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module MultiXml
module Parsers
module Libxml2Parser # :nodoc:
# Convert XML document to hash
#
# node::
# The XML node object to convert to a hash.
#
# hash::
# Hash to merge the converted element into.
def node_to_hash(node, hash = {}) # rubocop:disable Metrics/AbcSize, Metrics/CyclomaticComplexity, Metrics/MethodLength
node_hash = {MultiXml::CONTENT_ROOT => ""}
name = node_name(node)
# Insert node hash into parent hash correctly.
case hash[name]
when Array
hash[name] << node_hash
when Hash
hash[name] = [hash[name], node_hash]
when NilClass
hash[name] = node_hash
end
# Handle child elements
each_child(node) do |c|
if c.element?
node_to_hash(c, node_hash)
elsif c.text? || c.cdata?
node_hash[MultiXml::CONTENT_ROOT] += c.content
end
end
# Remove content node if it is empty
node_hash.delete(MultiXml::CONTENT_ROOT) if node_hash[MultiXml::CONTENT_ROOT].strip.empty?
# Handle attributes
each_attr(node) do |a|
key = node_name(a)
v = node_hash[key]
node_hash[key] = ((v) ? [a.value, v] : a.value)
end
hash
end
# Parse an XML Document IO into a simple hash.
# xml::
# XML Document IO to parse
def parse(_)
raise(NotImplementedError, "inheritor should define #{__method__}")
end
private
def each_child(*)
raise(NotImplementedError, "inheritor should define #{__method__}")
end
def each_attr(*)
raise(NotImplementedError, "inheritor should define #{__method__}")
end
def node_name(*)
raise(NotImplementedError, "inheritor should define #{__method__}")
end
end
end
end
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