Annotation of gforth/history.fs, revision 1.54
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 -- )
73: ' backspaces is back-restore
74:
1.47 pazsan 75: [IFDEF] x-width
1.4 pazsan 76: : clear-line ( max span addr pos1 -- max addr )
1.46 pazsan 77: back-restore over over swap x-width spaces swap back-restore ;
1.47 pazsan 78: [ELSE]
79: : clear-line ( max span addr pos1 -- max addr )
80: back-restore over spaces swap back-restore ;
81: [THEN]
1.41 anton 82: \ : clear-tib ( max span addr pos -- max 0 addr 0 false )
83: \ clear-line 0 tuck dup ;
1.4 pazsan 84:
1.32 pazsan 85: : hist-pos ( -- ud ) history file-position drop ( throw ) ;
86: : hist-setpos ( ud -- ) history reposition-file drop ( throw ) ;
1.4 pazsan 87:
1.7 pazsan 88: : get-line ( addr len -- len' flag )
89: swap history read-line throw ;
90:
1.4 pazsan 91: : next-line ( max span addr pos1 -- max span addr pos2 false )
92: clear-line
1.7 pazsan 93: forward^ 2@ 2dup hist-setpos backward^ 2!
94: 2dup get-line drop
95: hist-pos forward^ 2!
96: tuck 2dup type 0 ;
1.4 pazsan 97:
1.20 pazsan 98: : find-prev-line ( max addr -- max span addr pos2 )
99: backward^ 2@ forward^ 2!
1.7 pazsan 100: over 2 + negate s>d backward^ 2@ d+ 0. dmax 2dup hist-setpos
101: BEGIN
102: backward^ 2! 2dup get-line WHILE
103: hist-pos 2dup forward^ 2@ d< WHILE
104: rot drop
1.20 pazsan 105: REPEAT 2drop THEN tuck ;
106:
107: : prev-line ( max span addr pos1 -- max span addr pos2 false )
108: clear-line find-prev-line 2dup type 0 ;
1.4 pazsan 109:
1.41 anton 110: \ Create lfpad #lf c,
1.4 pazsan 111:
112: : (enter) ( max span addr pos1 -- max span addr pos2 true )
1.7 pazsan 113: >r end^ 2@ hist-setpos
1.32 pazsan 114: 2dup swap history write-line drop ( throw ) \ don't worry about errors
1.7 pazsan 115: hist-pos 2dup backward^ 2! end^ 2!
1.4 pazsan 116: r> (ret) ;
117:
118: : extract-word ( addr len -- addr' len' ) dup >r
119: BEGIN 1- dup 0>= WHILE 2dup + c@ bl = UNTIL THEN 1+
120: tuck + r> rot - ;
121:
122: Create prefix-found 0 , 0 ,
123:
1.30 anton 124: : sgn ( n -- -1/0/1 )
125: dup 0= IF EXIT THEN 0< 2* 1+ ;
126:
127: : capscomp ( c_addr1 u c_addr2 -- n )
128: swap bounds
129: ?DO dup c@ I c@ <>
130: IF dup c@ toupper I c@ toupper =
131: ELSE true THEN WHILE 1+ LOOP drop 0
132: ELSE c@ toupper I c@ toupper - unloop THEN sgn ;
133:
1.4 pazsan 134: : word-lex ( nfa1 nfa2 -- -1/0/1 )
1.9 anton 135: dup 0=
136: IF
137: 2drop 1 EXIT
138: THEN
139: name>string 2>r name>string
140: dup r@ =
141: IF
142: rdrop r> capscomp 0<= EXIT
143: THEN
144: r> <
145: nip rdrop ;
1.4 pazsan 146:
1.9 anton 147: : search-voc ( addr len nfa1 nfa2 -- addr len nfa3 )
148: >r
149: BEGIN
150: dup
151: WHILE
152: >r dup r@ name>string nip <=
153: IF
154: 2dup r@ name>string drop capscomp 0=
155: IF
156: r> dup r@ word-lex
157: IF
158: dup prefix-found @ word-lex
159: 0>=
160: IF
161: rdrop dup >r
162: THEN
163: THEN
164: >r
1.7 pazsan 165: THEN
1.9 anton 166: THEN
167: r> @
168: REPEAT
169: drop r> ;
1.7 pazsan 170:
1.35 pazsan 171: : prefix-off ( -- ) 0 0 prefix-found 2! ;
172:
1.7 pazsan 173: : prefix-string ( addr len nfa -- addr' len' )
174: dup prefix-found ! ?dup
1.9 anton 175: IF
176: name>string rot /string rot drop
1.7 pazsan 177: dup 1+ prefix-found cell+ !
178: ELSE
1.35 pazsan 179: 2drop s" " prefix-off
1.7 pazsan 180: THEN ;
181:
182: : search-prefix ( addr1 len1 -- addr2 len2 )
183: 0 vp dup @ 1- cells over +
184: DO I 2@ <>
1.17 pazsan 185: IF I cell+ @ wordlist-id @ swap search-voc THEN
1.7 pazsan 186: [ -1 cells ] Literal +LOOP
187: prefix-string ;
188:
189: : tib-full? ( max span addr pos addr' len' -- max span addr pos addr1 u flag )
190: 5 pick over 4 pick + prefix-found @ 0<> - < ;
1.4 pazsan 191:
192: : kill-prefix ( key -- key )
1.36 pazsan 193: dup #tab <> IF prefix-off THEN ;
1.33 pazsan 194:
195: \ UTF-8 support
196:
1.38 anton 197: require utf-8.fs
1.33 pazsan 198:
1.39 anton 199: [IFUNDEF] #esc 27 Constant #esc [THEN]
200:
1.51 pazsan 201: Variable curpos
202:
1.54 ! pazsan 203: s" os-type" environment? [IF] s" cygwin" str= [IF]
! 204: : save-cursor ( -- ) #esc emit '7 emit ;
! 205: : restore-cursor ( -- ) #esc emit '8 emit ;
! 206: : cur-correct ( addr u -- ) 2drop ;
! 207: [ELSE]
1.51 pazsan 208: : at-xy? ( -- x y )
209: key? drop
210: #esc emit ." [6n" 0 0
211: BEGIN key dup 'R <> WHILE
212: dup '; = IF drop swap ELSE
213: dup '0 '9 1+ within IF '0 - swap 10 * + ELSE
214: drop THEN THEN
215: REPEAT drop 1- swap 1- ;
216: : cursor@ ( -- n ) at-xy? form nip * + ;
217: : cursor! ( n -- ) form nip /mod at-xy ;
218: : cur-correct ( addr u -- ) x-width curpos @ + cursor@ -
219: form nip >r r@ 2/ + r@ / r> * negate curpos +! ;
220: : save-cursor ( -- ) cursor@ curpos ! ;
221: : restore-cursor ( -- ) curpos @ cursor! ;
1.54 ! pazsan 222: [THEN]
1.39 anton 223: : .rest ( addr pos1 -- addr pos1 )
1.53 pazsan 224: key? ?EXIT
1.51 pazsan 225: restore-cursor 2dup type 2dup cur-correct ;
1.39 anton 226: : .all ( span addr pos1 -- span addr pos1 )
1.53 pazsan 227: key? ?EXIT
1.51 pazsan 228: restore-cursor >r 2dup swap type 2dup swap cur-correct r> ;
1.44 anton 229: : xback-restore ( u -- )
1.53 pazsan 230: drop key? ?EXIT
231: restore-cursor ;
1.44 anton 232:
233: \ In the following, addr max is the buffer, addr span is the current
234: \ string in the buffer, and pos1 is the cursor position in the buffer.
1.39 anton 235:
1.40 anton 236: : <xins> ( max span addr pos1 xc -- max span addr pos2 )
237: >r 2over r@ xc-size + u< IF ( max span addr pos1 R:xc )
238: rdrop bell EXIT THEN
239: >string over r@ xc-size + swap move
240: 2dup chars + r@ swap r@ xc-size xc!+? 2drop drop
241: r> xc-size >r rot r@ chars + -rot r> chars + ;
242: : (xins) ( max span addr pos1 xc -- max span addr pos2 )
1.52 pazsan 243: <xins> .all .rest ;
1.40 anton 244: : xback ( max span addr pos1 -- max span addr pos2 f )
245: dup IF over + xchar- over - 0 max .all .rest
1.39 anton 246: ELSE bell THEN 0 ;
1.40 anton 247: : xforw ( max span addr pos1 -- max span addr pos2 f )
248: 2 pick over <> IF over + xc@+ xemit over - ELSE bell THEN 0 ;
249: : (xdel) ( max span addr pos1 -- max span addr pos2 )
250: over + dup xchar- tuck - >r over -
1.39 anton 251: >string over r@ + -rot move
252: rot r> - -rot ;
1.40 anton 253: : ?xdel ( max span addr pos1 -- max span addr pos2 0 )
254: dup IF (xdel) .all 2 spaces .rest THEN 0 ;
255: : <xdel> ( max span addr pos1 -- max span addr pos2 0 )
1.39 anton 256: 2 pick over <>
1.40 anton 257: IF xforw drop (xdel) .all 2 spaces .rest
1.39 anton 258: ELSE bell THEN 0 ;
1.40 anton 259: : xeof 2 pick over or 0= IF bye ELSE <xdel> THEN ;
1.39 anton 260:
1.40 anton 261: : xfirst-pos ( max span addr pos1 -- max span addr 0 0 )
1.39 anton 262: drop 0 .all .rest 0 ;
1.40 anton 263: : xend-pos ( max span addr pos1 -- max span addr span 0 )
1.39 anton 264: drop over .all 0 ;
265:
266:
1.40 anton 267: : xclear-line ( max span addr pos1 -- max addr )
1.39 anton 268: drop restore-cursor swap spaces restore-cursor ;
1.40 anton 269: : xclear-tib ( max span addr pos -- max 0 addr 0 false )
270: xclear-line 0 tuck dup ;
1.39 anton 271:
1.40 anton 272: : (xenter) ( max span addr pos1 -- max span addr pos2 true )
1.39 anton 273: >r end^ 2@ hist-setpos
274: 2dup swap history write-line drop ( throw ) \ don't worry about errors
275: hist-pos 2dup backward^ 2! end^ 2!
276: r> .all space true ;
277:
1.40 anton 278: : xkill-expand ( max span addr pos1 -- max span addr pos2 )
1.39 anton 279: prefix-found cell+ @ ?dup IF >r
280: r@ - >string over r@ + -rot move
281: rot r@ - -rot .all r> spaces .rest THEN ;
282:
283: : insert ( string length buffer size -- )
284: rot over min >r r@ - ( left over )
285: over dup r@ + rot move r> move ;
286:
1.40 anton 287: : xtab-expand ( max span addr pos1 -- max span addr pos2 0 )
288: key? IF #tab (xins) 0 EXIT THEN
289: xkill-expand 2dup extract-word dup 0= IF nip EXIT THEN
1.39 anton 290: search-prefix tib-full?
1.40 anton 291: IF bell 2drop prefix-off
1.39 anton 292: ELSE dup >r
293: 2>r >string r@ + 2r> 2swap insert
294: r@ + rot r> + -rot
295: THEN
1.40 anton 296: prefix-found @ IF bl (xins) ELSE .all .rest THEN 0 ;
1.39 anton 297:
1.40 anton 298: : xchar-history ( -- )
299: ['] xforw ctrl F bindkey
300: ['] xback ctrl B bindkey
301: ['] ?xdel ctrl H bindkey
302: ['] xeof ctrl D bindkey
303: ['] <xdel> ctrl X bindkey
304: ['] xclear-tib ctrl K bindkey
305: ['] xfirst-pos ctrl A bindkey
306: ['] xend-pos ctrl E bindkey
1.49 pazsan 307: history IF ['] (xenter) #lf bindkey THEN
308: history IF ['] (xenter) #cr bindkey THEN
1.40 anton 309: ['] xtab-expand #tab bindkey
310: ['] (xins) IS insert-char
1.39 anton 311: ['] kill-prefix IS everychar
1.44 anton 312: ['] save-cursor IS everyline
313: ['] xback-restore IS back-restore
314: ;
1.39 anton 315:
1.40 anton 316: xchar-history
1.19 anton 317:
318: \ initializing history
319:
320: : get-history ( addr len -- )
321: ['] force-open catch
322: ?dup-if
323: \ !! >stderr
1.21 pazsan 324: \ history-file type ." : " .error cr
1.49 pazsan 325: drop 2drop 0 to history
1.19 anton 326: ['] false ['] false ['] (ret)
327: else
328: to history
329: history file-size throw
330: 2dup forward^ 2! 2dup backward^ 2! end^ 2!
331: ['] next-line ['] prev-line ['] (enter)
332: endif
1.27 pazsan 333: dup #lf bindkey
334: #cr bindkey
335: ctrl P bindkey
336: ctrl N bindkey
1.19 anton 337: ;
338:
339: : history-cold ( -- )
1.42 pazsan 340: history-file get-history xchar-history ;
1.19 anton 341:
1.48 anton 342: :noname ( -- )
343: defers 'cold
344: history-cold
345: ; is 'cold
346:
1.19 anton 347: history-cold
348:
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