First version of Rakefile.

.gitignore

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+_drafts
+_site
+
+# Rakefile junk
+temp.pgn

Rakefile

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+# -*- coding: utf-8 -*-
+require 'rake'
+tournament='autumn2013'
+
+# Fix the game date in PNG: YYYY-MM-DD -> YYYY.MM.DD
+def fix_date
+  str = File.open('temp.pgn', 'r') { |f| f.read }
+  parts = str.partition /^\[Date \"\d{4}-\d{2}-\d{2}\"\]$/
+  if parts[1].empty?
+    puts "The game date is already correct"
+  else
+    parts[1].gsub! '-', '.'
+    File.open('temp.pgn', 'w+') do |f|
+      f.write(parts[0] + parts[1] + parts[2])
+    end
+    puts "The game date corrected"
+  end
+end
+
+# Return the directory name to put PGN file in
+def pgn_dir
+  str = File.open('temp.pgn', 'r') { |f| f.read }
+
+  date = str.scan(/^\[Date \"(.*)\"\]$/)[0][0]
+  date.gsub! '-', '.' # if date has not been corrected
+  white = str.scan(/^\[White \"(.*)\"\]$/)[0][0]
+  black = str.scan(/^\[Black \"(.*)\"\]$/)[0][0]
+
+  dir = date + ' — ' + white + ' vs. ' + black
+  return dir
+end
+
+# Return the file name to move PGN file to
+def pgn_file dir
+  file = (Dir.entries(dir).length - 1).to_s + '.pgn'
+  if File.exists? (dir + '/' + file)
+    abort "Something wrong: PGN file already exists"
+  end
+  file
+end
+
+namespace :pgn do
+  desc "Parse a web page of lichess.org and save the PGN to temp file"
+  task :get do |t, args|
+    require 'nokogiri'
+    require 'open-uri'
+
+    doc = Nokogiri::HTML open ENV['url']
+    link = doc.css('a.view_pgn_toggle').first
+    pgn_url = 'http://lichess.org' + link['href']
+    str = URI.parse(pgn_url).read
+    File.open('temp.pgn', 'w') { |f| f.write str }
+    fix_date # fix the game date
+  end
+
+  desc "Move PNG into the directory of destination"
+  task :mv do
+    require 'fileutils'
+
+    tour = ('0' + ENV['tour'])[-2..-1] # change `1' -> `01' and so on
+    dir = tournament + '/tour_' + tour + '/' + pgn_dir
+    if Dir.exists? dir
+      puts "PGN directory exists"
+    else
+      puts "Directory \"#{dir.shellescape}\" doesn't exist. Create it?"
+      answer = $stdin.gets.chomp
+      if ['Yes', 'yes', 'y'].include? answer
+        FileUtils.mkdir_p dir
+      else
+        abort "PGN directory wasn't created"
+      end
+    end
+    dest = dir + '/' + pgn_file(dir)
+    puts "Moving PGN file to \"#{dest.shellescape}\""
+    FileUtils.mv('temp.pgn', dest)
+  end
+
+  desc "Download and move PGN file at once"
+  task :create do
+    Rake::Task['pgn:get'].invoke
+    Rake::Task['pgn:mv'].invoke
+  end
+end