Class: TMail::Unquoter

Inherits:
Object show all
Defined in:
lib/gems/tmail-1.2.3.1/lib/tmail/quoting.rb

Class Method Summary collapse

Class Method Details

.unquote_and_convert_to(text, to_charset, from_charset = "iso-8859-1", preserve_underscores = false) ⇒ Object 



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# File 'lib/gems/tmail-1.2.3.1/lib/tmail/quoting.rb', line 61

def unquote_and_convert_to(text, to_charset, from_charset = "iso-8859-1", preserve_underscores=false)
  return "" if text.nil?
  text.gsub(/(.*?)(?:(?:=\?(.*?)\?(.)\?(.*?)\?=)|$)/) do
    before = $1
    from_charset = $2
    quoting_method = $3
    text = $4

    before = convert_to(before, to_charset, from_charset) if before.length > 0
    before + case quoting_method
        when "q", "Q" then
          unquote_quoted_printable_and_convert_to(text, to_charset, from_charset, preserve_underscores)
        when "b", "B" then
          unquote_base64_and_convert_to(text, to_charset, from_charset)
        when nil then
          # will be nil at the end of the string, due to the nature of
          # the regex used.
          ""
        else
          raise "unknown quoting method #{quoting_method.inspect}"
      end
  end
end

.unquote_base64_and_convert_to(text, to, from) ⇒ Object 



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# File 'lib/gems/tmail-1.2.3.1/lib/tmail/quoting.rb', line 91

def unquote_base64_and_convert_to(text, to, from)
  convert_to(Base64.decode(text), to, from)
end

.unquote_quoted_printable_and_convert_to(text, to, from, preserve_underscores = false) ⇒ Object 



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# File 'lib/gems/tmail-1.2.3.1/lib/tmail/quoting.rb', line 85

def unquote_quoted_printable_and_convert_to(text, to, from, preserve_underscores=false)
  text = text.gsub(/_/, " ") unless preserve_underscores
  text = text.gsub(/\r\n|\r/, "\n") # normalize newlines
  convert_to(text.unpack("M*").first, to, from)
end