module GettextI18nRailsJs::Parser::Base

Attributes

gettext_function[RW]

The gettext function name can be configured at the module level as gettext_function. This is to provide a way to avoid conflicts with other javascript libraries. You only need to define the base function name to replace “_” and all the other variants (s_, n_, N_) will be deduced automatically.

Public Instance Methods

parse(file, _msgids = []) click to toggle source

We're lazy and klumsy, so this is a regex based parser that looks for invocations of the various gettext functions. Once captured, we scan them once again to fetch all the function arguments. Invoke regex captures like this:

javascript source: “#{ __('hello') } #{ __(”wor)ld“) }” matches: [0]: __('hello') [1]: __ [2]: 'hello'

javascript source: __('item', 'items', 33) matches: [0]: __('item', 'items', 33) [1]: __ [2]: 'item', 'items', 33

handlebars source: “{{ _ ”foo“}}” matches: [0]: __('foo') [1]: __ [2]: 'foo'

handlebars source: “{{ _ ”foo“ ”foos“ 3}}” matches: [0]: __('foo', 'foos', 3) [1]: __ [2]: 'foo', 'foos', 3

# File lib/gettext_i18n_rails_js/parser/base.rb, line 72
def parse(file, _msgids = [])
  collect_for(file) do |function, arguments, line|
    key = arguments.scan(
      /('(?:[^'\\]|\\.)*'|"(?:[^"\\]|\\.)*")/
    ).collect do |match|
      match.first[1..-2]
    end.join(separator_for(function))

    next if key == ""
    results_for(key, file, line)
  end
end

Protected Instance Methods

cleanup_value(value) click to toggle source
# File lib/gettext_i18n_rails_js/parser/base.rb, line 87
def cleanup_value(value)
  value
    .tr("\n", "\n")
    .tr("\t", "\t")
    .tr("\0", "\0")
end
results_for(key, file, line) click to toggle source
# File lib/gettext_i18n_rails_js/parser/base.rb, line 102
def results_for(key, file, line)
  [
    cleanup_value(key),
    [file, line].join(":")
  ]
end
separator_for(value) click to toggle source
# File lib/gettext_i18n_rails_js/parser/base.rb, line 94
def separator_for(value)
  if value == "n#{gettext_function}"
    "\000"
  else
    "\004"
  end
end