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# 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
CRLF = /\r\n/
WSP = /[#{white_space}]/
FWS = /#{CRLF}#{WSP}*/
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 = /#{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 = /\=\?([^?]+)\?([QB])\?[^?]*?\?\=/mi
FULL_ENCODED_VALUE = /(\=\?[^?]+\?[QB]\?[^?]*?\?\=)/mi
EMPTY = ''
SPACE = ' '
UNDERSCORE = '_'
HYPHEN = '-'
COLON = ':'
ASTERISK = '*'
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
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