12345678910111213141516171819202122232425262728293031323334353637383940414243 |
- // Copyright (c) 2017 Couchbase, Inc.
- //
- // Licensed under the Apache License, Version 2.0 (the "License");
- // you may not use this file except in compliance with the License.
- // You may obtain a copy of the License at
- //
- // http://www.apache.org/licenses/LICENSE-2.0
- //
- // Unless required by applicable law or agreed to in writing, software
- // distributed under the License is distributed on an "AS IS" BASIS,
- // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- // See the License for the specific language governing permissions and
- // limitations under the License.
-
- package zap
-
- import "encoding/binary"
-
- func (s *SegmentBase) getDocStoredMetaAndCompressed(docNum uint64) ([]byte, []byte) {
- _, storedOffset, n, metaLen, dataLen := s.getDocStoredOffsets(docNum)
-
- meta := s.mem[storedOffset+n : storedOffset+n+metaLen]
- data := s.mem[storedOffset+n+metaLen : storedOffset+n+metaLen+dataLen]
-
- return meta, data
- }
-
- func (s *SegmentBase) getDocStoredOffsets(docNum uint64) (
- uint64, uint64, uint64, uint64, uint64) {
- indexOffset := s.storedIndexOffset + (8 * docNum)
-
- storedOffset := binary.BigEndian.Uint64(s.mem[indexOffset : indexOffset+8])
-
- var n uint64
-
- metaLen, read := binary.Uvarint(s.mem[storedOffset : storedOffset+binary.MaxVarintLen64])
- n += uint64(read)
-
- dataLen, read := binary.Uvarint(s.mem[storedOffset+n : storedOffset+n+binary.MaxVarintLen64])
- n += uint64(read)
-
- return indexOffset, storedOffset, n, metaLen, dataLen
- }
|