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# frozen_string_literal: true
require 'fast_gettext/vendor/mofile'
module FastGettext
# Responsibility:
# - abstract mo files for Mo Repository
class MoFile
PLURAL_SEPARATOR = "\000"
CONTEXT_SEPARATOR = "\004"
# file => path or FastGettext::GetText::MOFile
def initialize(file, options = {})
@filename = file
@data = nil
load_data if options[:eager_load]
end
def [](key)
data[key]
end
# returns the plural forms or all singular translations that where found
# Car, Cars => [Auto,Autos] or []
def plural(*msgids)
split_plurals(self[msgids * PLURAL_SEPARATOR].to_s)
end
def pluralisation_rule
# gettext uses 0 as default rule, which would turn off all pluralisation, very clever...
# additionally parsing fails when directly accessing po files, so this line was taken from gettext/mofile
(data[''] || '').split("\n").each do |line|
if /^Plural-Forms:\s*nplurals\s*\=\s*(\d*);\s*plural\s*\=\s*([^;]*)\n?/ =~ line
return ->(n) do # rubocop:disable Lint/UnusedBlockArgument
eval($2) # rubocop:disable Security/Eval
end
end
end
nil
end
def data
load_data if @data.nil?
@data
end
def self.empty
@empty ||= MoFile.new(File.join(__dir__, 'vendor', 'empty.mo'), eager_load: true).freeze
end
private
def load_data
@data =
if @filename.is_a? FastGettext::GetText::MOFile
@filename
else
FastGettext::GetText::MOFile.open(@filename, "UTF-8")
end
make_singular_and_plural_available
end
# (if plural==singular, prefer singular)
def make_singular_and_plural_available
data = {}
@data.each do |key, translation|
next unless key.include? PLURAL_SEPARATOR
singular, plural = split_plurals(key)
translation = split_plurals(translation)
data[singular] ||= translation[0]
data[plural] ||= translation[1]
end
@data.merge!(data) { |_key, old, _new| old }
end
def split_plurals(singular_plural)
singular_plural.split(PLURAL_SEPARATOR)
end
end
end
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