static couchstore_error_t by_seq_read_docinfo(DocInfo **pInfo, sized_buf *k, sized_buf *v)
{
const raw_seq_index_value *raw = (const raw_seq_index_value*)v->buf;
ssize_t extraSize = v->size - sizeof(*raw);
if (extraSize < 0) {
return COUCHSTORE_ERROR_CORRUPT;
}
uint32_t idsize, datasize;
decode_kv_length(&raw->sizes, &idsize, &datasize);
uint64_t bp = decode_raw48(raw->bp);
int deleted = (bp & BP_DELETED_FLAG) != 0;
bp &= ~BP_DELETED_FLAG;
uint8_t content_meta = decode_raw08(raw->content_meta);
uint64_t rev_seq = decode_raw48(raw->rev_seq);
uint64_t db_seq = decode_sequence_key(k);
sized_buf id = {v->buf + sizeof(*raw), idsize};
sized_buf rev_meta = {id.buf + idsize, extraSize - id.size};
DocInfo* docInfo = couchstore_alloc_docinfo(&id, &rev_meta);
if (!docInfo) {
return COUCHSTORE_ERROR_ALLOC_FAIL;
}
docInfo->db_seq = db_seq;
docInfo->rev_seq = rev_seq;
docInfo->deleted = deleted;
docInfo->bp = bp;
docInfo->size = datasize;
docInfo->content_meta = content_meta;
*pInfo = docInfo;
return COUCHSTORE_SUCCESS;
}
size_t read_kv(const void *buf, sized_buf *key, sized_buf *value)
{
const raw_kv_length* kvlen = buf;
uint32_t klen, vlen;
decode_kv_length(kvlen, &klen, &vlen);
key->size = klen;
key->buf = (char*)(kvlen + 1);
value->size = vlen;
value->buf = key->buf + klen;
return sizeof(raw_kv_length) + klen + vlen;
}
static void test_bitfield_fns(void)
{
uint8_t expected1[8] = {0x12, 0x34, 0x56, 0x78, 0x90};
uint8_t expected2[8] = {0x09, 0x87, 0x65, 0x43, 0x21};
uint8_t expected3[8] = {0x12, 0x34, 0x56, 0x78, 0x90, 0xAB};
uint8_t expected4[8] = {0xBA, 0x98, 0x76, 0x54, 0x32, 0x10};
struct {
raw_08 a;
raw_48 b;
raw_16 c;
raw_40 d;
raw_32 e;
raw_08 f;
} packed;
raw_kv_length kv;
uint32_t klen, vlen;
assert(sizeof(cs_off_t) == 8);
assert(sizeof(raw_08) == 1);
assert(sizeof(raw_16) == 2);
assert(sizeof(raw_32) == 4);
assert(sizeof(raw_40) == 5);
assert(sizeof(raw_48) == 6);
assert(sizeof(packed) == 19);
assert(sizeof(kv) == 5);
kv = encode_kv_length(1234, 123456);
decode_kv_length(&kv, &klen, &vlen);
assert(klen == 1234);
assert(vlen == 123456);
test_raw_08(0);
test_raw_08(UINT8_MAX);
test_raw_16(0);
test_raw_16(12345);
test_raw_16(UINT16_MAX);
test_raw_32(0);
test_raw_32(12345678);
test_raw_32(UINT32_MAX);
test_raw_40(INT64_C(0x1234567890), expected1);
test_raw_40(INT64_C(0x0987654321), expected2);
test_raw_48(INT64_C(0x1234567890AB), expected3);
test_raw_48(INT64_C(0xBA9876543210), expected4);
}
static int by_seq_read_docinfo(DocInfo **pInfo, sized_buf *k, sized_buf *v)
{
const raw_seq_index_value *raw = (const raw_seq_index_value*)v->buf;
ssize_t extraSize = v->size - sizeof(*raw);
if (extraSize < 0) {
return COUCHSTORE_ERROR_CORRUPT;
}
uint32_t idsize, datasize;
decode_kv_length(&raw->sizes, &idsize, &datasize);
uint64_t bp = decode_raw48(raw->bp);
int deleted = (bp & BP_DELETED_FLAG) != 0;
bp &= ~BP_DELETED_FLAG;
uint8_t content_meta = decode_raw08(raw->content_meta);
uint64_t rev_seq = decode_raw48(raw->rev_seq);
uint64_t db_seq = decode_sequence_key(k);
DocInfo* docInfo = malloc(sizeof(DocInfo) + extraSize);
if (!docInfo) {
return COUCHSTORE_ERROR_ALLOC_FAIL;
}
char *rbuf = (char *) docInfo;
memcpy(rbuf + sizeof(DocInfo), v->buf + sizeof(*raw), extraSize);
*pInfo = docInfo;
docInfo->db_seq = db_seq;
docInfo->rev_seq = rev_seq;
docInfo->deleted = deleted;
docInfo->bp = bp;
docInfo->size = datasize;
docInfo->content_meta = content_meta;
docInfo->id.buf = rbuf + sizeof(DocInfo);
docInfo->id.size = idsize;
docInfo->rev_meta.buf = rbuf + sizeof(DocInfo) + idsize;
docInfo->rev_meta.size = extraSize - idsize;
return 0;
}
