73 lines
1.5 KiB
Go
73 lines
1.5 KiB
Go
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package cid
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import (
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"errors"
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"git.lumeweb.com/LumeWeb/libs5-go/internal/bases"
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"github.com/multiformats/go-multibase"
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)
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var (
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errMultibaseEncodingNotSupported = errors.New("multibase encoding not supported")
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errMultibaseDecodeZeroLength = errors.New("cannot decode multibase for zero length string")
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)
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type Encoder interface {
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ToBytes() []byte
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}
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type multibaseImpl struct {
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Multibase
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encoder Encoder
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}
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type Multibase interface {
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ToHex() (string, error)
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ToBase32() (string, error)
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ToBase64Url() (string, error)
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ToBase58() (string, error)
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ToString() (string, error)
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}
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var _ Multibase = (*multibaseImpl)(nil)
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func NewMultibase(encoder Encoder) Multibase {
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return &multibaseImpl{encoder: encoder}
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}
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func DecodeString(data string) (bytes []byte, err error) {
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if len(data) == 0 {
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return nil, errMultibaseDecodeZeroLength
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}
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switch data[0] {
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case 'z', 'f', 'u', 'b':
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_, bytes, err = multibase.Decode(data)
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case ':':
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bytes = []byte(data)
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default:
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err = errMultibaseEncodingNotSupported
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}
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return bytes, err
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}
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func (m *multibaseImpl) ToHex() (string, error) {
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return bases.ToHex(m.encoder.ToBytes())
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}
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func (m *multibaseImpl) ToBase32() (string, error) {
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return bases.ToBase32(m.encoder.ToBytes())
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}
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func (m *multibaseImpl) ToBase64Url() (string, error) {
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return bases.ToBase64Url(m.encoder.ToBytes())
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}
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func (m *multibaseImpl) ToBase58() (string, error) {
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return bases.ToBase58BTC(m.encoder.ToBytes())
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}
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func (m *multibaseImpl) ToString() (string, error) {
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return m.ToBase58()
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}
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