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require 'fast_gettext/translation_repository/po'
module FastGettext
module TranslationRepository
# Responsibility:
# - merge data from multiple repositories into one hash structure
# - can be used instead of searching for translations in multiple domains
# - requires reload when current locale is changed
class Merge < Base
def initialize(name, options={})
clear
super(name, options)
options.fetch(:chain, []).each do |repo|
add_repo(repo)
end
end
def available_locales
@repositories.flat_map(&:available_locales).uniq
end
def pluralisation_rule
@repositories.each do |r|
result = r.pluralisation_rule and return result
end
nil
end
def plural(*keys)
@repositories.each do |r|
result = r.plural(*keys)
return result unless result.compact.empty?
end
[]
end
def reload
@data = {}
@repositories.each do |r|
r.reload
load_repo(r)
end
super
end
def add_repo(repo)
raise "Unsupported repository" unless repo_supported?(repo)
@repositories << repo
load_repo(repo)
true
end
def [](key)
@data[key]
end
def clear
@repositories = []
@data = {}
end
protected
def repo_supported?(repo)
repo.respond_to?(:all_translations)
end
def load_repo(r)
@data = r.all_translations.merge(@data)
end
end
end
end
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