Annotation of gforth/history.fs, revision 1.76
1.11 pazsan 1: \ command line edit and history support 16oct94py
1.4 pazsan 2:
1.74 anton 3: \ Copyright (C) 1995,2000,2003,2004,2005,2006,2007,2008,2010 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 )
1.7 pazsan 121: >r end^ 2@ hist-setpos
1.32 pazsan 122: 2dup swap history write-line drop ( throw ) \ don't worry about errors
1.7 pazsan 123: hist-pos 2dup backward^ 2! end^ 2!
1.4 pazsan 124: r> (ret) ;
125:
126: : extract-word ( addr len -- addr' len' ) dup >r
127: BEGIN 1- dup 0>= WHILE 2dup + c@ bl = UNTIL THEN 1+
128: tuck + r> rot - ;
129:
130: Create prefix-found 0 , 0 ,
131:
1.30 anton 132: : sgn ( n -- -1/0/1 )
133: dup 0= IF EXIT THEN 0< 2* 1+ ;
134:
135: : capscomp ( c_addr1 u c_addr2 -- n )
136: swap bounds
137: ?DO dup c@ I c@ <>
138: IF dup c@ toupper I c@ toupper =
139: ELSE true THEN WHILE 1+ LOOP drop 0
140: ELSE c@ toupper I c@ toupper - unloop THEN sgn ;
141:
1.4 pazsan 142: : word-lex ( nfa1 nfa2 -- -1/0/1 )
1.9 anton 143: dup 0=
144: IF
145: 2drop 1 EXIT
146: THEN
147: name>string 2>r name>string
148: dup r@ =
149: IF
150: rdrop r> capscomp 0<= EXIT
151: THEN
152: r> <
153: nip rdrop ;
1.4 pazsan 154:
1.9 anton 155: : search-voc ( addr len nfa1 nfa2 -- addr len nfa3 )
156: >r
157: BEGIN
158: dup
159: WHILE
160: >r dup r@ name>string nip <=
161: IF
162: 2dup r@ name>string drop capscomp 0=
163: IF
164: r> dup r@ word-lex
165: IF
166: dup prefix-found @ word-lex
167: 0>=
168: IF
169: rdrop dup >r
170: THEN
171: THEN
172: >r
1.7 pazsan 173: THEN
1.9 anton 174: THEN
175: r> @
176: REPEAT
177: drop r> ;
1.7 pazsan 178:
1.35 pazsan 179: : prefix-off ( -- ) 0 0 prefix-found 2! ;
180:
1.7 pazsan 181: : prefix-string ( addr len nfa -- addr' len' )
182: dup prefix-found ! ?dup
1.9 anton 183: IF
184: name>string rot /string rot drop
1.7 pazsan 185: dup 1+ prefix-found cell+ !
186: ELSE
1.35 pazsan 187: 2drop s" " prefix-off
1.7 pazsan 188: THEN ;
189:
190: : search-prefix ( addr1 len1 -- addr2 len2 )
191: 0 vp dup @ 1- cells over +
192: DO I 2@ <>
1.17 pazsan 193: IF I cell+ @ wordlist-id @ swap search-voc THEN
1.7 pazsan 194: [ -1 cells ] Literal +LOOP
195: prefix-string ;
196:
197: : tib-full? ( max span addr pos addr' len' -- max span addr pos addr1 u flag )
198: 5 pick over 4 pick + prefix-found @ 0<> - < ;
1.4 pazsan 199:
200: : kill-prefix ( key -- key )
1.36 pazsan 201: dup #tab <> IF prefix-off THEN ;
1.33 pazsan 202:
203: \ UTF-8 support
204:
1.38 anton 205: require utf-8.fs
1.33 pazsan 206:
1.39 anton 207: [IFUNDEF] #esc 27 Constant #esc [THEN]
208:
1.71 pazsan 209: : at-deltaxy ( dx dy -- )
210: over 0< over 0= and IF drop abs backspaces EXIT THEN
211: base @ >r decimal
1.63 pazsan 212: ?dup IF
213: #esc emit '[ emit dup abs 0 .r 0< IF 'A ELSE 'B THEN emit
214: THEN
215: ?dup IF
216: #esc emit '[ emit dup abs 0 .r 0< IF 'D ELSE 'C THEN emit
1.64 pazsan 217: THEN r> base ! ;
1.62 pazsan 218:
1.63 pazsan 219: \ : cygwin? ( -- flag ) s" TERM" getenv s" cygwin" str= ;
220: \ : at-xy? ( -- x y )
221: \ key? drop \ make sure prep_terminal() is executed
222: \ #esc emit ." [6n" 0 0
223: \ BEGIN key dup 'R <> WHILE
224: \ dup '; = IF drop swap ELSE
225: \ dup '0 '9 1+ within IF '0 - swap 10 * + ELSE
226: \ drop THEN THEN
227: \ REPEAT drop 1- swap 1- ;
228: \ : cursor@ ( -- n ) at-xy? screenw @ * + ;
229: \ : cursor! ( n -- ) screenw @ /mod at-xy ;
230: : xcur-correct ( addr u -- ) x-width linew ! ;
1.56 pazsan 231:
1.55 pazsan 232: ' xcur-correct IS cur-correct
233:
1.63 pazsan 234: : xback-restore ( u -- )
1.76 ! pazsan 235: dup screenw @ mod 0= IF 1- 0 max THEN
! 236: \ correction for line=screenw, no wraparound then!
1.63 pazsan 237: screenw @ /mod negate swap negate swap at-deltaxy ;
1.39 anton 238: : .rest ( addr pos1 -- addr pos1 )
1.63 pazsan 239: linew @ xback-restore 2dup type 2dup cur-correct ;
1.39 anton 240: : .all ( span addr pos1 -- span addr pos1 )
1.63 pazsan 241: linew @ xback-restore >r 2dup swap type 2dup swap cur-correct r> ;
1.44 anton 242:
1.63 pazsan 243: : xretype ( max span addr pos1 -- max span addr pos1 f )
1.67 anton 244: .all cols screenw @ >r screenw !
1.63 pazsan 245: linew @ screenw @ / linew @ r@ / max
246: screenw @ r> - * 0 max
247: dup spaces linew +! .rest false ;
1.58 pazsan 248:
1.44 anton 249: \ In the following, addr max is the buffer, addr span is the current
250: \ string in the buffer, and pos1 is the cursor position in the buffer.
1.39 anton 251:
1.40 anton 252: : <xins> ( max span addr pos1 xc -- max span addr pos2 )
253: >r 2over r@ xc-size + u< IF ( max span addr pos1 R:xc )
254: rdrop bell EXIT THEN
255: >string over r@ xc-size + swap move
256: 2dup chars + r@ swap r@ xc-size xc!+? 2drop drop
257: r> xc-size >r rot r@ chars + -rot r> chars + ;
258: : (xins) ( max span addr pos1 xc -- max span addr pos2 )
1.64 pazsan 259: <xins> key? 0= IF .all .rest THEN ;
1.40 anton 260: : xback ( max span addr pos1 -- max span addr pos2 f )
261: dup IF over + xchar- over - 0 max .all .rest
1.39 anton 262: ELSE bell THEN 0 ;
1.40 anton 263: : xforw ( max span addr pos1 -- max span addr pos2 f )
1.63 pazsan 264: 2 pick over <> IF over + xc@+ xemit over - ELSE bell THEN
265: 2dup cur-correct 0 ;
1.40 anton 266: : (xdel) ( max span addr pos1 -- max span addr pos2 )
267: over + dup xchar- tuck - >r over -
1.39 anton 268: >string over r@ + -rot move
269: rot r> - -rot ;
1.40 anton 270: : ?xdel ( max span addr pos1 -- max span addr pos2 0 )
1.63 pazsan 271: dup IF (xdel) .all 2 spaces 2 linew +! .rest THEN 0 ;
1.40 anton 272: : <xdel> ( max span addr pos1 -- max span addr pos2 0 )
1.39 anton 273: 2 pick over <>
1.63 pazsan 274: IF xforw drop (xdel) .all 2 spaces 2 linew +! .rest
1.39 anton 275: ELSE bell THEN 0 ;
1.40 anton 276: : xeof 2 pick over or 0= IF bye ELSE <xdel> THEN ;
1.39 anton 277:
1.40 anton 278: : xfirst-pos ( max span addr pos1 -- max span addr 0 0 )
1.39 anton 279: drop 0 .all .rest 0 ;
1.40 anton 280: : xend-pos ( max span addr pos1 -- max span addr span 0 )
1.39 anton 281: drop over .all 0 ;
282:
1.73 pazsan 283: : xclear-rest ( max span addr pos -- max pos addr pos false )
284: rot >r tuck 2dup r> swap /string u8width dup spaces linew +! .all 0 ;
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:
1.75 pazsan 297: [IFUNDEF] insert
1.39 anton 298: : insert ( string length buffer size -- )
299: rot over min >r r@ - ( left over )
300: over dup r@ + rot move r> move ;
1.75 pazsan 301: [THEN]
1.39 anton 302:
1.40 anton 303: : xtab-expand ( max span addr pos1 -- max span addr pos2 0 )
304: key? IF #tab (xins) 0 EXIT THEN
305: xkill-expand 2dup extract-word dup 0= IF nip EXIT THEN
1.39 anton 306: search-prefix tib-full?
1.40 anton 307: IF bell 2drop prefix-off
1.39 anton 308: ELSE dup >r
309: 2>r >string r@ + 2r> 2swap insert
310: r@ + rot r> + -rot
311: THEN
1.40 anton 312: prefix-found @ IF bl (xins) ELSE .all .rest THEN 0 ;
1.39 anton 313:
1.40 anton 314: : xchar-history ( -- )
315: ['] xforw ctrl F bindkey
316: ['] xback ctrl B bindkey
317: ['] ?xdel ctrl H bindkey
318: ['] xeof ctrl D bindkey
319: ['] <xdel> ctrl X bindkey
1.73 pazsan 320: ['] xclear-rest ctrl K bindkey
1.40 anton 321: ['] xfirst-pos ctrl A bindkey
322: ['] xend-pos ctrl E bindkey
1.61 pazsan 323: ['] xretype ctrl L bindkey
1.49 pazsan 324: history IF ['] (xenter) #lf bindkey THEN
325: history IF ['] (xenter) #cr bindkey THEN
1.40 anton 326: ['] xtab-expand #tab bindkey
327: ['] (xins) IS insert-char
1.39 anton 328: ['] kill-prefix IS everychar
1.70 anton 329: [ifdef] everyline
1.63 pazsan 330: ['] linew-off IS everyline
1.70 anton 331: [endif]
1.44 anton 332: ['] xback-restore IS back-restore
1.55 pazsan 333: ['] xcur-correct IS cur-correct
1.44 anton 334: ;
1.39 anton 335:
1.40 anton 336: xchar-history
1.19 anton 337:
338: \ initializing history
339:
340: : get-history ( addr len -- )
341: ['] force-open catch
342: ?dup-if
343: \ !! >stderr
1.21 pazsan 344: \ history-file type ." : " .error cr
1.49 pazsan 345: drop 2drop 0 to history
1.19 anton 346: ['] false ['] false ['] (ret)
347: else
348: to history
349: history file-size throw
350: 2dup forward^ 2! 2dup backward^ 2! end^ 2!
351: ['] next-line ['] prev-line ['] (enter)
352: endif
1.27 pazsan 353: dup #lf bindkey
354: #cr bindkey
355: ctrl P bindkey
356: ctrl N bindkey
1.19 anton 357: ;
358:
359: : history-cold ( -- )
1.42 pazsan 360: history-file get-history xchar-history ;
1.19 anton 361:
1.48 anton 362: :noname ( -- )
363: defers 'cold
364: history-cold
365: ; is 'cold
366:
1.19 anton 367: history-cold
368:
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