Add script/pull_translations. It pulls translations from Transifex, and does some post-processing on the files.

script/pull_translations.rb

@@ -0,0 +1,81 @@
+# This script pulls translation files from Transifex and ensures they are in the format we need.
+# You need the Transifex client installed.
+# http://docs.transifex.com/developer/client/setup
+#
+# Don't use this script to create pull requests. Do translations in Transifex. The Discourse
+# team will pull them in.
+
+require 'open3'
+
+if `which tx`.strip.empty?
+  puts "", "The Transifex client needs to be installed to use this script."
+  puts "Instructions are here: http://docs.transifex.com/developer/client/setup"
+  puts "", "On Mac:", ""
+  puts "  curl -O https://raw.github.com/pypa/pip/master/contrib/get-pip.py"
+  puts "  sudo python get-pip.py"
+  puts "  sudo pip install transifex-client", ""
+  exit 1
+end
+
+puts "Pulling new translations...", ""
+# TODO: The following tx command may need to always use "-f" to force pull all translations.
+#       I don't understand how it decides to skip some files, but it seems to skip
+#       even when there are new translations on the server sometimes.
+Open3.popen2e('tx pull --mode=developer') do |stdin, stdout_err, wait_thr|
+  while line = stdout_err.gets
+    puts line
+  end
+end
+puts ""
+
+if !$?.success?
+  puts "Something failed. Check the output above.", ""
+  exit $?.exitstatus
+end
+
+yml_file_comments = <<END
+# encoding: utf-8
+#
+# Never edit this file. It will be overwritten when translations are pulled from Transifex.
+#
+# To work with us on translations, join this project:
+# https://www.transifex.com/projects/p/discourse-pt-br/
+END
+
+# Change root element in yml files for some languages because Transifex uses a different
+# locale code.
+[['fr', 'fr_FR'], ['es', 'es_ES'], ['pt', 'pt_PT'], ['ko', 'ko_KR']].each do |ours, theirs|
+  ['client', 'server'].each do |base|
+    contents = []
+    file_name = File.expand_path("../../config/locales/#{base}.#{ours}.yml", __FILE__)
+    found = false
+    next unless File.exists?(file_name)
+    File.open(file_name, 'r') do |file|
+      file.each_line do |line|
+        if found or line.strip != "#{theirs}:"
+          contents << line
+        else
+          contents << "#{ours}:"
+          found = true
+        end
+      end
+    end
+
+    File.open(file_name, 'w+') do |f|
+      f.puts(yml_file_comments, '') unless contents[0][0] == '#'
+      f.puts contents
+    end
+  end
+end
+
+(Dir.glob( File.expand_path("../../config/locales/client.*.yml", __FILE__) ).map {|x| x.split('.')[-2]}.sort - ['fr', 'es', 'pt', 'ko']).each do |locale|
+  ['client', 'server'].each do |base|
+    file_name = File.expand_path("../../config/locales/#{base}.#{locale}.yml", __FILE__)
+    next unless File.exists?(file_name)
+    contents = File.readlines(file_name)
+    File.open(file_name, 'w+') do |f|
+      f.puts(yml_file_comments, '') unless contents[0][0] == '#'
+      f.puts contents
+    end
+  end
+end