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25 lines
545 B
Go
25 lines
545 B
Go
package testutil
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import (
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"io"
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"github.com/moby/go-archive/compression"
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"github.com/opencontainers/go-digest"
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)
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// UncompressedTarDigest returns the canonical digest of the uncompressed tar stream.
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func UncompressedTarDigest(compressedTar io.Reader) (digest.Digest, error) {
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rd, err := compression.DecompressStream(compressedTar)
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if err != nil {
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return "", err
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}
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defer rd.Close()
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digester := digest.Canonical.Digester()
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if _, err := io.Copy(digester.Hash(), rd); err != nil {
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return "", err
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}
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return digester.Digest(), nil
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}
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