lunaix-os/hal/term/lcntls/lcntl.h

   1 #ifndef __LUNAIX_LCNTL_H
   2 #define __LUNAIX_LCNTL_H
   3
   4 #include <hal/term.h>
   5
   6 #define LCNTLF_SPECIAL_CHAR      0b000001
   7 #define LCNTLF_CLEAR_INBUF       0b000010
   8 #define LCNTLF_CLEAR_OUTBUF      0b000100
   9 #define LCNTLF_STOP              0b001000
  10
  11 enum lcntl_dir {
  12     INBOUND,
  13     OUTBOUND
  14 };
  15
  16 struct lcntl_state {
  17     struct term* tdev;
  18     tcflag_t _if;   // iflags
  19     tcflag_t _of;   // oflags
  20     tcflag_t _lf;   // local flags
  21     tcflag_t _cf;   // control flags
  22     tcflag_t _sf;   // state flags
  23     enum lcntl_dir direction;
  24
  25     struct linebuffer* active_line;
  26     struct rbuffer* inbuf;
  27     struct rbuffer* outbuf;
  28     struct rbuffer* echobuf;
  29 };
  30
  31 int
  32 lcntl_put_char(struct lcntl_state* state, char c);
  33
  34 static inline void
  35 lcntl_set_flag(struct lcntl_state* state, int flags)
  36 {
  37     state->_sf |= flags;
  38 }
  39
  40 static inline void
  41 lcntl_raise_line_event(struct lcntl_state* state, int event)
  42 {
  43     state->active_line->sflags |= event;
  44 }
  45
  46 static inline void
  47 lcntl_unset_flag(struct lcntl_state* state, int flags)
  48 {
  49     state->_sf &= ~flags;
  50 }
  51
  52 static inline bool
  53 lcntl_test_flag(struct lcntl_state* state, int flags)
  54 {
  55     return !!(state->_sf & flags);
  56 }
  57
  58 static inline bool
  59 lcntl_outbound(struct lcntl_state* state)
  60 {
  61     return (state->direction == OUTBOUND);
  62 }
  63
  64 static inline bool
  65 lcntl_inbound(struct lcntl_state* state)
  66 {
  67     return (state->direction == INBOUND);
  68 }
  69
  70 static inline bool
  71 lcntl_check_echo(struct lcntl_state* state, int echo_type)
  72 {
  73     return lcntl_inbound(state) && (state->_lf & echo_type);
  74 }
  75
  76
  77 #endif /* __LUNAIX_LCNTL_H */