Module: XMLhelper

Included in:
Rexle, Rexle::Element
Defined in:
lib/rexle.rb

Overview

modifications: 15-Apr-2012: bug fix: New element names are typecast as string 16-Mar-2012: bug fix: Element names which contain a colon can now be selected

in the xpath.

22-Feb-2012: bug resolution: Deactivated the PolyrexParser; using RexleParser instead 14-Jan-2012: Implemented Rexle::Elements#each 21-Dec-2011: Bug fix: xpath modified to allow querying from the actual root rather than the 1st child element from the root 04-Sep-2011: Bug fix: xpath will now only return Rexle:elements when

* is used.

03-Sep-2011: Implemented deep_clone as well as modifying clone to function 

similar to REXML.

28-Au-2011: New line characters between elements are now preserved 24-Jul-2011: Smybols are used for attribute keys instead of strings now 18-Jun-2011: A Rexle document can now be added to another Rexle document 

e.g. Rexle.new('<root/>').add Rexle.new "<a>123</a>"

Instance Method Summary collapse

Instance Method Details

#doc_pretty_print(children) ⇒ Object 



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# File 'lib/rexle.rb', line 38

def doc_pretty_print(children)

  body = children.empty? ? self.value : pretty_print(children,2).join
  a = self.root.attributes.to_a.map{|k,v| "%s='%s'" % [k,v]}
  ind = "\n  "   
  "<%s%s>%s%s%s</%s>" % [self.root.name, a.empty? ? '' : ' ' + a.join(' '), ind, body, "\n", self.root.name]
end

#doc_print(children) ⇒ Object 



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# File 'lib/rexle.rb', line 30

def doc_print(children)

  body = children.empty? ? self.root.value : scan_print(children).join
  a = self.root.attributes.to_a.map{|k,v| "%s='%s'" % [k,v]}
  "<%s%s>%s</%s>" % [self.root.name, a.empty? ? '' : ' ' + a.join(' '), body, self.root.name]
  #"<%s%s>%s</%s>" % [self.root.name, a.empty? ? '' : ' ' + a.join(' '), body]
end

#pretty_print(nodes, indent = '0') ⇒ Object 



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# File 'lib/rexle.rb', line 75

def pretty_print(nodes, indent='0')
  indent = indent.to_i
  nodes.map.with_index do |x, i|
    if x.is_a? Rexle::Element then
      unless x.name == '![' then
        a = x.attributes.to_a.map{|k,v| "%s='%s'" % [k,v]}      
        tag = x.name + (a.empty? ? '' : ' ' + a.join(' '))

        ind1 = x.children.length > 0 ? ("\n" + '  ' * indent) : ''
        start = i > 0 ? ("\n" + '  ' * (indent - 1)) : ''
        out = ["%s<%s>%s" % [start, tag, ind1]]

        out << x.value.sub(/^[\n\s]+$/,'') unless x.value.nil? || x.value.empty?
        out << pretty_print(x.children, (indent + 1).to_s.clone)
        ind2 = x.children.length > 0 ? ("\n" + '  ' * (indent - 1)) : ''
        out << "%s</%s>" % [ind2, x.name]
      else    
        "<![CDATA[%s]]>" % x.value
      end
    elsif x.is_a? String then
      x.sub(/^[\n\s]+$/,'')
    end
  end

end

#scan_print(nodes) ⇒ Object 



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# File 'lib/rexle.rb', line 46

def scan_print(nodes)

  nodes.map do |x|

    if x.is_a? Rexle::Element then
      if x.name.chr != '!' then
        a = x.attributes.to_a.map{|k,v| "%s='%s'" % [k,v]}      
        tag = x.name + (a.empty? ? '' : ' ' + a.join(' '))

        if x.value.length > 0 or x.children.length > 0 then
          out = ["<%s>" % tag]
          out << x.value unless x.value.nil? || x.value.empty?
          out << scan_print(x.children)
          out << "</%s>" % x.name
        else
          out = ["<%s/>" % tag]
        end
      elsif x.name == '!-' then
        "<!--%s-->" % x.value
      else
        "<![CDATA[%s]]>" % x.value      
      end      
    elsif x.is_a? String then
      x
    end
  end

end