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#42: Return error in b64linebreaker.go when no out is set
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1 changed files with 5 additions and 0 deletions
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@ -5,9 +5,13 @@
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package mail
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import (
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"fmt"
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"io"
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)
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// ErrNoOutWriter is an error message that should be used if a Base64LineBreaker has no out io.Writer set
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const ErrNoOutWriter = "no io.Writer set for Base64LineBreaker"
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// Base64LineBreaker is a io.WriteCloser that writes Base64 encoded data streams
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// with line breaks at a given line length
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type Base64LineBreaker struct {
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@ -22,6 +26,7 @@ var nl = []byte(SingleNewLine)
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// line length is reached
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func (l *Base64LineBreaker) Write(b []byte) (n int, err error) {
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if l.out == nil {
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err = fmt.Errorf(ErrNoOutWriter)
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return
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}
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if l.used+len(b) < MaxBodyLength {
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