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module Nokogiri
module XML
class DocumentFragment < Nokogiri::XML::Node
##
# Create a new DocumentFragment from +tags+.
#
# If +ctx+ is present, it is used as a context node for the
# subtree created, e.g., namespaces will be resolved relative
# to +ctx+.
def initialize document, tags = nil, ctx = nil
return self unless tags
children = if ctx
# Fix for issue#490
if Nokogiri.jruby?
# fix for issue #770
ctx.parse("<root #{namespace_declarations(ctx)}>#{tags}</root>").children
else
ctx.parse(tags)
end
else
XML::Document.parse("<root>#{tags}</root>") \
.xpath("/root/node()")
end
children.each { |child| child.parent = self }
end
###
# return the name for DocumentFragment
def name
'#document-fragment'
end
###
# Convert this DocumentFragment to a string
def to_s
children.to_s
end
###
# Convert this DocumentFragment to html
# See Nokogiri::XML::NodeSet#to_html
def to_html *args
if Nokogiri.jruby?
options = args.first.is_a?(Hash) ? args.shift : {}
if !options[:save_with]
options[:save_with] = Node::SaveOptions::NO_DECLARATION | Node::SaveOptions::NO_EMPTY_TAGS | Node::SaveOptions::AS_HTML
end
args.insert(0, options)
end
children.to_html(*args)
end
###
# Convert this DocumentFragment to xhtml
# See Nokogiri::XML::NodeSet#to_xhtml
def to_xhtml *args
if Nokogiri.jruby?
options = args.first.is_a?(Hash) ? args.shift : {}
if !options[:save_with]
options[:save_with] = Node::SaveOptions::NO_DECLARATION | Node::SaveOptions::NO_EMPTY_TAGS | Node::SaveOptions::AS_XHTML
end
args.insert(0, options)
end
children.to_xhtml(*args)
end
###
# Convert this DocumentFragment to xml
# See Nokogiri::XML::NodeSet#to_xml
def to_xml *args
children.to_xml(*args)
end
###
# Search this fragment. See Nokogiri::XML::Node#css
def css *args
if children.any?
children.css(*args)
else
NodeSet.new(document)
end
end
alias :serialize :to_s
class << self
####
# Create a Nokogiri::XML::DocumentFragment from +tags+
def parse tags
self.new(XML::Document.new, tags)
end
end
private
# fix for issue 770
def namespace_declarations ctx
ctx.namespace_scopes.map do |namespace|
prefix = namespace.prefix.nil? ? "" : ":#{namespace.prefix}"
%Q{xmlns#{prefix}="#{namespace.href}"}
end.join ' '
end
def coerce data
return super unless String === data
document.fragment(data).children
end
end
end
end
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