diff options
| author |  Runxi Yu | 2026-03-06 08:05:51 +0800 |
|---|---|---|
| committer | Runxi Yu | 2026-03-06 10:00:35 +0800 |
| commit | e15054a4f93fc54806e84aa7036e60168e78e823 (patch) | |
| tree | b576dcb1d3368324e7ca73ca0fe79dd8865c5524 /format/commitgraph/constants.go | |
| parent | internal/intconv: Add Uint32ToUint8 (diff) | |
| signature | No signature | |
format/commitgraph: Add initial commit-graph support
Diffstat (limited to 'format/commitgraph/constants.go')
| -rw-r--r-- | format/commitgraph/constants.go | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/format/commitgraph/constants.go b/format/commitgraph/constants.go new file mode 100644 index 00000000..96648fae --- /dev/null +++ b/format/commitgraph/constants.go @@ -0,0 +1,32 @@ +package commitgraph + +const ( + fileSignature = 0x43475048 // "CGPH" + fileVersion = 1 +) + +const ( + chunkOIDF = 0x4f494446 // "OIDF" + chunkOIDL = 0x4f49444c // "OIDL" + chunkCDAT = 0x43444154 // "CDAT" + chunkGDA2 = 0x47444132 // "GDA2" + chunkGDO2 = 0x47444f32 // "GDO2" + chunkEDGE = 0x45444745 // "EDGE" + chunkBIDX = 0x42494458 // "BIDX" + chunkBDAT = 0x42444154 // "BDAT" + chunkBASE = 0x42415345 // "BASE" +) + +const ( + headerSize = 8 + chunkEntrySize = 12 + fanoutSize = 256 * 4 +) + +const ( + parentNone = 0x70000000 + parentExtraMask = 0x80000000 + parentLastMask = 0x7fffffff + + generationOverflow = 0x80000000 +) |