Class: I18nize::Translator

Inherits:
Object
  • Object
show all
Defined in:
lib/i18nize/translator.rb

Overview

Translator for i18nize

Constant Summary collapse

ENDPOINT = 
ENV.fetch("DEEPL_ENDPOINT", "https://api-free.deepl.com/v2/translate")
PLACEHOLDER_RE = 
/%{\s*[^}]+\s*}/

Instance Method Summary collapse

Constructor Details

#initialize(auth_key:, from_lang: "EN", to_lang:) ⇒ Translator

Returns a new instance of Translator.



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# File 'lib/i18nize/translator.rb', line 12

def initialize(auth_key:, from_lang: "EN", to_lang:)
  @auth_key = auth_key
  @from_lang = from_lang
  @to_lang = to_lang
end

Instance Method Details

#translate_texts(texts) ⇒ Object 



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# File 'lib/i18nize/translator.rb', line 18

def translate_texts(texts)
  return [] if texts.empty?

  placeholders = []
  protected = texts.map do |t|
    t.to_s.gsub(PLACEHOLDER_RE) do |m|
      idx = placeholders.size
      placeholders << m
      "__I18NIZE_PLH_#{idx}__"
    end
  end

  uri = URI(ENDPOINT)
  body_params = [
    ["auth_key", @auth_key],
    ["source_lang", @from_lang],
    ["target_lang", @to_lang]
  ] + protected.map { |text| ["text", text] }

  req = Net::HTTP::Post.new(uri)
  req["Content-Type"] = "application/x-www-form-urlencoded"
  req.body = URI.encode_www_form(body_params)

  res = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |h| h.request(req) }
  raise "DeepL API Error: #{res.code} - #{res.body}" unless res.is_a?(Net::HTTPSuccess)

  json = JSON.parse(res.body)
  out = json["translations"].map { |t| t["text"] }

  out.map { |s| s.gsub(/__I18NIZE_PLH_(\d+)__/) { placeholders[::Regexp.last_match(1).to_i] } }
end