input.c File Reference

Input functions. More...

#include "io.h"
#include "thread.h"
#include "int.h"
#include "errnums.h"

Functions
int	getc_try (void)
	Check for character in the keyboard buffer availible.
int	getc (void)
	Reads char from keyboard buffer, else blocks calling thread and waits for keypress.
int	gets (char *str, const size_t len)
	Read at most len-1 characters from keyboard, reading is terminated by ' ' character.
Variables
thread_t	input_queue

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Detailed Description

Input functions.

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Function Documentation

int getc

(

void

)

Reads char from keyboard buffer, else blocks calling thread and waits for keypress.

Returns:

character from keyboard buffer

int getc_try

(

void

)

Check for character in the keyboard buffer availible.

Returns:

EWOULDBLOCK on empty keyboard buffer, EOK else

int gets	(	char *	str,
		const size_t	len
	)

Read at most len-1 characters from keyboard, reading is terminated by '
' character.

Parameters:

	str	- null terminated returned string
	len	- maximum length of str buffer

Returns:

EINVAL for len equal to 0, else str length (without trailing zero)

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