embox

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/**
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 * @file
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 *
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 * @date 20.03.13
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 * @author Eldar Abusalimov
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 */
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#include <lib/libds/ring.h>
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#include <string.h>
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size_t ring_read(struct ring *r, size_t r_size, size_t read_size) {
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	return ring_just_read(r, r_size, ring_can_read(r, r_size, read_size));
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}
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size_t ring_write(struct ring *r, size_t r_size, size_t write_size) {
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	return ring_just_write(r, r_size, ring_can_write(r, r_size, write_size));
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}
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size_t ring_read_all_into(struct ring *r, const char *r_buff, size_t r_size,
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		char *into_buff, size_t read_size) {
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	size_t count = 0;
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	size_t block_size;
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	while ((block_size = ring_can_read(r, r_size, read_size))) {
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		memcpy(into_buff + count, r_buff + r->tail, block_size);
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		read_size -= block_size;
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		count += block_size;
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		ring_just_read(r, r_size, block_size);
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	}
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	return count;
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}
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size_t ring_write_all_from(struct ring *r, char *r_buff, size_t r_size,
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		const char *from_buff, size_t write_size) {
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	size_t count = 0;
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	size_t block_size;
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	while ((block_size = ring_can_write(r, r_size, write_size))) {
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		memcpy(r_buff + r->head, from_buff + count, block_size);
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		write_size -= block_size;
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		count += block_size;
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		ring_just_write(r, r_size, block_size);
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	}
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	return count;
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}
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