Annotation of gforth/history.fs, revision 1.64
1.11 pazsan 1: \ command line edit and history support 16oct94py
1.4 pazsan 2:
1.50 anton 3: \ Copyright (C) 1995,2000,2003,2004,2005,2006 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:
1.11 pazsan 21: :noname
22: char [char] @ - ;
23: :noname
24: char [char] @ - postpone Literal ;
1.12 anton 25: interpret/compile: ctrl ( "<char>" -- ctrl-code )
1.11 pazsan 26:
27: \ command line editing 16oct94py
28:
29: : >string ( span addr pos1 -- span addr pos1 addr2 len )
30: over 3 pick 2 pick chars /string ;
31:
1.27 pazsan 32: : bindkey ( xt key -- ) cells ctrlkeys + ! ;
33:
1.11 pazsan 34: \ history support 16oct94py
35:
1.13 anton 36: 0 Value history \ history file fid
1.4 pazsan 37:
38: 2Variable forward^
39: 2Variable backward^
40: 2Variable end^
41:
1.13 anton 42: : force-open ( addr len -- fid )
1.19 anton 43: 2dup r/w open-file
44: IF
45: drop r/w create-file throw
46: ELSE
47: nip nip
48: THEN ;
1.4 pazsan 49:
1.29 anton 50: s" os-class" environment? [IF] s" unix" str= [ELSE] true [THEN]
1.15 jwilke 51: [IF]
1.16 pazsan 52: : history-file ( -- addr u )
1.14 pazsan 53: s" GFORTHHIST" getenv dup 0= IF
54: 2drop s" ~/.gforth-history"
1.16 pazsan 55: THEN ;
1.15 jwilke 56: [ELSE]
57:
1.16 pazsan 58: : history-dir ( -- addr u )
1.15 jwilke 59: s" TMP" getenv ?dup ?EXIT drop
60: s" TEMP" getenv ?dup ?EXIT drop
61: s" c:/" ;
62:
1.16 pazsan 63: : history-file ( -- addr u )
1.15 jwilke 64: s" GFORTHHIST" getenv ?dup ?EXIT
65: drop
66: history-dir pad place
1.16 pazsan 67: s" /ghist.fs" pad +place pad count ;
68: [THEN]
1.15 jwilke 69:
1.4 pazsan 70: \ moving in history file 16oct94py
71:
1.44 anton 72: defer back-restore ( u -- )
1.55 pazsan 73: defer cur-correct ( addr u -- )
74: ' backspaces IS back-restore
75: ' 2drop IS cur-correct
1.44 anton 76:
1.63 pazsan 77: Variable linew
78: Variable screenw
79:
80: : linew-off linew off form nip screenw ! ;
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:
1.64 ! pazsan 209: : at-deltaxy ( dx dy -- ) base @ >r decimal
1.63 pazsan 210: ?dup IF
211: #esc emit '[ emit dup abs 0 .r 0< IF 'A ELSE 'B THEN emit
212: THEN
213: ?dup IF
214: #esc emit '[ emit dup abs 0 .r 0< IF 'D ELSE 'C THEN emit
1.64 ! pazsan 215: THEN r> base ! ;
1.62 pazsan 216:
1.63 pazsan 217: \ : cygwin? ( -- flag ) s" TERM" getenv s" cygwin" str= ;
218: \ : at-xy? ( -- x y )
219: \ key? drop \ make sure prep_terminal() is executed
220: \ #esc emit ." [6n" 0 0
221: \ BEGIN key dup 'R <> WHILE
222: \ dup '; = IF drop swap ELSE
223: \ dup '0 '9 1+ within IF '0 - swap 10 * + ELSE
224: \ drop THEN THEN
225: \ REPEAT drop 1- swap 1- ;
226: \ : cursor@ ( -- n ) at-xy? screenw @ * + ;
227: \ : cursor! ( n -- ) screenw @ /mod at-xy ;
228: : xcur-correct ( addr u -- ) x-width linew ! ;
1.56 pazsan 229:
1.55 pazsan 230: ' xcur-correct IS cur-correct
231:
1.63 pazsan 232: : xback-restore ( u -- )
233: screenw @ /mod negate swap negate swap at-deltaxy ;
1.39 anton 234: : .rest ( addr pos1 -- addr pos1 )
1.63 pazsan 235: linew @ xback-restore 2dup type 2dup cur-correct ;
1.39 anton 236: : .all ( span addr pos1 -- span addr pos1 )
1.63 pazsan 237: linew @ xback-restore >r 2dup swap type 2dup swap cur-correct r> ;
1.44 anton 238:
1.63 pazsan 239: : xretype ( max span addr pos1 -- max span addr pos1 f )
240: .all form nip screenw @ >r screenw !
241: linew @ screenw @ / linew @ r@ / max
242: screenw @ r> - * 0 max
243: dup spaces linew +! .rest false ;
1.58 pazsan 244:
1.44 anton 245: \ In the following, addr max is the buffer, addr span is the current
246: \ string in the buffer, and pos1 is the cursor position in the buffer.
1.39 anton 247:
1.40 anton 248: : <xins> ( max span addr pos1 xc -- max span addr pos2 )
249: >r 2over r@ xc-size + u< IF ( max span addr pos1 R:xc )
250: rdrop bell EXIT THEN
251: >string over r@ xc-size + swap move
252: 2dup chars + r@ swap r@ xc-size xc!+? 2drop drop
253: r> xc-size >r rot r@ chars + -rot r> chars + ;
254: : (xins) ( max span addr pos1 xc -- max span addr pos2 )
1.64 ! pazsan 255: <xins> key? 0= IF .all .rest THEN ;
1.40 anton 256: : xback ( max span addr pos1 -- max span addr pos2 f )
257: dup IF over + xchar- over - 0 max .all .rest
1.39 anton 258: ELSE bell THEN 0 ;
1.40 anton 259: : xforw ( max span addr pos1 -- max span addr pos2 f )
1.63 pazsan 260: 2 pick over <> IF over + xc@+ xemit over - ELSE bell THEN
261: 2dup cur-correct 0 ;
1.40 anton 262: : (xdel) ( max span addr pos1 -- max span addr pos2 )
263: over + dup xchar- tuck - >r over -
1.39 anton 264: >string over r@ + -rot move
265: rot r> - -rot ;
1.40 anton 266: : ?xdel ( max span addr pos1 -- max span addr pos2 0 )
1.63 pazsan 267: dup IF (xdel) .all 2 spaces 2 linew +! .rest THEN 0 ;
1.40 anton 268: : <xdel> ( max span addr pos1 -- max span addr pos2 0 )
1.39 anton 269: 2 pick over <>
1.63 pazsan 270: IF xforw drop (xdel) .all 2 spaces 2 linew +! .rest
1.39 anton 271: ELSE bell THEN 0 ;
1.40 anton 272: : xeof 2 pick over or 0= IF bye ELSE <xdel> THEN ;
1.39 anton 273:
1.40 anton 274: : xfirst-pos ( max span addr pos1 -- max span addr 0 0 )
1.39 anton 275: drop 0 .all .rest 0 ;
1.40 anton 276: : xend-pos ( max span addr pos1 -- max span addr span 0 )
1.39 anton 277: drop over .all 0 ;
278:
279:
1.40 anton 280: : xclear-line ( max span addr pos1 -- max addr )
1.63 pazsan 281: 2dup x-width dup xback-restore dup spaces xback-restore drop nip ;
1.40 anton 282: : xclear-tib ( max span addr pos -- max 0 addr 0 false )
283: xclear-line 0 tuck dup ;
1.39 anton 284:
1.40 anton 285: : (xenter) ( max span addr pos1 -- max span addr pos2 true )
1.39 anton 286: >r end^ 2@ hist-setpos
287: 2dup swap history write-line drop ( throw ) \ don't worry about errors
288: hist-pos 2dup backward^ 2! end^ 2!
1.63 pazsan 289: r> .all space true ;
1.39 anton 290:
1.40 anton 291: : xkill-expand ( max span addr pos1 -- max span addr pos2 )
1.39 anton 292: prefix-found cell+ @ ?dup IF >r
293: r@ - >string over r@ + -rot move
1.63 pazsan 294: rot r@ - -rot .all r@ spaces r> back-restore .rest THEN ;
1.39 anton 295:
296: : insert ( string length buffer size -- )
297: rot over min >r r@ - ( left over )
298: over dup r@ + rot move r> move ;
299:
1.40 anton 300: : xtab-expand ( max span addr pos1 -- max span addr pos2 0 )
301: key? IF #tab (xins) 0 EXIT THEN
302: xkill-expand 2dup extract-word dup 0= IF nip EXIT THEN
1.39 anton 303: search-prefix tib-full?
1.40 anton 304: IF bell 2drop prefix-off
1.39 anton 305: ELSE dup >r
306: 2>r >string r@ + 2r> 2swap insert
307: r@ + rot r> + -rot
308: THEN
1.40 anton 309: prefix-found @ IF bl (xins) ELSE .all .rest THEN 0 ;
1.39 anton 310:
1.40 anton 311: : xchar-history ( -- )
312: ['] xforw ctrl F bindkey
313: ['] xback ctrl B bindkey
314: ['] ?xdel ctrl H bindkey
315: ['] xeof ctrl D bindkey
316: ['] <xdel> ctrl X bindkey
317: ['] xclear-tib ctrl K bindkey
318: ['] xfirst-pos ctrl A bindkey
319: ['] xend-pos ctrl E bindkey
1.61 pazsan 320: ['] xretype ctrl L bindkey
1.49 pazsan 321: history IF ['] (xenter) #lf bindkey THEN
322: history IF ['] (xenter) #cr bindkey THEN
1.40 anton 323: ['] xtab-expand #tab bindkey
324: ['] (xins) IS insert-char
1.39 anton 325: ['] kill-prefix IS everychar
1.63 pazsan 326: ['] linew-off IS everyline
1.44 anton 327: ['] xback-restore IS back-restore
1.55 pazsan 328: ['] xcur-correct IS cur-correct
1.44 anton 329: ;
1.39 anton 330:
1.40 anton 331: xchar-history
1.19 anton 332:
333: \ initializing history
334:
335: : get-history ( addr len -- )
336: ['] force-open catch
337: ?dup-if
338: \ !! >stderr
1.21 pazsan 339: \ history-file type ." : " .error cr
1.49 pazsan 340: drop 2drop 0 to history
1.19 anton 341: ['] false ['] false ['] (ret)
342: else
343: to history
344: history file-size throw
345: 2dup forward^ 2! 2dup backward^ 2! end^ 2!
346: ['] next-line ['] prev-line ['] (enter)
347: endif
1.27 pazsan 348: dup #lf bindkey
349: #cr bindkey
350: ctrl P bindkey
351: ctrl N bindkey
1.19 anton 352: ;
353:
354: : history-cold ( -- )
1.42 pazsan 355: history-file get-history xchar-history ;
1.19 anton 356:
1.48 anton 357: :noname ( -- )
358: defers 'cold
359: history-cold
360: ; is 'cold
361:
1.19 anton 362: history-cold
363:
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