Module: MailParser::RFC2047

Defined in:
lib/mailparser/rfc2047.rb

Defined Under Namespace

Classes: Encoded, Space

Class Method Summary collapse

Class Method Details

.b_decode(str) ⇒ Object 



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# File 'lib/mailparser/rfc2047.rb', line 55

def b_decode(str)
  return str.gsub(/[^A-Z0-9\+\/=]/i,"").unpack("m")[0]
end

.decode(str, opt = nil) ⇒ Object 



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# File 'lib/mailparser/rfc2047.rb', line 15

def decode(str, opt=nil)
  if opt.is_a? Hash
    charset = opt[:output_charset]
    charset_converter = opt[:charset_converter]
  else
    charset = opt
  end
  charset_converter ||= MailParser::ConvCharset.method(:conv_charset)
  words = []
  mime_word = false
  ss = StringScanner.new(str.gsub(/\r?\n/, ''))
  until ss.eos?
    if s = ss.scan(/\=\?[^\(\)\<\>\@\,\;\:\"\/\[\]\?\.\=]+\?[QB]\?[^\? ]+\?\=/i)
      begin
        s = Encoded.new s, charset, charset_converter
        words.pop if words.length >= 2 and words[-1].is_a? Space and words[-2].is_a? Encoded
      rescue
        # ignore
      end
      words.push s
    elsif s = ss.scan(/\s+/)
      words.push Space.new(s)
    elsif s = ss.scan(/[^\s=]+/)
      words.push s
    else
      words.push ss.scan(/./)
    end
  end
  begin
    ret = words.join
  rescue
    ret = words.map{|s| s.to_s.force_encoding('binary')}.join
  end
  charset ? charset_converter.call(charset, charset, ret) : ret
end

.q_decode(str) ⇒ Object 



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# File 'lib/mailparser/rfc2047.rb', line 51

def q_decode(str)
  return str.gsub(/_/," ").gsub(/=\s*?$/,"=").unpack("M")[0]
end