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Contents
# coding: utf-8
module ONIX
# A utility class that processes the code list XSD from the ONIX spec and
# creates a set of TSV files. The generated files are used by this library
# to make hashes of the code lists available to users.
#
class CodeListExtractor
# Creates a new extractor. Expects the path to a copy of the code lists
# file from the spec (called ONIX_BookProduct_CodeLists.xsd on my system).
#
def initialize(filename)
raise ArgumentError, "#{filename} not found" unless File.file?(filename)
@filename = filename
end
# generate a set of TSV files in the given directory. Creates the directory
# if it doesn't exist and will overwrite existing files.
#
def run(dir)
FileUtils.mkdir_p(dir) unless File.directory?(dir)
each_list do |number, data|
#puts number
file = number.to_s.rjust(3, "0") + ".tsv"
path = File.join(dir, file)
File.open(path, "w") { |f| f.write data}
end
end
private
def data
@data ||= File.open(@filename) { |f| f.read }
end
def document
@document ||= Nokogiri::XML(data)
@document.remove_namespaces! if @document.namespaces.size > 0
@document
end
def each_list(&block)
document.xpath("//simpleType").each do |node|
list_name = node.xpath("./@name").first.value
list_number = list_name[/List(\d+)/,1].to_i
if list_number > 0
yield list_number, list_data(list_number)
end
end
end
def list_data(num)
str = ""
nodes = document.xpath("//simpleType[@name='List#{num}']/restriction/enumeration")
nodes.each do |node|
code = node.xpath("./@value").first.value
desc = node.xpath("./annotation/documentation").first.text
ldesc = node.xpath("./annotation/documentation").last.text
str += "#{code}\t#{desc}\t#{ldesc}\n"
end
str
end
end
end
Version data entries
15 entries across 15 versions & 2 rubygems