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#include <stdio.h>
#include "ringbuf.h"
int main() {
int sc, rc = -1;
size_t len;
char *data;
ringbuf *r = NULL;
r = ringbuf_new(10);
if (r == NULL) goto done;
sc = ringbuf_put(r, "hello, ed", 9);
if (sc < 0) goto done;
len = ringbuf_get_next_chunk(r, &data);
assert(len == 9);
printf("next chunk length : %zu\n", len);
printf("%.*s\n", (int)len, data);
ringbuf_mark_consumed(r, len);
/* now there are 10 bytes free but only 1 contiguous */
len = ringbuf_get_writable(r, &data);
if (len) printf("writable space: %zu\n", len);
assert(len == 1);
memcpy(data, "a", 1);
ringbuf_wrote(r, len);
/* now there are 9 bytes free, starting at wrap */
len = ringbuf_get_writable(r, &data);
if (len) printf("writable space: %zu\n", len);
assert(len == 9);
memcpy(data, "bcdefghij", 9);
ringbuf_wrote(r, len);
/* read a */
len = ringbuf_get_next_chunk(r, &data);
assert(len == 1);
printf("next chunk length : %zu\n", len);
printf("%.*s\n", (int)len, data);
ringbuf_mark_consumed(r, len);
/* read bcdefghij after the wrap */
len = ringbuf_get_next_chunk(r, &data);
assert(len == 9);
printf("next chunk length : %zu\n", len);
printf("%.*s\n", (int)len, data);
ringbuf_mark_consumed(r, len);
done:
if (r) ringbuf_free(r);
return rc;
}
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