decodeLabels is the inner function of DecodeLabels without any caching
(in []byte, labels []config.Label)
| 146 | |
| 147 | // decodeLabels is the inner function of DecodeLabels without any caching |
| 148 | func (s *Set) decodeLabels(in []byte, labels []config.Label) ([]string, error) { |
| 149 | values := make([]string, len(labels)) |
| 150 | |
| 151 | off := uint(0) |
| 152 | |
| 153 | totalSize := uint(0) |
| 154 | for _, label := range labels { |
| 155 | size := label.Size |
| 156 | if size == 0 { |
| 157 | return nil, fmt.Errorf("error decoding label %q: size is zero or not set", label.Name) |
| 158 | } |
| 159 | |
| 160 | totalSize += size + label.Padding |
| 161 | } |
| 162 | |
| 163 | if totalSize != uint(len(in)) { |
| 164 | return nil, fmt.Errorf("error decoding labels: total size of key %#v is %d bytes, but we have labels to decode %d", in, len(in), totalSize) |
| 165 | } |
| 166 | |
| 167 | for i, label := range labels { |
| 168 | if len(label.Decoders) == 0 { |
| 169 | return nil, fmt.Errorf("error decoding label %q: no decoders set", label.Name) |
| 170 | } |
| 171 | |
| 172 | size := label.Size |
| 173 | |
| 174 | decoded, err := s.decode(in[off:off+size], label) |
| 175 | if err != nil { |
| 176 | return nil, err |
| 177 | } |
| 178 | |
| 179 | off += size + label.Padding |
| 180 | |
| 181 | values[i] = string(decoded) |
| 182 | } |
| 183 | |
| 184 | return values, nil |
| 185 | } |