37 lines
1.0 KiB
Go
37 lines
1.0 KiB
Go
// Package dshelp provides utilities for parsing and creating
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// datastore keys used by go-ipfs
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package dshelp
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import (
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cid "github.com/ipfs/go-cid"
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"github.com/ipfs/go-datastore"
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"github.com/multiformats/go-base32"
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)
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// NewKeyFromBinary creates a new key from a byte slice.
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func NewKeyFromBinary(rawKey []byte) datastore.Key {
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buf := make([]byte, 1+base32.RawStdEncoding.EncodedLen(len(rawKey)))
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buf[0] = '/'
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base32.RawStdEncoding.Encode(buf[1:], rawKey)
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return datastore.RawKey(string(buf))
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}
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// BinaryFromDsKey returns the byte slice corresponding to the given Key.
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func BinaryFromDsKey(k datastore.Key) ([]byte, error) {
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return base32.RawStdEncoding.DecodeString(k.String()[1:])
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}
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// CidToDsKey creates a Key from the given Cid.
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func CidToDsKey(k cid.Cid) datastore.Key {
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return NewKeyFromBinary(k.Bytes())
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}
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// DsKeyToCid converts the given Key to its corresponding Cid.
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func DsKeyToCid(dsKey datastore.Key) (cid.Cid, error) {
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kb, err := BinaryFromDsKey(dsKey)
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if err != nil {
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return cid.Cid{}, err
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}
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return cid.Cast(kb)
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}
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