require 'erb'
class ERB
class ERBString < String
def to_s; self; end
def erb_concat(s)
if self.class === s
concat(s)
else
concat(erb_quote(s))
end
end
def erb_quote(s); s; end
end
end
class ERB4Html < ERB
def self.quoted(s)
HtmlString.new(s)
end
class HtmlString < ERB::ERBString
def erb_quote(s)
ERB::Util::html_escape(s)
end
end
def set_eoutvar(compiler, eoutvar = '_erbout')
compiler.put_cmd = "#{eoutvar}.concat"
compiler.insert_cmd = "#{eoutvar}.erb_concat"
cmd = []
cmd.push "#{eoutvar} = ERB4Html.quoted('')"
compiler.pre_cmd = cmd
cmd = []
cmd.push(eoutvar)
compiler.post_cmd = cmd
end
end
if __FILE__ == $0
page = <<EOP
<title><%=title%></title>
<p><%=para%></p>
EOP
erb = ERB4Html.new(page)
title = "<auto-quote>"
para = "<quoted>"
puts erb.result
title = "<auto-quote>"
para = ERB4Html.quoted("<quoted>")
puts erb.result
end
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