Annotation of gforth/history.fs, revision 1.79
1.11 pazsan 1: \ command line edit and history support 16oct94py
1.4 pazsan 2:
1.77 anton 3: \ Copyright (C) 1995,2000,2003,2004,2005,2006,2007,2008,2010,2011 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
1.69 anton 9: \ as published by the Free Software Foundation, either version 3
1.8 anton 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
1.69 anton 18: \ along with this program. If not, see http://www.gnu.org/licenses/.
1.8 anton 19:
1.66 anton 20: : ctrl-i ( "<char>" -- c )
21: char toupper $40 xor ;
22:
23: ' ctrl-i
1.11 pazsan 24: :noname
1.66 anton 25: ctrl-i postpone Literal ;
1.12 anton 26: interpret/compile: ctrl ( "<char>" -- ctrl-code )
1.11 pazsan 27:
28: \ command line editing 16oct94py
29:
30: : >string ( span addr pos1 -- span addr pos1 addr2 len )
31: over 3 pick 2 pick chars /string ;
32:
1.27 pazsan 33: : bindkey ( xt key -- ) cells ctrlkeys + ! ;
34:
1.11 pazsan 35: \ history support 16oct94py
36:
1.13 anton 37: 0 Value history \ history file fid
1.4 pazsan 38:
39: 2Variable forward^
40: 2Variable backward^
41: 2Variable end^
42:
1.13 anton 43: : force-open ( addr len -- fid )
1.19 anton 44: 2dup r/w open-file
45: IF
46: drop r/w create-file throw
47: ELSE
48: nip nip
49: THEN ;
1.4 pazsan 50:
1.29 anton 51: s" os-class" environment? [IF] s" unix" str= [ELSE] true [THEN]
1.15 jwilke 52: [IF]
1.16 pazsan 53: : history-file ( -- addr u )
1.14 pazsan 54: s" GFORTHHIST" getenv dup 0= IF
55: 2drop s" ~/.gforth-history"
1.16 pazsan 56: THEN ;
1.15 jwilke 57: [ELSE]
58:
1.16 pazsan 59: : history-dir ( -- addr u )
1.15 jwilke 60: s" TMP" getenv ?dup ?EXIT drop
61: s" TEMP" getenv ?dup ?EXIT drop
62: s" c:/" ;
63:
1.16 pazsan 64: : history-file ( -- addr u )
1.15 jwilke 65: s" GFORTHHIST" getenv ?dup ?EXIT
66: drop
67: history-dir pad place
1.16 pazsan 68: s" /ghist.fs" pad +place pad count ;
69: [THEN]
1.15 jwilke 70:
1.4 pazsan 71: \ moving in history file 16oct94py
72:
1.44 anton 73: defer back-restore ( u -- )
1.55 pazsan 74: defer cur-correct ( addr u -- )
75: ' backspaces IS back-restore
76: ' 2drop IS cur-correct
1.44 anton 77:
1.63 pazsan 78: Variable linew
79: Variable screenw
1.67 anton 80: : linew-off linew off cols screenw ! ;
1.63 pazsan 81:
1.47 pazsan 82: [IFDEF] x-width
1.4 pazsan 83: : clear-line ( max span addr pos1 -- max addr )
1.63 pazsan 84: drop linew @ back-restore over over swap x-width
85: dup spaces back-restore nip linew off ;
1.47 pazsan 86: [ELSE]
87: : clear-line ( max span addr pos1 -- max addr )
88: back-restore over spaces swap back-restore ;
89: [THEN]
1.41 anton 90: \ : clear-tib ( max span addr pos -- max 0 addr 0 false )
91: \ clear-line 0 tuck dup ;
1.4 pazsan 92:
1.32 pazsan 93: : hist-pos ( -- ud ) history file-position drop ( throw ) ;
94: : hist-setpos ( ud -- ) history reposition-file drop ( throw ) ;
1.4 pazsan 95:
1.7 pazsan 96: : get-line ( addr len -- len' flag )
97: swap history read-line throw ;
98:
1.4 pazsan 99: : next-line ( max span addr pos1 -- max span addr pos2 false )
100: clear-line
1.7 pazsan 101: forward^ 2@ 2dup hist-setpos backward^ 2!
102: 2dup get-line drop
103: hist-pos forward^ 2!
1.55 pazsan 104: tuck 2dup type 2dup cur-correct 0 ;
1.4 pazsan 105:
1.20 pazsan 106: : find-prev-line ( max addr -- max span addr pos2 )
107: backward^ 2@ forward^ 2!
1.7 pazsan 108: over 2 + negate s>d backward^ 2@ d+ 0. dmax 2dup hist-setpos
109: BEGIN
110: backward^ 2! 2dup get-line WHILE
111: hist-pos 2dup forward^ 2@ d< WHILE
112: rot drop
1.20 pazsan 113: REPEAT 2drop THEN tuck ;
114:
115: : prev-line ( max span addr pos1 -- max span addr pos2 false )
1.55 pazsan 116: clear-line find-prev-line 2dup type 2dup cur-correct 0 ;
1.4 pazsan 117:
1.41 anton 118: \ Create lfpad #lf c,
1.4 pazsan 119:
120: : (enter) ( max span addr pos1 -- max span addr pos2 true )
1.78 pazsan 121: >r 2dup swap -trailing nip IF
122: end^ 2@ hist-setpos
123: 2dup swap history write-line drop
124: hist-pos 2dup backward^ 2! end^ 2!
125: THEN r> (ret) ;
1.4 pazsan 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:
1.79 ! pazsan 210: Defer at-deltaxy
! 211: : vt100-at-deltaxy ( dx dy -- )
1.71 pazsan 212: over 0< over 0= and IF drop abs backspaces EXIT THEN
213: base @ >r decimal
1.63 pazsan 214: ?dup IF
215: #esc emit '[ emit dup abs 0 .r 0< IF 'A ELSE 'B THEN emit
216: THEN
217: ?dup IF
218: #esc emit '[ emit dup abs 0 .r 0< IF 'D ELSE 'C THEN emit
1.64 pazsan 219: THEN r> base ! ;
1.79 ! pazsan 220: ' vt100-at-deltaxy IS at-deltaxy
1.62 pazsan 221:
1.63 pazsan 222: \ : cygwin? ( -- flag ) s" TERM" getenv s" cygwin" str= ;
223: \ : at-xy? ( -- x y )
224: \ key? drop \ make sure prep_terminal() is executed
225: \ #esc emit ." [6n" 0 0
226: \ BEGIN key dup 'R <> WHILE
227: \ dup '; = IF drop swap ELSE
228: \ dup '0 '9 1+ within IF '0 - swap 10 * + ELSE
229: \ drop THEN THEN
230: \ REPEAT drop 1- swap 1- ;
231: \ : cursor@ ( -- n ) at-xy? screenw @ * + ;
232: \ : cursor! ( n -- ) screenw @ /mod at-xy ;
233: : xcur-correct ( addr u -- ) x-width linew ! ;
1.56 pazsan 234:
1.55 pazsan 235: ' xcur-correct IS cur-correct
236:
1.63 pazsan 237: : xback-restore ( u -- )
1.76 pazsan 238: dup screenw @ mod 0= IF 1- 0 max THEN
239: \ correction for line=screenw, no wraparound then!
1.63 pazsan 240: screenw @ /mod negate swap negate swap at-deltaxy ;
1.39 anton 241: : .rest ( addr pos1 -- addr pos1 )
1.63 pazsan 242: linew @ xback-restore 2dup type 2dup cur-correct ;
1.39 anton 243: : .all ( span addr pos1 -- span addr pos1 )
1.63 pazsan 244: linew @ xback-restore >r 2dup swap type 2dup swap cur-correct r> ;
1.44 anton 245:
1.63 pazsan 246: : xretype ( max span addr pos1 -- max span addr pos1 f )
1.67 anton 247: .all cols screenw @ >r screenw !
1.63 pazsan 248: linew @ screenw @ / linew @ r@ / max
249: screenw @ r> - * 0 max
250: dup spaces linew +! .rest false ;
1.58 pazsan 251:
1.44 anton 252: \ In the following, addr max is the buffer, addr span is the current
253: \ string in the buffer, and pos1 is the cursor position in the buffer.
1.39 anton 254:
1.40 anton 255: : <xins> ( max span addr pos1 xc -- max span addr pos2 )
256: >r 2over r@ xc-size + u< IF ( max span addr pos1 R:xc )
257: rdrop bell EXIT THEN
258: >string over r@ xc-size + swap move
259: 2dup chars + r@ swap r@ xc-size xc!+? 2drop drop
260: r> xc-size >r rot r@ chars + -rot r> chars + ;
261: : (xins) ( max span addr pos1 xc -- max span addr pos2 )
1.64 pazsan 262: <xins> key? 0= IF .all .rest THEN ;
1.40 anton 263: : xback ( max span addr pos1 -- max span addr pos2 f )
264: dup IF over + xchar- over - 0 max .all .rest
1.39 anton 265: ELSE bell THEN 0 ;
1.40 anton 266: : xforw ( max span addr pos1 -- max span addr pos2 f )
1.63 pazsan 267: 2 pick over <> IF over + xc@+ xemit over - ELSE bell THEN
268: 2dup cur-correct 0 ;
1.40 anton 269: : (xdel) ( max span addr pos1 -- max span addr pos2 )
270: over + dup xchar- tuck - >r over -
1.39 anton 271: >string over r@ + -rot move
272: rot r> - -rot ;
1.40 anton 273: : ?xdel ( max span addr pos1 -- max span addr pos2 0 )
1.63 pazsan 274: dup IF (xdel) .all 2 spaces 2 linew +! .rest THEN 0 ;
1.40 anton 275: : <xdel> ( max span addr pos1 -- max span addr pos2 0 )
1.39 anton 276: 2 pick over <>
1.63 pazsan 277: IF xforw drop (xdel) .all 2 spaces 2 linew +! .rest
1.39 anton 278: ELSE bell THEN 0 ;
1.40 anton 279: : xeof 2 pick over or 0= IF bye ELSE <xdel> THEN ;
1.39 anton 280:
1.40 anton 281: : xfirst-pos ( max span addr pos1 -- max span addr 0 0 )
1.39 anton 282: drop 0 .all .rest 0 ;
1.40 anton 283: : xend-pos ( max span addr pos1 -- max span addr span 0 )
1.39 anton 284: drop over .all 0 ;
285:
1.73 pazsan 286: : xclear-rest ( max span addr pos -- max pos addr pos false )
287: rot >r tuck 2dup r> swap /string u8width dup spaces linew +! .all 0 ;
1.39 anton 288:
1.40 anton 289: : (xenter) ( max span addr pos1 -- max span addr pos2 true )
1.78 pazsan 290: >r 2dup swap -trailing nip IF
291: end^ 2@ hist-setpos
292: 2dup swap history write-line drop ( throw ) \ don't worry about errors
293: hist-pos 2dup backward^ 2! end^ 2!
294: THEN r> .all space true ;
1.39 anton 295:
1.40 anton 296: : xkill-expand ( max span addr pos1 -- max span addr pos2 )
1.39 anton 297: prefix-found cell+ @ ?dup IF >r
298: r@ - >string over r@ + -rot move
1.63 pazsan 299: rot r@ - -rot .all r@ spaces r> back-restore .rest THEN ;
1.39 anton 300:
1.75 pazsan 301: [IFUNDEF] insert
1.39 anton 302: : insert ( string length buffer size -- )
303: rot over min >r r@ - ( left over )
304: over dup r@ + rot move r> move ;
1.75 pazsan 305: [THEN]
1.39 anton 306:
1.40 anton 307: : xtab-expand ( max span addr pos1 -- max span addr pos2 0 )
308: key? IF #tab (xins) 0 EXIT THEN
309: xkill-expand 2dup extract-word dup 0= IF nip EXIT THEN
1.39 anton 310: search-prefix tib-full?
1.40 anton 311: IF bell 2drop prefix-off
1.39 anton 312: ELSE dup >r
313: 2>r >string r@ + 2r> 2swap insert
314: r@ + rot r> + -rot
315: THEN
1.40 anton 316: prefix-found @ IF bl (xins) ELSE .all .rest THEN 0 ;
1.39 anton 317:
1.40 anton 318: : xchar-history ( -- )
319: ['] xforw ctrl F bindkey
320: ['] xback ctrl B bindkey
321: ['] ?xdel ctrl H bindkey
322: ['] xeof ctrl D bindkey
323: ['] <xdel> ctrl X bindkey
1.73 pazsan 324: ['] xclear-rest ctrl K bindkey
1.40 anton 325: ['] xfirst-pos ctrl A bindkey
326: ['] xend-pos ctrl E bindkey
1.61 pazsan 327: ['] xretype ctrl L bindkey
1.49 pazsan 328: history IF ['] (xenter) #lf bindkey THEN
329: history IF ['] (xenter) #cr bindkey THEN
1.40 anton 330: ['] xtab-expand #tab bindkey
331: ['] (xins) IS insert-char
1.39 anton 332: ['] kill-prefix IS everychar
1.70 anton 333: [ifdef] everyline
1.63 pazsan 334: ['] linew-off IS everyline
1.70 anton 335: [endif]
1.44 anton 336: ['] xback-restore IS back-restore
1.55 pazsan 337: ['] xcur-correct IS cur-correct
1.44 anton 338: ;
1.39 anton 339:
1.40 anton 340: xchar-history
1.19 anton 341:
342: \ initializing history
343:
344: : get-history ( addr len -- )
345: ['] force-open catch
346: ?dup-if
347: \ !! >stderr
1.21 pazsan 348: \ history-file type ." : " .error cr
1.49 pazsan 349: drop 2drop 0 to history
1.19 anton 350: ['] false ['] false ['] (ret)
351: else
352: to history
353: history file-size throw
354: 2dup forward^ 2! 2dup backward^ 2! end^ 2!
355: ['] next-line ['] prev-line ['] (enter)
356: endif
1.27 pazsan 357: dup #lf bindkey
358: #cr bindkey
359: ctrl P bindkey
360: ctrl N bindkey
1.19 anton 361: ;
362:
363: : history-cold ( -- )
1.42 pazsan 364: history-file get-history xchar-history ;
1.19 anton 365:
1.48 anton 366: :noname ( -- )
367: defers 'cold
368: history-cold
369: ; is 'cold
370:
1.19 anton 371: history-cold
372:
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