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
|
# encoding: us-ascii
# frozen_string_literal: true
module Mail
module Constants
white_space = %Q|\x9\x20|
text = %Q|\x1-\x8\xB\xC\xE-\x7f|
field_name = %Q|\x21-\x39\x3b-\x7e|
qp_safe = %Q|\x20-\x3c\x3e-\x7e|
aspecial = %Q|()<>[]:;@\\,."| # RFC5322
tspecial = %Q|()<>@,;:\\"/[]?=| # RFC2045
sp = %Q| |
control = %Q|\x00-\x1f\x7f-\xff|
if control.respond_to?(:force_encoding)
control = control.dup.force_encoding(Encoding::BINARY)
end
LAX_CRLF = /\r?\n/
WSP = /[#{white_space}]/
FWS = /#{LAX_CRLF}#{WSP}*/
UNFOLD_WS = /#{LAX_CRLF}(#{WSP})/m
TEXT = /[#{text}]/ # + obs-text
FIELD_NAME = /[#{field_name}]+/
FIELD_PREFIX = /\A(#{FIELD_NAME})/
FIELD_BODY = /.+/m
FIELD_LINE = /^[#{field_name}]+:\s*.+$/
FIELD_SPLIT = /^(#{FIELD_NAME})\s*:\s*(#{FIELD_BODY})?$/
HEADER_LINE = /^([#{field_name}]+:\s*.+)$/
HEADER_SPLIT = /#{LAX_CRLF}(?!#{WSP})/
QP_UNSAFE = /[^#{qp_safe}]/
QP_SAFE = /[#{qp_safe}]/
CONTROL_CHAR = /[#{control}]/n
ATOM_UNSAFE = /[#{Regexp.quote aspecial}#{control}#{sp}]/n
PHRASE_UNSAFE = /[#{Regexp.quote aspecial}#{control}]/n
TOKEN_UNSAFE = /[#{Regexp.quote tspecial}#{control}#{sp}]/n
ENCODED_VALUE = %r{
\=\? # literal =?
([^?]+) #
\? # literal ?
([QB]) # either a "Q" or a "B"
\? # literal ?
.*? # lazily match all characters
\?\= # literal ?=
}mix # m is multi-line, i is case-insensitive, x is free-spacing
FULL_ENCODED_VALUE = %r{ # Identical to ENCODED_VALUE but captures the whole rather than components of
(
\=\? # literal =?
[^?]+ #
\? # literal ?
[QB] # either a "Q" or a "B"
\? # literal ?
.*? # lazily match all characters
\?\= # literal ?=
)
}mix # m is multi-line, i is case-insensitive, x is free-spacing
EMPTY = ''
SPACE = ' '
UNDERSCORE = '_'
HYPHEN = '-'
COLON = ':'
ASTERISK = '*'
CRLF = "\r\n"
CR = "\r"
LF = "\n"
CR_ENCODED = "=0D"
LF_ENCODED = "=0A"
CAPITAL_M = 'M'
EQUAL_LF = "=\n"
NULL_SENDER = '<>'
Q_VALUES = ['Q','q']
B_VALUES = ['B','b']
end
end
|
