsan 57: THEN ;
1.15 jwilke 58: [ELSE]
59:
1.16 pazsan 60: : history-dir ( -- addr u )
1.15 jwilke 61: s" TMP" getenv ?dup ?EXIT drop
62: s" TEMP" getenv ?dup ?EXIT drop
63: s" c:/" ;
64:
1.16 pazsan 65: : history-file ( -- addr u )
1.15 jwilke 66: s" GFORTHHIST" getenv ?dup ?EXIT
67: drop
68: history-dir pad place
1.16 pazsan 69: s" /ghist.fs" pad +place pad count ;
70: [THEN]
1.15 jwilke 71:
1.4 pazsan 72: \ moving in history file 16oct94py
73:
1.44 anton 74: defer back-restore ( u -- )
1.55 pazsan 75: defer cur-correct ( addr u -- )
76: ' backspaces IS back-restore
77: ' 2drop IS cur-correct
1.44 anton 78:
1.63 pazsan 79: Variable linew
80: Variable screenw
1.67 anton 81: : linew-off linew off cols screenw ! ;
1.63 pazsan 82:
1.47 pazsan 83: [IFDEF] x-width
1.4 pazsan 84: : clear-line ( max span addr pos1 -- max addr )
1.63 pazsan 85: drop linew @ back-restore over over swap x-width
86: dup spaces back-restore nip linew off ;
1.47 pazsan 87: [ELSE]
88: : clear-line ( max span addr pos1 -- max addr )
89: back-restore over spaces swap back-restore ;
90: [THEN]
1.41 anton 91: \ : clear-tib ( max span addr pos -- max 0 addr 0 false )
92: \ clear-line 0 tuck dup ;
1.4 pazsan 93:
1.32 pazsan 94: : hist-pos ( -- ud ) history file-position drop ( throw ) ;
95: : hist-setpos ( ud -- ) history reposition-file drop ( throw ) ;
1.4 pazsan 96:
1.7 pazsan 97: : get-line ( addr len -- len' flag )
98: swap history read-line throw ;
99:
1.4 pazsan 100: : next-line ( max span addr pos1 -- max span addr pos2 false )
101: clear-line
1.7 pazsan 102: forward^ 2@ 2dup hist-setpos backward^ 2!
103: 2dup get-line drop
104: hist-pos forward^ 2!
1.55 pazsan 105: tuck 2dup type 2dup cur-correct 0 ;
1.4 pazsan 106:
1.20 pazsan 107: : find-prev-line ( max addr -- max span addr pos2 )
108: backward^ 2@ forward^ 2!
1.7 pazsan 109: over 2 + negate s>d backward^ 2@ d+ 0. dmax 2dup hist-setpos
110: BEGIN
111: backward^ 2! 2dup get-line WHILE
112: hist-pos 2dup forward^ 2@ d< WHILE
113: rot drop
1.20 pazsan 114: REPEAT 2drop THEN tuck ;
115:
116: : prev-line ( max span addr pos1 -- max span addr pos2 false )
1.55 pazsan 117: clear-line find-prev-line 2dup type 2dup cur-correct 0 ;
1.4 pazsan 118:
1.41 anton 119: \ Create lfpad #lf c,
1.4 pazsan 120:
121: : (enter) ( max span addr pos1 -- max span addr pos2 true )
1.7 pazsan 122: >r end^ 2@ hist-setpos
1.32 pazsan 123: 2dup swap history write-line drop ( throw ) \ don't worry about errors
1.7 pazsan 124: hist-pos 2dup backward^ 2! end^ 2!
1.4 pazsan 125: r> (ret) ;
126:
127: : extract-word ( addr len -- addr' len' ) dup >r
128: BEGIN 1- dup 0>= WHILE 2dup + c@ bl = UNTIL THEN 1+
129: tuck + r> rot - ;
130:
131: Create prefix-found 0 , 0 ,
132:
1.30 anton 133: : sgn ( n -- -1/0/1 )
134: dup 0= IF EXIT THEN 0< 2* 1+ ;
135:
136: : capscomp ( c_addr1 u c_addr2 -- n )
137: swap bounds
138: ?DO dup c@ I c@ <>
139: IF dup c@ toupper I c@ toupper =
140: ELSE true THEN WHILE 1+ LOOP drop 0
141: ELSE c@ toupper I c@ toupper - unloop THEN sgn ;
142:
1.4 pazsan 143: : word-lex ( nfa1 nfa2 -- -1/0/1 )
1.9 anton 144: dup 0=
145: IF
146: 2drop 1 EXIT
147: THEN
148: name>string 2>r name>string
149: dup r@ =
150: IF
151: rdrop r> capscomp 0<= EXIT
152: THEN
153: r> <
154: nip rdrop ;
1.4 pazsan 155:
1.9 anton 156: : search-voc ( addr len nfa1 nfa2 -- addr len nfa3 )
157: >r
158: BEGIN
159: dup
160: WHILE
161: >r dup r@ name>string nip <=
162: IF
163: 2dup r@ name>string drop capscomp 0=
164: IF
165: r> dup r@ word-lex
166: IF
167: dup prefix-found @ word-lex
168: 0>=
169: IF
170: rdrop dup >r
171: THEN
172: THEN
173: >r
1.7 pazsan 174: THEN
1.9 anton 175: THEN
176: r> @
177: REPEAT
178: drop r> ;
1.7 pazsan 179:
1.35 pazsan 180: : prefix-off ( -- ) 0 0 prefix-found 2! ;
181:
1.7 pazsan 182: : prefix-string ( addr len nfa -- addr' len' )
183: dup prefix-found ! ?dup
1.9 anton 184: IF
185: name>string rot /string rot drop
1.7 pazsan 186: dup 1+ prefix-found cell+ !
187: ELSE
1.35 pazsan 188: 2drop s" " prefix-off
1.7 pazsan 189: THEN ;
190:
191: : search-prefix ( addr1 len1 -- addr2 len2 )
192: 0 vp dup @ 1- cells over +
193: DO I 2@ <>
1.17 pazsan 194: IF I cell+ @ wordlist-id @ swap search-voc THEN
1.7 pazsan 195: [ -1 cells ] Literal +LOOP
196: prefix-string ;
197:
198: : tib-full? ( max span addr pos addr' len' -- max span addr pos addr1 u flag )
199: 5 pick over 4 pick + prefix-found @ 0<> - < ;
1.4 pazsan 200:
201: : kill-prefix ( key -- key )
1.36 pazsan 202: dup #tab <> IF prefix-off THEN ;
1.33 pazsan 203:
204: \ UTF-8 support
205:
1.38 anton 206: require utf-8.fs
1.33 pazsan 207:
1.39 anton 208: [IFUNDEF] #esc 27 Constant #esc [THEN]
209:
1.64 pazsan 210: : at-deltaxy ( dx dy -- ) base @ >r decimal
1.63 pazsan 211: ?dup IF
212: #esc emit '[ emit dup abs 0 .r 0< IF 'A ELSE 'B THEN emit
213: THEN
214: ?dup IF
215: #esc emit '[ emit dup abs 0 .r 0< IF 'D ELSE 'C THEN emit
1.64 pazsan 216: THEN r> base ! ;
1.62 pazsan 217:
1.63 pazsan 218: \ : cygwin? ( -- flag ) s" TERM" getenv s" cygwin" str= ;
219: \ : at-xy? ( -- x y )
220: \ key? drop \ make sure prep_terminal() is executed
221: \ #esc emit ." [6n" 0 0
222: \ BEGIN key dup 'R <> WHILE
223: \ dup '; = IF drop swap ELSE
224: \ dup '0 '9 1+ within IF '0 - swap 10 * + ELSE
225: \ drop THEN THEN
226: \ REPEAT drop 1- swap 1- ;
227: \ : cursor@ ( -- n ) at-xy? screenw @ * + ;
228: \ : cursor! ( n -- ) screenw @ /mod at-xy ;
229: : xcur-correct ( addr u -- ) x-width linew ! ;
1.56 pazsan 230:
1.55 pazsan 231: ' xcur-correct IS cur-correct
232:
1.63 pazsan 233: : xback-restore ( u -- )
234: screenw @ /mod negate swap negate swap at-deltaxy ;
1.39 anton 235: : .rest ( addr pos1 -- addr pos1 )
1.63 pazsan 236: linew @ xback-restore 2dup type 2dup cur-correct ;
1.39 anton 237: : .all ( span addr pos1 -- span addr pos1 )
1.63 pazsan 238: linew @ xback-restore >r 2dup swap type 2dup swap cur-correct r> ;
1.44 anton 239:
1.63 pazsan 240: : xretype ( max span addr pos1 -- max span addr pos1 f )
1.67 anton 241: .all cols screenw @ >r screenw !
1.63 pazsan 242: linew @ screenw @ / linew @ r@ / max
243: screenw @ r> - * 0 max
244: dup spaces linew +! .rest false ;
1.58 pazsan 245:
1.44 anton 246: \ In the following, addr max is the buffer, addr span is the current
247: \ string in the buffer, and pos1 is the cursor position in the buffer.
1.39 anton 248:
1.40 anton 249: : <xins> ( max span addr pos1 xc -- max span addr pos2 )
250: >r 2over r@ xc-size + u< IF ( max span addr pos1 R:xc )
251: rdrop bell EXIT THEN
252: >string over r@ xc-size + swap move
253: 2dup chars + r@ swap r@ xc-size xc!+? 2drop drop
254: r> xc-size >r rot r@ chars + -rot r> chars + ;
255: : (xins) ( max span addr pos1 xc -- max span addr pos2 )
1.64 pazsan 256: <xins> key? 0= IF .all .rest THEN ;
1.40 anton 257: : xback ( max span addr pos1 -- max span addr pos2 f )
258: dup IF over + xchar- over - 0 max .all .rest
1.39 anton 259: ELSE bell THEN 0 ;
1.40 anton 260: : xforw ( max span addr pos1 -- max span addr pos2 f )
1.63 pazsan 261: 2 pick over <> IF over + xc@+ xemit over - ELSE bell THEN
262: 2dup cur-correct 0 ;
1.40 anton 263: : (xdel) ( max span addr pos1 -- max span addr pos2 )
264: over + dup xchar- tuck - >r over -
1.39 anton 265: >string over r@ + -rot move
266: rot r> - -rot ;
1.40 anton 267: : ?xdel ( max span addr pos1 -- max span addr pos2 0 )
1.63 pazsan 268: dup IF (xdel) .all 2 spaces 2 linew +! .rest THEN 0 ;
1.40 anton 269: : <xdel> ( max span addr pos1 -- max span addr pos2 0 )
1.39 anton 270: 2 pick over <>
1.63 pazsan 271: IF xforw drop (xdel) .all 2 spaces 2 linew +! .rest
1.39 anton 272: ELSE bell THEN 0 ;
1.40 anton 273: : xeof 2 pick over or 0= IF bye ELSE <xdel> THEN ;
1.39 anton 274:
1.40 anton 275: : xfirst-pos ( max span addr pos1 -- max span addr 0 0 )
1.39 anton 276: drop 0 .all .rest 0 ;
1.40 anton 277: : xend-pos ( max span addr pos1 -- max span addr span 0 )
1.39 anton 278: drop over .all 0 ;
279:
280:
1.40 anton 281: : xclear-line ( max span addr pos1 -- max addr )
1.63 pazsan 282: 2dup x-width dup xback-restore dup spaces xback-restore drop nip ;
1.40 anton 283: : xclear-tib ( max span addr pos -- max 0 addr 0 false )
284: xclear-line 0 tuck dup ;
1.39 anton 285:
1.40 anton 286: : (xenter) ( max span addr pos1 -- max span addr pos2 true )
1.39 anton 287: >r end^ 2@ hist-setpos
288: 2dup swap history write-line drop ( throw ) \ don't worry about errors
289: hist-pos 2dup backward^ 2! end^ 2!
1.63 pazsan 290: r> .all space true ;
1.39 anton 291:
1.40 anton 292: : xkill-expand ( max span addr pos1 -- max span addr pos2 )
1.39 anton 293: prefix-found cell+ @ ?dup IF >r
294: r@ - >string over r@ + -rot move
1.63 pazsan 295: rot r@ - -rot .all r@ spaces r> back-restore .rest THEN ;
1.39 anton 296:
297: : insert ( string length buffer size -- )
298: rot over min >r r@ - ( left over )
299: over dup r@ + rot move r> move ;
300:
1.40 anton 301: : xtab-expand ( max span addr pos1 -- max span addr pos2 0 )
302: key? IF #tab (xins) 0 EXIT THEN
303: xkill-expand 2dup extract-word dup 0= IF nip EXIT THEN
1.39 anton 304: search-prefix tib-full?
1.40 anton 305: IF bell 2drop prefix-off
1.39 anton 306: ELSE dup >r
307: 2>r >string r@ + 2r> 2swap insert
308: r@ + rot r> + -rot
309: THEN
1.40 anton 310: prefix-found @ IF bl (xins) ELSE .all .rest THEN 0 ;
1.39 anton 311:
1.40 anton 312: : xchar-history ( -- )
313: ['] xforw ctrl F bindkey
314: ['] xback ctrl B bindkey
315: ['] ?xdel ctrl H bindkey
316: ['] xeof ctrl D bindkey
317: ['] <xdel> ctrl X bindkey
318: ['] xclear-tib ctrl K bindkey
319: ['] xfirst-pos ctrl A bindkey
320: ['] xend-pos ctrl E bindkey
1.61 pazsan 321: ['] xretype ctrl L bindkey
1.49 pazsan 322: history IF ['] (xenter) #lf bindkey THEN
323: history IF ['] (xenter) #cr bindkey THEN
1.40 anton 324: ['] xtab-expand #tab bindkey
325: ['] (xins) IS insert-char
1.39 anton 326: ['] kill-prefix IS everychar
1.63 pazsan 327: ['] linew-off IS everyline
1.44 anton 328: ['] xback-restore IS back-restore
1.55 pazsan 329: ['] xcur-correct IS cur-correct
1.44 anton 330: ;
1.39 anton 331:
1.40 anton 332: xchar-history
1.19 anton 333:
334: \ initializing history
335:
336: : get-history ( addr len -- )
337: ['] force-open catch
338: ?dup-if
339: \ !! >stderr
1.21 pazsan 340: \ history-file type ." : " .error cr
1.49 pazsan 341: drop 2drop 0 to history
1.19 anton 342: ['] false ['] false ['] (ret)
343: else
344: to history
345: history file-size throw
346: 2dup forward^ 2! 2dup backward^ 2! end^ 2!
347: ['] next-line ['] prev-line ['] (enter)
348: endif
1.27 pazsan 349: dup #lf bindkey
350: #cr bindkey
351: ctrl P bindkey
352: ctrl N bindkey
1.19 anton 353: ;
354:
355: : history-cold ( -- )
1.42 pazsan 356: history-file get-history xchar-history ;
1.19 anton 357:
1.48 anton 358: :noname ( -- )
359: defers 'cold
360: history-cold
361: ; is 'cold
362:
1.19 anton 363: history-cold
364:
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