#18: Added WriteToTempfile() which will create a temporary output file

- We have two versions of this method:
  - One for Go versions below 1.17 using `ioutil.TempFile()`
  - One for Go versions >= 1.17 using `os.CreateTemp()`
This commit is contained in:
Winni Neessen 2022-06-09 09:57:01 +02:00
parent bc9b39f1b8
commit 491b5941aa
Signed by: wneessen
GPG key ID: 385AC9889632126E
2 changed files with 40 additions and 0 deletions

20
msg_totmpfile.go Normal file
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@ -0,0 +1,20 @@
//go:build go1.17
// +build go1.17
package mail
import (
"fmt"
"os"
)
// WriteToTempfile will create a temporary file and output the Msg to this file
// The method will return the filename of the temporary file
func (m *Msg) WriteToTempfile() (string, error) {
f, err := os.CreateTemp("", "go-mail_*.eml")
if err != nil {
return "", fmt.Errorf("failed to create output file: %w", err)
}
defer func() { _ = f.Close() }()
return f.Name(), m.WriteToFile(f.Name())
}

20
msg_totmpfile_116.go Normal file
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//go:build !go1.17
// +build !go1.17
package mail
import (
"fmt"
"io/ioutil"
)
// WriteToTempfile will create a temporary file and output the Msg to this file
// The method will return the filename of the temporary file
func (m *Msg) WriteToTempfile() (string, error) {
f, err := ioutil.TempFile("", "go-mail_*.eml")
if err != nil {
return "", fmt.Errorf("failed to create output file: %w", err)
}
defer func() { _ = f.Close() }()
return f.Name(), m.WriteToFile(f.Name())
}