Rexml dtd parser

Ruby
1

I seem to have some personal confusion with how to correctly utilize the
rexml/dtd library. I am using ruby version 1.8.6 and when I orginally
tried
to use the code I received some unknown method errors. I modified the
code
in the case statement contained in dtd.rb from the notation
when ElementDecl.PATTERN_RE

to when ElementDecl::PATTERN_RE

I no longer received these errors. However, I am now receiving the
following error.

uninitialized constant REXML::DTD::EntityDecl::PATTERN_RE

When I look at the code in entitydecl.rb I see the following line;

md = source.match( PATTERN_RE, true )

However PATTERN_RE is not declared or intialized in the entitydecl.rb
file.
Am I implementing the library wrong or is this code still bugged?

Any help is much appreciated.

Below is a snapshot of how I am trying to use this library.

#!/usr/bin/ruby -dw

require “rexml/dtd/dtd”
require “pathname”

dtdarg = ARGV[0]

def dtdparse(dtdfile)
path = Pathname::new(dtdfile)
if path.relative? then
dtdfile = File::expand_path(dtdfile)
end
dtddata = REXML::DTD::Parser::parse(dtdfile)
puts dtddata
end

dtdparse(dtdarg)

2

I have had the same problems using the dtd parsing section of rexml. I
got past all the errors only to find that it’s not really parsing all
parts of the dtd. The parse_helper isn’t even written quite correctly as
a parser – it ends up catching only the ElementDeclarations, then
possibly a few things after the last ElementDeclaration. Anyway, it
looks like it’s not a fully-written feature of rexml yet. I decided
since I need it I’ll have to write my own ruby DTD-parser. I might be
putting it on github as a gem (check back at dcparker (Daniel Parker) · GitHub
later).

By the way, does ANYBODY out there know of a real dtd parser in ruby? I
need one that will parse a dtd and actually understand the lists of
attributes and child elements and such. (If none show up, watch for
mine, I probably won’t post it to this list, but it’ll be on github.)

~Daniel

Nathan T. wrote:

I seem to have some personal confusion with how to correctly utilize the
rexml/dtd library. I am using ruby version 1.8.6 and when I orginally
tried
to use the code I received some unknown method errors. I modified the
code
in the case statement contained in dtd.rb from the notation
when ElementDecl.PATTERN_RE

to when ElementDecl::PATTERN_RE

I no longer received these errors. However, I am now receiving the
following error.

uninitialized constant REXML::DTD::EntityDecl::PATTERN_RE

When I look at the code in entitydecl.rb I see the following line;

md = source.match( PATTERN_RE, true )

However PATTERN_RE is not declared or intialized in the entitydecl.rb
file.
Am I implementing the library wrong or is this code still bugged?

Any help is much appreciated.

Below is a snapshot of how I am trying to use this library.

#!/usr/bin/ruby -dw

require “rexml/dtd/dtd”
require “pathname”

dtdarg = ARGV[0]

def dtdparse(dtdfile)
path = Pathname::new(dtdfile)
if path.relative? then
dtdfile = File::expand_path(dtdfile)
end
dtddata = REXML::DTD::Parser::parse(dtdfile)
puts dtddata
end

dtdparse(dtdarg)