1 /*
2  * ansi.h
3  */
4 
5 #ifndef COM32_LIB_SYS_ANSI_H
6 #define COM32_LIB_SYS_ANSI_H
7 
8 #include <inttypes.h>
9 #include <stdbool.h>
10 #include "vesa/video.h"
11 
12 #define ANSI_MAX_PARMS	16
13 
14 enum ansi_state {
15     st_init,
16     st_esc,
17     st_csi,
18     st_tbl,
19     st_tblc,
20 };
21 
22 struct curxy {
23     uint8_t x, y;
24 } __attribute__ ((packed));
25 
26 struct term_state {
27     enum ansi_state state;
28     int nparms;			/* Number of parameters seen */
29     int parms[ANSI_MAX_PARMS];
30     bool pvt;			/* Private code? */
31     struct curxy xy;
32     struct curxy saved_xy;
33     attr_t cindex;		/* SOH color index */
34     uint8_t fg;
35     uint8_t bg;
36     uint8_t intensity;
37     bool vtgraphics;		/* VT graphics on/off */
38     bool underline;
39     bool blink;
40     bool reverse;
41     bool autocr;
42     bool autowrap;
43     bool cursor;
44 };
45 
46 struct ansi_ops {
47     void (*erase) (const struct term_state * st, int x0, int y0, int x1,
48 		   int y1);
49     void (*write_char) (int x, int y, uint8_t ch, const struct term_state * st);
50     void (*showcursor) (const struct term_state * st);
51     void (*scroll_up) (const struct term_state * st);
52     void (*set_cursor) (int x, int y, bool visible);
53     void (*beep) (void);
54 };
55 
56 struct term_info {
57     int rows, cols;		/* Screen size */
58     int disabled;
59     struct term_state *ts;
60     const struct ansi_ops *op;
61 };
62 
63 void __ansi_init(const struct term_info *ti);
64 void __ansi_putchar(const struct term_info *ti, uint8_t ch);
65 void __ansicon_beep(void);
66 
67 #endif /* COM32_LIB_SYS_ANSI_H */
68