charring.h

Go to the documentation of this file.

#ifndef _CHARING_H_
#define _CHARING_H_

#include <stdint.h>

#define CharRing_available(B)    ((B)->count)

#define CharRing_free_space(B)   ((B)->len - (B)->count)

#define CharRing_full(B)         ((B)->count == (B)->len)

#define CharRing_empty(B)        ((B)->count == 0)


typedef struct {
    char *buf;  
    int16_t head;  
    int16_t tail;  
    int16_t count;  
    int16_t len;  
} CharRingBuf;

CharRingBuf *CharRing_new(int16_t);
void CharRing_free(CharRingBuf *);
void CharRing_putchar(CharRingBuf *, char);
char CharRing_getchar(CharRingBuf *);

#endif /* _CHARING_H_ */