NHK RADIO Grabber

grab.rb

#!/usr/bin/env ruby

require 'open-uri'
require "nokogiri"

xmls = [
    "https://cgi2.nhk.or.jp/gogaku/st/xml/english/kaiwa/listdataflv.xml",
    "https://cgi2.nhk.or.jp/gogaku/st/xml/english/timetrial/listdataflv.xml",
    "https://cgi2.nhk.or.jp/gogaku/st/xml/english/business1/listdataflv.xml",
]

xmls.each do |xml|
    doc = Nokogiri::HTML.parse(open(xml))
    doc.css("music").each do |music|
        filename = sprintf("%s.aac", music.attribute("hdate")).encode("UTF-8-MAC", "UTF-8")
        dirname  = sprintf("./%s/",  music.attribute("title")).encode("UTF-8-MAC", "UTF-8")
        url      = sprintf "https://nhk-vh.akamaihd.net/i/gogaku-stream/mp4/%s/master.m3u8", music.attribute("file").to_s
        command  = sprintf "ffmpeg -n -vn -i %s -acodec copy '%s/%s'", url, dirname, filename

        Dir.mkdir dirname unless Dir.exist? dirname
        system command
    end
end