From: Daniel Harple <dharple@...>
Date: 2005-12-24T03:44:53+09:00
Subject: REXML -- Parsing doctypes (and some some bugs)

(1) How does one parse a doctype in REXML?

Hack solution --
#+++++++
require 'rexml/document'
data =<<EOF
<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE Resource SYSTEM "foo.dtd">
<Resource>
     <bar>baz</bar>
</Resource>
EOF
p REXML::Document.new(data).doctype.instance_variable_get 
("@long_name")[1..-2] # => "foo.dtd"
#+++++++

There must be a simple solution I am missing, what is it?

(2) In rexml/dtd/elementdecl, PATTERN_RE is defined twice, issuing a  
warning (see http://www.ruby-doc.org/stdlib/libdoc/rexml/rdoc/classes/ 
REXML/DTD/ElementDecl.html)

(3)
#+++++++
require 'rexml/dtd/dtd'
data =<<EOF
<!ELEMENT foo    (bar,baz)>
<!ELEMENT bar    (#PCDATA)>
<!ELEMENT baz    (#PCDATA)>
EOF

p REXML::DTD::Parser.parse(data)
# => /opt/local/lib/ruby/1.8/rexml/dtd/elementdecl.rb:8: warning:  
already initialized constant PATTERN_RE
# => /opt/local/lib/ruby/1.8/rexml/dtd/dtd.rb:25:in `parse_helper':  
undefined method `PATTERN_RE' for REXML::DTD::ElementDecl:Class  
(NoMethodError)
# =>        from /opt/local/lib/ruby/1.8/rexml/dtd/dtd.rb:14:in `parse'
#+++++++

-- Daniel