120 lines
2.6 KiB
Go
120 lines
2.6 KiB
Go
// Copyright 2020 dfuse Platform Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package tokenregistry
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import (
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"fmt"
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bin "github.com/dfuse-io/binary"
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"github.com/dfuse-io/solana-go"
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)
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const TOKEN_META_SIZE = 229
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type TokenMeta struct {
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IsInitialized bool
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Reg [3]byte `text:"-"`
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DataType byte
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MintAddress *solana.PublicKey
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RegistrationAuthority *solana.PublicKey
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Logo Logo
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Name Name
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Website Website
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Symbol Symbol
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}
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func DecodeTokenMeta(in []byte) (*TokenMeta, error) {
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var t *TokenMeta
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decoder := bin.NewDecoder(in)
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err := decoder.Decode(&t)
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if err != nil {
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return nil, fmt.Errorf("unpack: %w", err)
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}
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return t, nil
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}
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type Logo [64]byte
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func LogoFromString(logo string) (Logo, error) {
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data := []byte(logo)
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if len(data) > 64 {
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return Logo{}, fmt.Errorf("logo data to long expected 64 got %d", len(data))
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}
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l := Logo{}
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copy(l[:], data)
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return l, nil
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}
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func (l Logo) String() string {
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return AsciiString(l[:])
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}
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type Name [32]byte
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func NameFromString(name string) (Name, error) {
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data := []byte(name)
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if len(data) > 32 {
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return Name{}, fmt.Errorf("name data to long expected 32 got %d", len(data))
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}
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n := Name{}
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copy(n[:], data)
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return n, nil
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}
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func (n Name) String() string {
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return AsciiString(n[:])
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}
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type Symbol [32]byte
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func SymbolFromString(symbol string) (Symbol, error) {
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data := []byte(symbol)
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if len(data) > 32 {
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return Symbol{}, fmt.Errorf("symbol data to long expected 12 got %d", len(data))
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}
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s := Symbol{}
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copy(s[:], data)
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return s, nil
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}
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func (s Symbol) String() string {
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return AsciiString(s[:])
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}
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type Website [32]byte
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func WebsiteFromString(symbol string) (Website, error) {
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data := []byte(symbol)
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if len(data) > 32 {
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return Website{}, fmt.Errorf("website data to long expected 32 got %d", len(data))
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}
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s := Website{}
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copy(s[:], data)
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return s, nil
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}
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func (s Website) String() string {
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return AsciiString(s[:])
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}
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func AsciiString(data []byte) string {
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var trimmed []byte
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for _, b := range data {
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if b > 0 {
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trimmed = append(trimmed, b)
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}
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}
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return string(trimmed)
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}
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