From: Sean Russell <ser@...>
Date: 2001-10-13T04:41:30+09:00
Subject: [ruby-talk:22476] Re: REXML

Tobias Reif wrote:

> the following works with NQXML.
> 
> How to write the equivalent for REXML?

Hiho.

I hope you've by now found the (new) Tutorial and links to the API 
documentation.

If you would still like clarification, please let me know.

By the way, lately I've been hacking on REXML a lot, adding functionality 
especially to XPath, and squashing bugs as they are reported.  In any case, 
I sometimes update REXML a couple of times a day; I've stopped updating the 
RAA site everytime I do so, because some people may find it annoying.  As a 
result, I'll just post minor release announcements to this newsgroup, and 
I'll save the RAA updates for every couple of days.

As I said, I've made a number of changes to REXML recently; two are fairly 
significant.  The first relates to a bug in DocType processing that was 
breaking REXML document processing in some cases.  The second is that I've 
expanded and debugged XPath support considerably.  The only thing missing 
now is axes:: and function() support, and I'm currently in the process of 
adding axes:: support.  Also, I've rethought my decision to make XPath 
processing part of the Elements class, and have extracted it out into its 
own class.  This doesn't change how you use Element.elements[...] (or any 
other XPath methods), but it does allow you another access point for XPath 
and it makes it easier for me to maintain.

The current version is 0.9.4, and is available at the usual place.

Ah, what the heck.  Here's your translation... I tried to make it as 
identical to your original code.

############### TRANSLATION copy
require 'rexml/document'

main_doc = open('main_doc.xml') do |file| 
        file.read
end
news_template = open('news_template.xml') do |file| 
        file.read
end
content_repository = open('content_repository.xml') do |file|
        file.read
end

main_doc_tree = REXML::Document.new main_doc
news_template_tree = REXML::Document.new news_template
content_repository_tree = REXML::Document.new content_repository

content_repository_to_include = 
content_repository_tree.root.children[5]

# Why this and not children[3]?
news_template_to_include =
news_template_tree.root.children[0].next_sibling.next_sibling.next_sibling

news_template_to_include << content_repository_to_include
main_doc_tree.root << news_template_to_include

out = ''
main_doc_tree.write out
puts out
############### TRANSLATION END

############### TRANSLATION Sean's way
require 'rexml/document'
main_doc_tree = open('main_doc.xml'){|f| REXML::Document.new f}
news_template_tree = open('news_template.xml){|f| REXML::Document.new f}
content_repository_tree = open('content_repository.xml') {|f|
        REXML::Document.new f
}
news_template_to_include = news_template_tree.root.children[3]
news_template_to_include << content_repository_tree.root.children[5]
main_doc_tree.root << news_template_to_include
puts main_doc_tree
############### TRANSLATION END

--- SER