example_test.go

Documentation: mime/multipart

		 1  // Copyright 2014 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 multipart_test
		 6  
		 7  import (
		 8  	"fmt"
		 9  	"io"
		10  	"log"
		11  	"mime"
		12  	"mime/multipart"
		13  	"net/mail"
		14  	"strings"
		15  )
		16  
		17  func ExampleNewReader() {
		18  	msg := &mail.Message{
		19  		Header: map[string][]string{
		20  			"Content-Type": {"multipart/mixed; boundary=foo"},
		21  		},
		22  		Body: strings.NewReader(
		23  			"--foo\r\nFoo: one\r\n\r\nA section\r\n" +
		24  				"--foo\r\nFoo: two\r\n\r\nAnd another\r\n" +
		25  				"--foo--\r\n"),
		26  	}
		27  	mediaType, params, err := mime.ParseMediaType(msg.Header.Get("Content-Type"))
		28  	if err != nil {
		29  		log.Fatal(err)
		30  	}
		31  	if strings.HasPrefix(mediaType, "multipart/") {
		32  		mr := multipart.NewReader(msg.Body, params["boundary"])
		33  		for {
		34  			p, err := mr.NextPart()
		35  			if err == io.EOF {
		36  				return
		37  			}
		38  			if err != nil {
		39  				log.Fatal(err)
		40  			}
		41  			slurp, err := io.ReadAll(p)
		42  			if err != nil {
		43  				log.Fatal(err)
		44  			}
		45  			fmt.Printf("Part %q: %q\n", p.Header.Get("Foo"), slurp)
		46  		}
		47  	}
		48  
		49  	// Output:
		50  	// Part "one": "A section"
		51  	// Part "two": "And another"
		52  }
		53
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