| // Copyright 2017 Google Inc. All rights reserved. |
| // |
| // 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 zoekt |
| |
| // FormatVersion is a version number. It is increased every time the |
| // on-disk index format is changed. |
| // 5: subrepositories. |
| // 6: remove size prefix for posting varint list. |
| // 7: move subrepos into Repository struct. |
| // 8: move repoMetaData out of indexMetadata |
| // 9: use bigendian uint64 for trigrams. |
| // 10: sections for rune offsets. |
| // 11: file ends in rune offsets. |
| // 12: 64-bit branchmasks. |
| // 13: content checksums |
| const IndexFormatVersion = 13 |
| |
| // FeatureVersion is increased if a feature is added that requires reindexing data. |
| const FeatureVersion = 1 |
| |
| type indexTOC struct { |
| fileContents compoundSection |
| fileNames compoundSection |
| fileSections compoundSection |
| postings compoundSection |
| newlines compoundSection |
| ngramText simpleSection |
| runeOffsets simpleSection |
| fileEndRunes simpleSection |
| |
| branchMasks simpleSection |
| subRepos simpleSection |
| |
| nameNgramText simpleSection |
| namePostings compoundSection |
| nameRuneOffsets simpleSection |
| metaData simpleSection |
| repoMetaData simpleSection |
| nameEndRunes simpleSection |
| contentChecksums simpleSection |
| } |
| |
| func (t *indexTOC) sections() []section { |
| return []section{ |
| // This must be first, so it can be reliably read across |
| // file format versions. |
| &t.metaData, |
| &t.repoMetaData, |
| &t.fileContents, |
| &t.fileNames, |
| &t.fileSections, |
| &t.newlines, |
| &t.ngramText, |
| &t.postings, |
| &t.nameNgramText, |
| &t.namePostings, |
| &t.branchMasks, |
| &t.subRepos, |
| &t.runeOffsets, |
| &t.nameRuneOffsets, |
| &t.fileEndRunes, |
| &t.nameEndRunes, |
| &t.contentChecksums, |
| } |
| } |
