Class: Mapi::RTF::Converter

Inherits:
Object
  • Object
show all
Defined in:
lib/mapi/rtf.rb

Class Method Summary collapse

Class Method Details

.rtf2text(str, format = :text) ⇒ Object

this is pretty crap, its just to ensure there is always something readable if there is an rtf only body, with no html encapsulation.



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# File 'lib/mapi/rtf.rb', line 65

def self.rtf2text str, format=:text
	group = 0
	text = ''
	text << "<html>\n<body>" if format == :html
	group_type = []
	group_tags = []
	RTF::Tokenizer.process(StringIO.new(str)) do |a, b, c|
		add_text = ''
		case a
		when :open_group; group += 1; group_type[group] = nil; group_tags[group] = []
		when :close_group; group_tags[group].reverse.each { |t| text << "</#{t}>" }; group -= 1;
		when :control_word; # ignore
			group_type[group] ||= b
			# maybe change this to use utf8 where possible
			add_text = if b == 'par' || b == 'line' || b == 'page'; "\n"
			elsif b == 'tab' || b == 'cell'; "\t"
			elsif b == 'endash' || b == 'emdash'; "-"
			elsif b == 'emspace' || b == 'enspace' || b == 'qmspace'; " "
			elsif b == 'ldblquote'; '"'
			else ''
			end
			if b == 'b' || b == 'i' and format == :html
				close = c == 0 ? '/' : ''
				text << "<#{close}#{b}>"
				if c == 0
					group_tags[group].delete b
				else
					group_tags[group] << b
				end
			end
			# lot of other ones belong in here.\
=begin
\bullet 	Bullet character.
\lquote 	Left single quotation mark.
\rquote 	Right single quotation mark.
\ldblquote 	Left double quotation mark.
\rdblquote
=end
		when :control_symbol; # ignore
			 group_type[group] ||= b
			add_text = ' ' if b == '~' # non-breakable space
			add_text = '-' if b == '_' # non-breakable hypen
		when :text
			add_text = b if group <= 1 or group_type[group] == 'rtlch' && !group_type[0...group].include?('*')
		end
		if format == :html
			text << add_text.gsub(/([<>&"'])/) do
				ent = { '<' => 'lt', '>' => 'gt', '&' => 'amp', '"' => 'quot', "'" => 'apos' }[$1]
				"&#{ent};"
			end
			text << '<br>' if add_text == "\n"
		else
			text << add_text
		end
	end
	text << "</body>\n</html>\n" if format == :html
	text
end