Function base64_encode_using_maps

ccan/ccan/base64/base64.c:88–114

}

ssize_t base64_encode_using_maps(const base64_maps_t *maps,
				 char *dest, const size_t destlen,
				 const char *src, const size_t srclen)
{
	size_t src_offset = 0;
	size_t dest_offset = 0;

	if (destlen < base64_encoded_length(srclen)) {
		errno = EOVERFLOW;
		return -1;
	}

	while (srclen - src_offset >= 3) {
		base64_encode_triplet_using_maps(maps, &dest[dest_offset], &src[src_offset]);
		src_offset += 3;
		dest_offset += 4;
	}

	if (src_offset < srclen) {
		base64_encode_tail_using_maps(maps, &dest[dest_offset], &src[src_offset], srclen-src_offset);
		dest_offset += 4;
	}

	memset(&dest[dest_offset], '\0', destlen-dest_offset);

	return dest_offset;
}

size_t base64_decoded_length(size_t srclen)
{