com32/lib/sys/ansi.h

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