blob: 24b2d10c94670bb202f1cc6c38c46f8c304d591b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
|
\ tag: terminal emulation
\
\ this code implements IEEE 1275-1994 ANNEX B
\
\ Copyright (C) 2003 Stefan Reinauer
\
\ See the file "COPYING" for further information about
\ the copyright and warranty status of this work.
\
0 value (escseq)
10 buffer: (sequence)
: (match-number) ( x y [1|2] [1|2] -- x [z] )
2dup = if \ 1 1 | 2 2
drop exit
then
2dup > if
2drop drop 1 exit
then
2drop 0
;
: (esc-number) ( maxchar -- ?? ?? num )
>r depth >r ( R: depth maxchar )
0 (sequence) 2+ (escseq) 2- ( 0 seq+2 seqlen-2 )
\ if numerical, scan until non-numerical
0 ?do
( 0 seq+2 )
dup i + c@ a
digit if
( 0 ptr n )
rot a * + ( ptr val )
swap
else
( 0 ptr asc )
ascii ; = if
0 swap
else
drop leave
then
then
loop
depth r> - r>
0 to (escseq)
(match-number)
;
: (match-seq)
(escseq) 1- (sequence) + c@ \ get last character in sequence
\ dup draw-character
case
ascii A of \ CUU - cursor up
1 (esc-number)
0> if
1 max
else
1
then
negate line# +
0 max to line#
endof
ascii B of \ CUD - cursor down
1 (esc-number)
0> if
1 max
line# +
#lines 1- min to line#
then
endof
ascii C of \ CUF - cursor forward
1 (esc-number)
0> if
1 max
column# +
#columns 1- min to column#
then
endof
ascii D of \ CUB - cursor backward
1 (esc-number)
0> if
1 max
negate column# +
0 max to column#
then
endof
ascii E of \ Cursor next line (CNL)
\ FIXME - check agains ANSI3.64
1 (esc-number)
0> if
1 max
line# +
#lines 1- min to line#
then
0 to column#
endof
ascii f of
2 (esc-number)
case
2 of
1- #columns 1- min to column#
1- #lines 1- min to line#
endof
1 of
0 to column#
1- #lines 1- min to line#
endof
0 of
0 to column#
0 to line#
drop
endof
endcase
endof
ascii H of
2 (esc-number)
case
2 of
1- #columns 1- min to column#
1- #lines 1- min to line#
endof
1 of
0 to column#
1- #lines 1- min to line#
endof
0 of
0 to column#
0 to line#
drop
endof
endcase
endof
ascii J of
0 to (escseq)
#columns column# - delete-characters
#lines line# - delete-lines
endof
ascii K of
0 to (escseq)
#columns column# - delete-characters
endof
ascii L of
1 (esc-number)
0> if
1 max
insert-lines
then
endof
ascii M of
1 (esc-number)
1 = if
1 max
delete-lines
then
endof
ascii @ of
1 (esc-number)
1 = if
1 max
insert-characters
then
endof
ascii P of
1 (esc-number)
1 = if
1 max
delete-characters
then
endof
ascii m of
1 (esc-number)
1 = if
7 = if
true to inverse?
else
false to inverse?
then
then
endof
ascii p of \ normal text colors
0 to (escseq)
inverse-screen? if
false to inverse-screen?
inverse? 0= to inverse?
invert-screen
then
endof
ascii q of \ inverse text colors
0 to (escseq)
inverse-screen? not if
true to inverse-screen?
inverse? 0= to inverse?
invert-screen
then
endof
ascii s of
\ Resets the display device associated with the terminal emulator.
0 to (escseq)
reset-screen
endof
endcase
;
: (term-emit) ( char -- )
toggle-cursor
(escseq) 0> if
(escseq) 10 = if
0 to (escseq)
." overflow in esc" cr
drop
then
(escseq) 1 = if
dup ascii [ = if \ not a [
(sequence) 1+ c!
2 to (escseq)
else
0 to (escseq) \ break out of ESC sequence
." out of ESC" cr
drop \ don't print breakout character
then
toggle-cursor exit
else
(sequence) (escseq) + c!
(escseq) 1+ to (escseq)
(match-seq)
toggle-cursor exit
then
then
case
0 of \ NULL
toggle-cursor exit
endof
7 of \ BEL
blink-screen
s" /screen" s" ring-bell"
execute-device-method
endof
8 of \ BS
column# 0<> if
column# 1- to column#
toggle-cursor exit
then
endof
9 of \ TAB
column# dup #columns = if
drop
else
8 + -8 and ff and to column#
then
toggle-cursor exit
endof
a of \ LF
line# 1+ to line#
0 to column#
line# #lines >= if
0 to line#
1 delete-lines
#lines 1- to line#
toggle-cursor exit
then
endof
b of \ VT
line# 0<> if
line# 1- to line#
then
toggle-cursor exit
endof
c of \ FF
0 to column# 0 to line#
erase-screen
endof
d of \ CR
0 to column#
toggle-cursor exit
endof
1b of \ ESC
1b (sequence) c!
1 to (escseq)
endof
\ draw character and advance position
column# #columns >= if
0 to column#
line# 1+ to line#
line# #lines >= if
0 to line#
1 delete-lines
#lines 1- to line#
then
then
dup draw-character
column# 1+ to column#
endcase
toggle-cursor
;
['] (term-emit) to fb-emit
|
