Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message type identifier and 4 byte message length.
(src []byte)
| 20 | // Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message |
| 21 | // type identifier and 4 byte message length. |
| 22 | func (dst *DataRow) Decode(src []byte) error { |
| 23 | if len(src) < 2 { |
| 24 | return &invalidMessageFormatErr{messageType: "DataRow"} |
| 25 | } |
| 26 | rp := 0 |
| 27 | fieldCount := int(binary.BigEndian.Uint16(src[rp:])) |
| 28 | rp += 2 |
| 29 | |
| 30 | // If the capacity of the values slice is too small OR substantially too |
| 31 | // large reallocate. This is too avoid one row with many columns from |
| 32 | // permanently allocating memory. |
| 33 | if cap(dst.Values) < fieldCount || cap(dst.Values)-fieldCount > 32 { |
| 34 | newCap := max(32, fieldCount) |
| 35 | dst.Values = make([][]byte, fieldCount, newCap) |
| 36 | } else { |
| 37 | dst.Values = dst.Values[:fieldCount] |
| 38 | } |
| 39 | |
| 40 | for i := range fieldCount { |
| 41 | if len(src[rp:]) < 4 { |
| 42 | return &invalidMessageFormatErr{messageType: "DataRow"} |
| 43 | } |
| 44 | |
| 45 | valueLen := int(int32(binary.BigEndian.Uint32(src[rp:]))) |
| 46 | rp += 4 |
| 47 | |
| 48 | // null |
| 49 | if valueLen == -1 { |
| 50 | dst.Values[i] = nil |
| 51 | } else { |
| 52 | if len(src[rp:]) < valueLen || valueLen < 0 { |
| 53 | return &invalidMessageFormatErr{messageType: "DataRow"} |
| 54 | } |
| 55 | |
| 56 | dst.Values[i] = src[rp : rp+valueLen : rp+valueLen] |
| 57 | rp += valueLen |
| 58 | } |
| 59 | } |
| 60 | |
| 61 | return nil |
| 62 | } |
| 63 | |
| 64 | // Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length. |
| 65 | func (src *DataRow) Encode(dst []byte) ([]byte, error) { |