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|
# frozen_string_literal: true
require 'slim'
module Slim
# @api private
class Translator < Filter
define_options :tr,
tr_mode: :dynamic,
tr_fn: '_'
if defined?(::I18n)
set_options tr_fn: '::Slim::Translator.i18n_text',
tr: true
elsif defined?(::GetText)
set_options tr_fn: '::GetText._',
tr: true
elsif defined?(::FastGettext)
set_options tr_fn: '::FastGettext::Translation._',
tr: true
end
def self.i18n_text(text)
I18n.t!(text)
rescue I18n::MissingTranslationData
text
end
def self.i18n_key(text)
key = text.parameterize.underscore
I18n.t!(key)
rescue I18n::MissingTranslationData
text
end
def call(exp)
options[:tr] ? super : exp
end
def initialize(opts = {})
super
case options[:tr_mode]
when :static
@translator = StaticTranslator.new(tr_fn: options[:tr_fn])
when :dynamic
@translator = DynamicTranslator.new(tr_fn: options[:tr_fn])
else
raise ArgumentError, "Invalid translator mode #{options[:tr_mode].inspect}"
end
end
def on_slim_text(type, exp)
[:slim, :text, type, @translator.call(exp)]
end
private
class StaticTranslator < Filter
define_options :tr_fn
def initialize(opts = {})
super
@translate = eval("proc {|string| #{options[:tr_fn]}(string) }")
end
def call(exp)
@text, @captures = ''.dup, []
result = compile(exp)
text = @translate.call(@text)
while text =~ /%(\d+)/
result << [:static, $`] << @captures[$1.to_i - 1]
text = $'
end
result << [:static, text]
end
def on_static(text)
@text << text
[:multi]
end
def on_slim_output(escape, code, content)
@captures << [:slim, :output, escape, code, content]
@text << "%#{@captures.size}"
[:multi]
end
end
class DynamicTranslator < Filter
define_options :tr_fn
def call(exp)
@captures_count, @captures_var, @text = 0, unique_name, ''.dup
result = compile(exp)
if @captures_count > 0
result.insert(1, [:code, "#{@captures_var}=[]"])
result << [:slim, :output, false, "#{options[:tr_fn]}(#{@text.inspect}).gsub(/%(\\d+)/) { #{@captures_var}[$1.to_i-1] }", [:multi]]
else
result << [:slim, :output, false, "#{options[:tr_fn]}(#{@text.inspect})", [:multi]]
end
end
def on_static(text)
@text << text
[:multi]
end
def on_slim_output(escape, code, content)
@captures_count += 1
@text << "%#{@captures_count}"
[:capture, "#{@captures_var}[#{@captures_count - 1}]", [:slim, :output, escape, code, content]]
end
end
end
end
Slim::Engine.before Slim::EndInserter, Slim::Translator
|
