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Package mail

Overview

Package mail implements parsing of mail messages.

For the most part, this package follows the syntax as specified by RFC 5322 and extended by RFC 6532. Notable divergences:

* Obsolete address formats are not parsed, including addresses with
  embedded route information.
* Group addresses are not parsed.
* The full range of spacing (the CFWS syntax element) is not supported,
  such as breaking addresses across lines.
* No unicode normalization is performed.

Index

Package files

message.go

Variables

var ErrHeaderNotPresent = errors.New("mail: header not in message")

func ParseAddressListSource

func ParseAddressList(list string) ([]*Address, error)

ParseAddressList parses the given string as a list of addresses.

Example

package main

import (
	"fmt"
	"log"
	"net/mail"
)

func main() {
	const list = "Alice <alice@example.com>, Bob <bob@example.com>, Eve <eve@example.com>"
	emails, err := mail.ParseAddressList(list)
	if err != nil {
		log.Fatal(err)
	}

	for _, v := range emails {
		fmt.Println(v.Name, v.Address)
	}

}

func ParseDateSource

func ParseDate(date string) (time.Time, error)

ParseDate parses an RFC 5322 date string.

type AddressSource

Address represents a single mail address. An address such as "Barry Gibbs <bg@example.com>" is represented as Address{Name: "Barry Gibbs", Address: "bg@example.com"}.

type Address struct {
        Name    string // Proper name; may be empty.
        Address string // user@domain
}

func ParseAddressSource

func ParseAddress(address string) (*Address, error)

Parses a single RFC 5322 address, e.g. "Barry Gibbs <bg@example.com>"

Example

package main

import (
	"fmt"
	"log"
	"net/mail"
)

func main() {
	e, err := mail.ParseAddress("Alice <alice@example.com>")
	if err != nil {
		log.Fatal(err)
	}

	fmt.Println(e.Name, e.Address)

}

func (*Address) StringSource

func (a *Address) String() string

String formats the address as a valid RFC 5322 address. If the address's name contains non-ASCII characters the name will be rendered according to RFC 2047.

type AddressParserSource

An AddressParser is an RFC 5322 address parser.

type AddressParser struct {
        // WordDecoder optionally specifies a decoder for RFC 2047 encoded-words.
        WordDecoder *mime.WordDecoder
}

func (*AddressParser) ParseSource

func (p *AddressParser) Parse(address string) (*Address, error)

Parse parses a single RFC 5322 address of the form "Gogh Fir <gf@example.com>" or "foo@example.com".

func (*AddressParser) ParseListSource

func (p *AddressParser) ParseList(list string) ([]*Address, error)

ParseList parses the given string as a list of comma-separated addresses of the form "Gogh Fir <gf@example.com>" or "foo@example.com".

A Header represents the key-value pairs in a mail message header.

type Header map[string][]string

func (Header) AddressListSource

func (h Header) AddressList(key string) ([]*Address, error)

AddressList parses the named header field as a list of addresses.

func (Header) DateSource

func (h Header) Date() (time.Time, error)

Date parses the Date header field.

func (Header) GetSource

func (h Header) Get(key string) string

Get gets the first value associated with the given key. It is case insensitive; CanonicalMIMEHeaderKey is used to canonicalize the provided key. If there are no values associated with the key, Get returns "". To access multiple values of a key, or to use non-canonical keys, access the map directly.

type MessageSource

A Message represents a parsed mail message.

type Message struct {
        Header Header
        Body   io.Reader
}

func ReadMessageSource

func ReadMessage(r io.Reader) (msg *Message, err error)

ReadMessage reads a message from r. The headers are parsed, and the body of the message will be available for reading from msg.Body.

Example

package main

import (
	"fmt"
	"io/ioutil"
	"log"
	"net/mail"
	"strings"
)

func main() {
	msg := `Date: Mon, 23 Jun 2015 11:40:36 -0400
From: Gopher <from@example.com>
To: Another Gopher <to@example.com>
Subject: Gophers at Gophercon

Message body
`

	r := strings.NewReader(msg)
	m, err := mail.ReadMessage(r)
	if err != nil {
		log.Fatal(err)
	}

	header := m.Header
	fmt.Println("Date:", header.Get("Date"))
	fmt.Println("From:", header.Get("From"))
	fmt.Println("To:", header.Get("To"))
	fmt.Println("Subject:", header.Get("Subject"))

	body, err := ioutil.ReadAll(m.Body)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%s", body)

}

© Google, Inc.
Licensed under the Creative Commons Attribution License 3.0.
https://golang.org/pkg/net/mail/