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i18n.rb
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i18n.rb
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# frozen_string_literal: true
require 'yaml'
module Liquid
class I18n
DEFAULT_LOCALE = File.join(File.expand_path(__dir__), "locales", "en.yml")
TranslationError = Class.new(StandardError)
attr_reader :path
def initialize(path = DEFAULT_LOCALE)
@path = path
end
def translate(name, vars = {})
interpolate(deep_fetch_translation(name), vars)
end
alias_method :t, :translate
def locale
@locale ||= YAML.load_file(@path)
end
private
def interpolate(name, vars)
name.gsub(/%\{(\w+)\}/) do
# raise TranslationError, "Undefined key #{$1} for interpolation in translation #{name}" unless vars[$1.to_sym]
(vars[Regexp.last_match(1).to_sym]).to_s
end
end
def deep_fetch_translation(name)
name.split('.').reduce(locale) do |level, cur|
level[cur] || raise(TranslationError, "Translation for #{name} does not exist in locale #{path}")
end
end
end
end