ruby 脚本在本地快速安装所有谷歌webfonts（减去IM Fell）

Posted 2021-05-15

# download all the Google web fonts and install into $HOME/Library/Fonts/
require 'rubygems'
require 'curb'
require 'hpricot'
require 'yaml'

class FontLoader
  attr_accessor :doc

  def initialize(html)
    self.doc = Hpricot html
  end

  def locate
    (doc/'div.download li a').select do|anchor|
      anchor['href']
    end.map {|anchor| anchor['href'] }
  end

  def name
    doc.at('body h2').inner_text
  end

end

class FontIndexer
  attr_accessor :doc

  def initialize(html)
    self.doc = Hpricot html
  end

  def locate
    (doc/'#fontlist a.previewwrapper').select do|anchor|
      anchor['href']
    end.map {|anchor| anchor['href'] }
  end
end

class FontCrawler
  attr_accessor :http, :indexer, :fonts

  def initialize
    self.http = Curl::Easy.new("http://code.google.com/webfonts")
  end

  def prepare
    self.http.http_get
    self.indexer = FontIndexer.new(self.http.body_str)
    puts "index page loaded"
    self.http.reset
  end

  def fetch
    baseurl = "http://code.google.com"
    self.fonts = {}

    list = self.indexer.locate.map {|absurl| baseurl + absurl }
    puts "located #{list.size} fonts"
    puts list.inspect

    Curl::Multi.get(list, :follow_location => true) do|handle|
      loader = FontLoader.new(handle.body_str)
      fonts[loader.name] = loader.locate.map {|absurl| baseurl + absurl }
    end

    puts "#{fonts.size} fonts located saved to fontindex.yml"

    # checkpoint
    File.open("fontindex.yml","wb") do|f|
      f << YAML.dump(fonts)
    end

  end

  def install(fontdir)
    fonts = YAML.load_file("fontindex.yml")
    urls = fonts.map {|k,v| v.first }.compact
    paths = []

    Curl::Multi.download(urls) do|handle, path|
      puts handle.header_str

      filename = handle.header_str.split("\n").select{|hdr| hdr.strip.match(/Content-Disposition:/) }.first.gsub(/.*filename=/,'').gsub(/["']/,'').strip
      content_type = handle.header_str.split("\n").select{|hdr| hdr.strip.match(/Content-Type:/) }.first.split(':').last.strip
      if content_type == 'font/ttf'
        encoding = handle.header_str.split("\n").select{|hdr| hdr.strip.match(/Content-Encoding:/) }.first.split(':').last.strip
        filename += '.gz'
      end

      # prefix google fonts
      filename = "Google-#{filename}"

      puts "downloaded #{path}!"
      downloaded = "#{fontdir}/#{filename}"
      paths << downloaded
      cmd = "/bin/mv #{path} #{downloaded}"
      puts cmd.inspect
      system(cmd)
    end

    puts "installing"
    paths.each do|file|
      if file.match(/.zip/)
        cmd = "cd #{fontdir} && unzip '#{File.basename(file)}' && rm '#{File.basename(file)}'"
        puts cmd.inspect
        system(cmd)
      elsif file.match(/.gz/)
        cmd = "cd #{fontdir} && gzip -d '#{File.basename(file)}'"
        puts cmd.inspect
        system(cmd)
      end
    end

    puts "fonts installed!"

  end

  def self.install(fontdir)
    crawler = self.new
    crawler.prepare
    crawler.fetch
    crawler.install(fontdir)
  end

end

FontCrawler.install File.join(ENV["HOME"], "Library/Fonts")