create_patch.rb

#!/usr/local/bin/ruby1.9

require 'rubygems'
require 'hpricot'
require 'pathname'
require 'yaml'
require 'yaml_waml'
require File.join(File.dirname(__FILE__), 'string_table')

orig_dir = Pathname.new(ARGV.shift)
jp_dir = Pathname.new(ARGV.shift)
mod_dir = Pathname.new(ARGV.shift)

diff = Hash.new
Pathname.glob(File.join(jp_dir, '**/*.xml')) do |xmlpath|
  orig_dic = Hash.new
  relpath = xmlpath.to_s.gsub(/^#{jp_dir}(?:#{Pathname::SEPARATOR_PAT})?/, '')

  # 日本語 MOD の xml を読み込み
  jp_table = StringTable.new(xmlpath, 'cp932')
  # 元 xml を読み込み
  orig_table = StringTable.new(orig_dir + relpath, 'iso-8859-1')

  # MOD の xml を読み込み
  mod_table = StringTable.new(mod_dir + relpath, 'iso-8859-1') rescue nil

  jp_table.each do |id, text|
    orig_text = orig_table[id]
    mod_text = mod_table ? mod_table[id] : nil
    if orig_text != text
      diff[relpath] ||= Hash.new
      diff[relpath][id] ||= Hash.new
      diff[relpath][id]['orig'] = orig_text
      diff[relpath][id]['mod'] = mod_text if mod_text
      if mod_text and mod_text != orig_text
        diff[relpath][id]['jp'] = "[FUZZ] #{text}"
      else
        diff[relpath][id]['jp'] = text
      end
    end
  end
end

puts diff.to_yaml

merge_patch.rb

#!/usr/local/bin/ruby1.9

require 'rubygems'
require 'hpricot'
require 'pathname'
require 'yaml'
require File.join(File.dirname(__FILE__), 'string_table')

orig_dir = Pathname.new(ARGV.shift)
mod_dir = Pathname.new(ARGV.shift)
patch_dir = Pathname.new(ARGV.shift)
merged_dir = Pathname.new(ARGV.shift || 'gamedata_merged')

diff = YAML.load(File.open(patch_dir, 'r:utf-8') { |fh| fh.read })
diff.each_pair do |relpath, dichash|
  xmlpath = mod_dir + relpath
  xmlpath = orig_dir + relpath unless xmlpath.file?
  warn "[ERROR] #{xmlpath} is not exists." unless xmlpath.file?
  doc = Hpricot.XML(xmlpath.read)
  if xmldecl = doc.at('?xml') and xmldecl.xmldecl?
    xmldecl.encoding = 'Shift_JIS'
  end
  doc.search('//string[@id]') do |string|
    id = string.attributes['id']
    if dic = dichash[id]
      text = dic['jp'] || dic['mod'] || dic['orig']
      text = text.sub(/^\[FUZZ\] /, '')
      string.at('/text').inner_html = text.encode('cp932', :invalid => :replace, :undef => :replace)
    end
  end
  merged_xmlpath = merged_dir + relpath
  merged_xmlpath.dirname.mkpath unless merged_xmlpath.dirname.directory?
  merged_xmlpath.open('w') {|fh| fh << doc.to_s }
  puts "wrote: #{merged_xmlpath}"
end

string_table.rb

class StringTable
  def initialize(xmlpath, enc)
    @table = Hash.new
    unless File.exists?(xmlpath)
      raise StandardError, "ERROR: #{xmlpath} is not exists."
    end
    xml = File.open(xmlpath, "r:#{enc}") { |fh| fh.read }
    doc = Hpricot.XML(xml.encode('utf-8', :invalid => :replace, :undef => :replace))
    doc.search('//string[@id]') do |string|
      id = string.attributes['id']
      text = string.at('/text').inner_html
      @table[id] = text
    end
  end

  def method_missing(message, *arg, &block)
    @table.send(message, *arg, &block)
  end
end