example_test.go

     1  // Copyright 2015 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package mail_test
     6  
     7  import (
     8  	"fmt"
     9  	"io"
    10  	"log"
    11  	"net/mail"
    12  	"strings"
    13  	"time"
    14  )
    15  
    16  func ExampleParseAddressList() {
    17  	const list = "Alice <alice@example.com>, Bob <bob@example.com>, Eve <eve@example.com>"
    18  	emails, err := mail.ParseAddressList(list)
    19  	if err != nil {
    20  		log.Fatal(err)
    21  	}
    22  
    23  	for _, v := range emails {
    24  		fmt.Println(v.Name, v.Address)
    25  	}
    26  
    27  	// Output:
    28  	// Alice alice@example.com
    29  	// Bob bob@example.com
    30  	// Eve eve@example.com
    31  }
    32  
    33  func ExampleParseAddress() {
    34  	e, err := mail.ParseAddress("Alice <alice@example.com>")
    35  	if err != nil {
    36  		log.Fatal(err)
    37  	}
    38  
    39  	fmt.Println(e.Name, e.Address)
    40  
    41  	// Output:
    42  	// Alice alice@example.com
    43  }
    44  
    45  func ExampleReadMessage() {
    46  	msg := `Date: Mon, 23 Jun 2015 11:40:36 -0400
    47  From: Gopher <from@example.com>
    48  To: Another Gopher <to@example.com>
    49  Subject: Gophers at Gophercon
    50  
    51  Message body
    52  `
    53  
    54  	r := strings.NewReader(msg)
    55  	m, err := mail.ReadMessage(r)
    56  	if err != nil {
    57  		log.Fatal(err)
    58  	}
    59  
    60  	header := m.Header
    61  	fmt.Println("Date:", header.Get("Date"))
    62  	fmt.Println("From:", header.Get("From"))
    63  	fmt.Println("To:", header.Get("To"))
    64  	fmt.Println("Subject:", header.Get("Subject"))
    65  
    66  	body, err := io.ReadAll(m.Body)
    67  	if err != nil {
    68  		log.Fatal(err)
    69  	}
    70  	fmt.Printf("%s", body)
    71  
    72  	// Output:
    73  	// Date: Mon, 23 Jun 2015 11:40:36 -0400
    74  	// From: Gopher <from@example.com>
    75  	// To: Another Gopher <to@example.com>
    76  	// Subject: Gophers at Gophercon
    77  	// Message body
    78  }
    79  
    80  func ExampleParseDate() {
    81  	dateStr := "Wed, 09 Oct 2024 09:55:06 -0700"
    82  
    83  	t, err := mail.ParseDate(dateStr)
    84  	if err != nil {
    85  		log.Fatalf("Failed to parse date: %v", err)
    86  	}
    87  
    88  	fmt.Println(t.Format(time.RFC3339))
    89  
    90  	// Output:
    91  	// 2024-10-09T09:55:06-07:00
    92  }
    93
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