aboutsummaryrefslogtreecommitdiffstats
path: root/actionmailer/lib/action_mailer/quoting.rb
blob: b44f4d50df5c53142378575c01d47e1feeb734ae (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
module ActionMailer
  module Quoting #:nodoc:
    # Convert the given text into quoted printable format, with an instruction
    # that the text be eventually interpreted in the given charset.
    def quoted_printable(text, charset)
      text = text.gsub( /[^a-z ]/i ) { "=%02x" % $&[0] }.gsub( / /, "_" )
      "=?#{charset}?Q?#{text}?="
    end

    # A quick-and-dirty regexp for determining whether a string contains any
    # characters that need escaping.
    CHARS_NEEDING_QUOTING = /[\000-\011\013\014\016-\037\177-\377]/

    # Quote the given text if it contains any "illegal" characters
    def quote_if_necessary(text, charset)
      (text =~ CHARS_NEEDING_QUOTING) ?
        quoted_printable(text, charset) :
        text
    end

    # Quote any of the given strings if they contain any "illegal" characters
    def quote_any_if_necessary(charset, *args)
      args.map { |v| quote_if_necessary(v, charset) }
    end

    # Quote the given address if it needs to be. The address may be a
    # regular email address, or it can be a phrase followed by an address in
    # brackets. The phrase is the only part that will be quoted, and only if
    # it needs to be. This allows extended characters to be used in the
    # "to", "from", "cc", and "bcc" headers.
    def quote_address_if_necessary(address, charset)
      if Array === address
        address.map { |a| quote_address_if_necessary(a, charset) }
      elsif address =~ /^(\S.*)\s+(<.*>)$/
        address = $2
        phrase = quote_if_necessary($1.gsub(/^['"](.*)['"]$/, '\1'), charset)
        "\"#{phrase}\" #{address}"
      else
        address
      end
    end

    # Quote any of the given addresses, if they need to be.
    def quote_any_address_if_necessary(charset, *args)
      args.map { |v| quote_address_if_necessary(v, charset) }
    end
  end
end

module ActionMailer
  module Quoting #:nodoc:
    # Convert the given text into quoted printable format, with an instruction
    # that the text be eventually interpreted in the given charset.
    def quoted_printable(text, charset)
      text = text.gsub( /[^a-z ]/i ) { "=%02x" % $&[0] }.gsub( / /, "_" )
      "=?#{charset}?Q?#{text}?="
    end

    # A quick-and-dirty regexp for determining whether a string contains any
    # characters that need escaping.
    if !defined?(CHARS_NEEDING_QUOTING)
      CHARS_NEEDING_QUOTING = /[\000-\011\013\014\016-\037\177-\377]/
    end

    # Quote the given text if it contains any "illegal" characters
    def quote_if_necessary(text, charset)
      (text =~ CHARS_NEEDING_QUOTING) ?
        quoted_printable(text, charset) :
        text
    end

    # Quote any of the given strings if they contain any "illegal" characters
    def quote_any_if_necessary(charset, *args)
      args.map { |v| quote_if_necessary(v, charset) }
    end

    # Quote the given address if it needs to be. The address may be a
    # regular email address, or it can be a phrase followed by an address in
    # brackets. The phrase is the only part that will be quoted, and only if
    # it needs to be. This allows extended characters to be used in the
    # "to", "from", "cc", and "bcc" headers.
    def quote_address_if_necessary(address, charset)
      if Array === address
        address.map { |a| quote_address_if_necessary(a, charset) }
      elsif address =~ /^(\S.*)\s+(<.*>)$/
        address = $2
        phrase = quote_if_necessary($1.gsub(/^['"](.*)['"]$/, '\1'), charset)
        "\"#{phrase}\" #{address}"
      else
        address
      end
    end

    # Quote any of the given addresses, if they need to be.
    def quote_any_address_if_necessary(charset, *args)
      args.map { |v| quote_address_if_necessary(v, charset) }
    end
  end
end