class URI::MailTo

RFC6068, the mailto URL scheme.

Constants

COMPONENT

An Array of the available components for URI::MailTo.

DEFAULT_PORT

A Default port of nil for URI::MailTo.

Attributes

headers[R]

E-mail headers set by the URL, as an Array of Arrays.

to[R]

The primary e-mail address of the URL, as a String.

Public Class Methods

build(args) click to toggle source

Description

Creates a new URI::MailTo object from components, with syntax checking.

Components can be provided as an Array or Hash. If an Array is used, the components must be supplied as [to, headers].

If a Hash is used, the keys are the component names preceded by colons.

The headers can be supplied as a pre-encoded string, such as "subject=subscribe&cc=address", or as an Array of Arrays like [['subject', 'subscribe'], ['cc', 'address']].

Examples:

require 'uri'

m1 = URI::MailTo.build(['joe@example.com', 'subject=Ruby'])
m1.to_s  # => "mailto:joe@example.com?subject=Ruby"

m2 = URI::MailTo.build(['john@example.com', [['Subject', 'Ruby'], ['Cc', 'jack@example.com']]])
m2.to_s  # => "mailto:john@example.com?Subject=Ruby&Cc=jack@example.com"

m3 = URI::MailTo.build({:to => 'listman@example.com', :headers => [['subject', 'subscribe']]})
m3.to_s  # => "mailto:listman@example.com?subject=subscribe"
Calls superclass method URI::Generic.build
# File lib/uri/mailto.rb, line 86
def self.build(args)
  tmp = Util.make_components_hash(self, args)

  case tmp[:to]
  when Array
    tmp[:opaque] = tmp[:to].join(',')
  when String
    tmp[:opaque] = tmp[:to].dup
  else
    tmp[:opaque] = ''
  end

  if tmp[:headers]
    query =
      case tmp[:headers]
      when Array
        tmp[:headers].collect { |x|
          if x.kind_of?(Array)
            x[0] + '=' + x[1..-1].join
          else
            x.to_s
          end
        }.join('&')
      when Hash
        tmp[:headers].collect { |h,v|
          h + '=' + v
        }.join('&')
      else
        tmp[:headers].to_s
      end
    unless query.empty?
      tmp[:opaque] << '?' << query
    end
  end

  super(tmp)
end
new(*arg) click to toggle source

Description

Creates a new URI::MailTo object from generic URL components with no syntax checking.

This method is usually called from URI.parse, which checks the validity of each component.

Calls superclass method URI::Generic.new
# File lib/uri/mailto.rb, line 133
def initialize(*arg)
  super(*arg)

  @to = nil
  @headers = []

  # The RFC3986 parser does not normally populate opaque
  @opaque = "?#{@query}" if @query && !@opaque

  unless @opaque
    raise InvalidComponentError,
      "missing opaque part for mailto URL"
  end
  to, header = @opaque.split('?', 2)
  # allow semicolon as a addr-spec separator
  # http://support.microsoft.com/kb/820868
  unless /\A(?:[^@,;]+@[^@,;]+(?:\z|[,;]))*\z/ =~ to
    raise InvalidComponentError,
      "unrecognised opaque part for mailtoURL: #{@opaque}"
  end

  if arg[10] # arg_check
    self.to = to
    self.headers = header
  else
    set_to(to)
    set_headers(header)
  end
end

Public Instance Methods

headers=(v) click to toggle source

Setter for headers v.

# File lib/uri/mailto.rb, line 233
def headers=(v)
  check_headers(v)
  set_headers(v)
  v
end
to=(v) click to toggle source

Setter for to v.

# File lib/uri/mailto.rb, line 201
def to=(v)
  check_to(v)
  set_to(v)
  v
end
to_mailtext() click to toggle source

Returns the RFC822 e-mail text equivalent of the URL, as a String.

Example:

require 'uri'

uri = URI.parse("mailto:ruby-list@ruby-lang.org?Subject=subscribe&cc=myaddr")
uri.to_mailtext
# => "To: ruby-list@ruby-lang.org\nSubject: subscribe\nCc: myaddr\n\n\n"
# File lib/uri/mailto.rb, line 269
    def to_mailtext
      to = URI.decode_www_form_component(@to)
      head = ''
      body = ''
      @headers.each do |x|
        case x[0]
        when 'body'
          body = URI.decode_www_form_component(x[1])
        when 'to'
          to << ', ' + URI.decode_www_form_component(x[1])
        else
          head << URI.decode_www_form_component(x[0]).capitalize + ': ' +
            URI.decode_www_form_component(x[1])  + "\n"
        end
      end

      "To: #{to}
#{head}
#{body}
"
    end
Also aliased as: to_rfc822text
to_rfc822text()
Alias for: to_mailtext
to_s() click to toggle source

Constructs String from URI.

# File lib/uri/mailto.rb, line 240
def to_s
  @scheme + ':' +
    if @to
      @to
    else
      ''
    end +
    if @headers.size > 0
      '?' + @headers.collect{|x| x.join('=')}.join('&')
    else
      ''
    end +
    if @fragment
      '#' + @fragment
    else
      ''
    end
end

Protected Instance Methods

set_headers(v) click to toggle source

Private setter for headers v.

# File lib/uri/mailto.rb, line 222
def set_headers(v)
  @headers = []
  if v
    v.split('&').each do |x|
      @headers << x.split(/=/, 2)
    end
  end
end
set_to(v) click to toggle source

Private setter for to v.

# File lib/uri/mailto.rb, line 195
def set_to(v)
  @to = v
end

Private Instance Methods

check_headers(v) click to toggle source

Checks the headers v component against either

  • HEADER_REGEXP

# File lib/uri/mailto.rb, line 209
def check_headers(v)
  return true unless v
  return true if v.size == 0
  if HEADER_REGEXP !~ v
    raise InvalidComponentError,
      "bad component(expected opaque component): #{v}"
  end

  true
end
check_to(v) click to toggle source

Checks the to v component.

# File lib/uri/mailto.rb, line 170
def check_to(v)
  return true unless v
  return true if v.size == 0

  v.split(/[,;]/).each do |addr|
    # check url safety as path-rootless
    if /\A(?:%\h\h|[!$&-.0-;=@-Z_a-z~])*\z/ !~ addr
      raise InvalidComponentError,
        "an address in 'to' is invalid as URI #{addr.dump}"
    end

    # check addr-spec
    # don't s/\+/ /g
    addr.gsub!(/%\h\h/, URI::TBLDECWWWCOMP_)
    if EMAIL_REGEXP !~ addr
      raise InvalidComponentError,
        "an address in 'to' is invalid as uri-escaped addr-spec #{addr.dump}"
    end
  end

  true
end