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|
package swift
import (
"bytes"
"fmt"
"github.com/pkg/errors"
)
// Unmarshal unmarshals value into m
func (m *MT940) Unmarshal(value []byte) error {
tagExtractor := newTagExtractor(value)
tags, err := tagExtractor.Extract()
if err != nil {
return err
}
if len(tags) == 0 {
return fmt.Errorf("Malformed marshaled value")
}
balanceTagOpen := false
for _, tag := range tags {
switch {
case bytes.HasPrefix(tag, []byte(":20:")):
m.JobReference = &AlphaNumericTag{}
err = m.JobReference.Unmarshal(tag)
if err != nil {
return err
}
case bytes.HasPrefix(tag, []byte(":21:")):
m.Reference = &AlphaNumericTag{}
err = m.Reference.Unmarshal(tag)
if err != nil {
return err
}
case bytes.HasPrefix(tag, []byte(":25:")):
m.Account = &AccountTag{}
err = m.Account.Unmarshal(tag)
if err != nil {
return err
}
case bytes.HasPrefix(tag, []byte(":28C:")):
m.StatementNumber = &StatementNumberTag{}
err = m.StatementNumber.Unmarshal(tag)
if err != nil {
return err
}
case bytes.HasPrefix(tag, []byte(":60")):
m.StartingBalance = &BalanceTag{}
err = m.StartingBalance.Unmarshal(tag)
if err != nil {
return errors.WithMessage(err, "unmarshal starting balance tag")
}
balanceTagOpen = true
case bytes.HasPrefix(tag, []byte(":62")):
m.ClosingBalance = &BalanceTag{}
err = m.ClosingBalance.Unmarshal(tag)
if err != nil {
return errors.WithMessage(err, "unmarshal closing balance tag")
}
balanceTagOpen = false
case bytes.HasPrefix(tag, []byte(":64:")):
m.CurrentValutaBalance = &BalanceTag{}
err = m.CurrentValutaBalance.Unmarshal(tag)
if err != nil {
return errors.WithMessage(err, "unmarshal current valuta balance tag")
}
case bytes.HasPrefix(tag, []byte(":65:")):
m.FutureValutaBalance = &BalanceTag{}
err = m.FutureValutaBalance.Unmarshal(tag)
if err != nil {
return errors.WithMessage(err, "unmarshal future valuta balance tag")
}
case bytes.HasPrefix(tag, []byte(":61:")):
transaction := &TransactionTag{}
err = transaction.Unmarshal(tag)
if err != nil {
return err
}
m.Transactions = append(m.Transactions, &TransactionSequence{Transaction: transaction})
case bytes.HasPrefix(tag, []byte(":86:")):
customField := &CustomFieldTag{}
err = customField.Unmarshal(tag)
if err != nil {
return err
}
if balanceTagOpen {
indexLastSliceitem := len(m.Transactions) - 1
if indexLastSliceitem < 0 {
return errors.New("Unexpected CustomTag before first TransactionTag")
}
if m.Transactions[indexLastSliceitem].Description != nil {
return errors.Errorf("Unexpected CustomTag: CustomTag would replace Description of %v", m.Transactions[indexLastSliceitem])
}
m.Transactions[indexLastSliceitem].Description = customField
} else {
m.CustomField = customField
}
default:
return fmt.Errorf("Malformed marshaled value")
}
}
return nil
}
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