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authorGravatar Runxi Yu2026-03-10 13:30:48 +0800
committerGravatar Runxi Yu2026-03-10 13:30:48 +0800
commit73e602a5c2c766caba59948e91c11122653705ec (patch)
tree57951a4275dd90c2b3953e5b4bf3c9a7bd09b84a /commitgraph/constants.go
parent*: Move sideband64k and pktline to protocol/ (diff)
signatureNo signature
commitgraph: Move out of format/
Diffstat (limited to 'commitgraph/constants.go')
-rw-r--r--commitgraph/constants.go32
1 files changed, 32 insertions, 0 deletions
diff --git a/commitgraph/constants.go b/commitgraph/constants.go
new file mode 100644
index 00000000..3a06a290
--- /dev/null
+++ b/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
+)