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Contents
module Nori
# = Nori::Parser
#
# Manages the parser classes. Currently supports:
#
# * REXML
# * Nokogiri
module Parser
# The default parser.
DEFAULT = :rexml
# List of available parsers.
PARSERS = { :rexml => "REXML", :nokogiri => "Nokogiri" }
# Returns the parser to use. Defaults to <tt>Nori::Parser::REXML</tt>.
def self.use
@use ||= DEFAULT
end
# Sets the +parser+ to use. Raises an +ArgumentError+ unless the +parser+ exists.
def self.use=(parser)
validate_parser! parser
@use = parser
end
# Returns the parsed +xml+ using the parser to use. Raises an +ArgumentError+
# unless the optional or default +parser+ exists.
def self.parse(xml, parser = nil)
load_parser(parser).parse xml
end
private
# Raises an +ArgumentError+ unless the +parser+ exists.
def self.validate_parser!(parser)
raise ArgumentError, "Invalid Nori parser: #{parser}" unless PARSERS[parser]
end
# Requires and returns the +parser+ to use.
def self.load_parser(parser)
parser ||= use
validate_parser! parser
require "nori/parser/#{parser}"
const_get PARSERS[parser]
end
end
end
Version data entries
10 entries across 10 versions & 2 rubygems