68 lines
1.1 KiB
Go
68 lines
1.1 KiB
Go
// Package nbt implement the Named Binary Tag format of Minecraft.
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// It provides api like encoding/json package.
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package nbt
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import (
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"io"
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)
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// Tag type IDs
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const (
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TagEnd byte = iota
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TagByte
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TagShort
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TagInt
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TagLong
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TagFloat
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TagDouble
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TagByteArray
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TagString
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TagList
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TagCompound
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TagIntArray
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TagLongArray
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TagNone = 0xFF
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)
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func IsArrayTag(ty byte) bool {
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return ty == TagByteArray || ty == TagIntArray || ty == TagLongArray
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}
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type DecoderReader = interface {
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io.ByteReader
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io.Reader
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}
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type Decoder struct {
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r DecoderReader
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disallowUnknownFields bool
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}
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func NewDecoder(r io.Reader) *Decoder {
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d := new(Decoder)
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if br, ok := r.(DecoderReader); ok {
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d.r = br
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} else {
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d.r = reader{r}
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}
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return d
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}
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// DisallowUnknownFields makes the decoder return an error when unmarshalling a compound
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// tag item that has a tag name not present in the destination struct.
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func (d *Decoder) DisallowUnknownFields() {
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d.disallowUnknownFields = true
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}
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type reader struct {
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io.Reader
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}
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func (r reader) ReadByte() (byte, error) {
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var b [1]byte
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n, err := r.Read(b[:])
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if n == 1 {
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return b[0], nil
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}
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return 0, err
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}
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