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Kovid Goyal
2023-07-05 22:08:49 +05:30
parent 7268513332
commit ca835cd80d
1 changed files with 6 additions and 6 deletions
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12
tools/rsync/algorithm.go
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@@ -202,7 +202,7 @@ func (r *RSync) CreateSignature(target io.Reader, sw SignatureWriter) error {
}
block = buffer[:n]
weak := rc.full(block)
err = sw(BlockHash{StrongHash: r.uniqueHash(block), WeakHash: weak, Index: index})
err = sw(BlockHash{StrongHash: r.hash(block), WeakHash: weak, Index: index})
if err != nil {
return err
}
@@ -509,7 +509,7 @@ func (self *diff) read_at_least_one_operation() (err error) {
found_hash := false
var block_index uint64
if hh, ok := self.hash_lookup[self.rc.val]; ok {
block_index, found_hash = findUniqueHash(hh, self.hash(self.buffer[self.window.pos:self.window.pos+self.window.sz]))
block_index, found_hash = find_hash(hh, self.hash(self.buffer[self.window.pos:self.window.pos+self.window.sz]))
}
if found_hash {
self.send_data()
@@ -551,19 +551,19 @@ func (r *RSync) CreateDelta(source io.Reader, signature []BlockHash, ops Operati
}
// Use a more unique way to identify a set of bytes.
func (r *RSync) uniqueHash(v []byte) []byte {
func (r *RSync) hash(v []byte) []byte {
r.UniqueHasher.Reset()
r.UniqueHasher.Write(v)
return r.UniqueHasher.Sum(nil)
}
// Searches for a given strong hash among all strong hashes in this bucket.
func findUniqueHash(hh []BlockHash, hashValue []byte) (uint64, bool) {
if len(hashValue) == 0 {
func find_hash(hh []BlockHash, hv []byte) (uint64, bool) {
if len(hv) == 0 {
return 0, false
}
for _, block := range hh {
if bytes.Equal(block.StrongHash, hashValue) {
if bytes.Equal(block.StrongHash, hv) {
return block.Index, true
}
}