301 lines
10 KiB
Ruby
301 lines
10 KiB
Ruby
# Copyright (c) 2005-2006 David Barri
|
|
|
|
require 'yaml'
|
|
require 'gloc-internal'
|
|
require 'gloc-helpers'
|
|
|
|
module GLoc
|
|
UTF_8= 'utf-8'
|
|
SHIFT_JIS= 'sjis'
|
|
EUC_JP= 'euc-jp'
|
|
|
|
# This module will be included in both instances and classes of GLoc includees.
|
|
# It is also included as class methods in the GLoc module itself.
|
|
module InstanceMethods
|
|
include Helpers
|
|
|
|
# Returns a localized string.
|
|
def l(symbol, *arguments)
|
|
return GLoc._l(symbol,current_language,*arguments)
|
|
end
|
|
|
|
# Returns a localized string in a specified language.
|
|
# This does not effect <tt>current_language</tt>.
|
|
def ll(lang, symbol, *arguments)
|
|
return GLoc._l(symbol,lang.to_sym,*arguments)
|
|
end
|
|
|
|
# Returns a localized string if the argument is a Symbol, else just returns the argument.
|
|
def ltry(possible_key)
|
|
possible_key.is_a?(Symbol) ? l(possible_key) : possible_key
|
|
end
|
|
|
|
# Uses the default GLoc rule to return a localized string.
|
|
# See lwr_() for more info.
|
|
def lwr(symbol, *arguments)
|
|
lwr_(:default, symbol, *arguments)
|
|
end
|
|
|
|
# Uses a <em>rule</em> to return a localized string.
|
|
# A rule is a function that uses specified arguments to return a localization key prefix.
|
|
# The prefix is appended to the localization key originally specified, to create a new key which
|
|
# is then used to lookup a localized string.
|
|
def lwr_(rule, symbol, *arguments)
|
|
GLoc._l("#{symbol}#{GLoc::_l_rule(rule,current_language).call(*arguments)}",current_language,*arguments)
|
|
end
|
|
|
|
# Returns <tt>true</tt> if a localized string with the specified key exists.
|
|
def l_has_string?(symbol)
|
|
return GLoc._l_has_string?(symbol,current_language)
|
|
end
|
|
|
|
# Sets the current language for this instance/class.
|
|
# Setting the language of a class effects all instances unless the instance has its own language defined.
|
|
def set_language(language)
|
|
GLoc.current_language = language
|
|
end
|
|
|
|
# Sets the current language if the language passed is a valid language.
|
|
# If the language was valid, this method returns <tt>true</tt> else it will return <tt>false</tt>.
|
|
# Note that <tt>nil</tt> is not a valid language.
|
|
# See set_language(language) for more info.
|
|
def set_language_if_valid(language)
|
|
if GLoc.valid_language?(language)
|
|
set_language(language)
|
|
true
|
|
else
|
|
false
|
|
end
|
|
end
|
|
end
|
|
|
|
#---------------------------------------------------------------------------
|
|
# Instance
|
|
|
|
include ::GLoc::InstanceMethods
|
|
# Returns the instance-level current language, or if not set, returns the class-level current language.
|
|
def current_language
|
|
GLoc.current_language
|
|
end
|
|
|
|
#---------------------------------------------------------------------------
|
|
# Class
|
|
|
|
# All classes/modules that include GLoc will also gain these class methods.
|
|
# Notice that the GLoc::InstanceMethods module is also included.
|
|
module ClassMethods
|
|
include ::GLoc::InstanceMethods
|
|
# Returns the current language, or if not set, returns the GLoc current language.
|
|
def current_language
|
|
GLoc.current_language
|
|
end
|
|
end
|
|
|
|
def self.included(target) #:nodoc:
|
|
super
|
|
class << target
|
|
include ::GLoc::ClassMethods
|
|
end
|
|
end
|
|
|
|
#---------------------------------------------------------------------------
|
|
# GLoc module
|
|
|
|
class << self
|
|
include ::GLoc::InstanceMethods
|
|
|
|
@@current_language = nil
|
|
|
|
# Returns the current language
|
|
def current_language
|
|
@@current_language || GLoc::CONFIG[:default_language]
|
|
end
|
|
|
|
def current_language=(lang)
|
|
@@current_language = lang.blank? ? nil : lang.to_sym
|
|
end
|
|
|
|
# Adds a collection of localized strings to the in-memory string store.
|
|
def add_localized_strings(lang, symbol_hash, override=true, strings_charset=nil)
|
|
_verbose_msg {"Adding #{symbol_hash.size} #{lang} strings."}
|
|
_add_localized_strings(lang, symbol_hash, override, strings_charset)
|
|
_verbose_msg :stats
|
|
end
|
|
|
|
# Creates a backup of the internal state of GLoc (ie. strings, langs, rules, config)
|
|
# and optionally clears everything.
|
|
def backup_state(clear=false)
|
|
s= _get_internal_state_vars.map{|o| o.clone}
|
|
_get_internal_state_vars.each{|o| o.clear} if clear
|
|
s
|
|
end
|
|
|
|
# Removes all localized strings from memory, either of a certain language (or languages),
|
|
# or entirely.
|
|
def clear_strings(*languages)
|
|
if languages.empty?
|
|
_verbose_msg {"Clearing all strings"}
|
|
LOCALIZED_STRINGS.clear
|
|
LOWERCASE_LANGUAGES.clear
|
|
else
|
|
languages.each {|l|
|
|
_verbose_msg {"Clearing :#{l} strings"}
|
|
l= l.to_sym
|
|
LOCALIZED_STRINGS.delete l
|
|
LOWERCASE_LANGUAGES.each_pair {|k,v| LOWERCASE_LANGUAGES.delete k if v == l}
|
|
}
|
|
end
|
|
end
|
|
alias :_clear_strings :clear_strings
|
|
|
|
# Removes all localized strings from memory, except for those of certain specified languages.
|
|
def clear_strings_except(*languages)
|
|
clear= (LOCALIZED_STRINGS.keys - languages)
|
|
_clear_strings(*clear) unless clear.empty?
|
|
end
|
|
|
|
# Returns the charset used to store localized strings in memory.
|
|
def get_charset(lang)
|
|
CONFIG[:internal_charset_per_lang][lang] || CONFIG[:internal_charset]
|
|
end
|
|
|
|
# Returns a GLoc configuration value.
|
|
def get_config(key)
|
|
CONFIG[key]
|
|
end
|
|
|
|
# Loads the localized strings that are included in the GLoc library.
|
|
def load_gloc_default_localized_strings(override=false)
|
|
GLoc.load_localized_strings "#{File.dirname(__FILE__)}/../lang", override
|
|
end
|
|
|
|
# Loads localized strings from all yml files in the specifed directory.
|
|
def load_localized_strings(dir=nil, override=true)
|
|
_charset_required
|
|
_get_lang_file_list(dir).each {|filename|
|
|
|
|
# Load file
|
|
raw_hash = YAML::load(File.read(filename))
|
|
raw_hash={} unless raw_hash.kind_of?(Hash)
|
|
filename =~ /([^\/\\]+)\.ya?ml$/
|
|
lang = $1.to_sym
|
|
file_charset = raw_hash['file_charset'] || UTF_8
|
|
|
|
# Convert string keys to symbols
|
|
dest_charset= get_charset(lang)
|
|
_verbose_msg {"Reading file #{filename} [charset: #{file_charset} --> #{dest_charset}]"}
|
|
symbol_hash = {}
|
|
Iconv.open(dest_charset, file_charset) do |i|
|
|
raw_hash.each {|key, value|
|
|
symbol_hash[key.to_sym] = i.iconv(value)
|
|
}
|
|
end
|
|
|
|
# Add strings to repos
|
|
_add_localized_strings(lang, symbol_hash, override)
|
|
}
|
|
_verbose_msg :stats
|
|
end
|
|
|
|
# Restores a backup of GLoc's internal state that was made with backup_state.
|
|
def restore_state(state)
|
|
_get_internal_state_vars.each do |o|
|
|
o.clear
|
|
o.send o.respond_to?(:merge!) ? :merge! : :concat, state.shift
|
|
end
|
|
end
|
|
|
|
# Sets the charset used to internally store localized strings.
|
|
# You can set the charset to use for a specific language or languages,
|
|
# or if none are specified the charset for ALL localized strings will be set.
|
|
def set_charset(new_charset, *langs)
|
|
CONFIG[:internal_charset_per_lang] ||= {}
|
|
|
|
# Convert symbol shortcuts
|
|
if new_charset.is_a?(Symbol)
|
|
new_charset= case new_charset
|
|
when :utf8, :utf_8 then UTF_8
|
|
when :sjis, :shift_jis, :shiftjis then SHIFT_JIS
|
|
when :eucjp, :euc_jp then EUC_JP
|
|
else new_charset.to_s
|
|
end
|
|
end
|
|
|
|
# Convert existing strings
|
|
(langs.empty? ? LOCALIZED_STRINGS.keys : langs).each do |lang|
|
|
cur_charset= get_charset(lang)
|
|
if cur_charset && new_charset != cur_charset
|
|
_verbose_msg {"Converting :#{lang} strings from #{cur_charset} to #{new_charset}"}
|
|
Iconv.open(new_charset, cur_charset) do |i|
|
|
bundle= LOCALIZED_STRINGS[lang]
|
|
bundle.each_pair {|k,v| bundle[k]= i.iconv(v)}
|
|
end
|
|
end
|
|
end
|
|
|
|
# Set new charset value
|
|
if langs.empty?
|
|
_verbose_msg {"Setting GLoc charset for all languages to #{new_charset}"}
|
|
CONFIG[:internal_charset]= new_charset
|
|
CONFIG[:internal_charset_per_lang].clear
|
|
else
|
|
langs.each do |lang|
|
|
_verbose_msg {"Setting GLoc charset for :#{lang} strings to #{new_charset}"}
|
|
CONFIG[:internal_charset_per_lang][lang]= new_charset
|
|
end
|
|
end
|
|
end
|
|
|
|
# Sets GLoc configuration values.
|
|
def set_config(hash)
|
|
CONFIG.merge! hash
|
|
end
|
|
|
|
# Sets the $KCODE global variable according to a specified charset, or else the
|
|
# current default charset for the default language.
|
|
def set_kcode(charset=nil)
|
|
_charset_required
|
|
charset ||= get_charset(current_language)
|
|
$KCODE= case charset
|
|
when UTF_8 then 'u'
|
|
when SHIFT_JIS then 's'
|
|
when EUC_JP then 'e'
|
|
else 'n'
|
|
end
|
|
_verbose_msg {"$KCODE set to #{$KCODE}"}
|
|
end
|
|
|
|
# Tries to find a valid language that is similar to the argument passed.
|
|
# Eg. :en, :en_au, :EN_US are all similar languages.
|
|
# Returns <tt>nil</tt> if no similar languages are found.
|
|
def similar_language(lang)
|
|
return nil if lang.nil?
|
|
return lang.to_sym if valid_language?(lang)
|
|
# Check lowercase without dashes
|
|
lang= lang.to_s.downcase.gsub('-','_')
|
|
return LOWERCASE_LANGUAGES[lang] if LOWERCASE_LANGUAGES.has_key?(lang)
|
|
# Check without dialect
|
|
if lang.to_s =~ /^([a-z]+?)[^a-z].*/
|
|
lang= $1
|
|
return LOWERCASE_LANGUAGES[lang] if LOWERCASE_LANGUAGES.has_key?(lang)
|
|
end
|
|
# Check other dialects
|
|
lang= "#{lang}_"
|
|
LOWERCASE_LANGUAGES.keys.each {|k| return LOWERCASE_LANGUAGES[k] if k.starts_with?(lang)}
|
|
# Nothing found
|
|
nil
|
|
end
|
|
|
|
# Returns an array of (currently) valid languages (ie. languages for which localized data exists).
|
|
def valid_languages
|
|
LOCALIZED_STRINGS.keys
|
|
end
|
|
|
|
# Returns <tt>true</tt> if there are any localized strings for a specified language.
|
|
# Note that although <tt>set_langauge nil</tt> is perfectly valid, <tt>nil</tt> is not a valid language.
|
|
def valid_language?(language)
|
|
LOCALIZED_STRINGS.has_key? language.to_sym rescue false
|
|
end
|
|
end
|
|
end
|