Change of vterm handling logic on backend chardev input event (#40)

[lunaix-os.git] / lunaix-os / hal / term / lcntls / lcntl.h

diff --git a/lunaix-os/hal/term/lcntls/lcntl.h b/lunaix-os/hal/term/lcntls/lcntl.h
new file mode 100644 (file)
index 0000000..f867fa1
--- /dev/null
+++ b/lunaix-os/hal/term/lcntls/lcntl.h
@@ -0,0 +1,77 @@
+#ifndef __LUNAIX_LCNTL_H
+#define __LUNAIX_LCNTL_H
+
+#include <hal/term.h>
+
+#define LCNTLF_SPECIAL_CHAR      0b000001
+#define LCNTLF_CLEAR_INBUF       0b000010
+#define LCNTLF_CLEAR_OUTBUF      0b000100
+#define LCNTLF_STOP              0b001000
+
+enum lcntl_dir {
+    INBOUND,
+    OUTBOUND
+};
+
+struct lcntl_state {
+    struct term* tdev;
+    tcflag_t _if;   // iflags
+    tcflag_t _of;   // oflags
+    tcflag_t _lf;   // local flags
+    tcflag_t _cf;   // control flags
+    tcflag_t _sf;   // state flags
+    enum lcntl_dir direction;
+
+    struct linebuffer* active_line;
+    struct rbuffer* inbuf;
+    struct rbuffer* outbuf;
+    struct rbuffer* echobuf;
+};
+
+int  
+lcntl_put_char(struct lcntl_state* state, char c);
+
+static inline void
+lcntl_set_flag(struct lcntl_state* state, int flags)
+{
+    state->_sf |= flags;
+}
+
+static inline void
+lcntl_raise_line_event(struct lcntl_state* state, int event)
+{
+    state->active_line->sflags |= event;
+}
+
+static inline void
+lcntl_unset_flag(struct lcntl_state* state, int flags)
+{
+    state->_sf &= ~flags;
+}
+
+static inline bool
+lcntl_test_flag(struct lcntl_state* state, int flags)
+{
+    return !!(state->_sf & flags);
+}
+
+static inline bool
+lcntl_outbound(struct lcntl_state* state)
+{
+    return (state->direction == OUTBOUND);
+}
+
+static inline bool
+lcntl_inbound(struct lcntl_state* state)
+{
+    return (state->direction == INBOUND);
+}
+
+static inline bool
+lcntl_check_echo(struct lcntl_state* state, int echo_type)
+{
+    return lcntl_inbound(state) && (state->_lf & echo_type);
+}
+
+
+#endif /* __LUNAIX_LCNTL_H */