Module: Ruote::XmlReader

Defined in:
lib/ruote/reader/xml.rb

Overview

Turns an XML string into a process definition tree.

Defined Under Namespace

Classes: Node

Class Method Summary collapse

Class Method Details

.read(s, opt = nil) ⇒ Object

Parses the XML string into a process definition tree (array of arrays).



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# File 'lib/ruote/reader/xml.rb', line 71

def self.read(s, opt=nil)

  parser = REXML::Parsers::SAX2Parser.new(s)

  root = nil
  current = nil

  # u, l, q, a <=> url, local, qname, attributes

  parser.listen(:start_element) do |u, l, q, a|
    current = Node.new(current, l.gsub(/-/, '_'), a)
    root ||= current
  end
  parser.listen(:end_element) do |u, l, q, a|
    current = current.parent
  end

  parser.listen(:characters) do |text|
    t = text.strip
    current.attributes[t] = nil if t.size > 0
  end

  parser.parse

  root.to_a
end

.understands?(s) ⇒ Boolean

Returns true if the string seems to be an XML string.

Returns:

  • (Boolean) 


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# File 'lib/ruote/reader/xml.rb', line 38

def self.understands?(s)

  s.match(/<[a-z]+>/) != nil
end