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
|
YOLK --- ansi escapes for CHICKEN -*- text -*-
yes there's already ansi-escape-sequences[1]. consider this NIH ;)
this library is based on the information a gist by fnky[2].
at some point i should base it instead on xterm's manual[3].
Unless otherwise stated, all procedures and variables in this library are
strings or return strings ready for `display'.
INSTALLATION.
Run `chicken-install' in this directory or `make install', which will run it for you. You can also run `make clean' to clean the folder of build artifacts.
MODULES.
(yolk common) --- common functionality
Procedures.
- (esc . xs)
Return a string consisting of XS, converted to strings, prepended by ESC.
- (csi . xs)
Convenience function to escape XS using the csi code (ESC "[").
- (dcs . xs)
Convenience function to escape XS using the dcs code (ESC "P").
- (ocs . xs)
Convenience function to escape XS using the ocs code (ESC "]").
- (parameter-assert predicate error-message)
Convenience function. Returns a function that runs PREDICATE on its argument and
returns the argument if PREDICATE passes, or errors if not. I use this for
parameters.
Syntax.
- (define-esc-alt-wrapper wrapper-proc-name param-name (default-proc args ...))
Many terminal behaviors have multiple escape sequences that might work. This
macro defines a parameter named PARAM-NAME and a procedure named
WRAPPER-PROC-NAME that will call PARAM-NAME with ARGS ... . The user can change
which procedure to call by calling (PARAM-NAME new-proc).
(yolk colors) --- NOT FINISHED
There's a bug in this library.
(yolk cursor) --- cursor movement
Variables.
-- cursor-home
Move the cursor to the top-left corner (0,0). NOTE: This and the move commands
might be revised later.
Procedures.
-- (cursor-move x y)
Move cursor to X, Y, counting from the top-left corner of the screen.
cursor-move is an esc-alt-wrapper that defaults to cursor-move/H ("^[[Y;XH").
-- (cursor-up n)
-- (cursor-down n)
-- (cursor-right n)
-- (cursor-left n)
Move cursor up, down, left, or right by N spaces.
-- (cursor-up-bol n)
-- (cursor-down-bol n)
Move cursor up or down by N lines, to the beginning of the given line.
-- (cursor-move-column n)
Move cursor to column N.
-- (cursor-save)
-- (cursor-restore)
Save or restore the cursor's position on the screen. These variables are
parameters defaulting to the DEC escapes. You can set them to the SCO escapes
using (cursor-save cursor-save/sco), for example.
(yolk erase) --- erasing the screen
Variables.
-- erase-screen-down
-- erase-screen-up
-- erase-screen
-- erase-saved-lines
These erase portions of the entire screen.
-- erase-line-right
-- erase-line-left
-- erase-line
These erase portions of the current line.
-- erase-line-and-return
Convenience function to return the cursor to the beginning of the line after erasing it.
(yolk xterm) --- xterm-specific escape sequences
Variables.
-- invisible-cursor
-- visible-cursor
Make the cursor invisible or visible.
-- save-screen
-- restore-screen
Save or restore the screen's state.
-- alt-buffer-enable
-- alt-buffer-disable
Enable or disable the "alternate buffer."
[1]: http://wiki.call-cc.org/eggref/5/ansi-escape-sequences
[2]: https://gist.github.com/fnky/458719343aabd01cfb17a3a4f7296797
[3]: https://invisible-island.net/xterm/ctlseqs/ctlseqs.html
|
