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382539a6eb
We have the same helpers for writing and reading a wire.Outpoint type defined separately in a couple places. We will want to use these from the graph db package soon though so instead of defining them again there, this commit unifies things and creates a single exported set of helpers. The next commit will make use of these.
39 lines
853 B
Go
39 lines
853 B
Go
package graphdb
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import (
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"encoding/binary"
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"io"
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"github.com/btcsuite/btcd/wire"
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)
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var (
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// byteOrder defines the preferred byte order, which is Big Endian.
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byteOrder = binary.BigEndian
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)
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// WriteOutpoint writes an outpoint to the passed writer using the minimal
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// amount of bytes possible.
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func WriteOutpoint(w io.Writer, o *wire.OutPoint) error {
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if _, err := w.Write(o.Hash[:]); err != nil {
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return err
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}
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if err := binary.Write(w, byteOrder, o.Index); err != nil {
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return err
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}
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return nil
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}
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// ReadOutpoint reads an outpoint from the passed reader that was previously
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// written using the WriteOutpoint struct.
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func ReadOutpoint(r io.Reader, o *wire.OutPoint) error {
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if _, err := io.ReadFull(r, o.Hash[:]); err != nil {
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return err
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}
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if err := binary.Read(r, byteOrder, &o.Index); err != nil {
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return err
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}
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return nil
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}
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