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51 lines
876 B
51 lines
876 B
2 years ago
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package postman
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import (
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"bytes"
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"encoding/base64"
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"os"
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)
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// Вложение
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type Attachment struct {
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name string
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contentType string
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withFile bool
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}
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func NewAttachment(file string) Attachment {
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return Attachment{
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name: file,
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contentType: "application/octet-stream",
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withFile: true,
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}
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}
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// Импорт файла в тело письма
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func (a *Attachment) WriteFile(buffer *bytes.Buffer) error {
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file, err := os.ReadFile(a.name)
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if err != nil {
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return err
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}
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//
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payload := make([]byte, base64.StdEncoding.EncodedLen(len(file)))
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base64.StdEncoding.Encode(payload, file)
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//
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buffer.WriteString("\r\n")
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for index, line := 0, len(payload); index < line; index++ {
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buffer.WriteByte(payload[index])
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if (index+1)%76 == 0 {
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_, era := buffer.WriteString("\r\n")
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if era != nil {
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return era
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}
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}
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}
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return nil
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}
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