discourse/script/pull_translations.rb

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# 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'
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require 'psych'
require 'set'
require 'fileutils'
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require_relative '../lib/i18n/locale_file_walker'
YML_DIRS = ['config/locales',
'plugins/poll/config/locales',
'plugins/discourse-narrative-bot/config/locales',
'plugins/discourse-presence/config/locales']
YML_FILE_PREFIXES = ['server', 'client']
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/client/setup/'
puts '', 'On Mac:', ''
puts ' sudo easy_install pip'
puts ' sudo pip install transifex-client', ''
exit 1
end
if ARGV.include?('force')
STDERR.puts 'Usage: ruby pull_translations.rb [languages]'
STDERR.puts 'Example: ruby pull_translations.rb de it', ''
exit 1
end
def get_languages
if ARGV.empty?
Dir.glob(File.expand_path('../../config/locales/client.*.yml', __FILE__))
.map { |x| x.split('.')[-2] }
else
ARGV
end
end
def yml_path(dir, prefix, language)
path = "../../#{dir}/#{prefix}.#{language}.yml"
File.expand_path(path, __FILE__)
end
languages = get_languages.select { |x| x != 'en' }.sort
# ensure that all locale files exists. tx doesn't create missing locale files during pull
YML_DIRS.each do |dir|
YML_FILE_PREFIXES.each do |prefix|
languages.each do |language|
filename = yml_path(dir, prefix, language)
FileUtils.touch(filename) unless File.exists?(filename)
end
end
end
puts 'Pulling new translations...', ''
command = "tx pull --mode=developer --language=#{languages.join(',')} --force"
return_value = Open3.popen2e(command) do |_, stdout_err, wait_thr|
while (line = stdout_err.gets)
puts line
end
wait_thr.value
end
puts ''
unless return_value.success?
STDERR.puts 'Something failed. Check the output above.', ''
exit return_value.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:
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# https://www.transifex.com/projects/p/discourse-org/
END
def yml_path_if_exists(dir, prefix, language)
path = yml_path(dir, prefix, language)
File.exists?(path) ? path : nil
end
# Add comments to the top of files and replace the language (first key in YAML file)
def update_file_header(filename, language)
lines = File.readlines(filename)
lines.collect! { |line| line.gsub!(/^[a-z_]+:( {})?$/i, "#{language}:\\1") || line }
File.open(filename, 'w+') do |f|
f.puts(YML_FILE_COMMENTS, '') unless lines[0][0] == '#'
f.puts(lines)
end
end
class YamlAliasFinder < LocaleFileWalker
def initialize
@anchors = {}
@aliases = Hash.new { |hash, key| hash[key] = [] }
end
def parse_file(filename)
document = Psych.parse_file(filename)
handle_document(document)
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{ anchors: @anchors, aliases: @aliases }
end
private
def handle_alias(node, depth, parents)
@aliases[node.anchor] << parents.dup
end
def handle_mapping(node, depth, parents)
if node.anchor
@anchors[parents.dup] = node.anchor
end
end
end
class YamlAliasSynchronizer < LocaleFileWalker
def initialize(original_alias_data)
@anchors = original_alias_data[:anchors]
@aliases = original_alias_data[:aliases]
@used_anchors = Set.new
calculate_required_keys
end
def add_to(filename)
stream = Psych.parse_stream(File.read(filename))
stream.children.each { |document| handle_document(document) }
add_aliases
write_yaml(stream, filename)
end
private
def calculate_required_keys
@required_keys = {}
@aliases.each_value do |key_sets|
key_sets.each do |keys|
until keys.empty?
add_needed_node(keys)
keys = keys.dup
keys.pop
end
end
end
add_needed_node([]) unless @required_keys.empty?
end
def add_needed_node(keys)
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@required_keys[keys] = { mapping: nil, scalar: nil, alias: nil }
end
def write_yaml(stream, filename)
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yaml = stream.to_yaml(nil, line_width: -1)
File.open(filename, 'w') do |file|
file.write(yaml)
end
end
def handle_scalar(node, depth, parents)
super(node, depth, parents)
if @required_keys.has_key?(parents)
@required_keys[parents][:scalar] = node
end
end
def handle_alias(node, depth, parents)
if @required_keys.has_key?(parents)
@required_keys[parents][:alias] = node
end
end
def handle_mapping(node, depth, parents)
if @anchors.has_key?(parents)
node.anchor = @anchors[parents]
@used_anchors.add(node.anchor)
end
if @required_keys.has_key?(parents)
@required_keys[parents][:mapping] = node
end
end
def add_aliases
@used_anchors.each do |anchor|
@aliases[anchor].each do |keys|
parents = []
parent_node = @required_keys[[]]
keys.each_with_index do |key, index|
parents << key
current_node = @required_keys[parents]
is_last = index == keys.size - 1
add_node(current_node, parent_node, key, is_last ? anchor : nil)
parent_node = current_node
end
end
end
end
def add_node(node, parent_node, scalar_name, anchor)
parent_mapping = parent_node[:mapping]
parent_mapping.children ||= []
if node[:scalar].nil?
node[:scalar] = Psych::Nodes::Scalar.new(scalar_name)
parent_mapping.children << node[:scalar]
end
if anchor.nil?
if node[:mapping].nil?
node[:mapping] = Psych::Nodes::Mapping.new
parent_mapping.children << node[:mapping]
end
elsif node[:alias].nil?
parent_mapping.children << Psych::Nodes::Alias.new(anchor)
end
end
end
def get_english_alias_data(dir, prefix)
filename = yml_path_if_exists(dir, prefix, 'en')
filename ? YamlAliasFinder.new.parse_file(filename) : nil
end
def add_anchors_and_aliases(english_alias_data, filename)
if english_alias_data
YamlAliasSynchronizer.new(english_alias_data).add_to(filename)
end
end
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def fix_invalid_yml_keys(filename)
lines = File.readlines(filename)
# fix YAML keys which are on the wrong line
lines.each { |line| line.gsub!(/^(.*(?:'|"))(\s*\S*:)$/, "\\1\n\\2") }
File.open(filename, 'w+') do |f|
f.puts(lines)
end
end
def fix_invalid_yml(filename)
lines = File.readlines(filename)
lines.each_with_index do |line, i|
if line =~ /^\s+#.*$/i
# remove comments
lines[i] = nil
elsif line.strip.empty?
# remove empty lines
lines[i] = nil
elsif line =~ /^\s+.*: (?:""|''|)$/i
# remove lines which contain empty string values
lines[i] = nil
elsif line =~ /^(\s)*.*: \|$/i
next_line = i + 1 < lines.size ? lines[i + 1] : nil
if next_line.nil? || line[/^\s*/].size + 2 != next_line[/^\s*/].size
# remove lines which contain the value | without a string in the next line
lines[i] = nil
end
end
end.compact!
loop do
lines.each_with_index do |line, i|
if line =~ /^\s+\w*:\s*$/i
next_line = i + 1 < lines.size ? lines[i + 1] : nil
if next_line.nil? || line[/^\s*/].size >= next_line[/^\s*/].size
# remove lines which have an empty value and are not followed
# by a key on the next level
lines[i] = nil
end
end
end
break if lines.compact!.nil?
end
File.open(filename, 'w+') do |f|
f.puts(lines)
end
end
YML_DIRS.each do |dir|
YML_FILE_PREFIXES.each do |prefix|
english_alias_data = get_english_alias_data(dir, prefix)
languages.each do |language|
filename = yml_path_if_exists(dir, prefix, language)
if filename
# The following methods were added to handle a bug in Transifex's yml. Should not be needed now.
# fix_invalid_yml_keys(filename)
# fix_invalid_yml(filename)
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# TODO check if this is still needed with recent Transifex changes
# Nov 14, 2017: yup, still needed
add_anchors_and_aliases(english_alias_data, filename)
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update_file_header(filename, language)
end
end
end
end