74 lines
1.7 KiB
C
74 lines
1.7 KiB
C
#ifndef _TTY_H
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#define _TTY_H
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#include <types.h>
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#include <processes.h>
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#include <sync.h>
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#define TTY_BUFFER_SIZE 4096
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#define MAX_TTYS 8 /* to make things easy, might change later */
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#define TTY_ECHO 0x10 /* 0b00010000 */
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#define TTY_PASSWORD 0x20 /* 0b00100000 */
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#define TTY_ACTIVE 0x01 /* 0b00000001 */
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#define TTY_CANONICAL 0x40 /* 0b01000000 */
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#define TTY_NULL 0x80 /* 0b10000000 --- used to end the list of tty_t structs in the ttys array */
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#define TTY_NORMAL TTY_ECHO | TTY_ACTIVE | TTY_CANONICAL
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#define MODIFIER_CAPS 0x01 /* 0b00000001 */
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#define MODIFIER_CAPS_DESTROY 0b11111110
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#define MODIFIER_SHIFT 0x02 /* 0b00000010 */
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#define MODIFIER_SHIFT_DESTROY 0b11111101
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#define MODIFIER_ALT 0x04 /* 0b00000100 */
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#define MODIFIER_ALT_DESTROY 0b11111011
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#define MODIFIER_LCTRL 0x10 /* 0b00010000 */
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#define MODIFIER_LCTRL_DESTROY 0b11101111
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#define MODIFIER_RCTRL 0x0 /* 0b00100000*/
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#define MODIFIER_RCTRL_DESTROY 0b11011111
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typedef struct tty_t {
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char input_buffer[TTY_BUFFER_SIZE];
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size_t head;
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size_t tail;
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uint32_t flags;
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bool canonical;
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bool line_ready;
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spinlock_t lock;
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pid_t foreground_pgid; /* not used yet */
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} tty_t;
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/* essentially, key is non-zero if a key like the up arrow is pressed, otherwise c is the char that was entered */
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struct keyevent {
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uint8_t key;
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char c;
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};
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int init_tty(void);
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ssize_t tty_read(tty_t* tty, char* buf, size_t count);
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ssize_t tty_read_active(char* buf, size_t count);
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tty_t* get_active_tty(void);
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tty_t* tty_get_active(void);
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tty_t* make_tty(uint32_t flags);
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void tty_receive_char(char c, uint32_t kbd_mod);
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char tty_translate_char(char c, uint32_t modifiers);
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void tty_input_char(tty_t* tty, char c);
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#endif
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