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/*
* UltraStar Deluxe - Karaoke Game
*
* UltraStar Deluxe is the legal property of its developers, whose names
* are too numerous to list here. Please refer to the COPYRIGHT
* file distributed with this source distribution.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* $URL$
* $Id$
*/
#include <exception>
#include <boost/filesystem.hpp>
#include <boost/algorithm/string.hpp>
#include "language.hpp"
#include "utils/file.hpp"
// namespace alias for shorter class names
namespace fs = boost::filesystem;
namespace usdx
{
Language* Language::instance = NULL;
log4cxx::LoggerPtr Language::log =
log4cxx::Logger::getLogger("usdx.base.language");
LanguageNotFound::LanguageNotFound(const std::wstring& language) :
BaseException("Language not found!"),
language(language)
{
}
const std::wstring& LanguageNotFound::get_language() const
{
return language;
}
Language::Language(void) : current_translation(NULL), default_translation(NULL)
{
}
void remove_element(std::pair<std::wstring, std::map<std::wstring, std::wstring>*> element)
{
if (element.second) {
element.second->clear();
}
delete element.second;
element.second = NULL;
}
Language::~Language(void)
{
// clear memory for all elements in the map
std::for_each(translations.begin(), translations.end(),
remove_element);
translations.clear();
// remove reference from singleton to make regeneration possible
instance = NULL;
}
Language* Language::get_instance(void)
{
if (instance == NULL) {
instance = new Language();
}
return instance;
}
void Language::parse_translation(const std::wstring& line, std::map<std::wstring, std::wstring>& map)
{
size_t found = line.find(L"=");
if (found != std::wstring::npos) {
// copy the substring until '=' and
// transform to upper case
std:: wstring key(found, L' ');
std::transform(line.begin(), line.begin() + found,
key.begin(), toupper);
boost::trim(key);
std::wstring value(line.substr(found + 1));
boost::trim_if(value, boost::is_cntrl());
boost::trim(value);
LOG4CXX_TRACE(log, L"Found translation from " <<
key << L" to " << value);
map[key] = value;
}
}
void Language::load_language(const std::wstring& language)
{
fs::wpath source_path = language_dir / (language + L".ini");
if (exists(source_path)) {
std::map<std::wstring, std::wstring> *map =
new std::map<std::wstring, std::wstring>();
File source(source_path);
bool started = false;
std::wstring line;
while (source.stream().good()) {
getline(source.stream(), line);
if (started) {
if (line[0] == L'[' && line[line.length() - 1] == L']') {
break;
}
parse_translation(line, *map);
}
else {
if (line.compare(L"[Text]")) {
started = true;
}
}
}
translations[basename(source_path)] = map;
}
}
void Language::load_default_language(const std::wstring& default_language)
{
std::map<std::wstring, std::map<std::wstring, std::wstring>*>::iterator it = translations.find(default_language);
if (it != translations.end()) {
LOG4CXX_DEBUG(log, L"Loading default language: " << default_language);
load_language(default_language);
current_translation = default_translation = translations[default_language];
current_language = default_language;
}
}
void Language::init(const fs::wpath& language_dir, const std::wstring& default_language)
{
if (!is_directory(language_dir)) {
throw std::invalid_argument("language_dir should be a directory");
}
this->language_dir = language_dir;
// default construction yields past-the-end
fs::wdirectory_iterator end_it;
for (fs::wdirectory_iterator it(language_dir); it != end_it; ++it)
{
if (!is_directory(it->status()) &&
extension(it->path()) == L".ini")
{
translations[basename(it->path())] = NULL;
}
}
load_default_language(default_language);
}
void Language::set_language(const std::wstring& language)
{
std::map<std::wstring, std::map<std::wstring, std::wstring>*>::iterator it = translations.find(language);
if (it == translations.end()) {
throw LanguageNotFound(language);
}
if (it->second == NULL) {
load_language(language);
}
current_language = std::wstring(language);
current_translation = translations[current_language];
}
const std::wstring& Language::get_language(void) const
{
return current_language;
}
const std::wstring& Language::translate(const std::wstring& source) const
{
if (current_translation) {
std::map<std::wstring, std::wstring>::iterator it = current_translation->find(source);
if (it != current_translation->end()) {
return it->second;
}
}
if (default_translation) {
std::map<std::wstring, std::wstring>::iterator it = default_translation->find(source);
if (it != default_translation->end()) {
return it->second;
}
}
return source;
}
};
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