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hash: add MultiHasher.Sum() to retrieve a single specific hash

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buengese 2020-09-14 23:02:13 +02:00 committed by buengese
parent ceeac84cfe
commit 2812816142
1 changed files with 9 additions and 0 deletions
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9
fs/hash/hash.go
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@ -238,6 +238,15 @@ func (m *MultiHasher) Sums() map[Type]string {
return dst return dst
} }
// Sum returns the specified hash from the multihasher
func (m *MultiHasher) Sum(hashType Type) ([]byte, error) {
h, ok := m.h[hashType]
if !ok {
return nil, ErrUnsupported
}
return h.Sum(nil), nil
}
// Size returns the number of bytes written // Size returns the number of bytes written
func (m *MultiHasher) Size() int64 { func (m *MultiHasher) Size() int64 {
return m.size return m.size