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Versions: 30
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Contents
require "fileutils"
module I18n
module JS
class Middleware
def initialize(app)
@app = app
clear_cache
end
def call(env)
@cache = nil
verify_locale_files!
@app.call(env)
end
private
def cache_path
@cache_path ||= cache_dir.join("i18n-js.yml")
end
def cache_dir
@cache_dir ||= Rails.root.join("tmp/cache")
end
def cache
@cache ||= begin
if cache_path.exist?
YAML.load_file(cache_path) || {}
else
{}
end
end
end
def clear_cache
# `File.delete` will raise error when "multiple worker"
# Are running at the same time, like in a parallel test
#
# `FileUtils.rm_f` is tested manually
#
# See https://github.com/fnando/i18n-js/issues/436
FileUtils.rm_f(cache_path) if File.exist?(cache_path)
end
def save_cache(new_cache)
# path could be a symbolic link
FileUtils.mkdir_p(cache_dir) unless File.exists?(cache_dir)
File.open(cache_path, "w+") do |file|
file << new_cache.to_yaml
end
end
# Check if translations should be regenerated.
# ONLY REGENERATE when these conditions are met:
#
# # Cache file doesn't exist
# # Translations and cache size are different (files were removed/added)
# # Translation file has been updated
#
def verify_locale_files!
valid_cache = []
new_cache = {}
valid_cache.push cache_path.exist?
valid_cache.push ::I18n.load_path.uniq.size == cache.size
::I18n.load_path.each do |path|
changed_at = File.mtime(path).to_i
valid_cache.push changed_at == cache[path]
new_cache[path] = changed_at
end
return if valid_cache.all?
save_cache(new_cache)
::I18n::JS.export
end
end
end
end
Version data entries
30 entries across 30 versions & 1 rubygems