Annotation of gforth/history.fs, revision 1.31
1.11 pazsan 1: \ command line edit and history support 16oct94py
1.4 pazsan 2:
1.31 ! anton 3: \ Copyright (C) 1995,2000,2003 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: : type-rest ( span addr pos1 -- span addr pos1 back )
32: >string tuck type ;
33: : (del) ( max span addr pos1 -- max span addr pos2 )
34: 1- >string over 1+ -rot move
35: rot 1- -rot #bs emit type-rest bl emit 1+ backspaces ;
36: : (ins) ( max span addr pos1 char -- max span addr pos2 )
37: >r >string over 1+ swap move 2dup chars + r> swap c!
38: rot 1+ -rot type-rest 1- backspaces 1+ ;
39: : ?del ( max span addr pos1 -- max span addr pos2 0 )
40: dup IF (del) THEN 0 ;
41: : (ret) type-rest drop true space ;
42: : back dup IF 1- #bs emit ELSE #bell emit THEN 0 ;
43: : forw 2 pick over <> IF 2dup + c@ emit 1+ ELSE #bell emit THEN 0 ;
1.23 pazsan 44: : <del> ( max span addr pos1 -- max span addr pos2 0 )
45: 2 pick over <>
46: IF forw drop (del) ELSE #bell emit THEN 0 ;
47: : eof 2 pick over or 0= IF bye ELSE <del> THEN ;
1.11 pazsan 48:
1.27 pazsan 49: : bindkey ( xt key -- ) cells ctrlkeys + ! ;
50:
51: ' forw ctrl F bindkey
52: ' back ctrl B bindkey
53: ' ?del ctrl H bindkey
54: ' eof ctrl D bindkey
55: ' <del> ctrl X bindkey
1.11 pazsan 56:
57: ' (ins) IS insert-char
58:
59: \ history support 16oct94py
60:
1.13 anton 61: 0 Value history \ history file fid
1.4 pazsan 62:
63: 2Variable forward^
64: 2Variable backward^
65: 2Variable end^
66:
1.13 anton 67: : force-open ( addr len -- fid )
1.19 anton 68: 2dup r/w open-file
69: IF
70: drop r/w create-file throw
71: ELSE
72: nip nip
73: THEN ;
1.4 pazsan 74:
1.29 anton 75: s" os-class" environment? [IF] s" unix" str= [ELSE] true [THEN]
1.15 jwilke 76: [IF]
1.16 pazsan 77: : history-file ( -- addr u )
1.14 pazsan 78: s" GFORTHHIST" getenv dup 0= IF
79: 2drop s" ~/.gforth-history"
1.16 pazsan 80: THEN ;
1.15 jwilke 81: [ELSE]
82:
1.16 pazsan 83: : history-dir ( -- addr u )
1.15 jwilke 84: s" TMP" getenv ?dup ?EXIT drop
85: s" TEMP" getenv ?dup ?EXIT drop
86: s" c:/" ;
87:
1.16 pazsan 88: : history-file ( -- addr u )
1.15 jwilke 89: s" GFORTHHIST" getenv ?dup ?EXIT
90: drop
91: history-dir pad place
1.16 pazsan 92: s" /ghist.fs" pad +place pad count ;
93: [THEN]
1.15 jwilke 94:
1.4 pazsan 95: \ moving in history file 16oct94py
96:
97: : clear-line ( max span addr pos1 -- max addr )
98: backspaces over spaces swap backspaces ;
99:
100: : clear-tib ( max span addr pos -- max 0 addr 0 false )
101: clear-line 0 tuck dup ;
102:
1.7 pazsan 103: : hist-pos ( -- ud ) history file-position throw ;
104: : hist-setpos ( ud -- ) history reposition-file throw ;
1.4 pazsan 105:
1.7 pazsan 106: : get-line ( addr len -- len' flag )
107: swap history read-line throw ;
108:
1.4 pazsan 109: : next-line ( max span addr pos1 -- max span addr pos2 false )
110: clear-line
1.7 pazsan 111: forward^ 2@ 2dup hist-setpos backward^ 2!
112: 2dup get-line drop
113: hist-pos forward^ 2!
114: tuck 2dup type 0 ;
1.4 pazsan 115:
1.20 pazsan 116: : find-prev-line ( max addr -- max span addr pos2 )
117: backward^ 2@ forward^ 2!
1.7 pazsan 118: over 2 + negate s>d backward^ 2@ d+ 0. dmax 2dup hist-setpos
119: BEGIN
120: backward^ 2! 2dup get-line WHILE
121: hist-pos 2dup forward^ 2@ d< WHILE
122: rot drop
1.20 pazsan 123: REPEAT 2drop THEN tuck ;
124:
125: : prev-line ( max span addr pos1 -- max span addr pos2 false )
126: clear-line find-prev-line 2dup type 0 ;
1.4 pazsan 127:
128: Create lfpad #lf c,
129:
130: : (enter) ( max span addr pos1 -- max span addr pos2 true )
1.7 pazsan 131: >r end^ 2@ hist-setpos
132: 2dup swap history write-line throw
133: hist-pos 2dup backward^ 2! end^ 2!
1.4 pazsan 134: r> (ret) ;
135:
136: \ some other key commands 16oct94py
137:
138: : first-pos ( max span addr pos1 -- max span addr 0 0 )
139: backspaces 0 0 ;
140: : end-pos ( max span addr pos1 -- max span addr span 0 )
141: type-rest 2drop over 0 ;
142:
143: : extract-word ( addr len -- addr' len' ) dup >r
144: BEGIN 1- dup 0>= WHILE 2dup + c@ bl = UNTIL THEN 1+
145: tuck + r> rot - ;
146:
147: Create prefix-found 0 , 0 ,
148:
1.30 anton 149: : sgn ( n -- -1/0/1 )
150: dup 0= IF EXIT THEN 0< 2* 1+ ;
151:
152: : capscomp ( c_addr1 u c_addr2 -- n )
153: swap bounds
154: ?DO dup c@ I c@ <>
155: IF dup c@ toupper I c@ toupper =
156: ELSE true THEN WHILE 1+ LOOP drop 0
157: ELSE c@ toupper I c@ toupper - unloop THEN sgn ;
158:
1.4 pazsan 159: : word-lex ( nfa1 nfa2 -- -1/0/1 )
1.9 anton 160: dup 0=
161: IF
162: 2drop 1 EXIT
163: THEN
164: name>string 2>r name>string
165: dup r@ =
166: IF
167: rdrop r> capscomp 0<= EXIT
168: THEN
169: r> <
170: nip rdrop ;
1.4 pazsan 171:
1.9 anton 172: : search-voc ( addr len nfa1 nfa2 -- addr len nfa3 )
173: >r
174: BEGIN
175: dup
176: WHILE
177: >r dup r@ name>string nip <=
178: IF
179: 2dup r@ name>string drop capscomp 0=
180: IF
181: r> dup r@ word-lex
182: IF
183: dup prefix-found @ word-lex
184: 0>=
185: IF
186: rdrop dup >r
187: THEN
188: THEN
189: >r
1.7 pazsan 190: THEN
1.9 anton 191: THEN
192: r> @
193: REPEAT
194: drop r> ;
1.7 pazsan 195:
196: : prefix-string ( addr len nfa -- addr' len' )
197: dup prefix-found ! ?dup
1.9 anton 198: IF
199: name>string rot /string rot drop
1.7 pazsan 200: dup 1+ prefix-found cell+ !
201: ELSE
202: 2drop s" " prefix-found cell+ off
203: THEN ;
204:
205: : search-prefix ( addr1 len1 -- addr2 len2 )
206: 0 vp dup @ 1- cells over +
207: DO I 2@ <>
1.17 pazsan 208: IF I cell+ @ wordlist-id @ swap search-voc THEN
1.7 pazsan 209: [ -1 cells ] Literal +LOOP
210: prefix-string ;
211:
212: : kill-expand ( max span addr pos1 -- max span addr pos2 )
213: prefix-found cell+ @ 0 ?DO (del) LOOP ;
214:
215: : tib-full? ( max span addr pos addr' len' -- max span addr pos addr1 u flag )
216: 5 pick over 4 pick + prefix-found @ 0<> - < ;
1.4 pazsan 217:
218: : tab-expand ( max span addr pos1 -- max span addr pos2 0 )
1.28 pazsan 219: key? IF #tab (ins) 0 EXIT THEN
1.23 pazsan 220: kill-expand 2dup extract-word dup 0= IF nip EXIT THEN
221: search-prefix tib-full?
1.7 pazsan 222: IF 7 emit 2drop 0 0 prefix-found 2!
223: ELSE bounds ?DO I c@ (ins) LOOP THEN
224: prefix-found @ IF bl (ins) THEN 0 ;
1.4 pazsan 225:
226: : kill-prefix ( key -- key )
227: dup #tab <> IF 0 0 prefix-found 2! THEN ;
228:
229: ' kill-prefix IS everychar
230:
1.27 pazsan 231: ' next-line ctrl N bindkey
232: ' prev-line ctrl P bindkey
233: ' clear-tib ctrl K bindkey
234: ' first-pos ctrl A bindkey
235: ' end-pos ctrl E bindkey
236: ' (enter) #lf bindkey
237: ' (enter) #cr bindkey
238: ' tab-expand #tab bindkey
1.19 anton 239:
240: \ initializing history
241:
242: : get-history ( addr len -- )
243: ['] force-open catch
244: ?dup-if
245: \ !! >stderr
1.21 pazsan 246: \ history-file type ." : " .error cr
247: drop 2drop
1.19 anton 248: ['] false ['] false ['] (ret)
249: else
250: to history
251: history file-size throw
252: 2dup forward^ 2! 2dup backward^ 2! end^ 2!
253: ['] next-line ['] prev-line ['] (enter)
254: endif
1.27 pazsan 255: dup #lf bindkey
256: #cr bindkey
257: ctrl P bindkey
258: ctrl N bindkey
1.19 anton 259: ;
260:
261: : history-cold ( -- )
262: history-file get-history ;
263:
264: ' history-cold INIT8 chained
265: history-cold
266:
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