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require "nori/version"
require "nori/core_ext"
require "nori/xml_utility_node"
class Nori
def self.hash_key(name, options = {})
name = name.tr("-", "_") if options[:convert_dashes_to_underscores]
name = name.split(":").last if options[:strip_namespaces]
name = options[:convert_tags_to].call(name) if options[:convert_tags_to].respond_to? :call
name
end
PARSERS = { :rexml => "REXML", :nokogiri => "Nokogiri" }
def initialize(options = {})
defaults = {
:strip_namespaces => false,
:delete_namespace_attributes => false,
:convert_tags_to => nil,
:convert_attributes_to => nil,
:empty_tag_value => nil,
:advanced_typecasting => true,
:convert_dashes_to_underscores => true,
:parser => :nokogiri
}
validate_options! defaults.keys, options.keys
@options = defaults.merge(options)
end
def find(hash, *path)
return hash if path.empty?
key = path.shift
key = self.class.hash_key(key, @options)
value = find_value(hash, key)
find(value, *path) if value
end
def parse(xml)
cleaned_xml = xml.strip
return {} if cleaned_xml.empty?
parser = load_parser @options[:parser]
parser.parse(cleaned_xml, @options)
end
private
def load_parser(parser)
require "nori/parser/#{parser}"
Parser.const_get PARSERS[parser]
end
# Expects a +block+ which receives a tag to convert.
# Accepts +nil+ for a reset to the default behavior of not converting tags.
def convert_tags_to(reset = nil, &block)
@convert_tag = reset || block
end
def validate_options!(available_options, options)
spurious_options = options - available_options
unless spurious_options.empty?
raise ArgumentError, "Spurious options: #{spurious_options.inspect}\n" \
"Available options are: #{available_options.inspect}"
end
end
def find_value(hash, key)
hash.each do |k, v|
key_without_namespace = k.to_s.split(':').last
return v if key_without_namespace == key.to_s
end
nil
end
end
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