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- # encoding: us-ascii
- module Mail
- module Patterns
- 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
- lwsp = %Q| \t\r\n|
- sp = %Q| |
- control = %Q|\x00-\x1f\x7f-\xff|
-
- if control.respond_to?(:force_encoding)
- control = control.force_encoding(Encoding::BINARY)
- end
-
- CRLF = /\r\n/
- WSP = /[#{white_space}]/
- FWS = /#{CRLF}#{WSP}*/
- TEXT = /[#{text}]/ # + obs-text
- FIELD_NAME = /[#{field_name}]+/
- FIELD_BODY = /.+/
- FIELD_LINE = /^[#{field_name}]+:\s*.+$/
- HEADER_LINE = /^([#{field_name}]+:\s*.+)$/
- 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
- end
- end
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