func AssetFromDB(typ xdr.AssetType, code string, issuer string) (result xdr.Asset, err error) {
switch typ {
case xdr.AssetTypeAssetTypeNative:
result, err = xdr.NewAsset(xdr.AssetTypeAssetTypeNative, nil)
case xdr.AssetTypeAssetTypeCreditAlphanum4:
var (
an xdr.AssetAlphaNum4
decoded []byte
pkey xdr.Uint256
)
copy(an.AssetCode[:], []byte(code))
decoded, err = strkey.Decode(strkey.VersionByteAccountID, issuer)
if err != nil {
return
}
copy(pkey[:], decoded)
an.Issuer, err = xdr.NewAccountId(xdr.CryptoKeyTypeKeyTypeEd25519, pkey)
if err != nil {
return
}
result, err = xdr.NewAsset(xdr.AssetTypeAssetTypeCreditAlphanum4, an)
case xdr.AssetTypeAssetTypeCreditAlphanum12:
var (
an xdr.AssetAlphaNum12
decoded []byte
pkey xdr.Uint256
)
copy(an.AssetCode[:], []byte(code))
decoded, err = strkey.Decode(strkey.VersionByteAccountID, issuer)
if err != nil {
return
}
copy(pkey[:], decoded)
an.Issuer, err = xdr.NewAccountId(xdr.CryptoKeyTypeKeyTypeEd25519, pkey)
if err != nil {
return
}
result, err = xdr.NewAsset(xdr.AssetTypeAssetTypeCreditAlphanum12, an)
}
return
}
func makeAsset(typ xdr.AssetType, code string, issuer string) xdr.Asset {
if typ == xdr.AssetTypeAssetTypeNative {
result, _ := xdr.NewAsset(typ, nil)
return result
}
an := xdr.AssetAlphaNum4{}
copy(an.AssetCode[:], code[:])
raw := strkey.MustDecode(strkey.VersionByteAccountID, issuer)
var key xdr.Uint256
copy(key[:], raw)
an.Issuer, _ = xdr.NewAccountId(xdr.CryptoKeyTypeKeyTypeEd25519, key)
result, _ := xdr.NewAsset(typ, an)
return result
}
// GetAccountID retireves an xdr.AccountID by attempting to decode a stellar
// address at the provided name.
func (base *Base) GetAccountID(name string) (result xdr.AccountId) {
raw, err := strkey.Decode(strkey.VersionByteAccountID, base.GetString(name))
if base.Err != nil {
return
}
if err != nil {
base.SetInvalidField(name, err)
return
}
var key xdr.Uint256
copy(key[:], raw)
result, err = xdr.NewAccountId(xdr.CryptoKeyTypeKeyTypeEd25519, key)
if err != nil {
base.SetInvalidField(name, err)
return
}
return
}