format/commitgraph: Split into ./read and ./ v0.1.60

1 files changed, 0 insertions, 114 deletions

diff --git a/format/commitgraph/bloom.go b/format/commitgraph/bloom.go
deleted file mode 100644
index 660dc1db..00000000
--- a/format/commitgraph/bloom.go
+++ /dev/null
@@ -1,114 +0,0 @@
-package commitgraph
-
-import (
-	"encoding/binary"
-
-	"codeberg.org/lindenii/furgit/format/commitgraph/bloom"
-	"codeberg.org/lindenii/furgit/internal/intconv"
-)
-
-// HasBloom reports whether any layer has changed-path Bloom data.
-func (reader *Reader) HasBloom() bool {
-	for i := range reader.layers {
-		layer := &reader.layers[i]
-		if layer.chunkBloomIndex != nil && layer.chunkBloomData != nil && layer.bloomSettings != nil {
-			return true
-		}
-	}
-
-	return false
-}
-
-// BloomVersion returns the changed-path Bloom hash version, or 0 if absent.
-func (reader *Reader) BloomVersion() uint8 {
-	for i := len(reader.layers) - 1; i >= 0; i-- {
-		layer := &reader.layers[i]
-		if layer.bloomSettings != nil {
-			version, err := intconv.Uint32ToUint8(layer.bloomSettings.HashVersion)
-			if err != nil {
-				return 0
-			}
-
-			return version
-		}
-	}
-
-	return 0
-}
-
-// BloomFilterAt returns one commit's changed-path Bloom filter.
-//
-// Returns ErrBloomUnavailable when this commit graph has no Bloom data.
-func (reader *Reader) BloomFilterAt(pos Position) (*bloom.Filter, error) {
-	layer, err := reader.layerByPosition(pos)
-	if err != nil {
-		return nil, err
-	}
-
-	if layer.chunkBloomIndex == nil || layer.chunkBloomData == nil || layer.bloomSettings == nil {
-		return nil, &ErrBloomUnavailable{Pos: pos}
-	}
-
-	start, end, err := bloomRange(layer, pos.Index)
-	if err != nil {
-		return nil, err
-	}
-
-	filter := bloom.NewFilter(
-		layer.chunkBloomData[bloom.DataHeaderSize+start:bloom.DataHeaderSize+end],
-		*layer.bloomSettings,
-	)
-
-	return filter, nil
-}
-
-func bloomRange(layer *layer, commitIndex uint32) (int, int, error) {
-	off64 := uint64(commitIndex) * 4
-
-	off, err := intconv.Uint64ToInt(off64)
-	if err != nil {
-		return 0, 0, err
-	}
-
-	end := binary.BigEndian.Uint32(layer.chunkBloomIndex[off : off+4])
-
-	var start uint32
-
-	if commitIndex > 0 {
-		prevOff64 := uint64(commitIndex-1) * 4
-
-		prevOff, err := intconv.Uint64ToInt(prevOff64)
-		if err != nil {
-			return 0, 0, err
-		}
-
-		start = binary.BigEndian.Uint32(layer.chunkBloomIndex[prevOff : prevOff+4])
-	}
-
-	if end < start {
-		return 0, 0, &ErrMalformed{Path: layer.path, Reason: "invalid BIDX range"}
-	}
-
-	bdatLen := len(layer.chunkBloomData) - bloom.DataHeaderSize
-
-	bdatLenU32, err := intconv.IntToUint32(bdatLen)
-	if err != nil {
-		return 0, 0, err
-	}
-
-	if end > bdatLenU32 {
-		return 0, 0, &ErrMalformed{Path: layer.path, Reason: "BIDX range out of BDAT bounds"}
-	}
-
-	startInt, err := intconv.Uint64ToInt(uint64(start))
-	if err != nil {
-		return 0, 0, err
-	}
-
-	endInt, err := intconv.Uint64ToInt(uint64(end))
-	if err != nil {
-		return 0, 0, err
-	}
-
-	return startInt, endInt, nil
-}