Class: EimXML::Element

Inherits:
Object
  • Object
show all
Defined in:
lib/eim_xml.rb

Direct Known Subclasses

XHTML::Base_

Constant Summary collapse

NEST = 
" "

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, attributes = {}) {|_self| ... } ⇒ Element

Returns a new instance of Element.

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/eim_xml.rb', line 71

def initialize(name, attributes={})
	@name = name.to_sym
	@attributes = Hash.new
	@contents = Array.new

	attributes.each do |k, v|
		@attributes[k.to_sym] = v
	end

	yield(self) if block_given?
end

Instance Attribute Details

#attributes ⇒ Object (readonly)

Returns the value of attribute attributes.



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# File 'lib/eim_xml.rb', line 67

def attributes
  @attributes
end

#contents ⇒ Object (readonly)

Returns the value of attribute contents.



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# File 'lib/eim_xml.rb', line 67

def contents
  @contents
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/eim_xml.rb', line 67

def name
  @name
end

Instance Method Details

#==(xml) ⇒ Object 



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# File 'lib/eim_xml.rb', line 133

def ==(xml)
	return false unless xml.is_a?(Element)
	@name==xml.name && @attributes==xml.attributes && @contents==xml.contents
end

#[](key) ⇒ Object 



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# File 'lib/eim_xml.rb', line 143

def [](key)
	if key.is_a?(Fixnum)
		@contents[key]
	else
		@attributes[key.to_sym]
	end
end

#add(v) ⇒ Object Also known as: << 



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# File 'lib/eim_xml.rb', line 88

def add(v)
	case v
	when nil
	when Array
		v.each{|i| self.add(i)}
	else
		@contents << v
	end
	self
end

#add_attribute(key, value) ⇒ Object Also known as: []= 



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# File 'lib/eim_xml.rb', line 138

def add_attribute(key, value)
	@attributes[key.to_sym] = value
end

#del_attribute(key) ⇒ Object 



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# File 'lib/eim_xml.rb', line 151

def del_attribute(key)
	@attributes.delete(key.to_sym)
end

#find(obj, dst = Element.new(:found)) ⇒ Object 



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# File 'lib/eim_xml.rb', line 201

def find(obj, dst=Element.new(:found))
	return find(Element.new(obj, dst)) if dst.is_a?(Hash)

	dst << self if match(obj)
	@contents.each do |i|
		case
		when i.is_a?(Element)
			i.find(obj, dst)
		when obj.is_a?(Module) && i.is_a?(obj)
			dst << i
		end
	end
	dst
end

#has?(obj, attr = nil) ⇒ Boolean Also known as: has_element?, include?

Returns:

  • (Boolean) 


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# File 'lib/eim_xml.rb', line 187

def has?(obj, attr=nil)
	return has?(Element.new(obj, attr)) if attr

	@contents.any? do |i|
		if i.is_a?(Element)
			i.match(obj) || i.has?(obj)
		else
			obj.is_a?(Module) && i.is_a?(obj)
		end
	end
end

#match(obj, attr = nil) ⇒ Object Also known as: =~

Raises:

  • (ArgumentError) 


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# File 'lib/eim_xml.rb', line 159

def match(obj, attr=nil)
	return match(Element.new(obj, attr)) if attr
	return obj=~@name.to_s if obj.is_a?(Regexp)
	return @name==obj if obj.is_a?(Symbol)
	return is_a?(obj) if obj.is_a?(Module)

	raise ArgumentError unless obj.is_a?(Element)

	return false unless @name==obj.name

	obj.attributes.all? do |k, v|
		(v.nil? && !@attributes.include?(k)) ||
			(@attributes.include?(k) && (v.is_a?(Regexp) ? v =~ @attributes[k] : PCString[v] == PCString[@attributes[k]]))
	end and obj.contents.all? do |i|
		case i
		when Element
			has_element?(i)
		when String
			pcstring_contents.include?(PCString.new(i))
		when PCString
			pcstring_contents.include?(i)
		when Regexp
			@contents.any?{|c| c.is_a?(String) and i=~c}
		end					
	end
end

#name_and_attributes(out = "") ⇒ Object 



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# File 'lib/eim_xml.rb', line 100

def name_and_attributes(out="")
	out << "#{@name}"
	@attributes.each do |k, v|
		next unless v
		out << " #{k}='#{PCString===v ? v : PCString.encode(v.to_s)}'"
	end
end

#pcstring_contents ⇒ Object 



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# File 'lib/eim_xml.rb', line 155

def pcstring_contents
	@contents.select{|c| c.is_a?(String)||c.is_a?(PCString)}.map{|c| c.is_a?(String) ? PCString.new(c) : c}
end

#write_to(out = "") ⇒ Object Also known as: to_s 



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# File 'lib/eim_xml.rb', line 108

def write_to(out = "")
	out << "<"
	name_and_attributes(out)

	if @contents.empty?
		out << " />"
	else
		out << ">"
		@contents.each do |c|
			case c
			when Element
				c.write_to(out)
			when PCString
				out << c.to_s
			else
				out << PCString.encode(c.to_s)
			end
		end
		out << "</#{@name}>"
	end
	out
end