mirror of
https://github.com/ipfs/kubo.git
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ec9fac7379
(might as well do this at the same time) License: MIT Signed-off-by: Steven Allen <steven@stebalien.com>
67 lines
1.3 KiB
Go
67 lines
1.3 KiB
Go
package coredag
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import (
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"io"
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"io/ioutil"
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"math"
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"gx/ipfs/QmXyuFW7at4r9dxRAbrPU9JpHW5aqngAFyxvyhvYjzxRKS/go-merkledag"
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cid "gx/ipfs/QmPSQnBKM9g7BaUcZCvswUJVscQ1ipjmwxN5PXCjkp9EQ7/go-cid"
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mh "gx/ipfs/QmPnFwZ2JXKnXgMw8CdBPxn7FWh6LLdjUjxV1fKHuJnkr8/go-multihash"
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ipld "gx/ipfs/QmR7TcHkR9nxkUorfi8XMTAMLUK7GiP64TWWBzY3aacc1o/go-ipld-format"
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)
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func dagpbJSONParser(r io.Reader, mhType uint64, mhLen int) ([]ipld.Node, error) {
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data, err := ioutil.ReadAll(r)
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if err != nil {
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return nil, err
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}
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nd := &merkledag.ProtoNode{}
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err = nd.UnmarshalJSON(data)
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if err != nil {
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return nil, err
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}
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nd.SetCidBuilder(cidPrefix(mhType, mhLen))
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return []ipld.Node{nd}, nil
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}
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func dagpbRawParser(r io.Reader, mhType uint64, mhLen int) ([]ipld.Node, error) {
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data, err := ioutil.ReadAll(r)
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if err != nil {
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return nil, err
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}
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nd, err := merkledag.DecodeProtobuf(data)
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if err != nil {
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return nil, err
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}
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nd.SetCidBuilder(cidPrefix(mhType, mhLen))
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return []ipld.Node{nd}, nil
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}
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func cidPrefix(mhType uint64, mhLen int) *cid.Prefix {
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if mhType == math.MaxUint64 {
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mhType = mh.SHA2_256
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}
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prefix := &cid.Prefix{
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MhType: mhType,
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MhLength: mhLen,
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Version: 1,
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Codec: cid.DagProtobuf,
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}
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if mhType == mh.SHA2_256 {
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prefix.Version = 0
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}
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return prefix
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}
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