winix/core/locale.cpp

/*
 * This file is a part of Winix
 * and is not publicly distributed
 * 
 * Copyright (c) 2010, Tomasz Sowa
 * All rights reserved.
 * 
 */
 
#include "locale.h"
#include "log.h"


Locale::Locale()
{
	loc_tab.resize(lang_unknown);
	default_lang = lang_en;
	current_lang = lang_en;
}



void Locale::AddLocale(Lang lang)
{
	ConfParser::Table::iterator i = loc_parser.table.begin();

	for( ; i != loc_parser.table.end() ; ++i)
		loc_tab[lang][i->first] = i->second;
}



void Locale::ReadFile(const char * dir, const char * dir_def, Lang lang, const char * file)
{
	if( static_cast<size_t>(lang) >= loc_tab.size() )
	{
		// ops, something wrong
		return;
	}

	loc_tab[lang].clear();
	bool read = false;

	if( dir_def  )
	{
		file_name = dir_def;
		file_name += '/';
		file_name += file;

		if( loc_parser.Parse(file_name.c_str()) == ConfParser::ok )
		{
			read = true;
			AddLocale(lang);
			log << log3 << "Locale: read locale from: " << file_name << logend;
		}
	}

	if( dir )
	{
		file_name = dir;
		file_name += '/';
		file_name += file;

		if( loc_parser.Parse(file_name.c_str()) == ConfParser::ok )
		{
			read = true;
			AddLocale(lang);
			log << log3 << "Locale: read locale from: " << file_name << logend;
		}
	}


	if( !read )
		log << log1 <<  "Locale: cant open file for locale: " << file << logend;
}



void Locale::Read(const char * dir, const char * dir_def)
{
	ReadFile(dir, dir_def, lang_pl, "pl");
	ReadFile(dir, dir_def, lang_en, "en");
}


void Locale::Read(const std::string & dir, const std::string & dir_def)
{
	if( dir_def.empty() )
		Read(dir.c_str());
	else
		Read(dir.c_str(), dir_def.c_str());
}


void Locale::SetLang(Lang lang)
{
	current_lang = lang;
}


Locale::Lang Locale::GetLang()
{
	return current_lang;
}



void Locale::SetLangDef(Lang lang)
{
	default_lang = lang_en;
}


bool Locale::IsKey(const std::string & key) const
{
	return IsKey(key, current_lang);
}


bool Locale::IsKey(const std::string & key, Lang lang) const
{
	if( static_cast<size_t>(lang) >= loc_tab.size() )
	{
		// ops, something wrong
		return false;
	}
	
	// looking in the lang language
	ConfParser::Table::const_iterator i = loc_tab[lang].find(key);

	if( i != loc_tab[lang].end() )
		return true;

	if( lang == default_lang )
		return false;


	if( static_cast<size_t>(default_lang) >= loc_tab.size() )
	{
		// ops, something wrong
		return false;
	}

	// looking in a default language
	i = loc_tab[default_lang].find(key);

	if( i != loc_tab[default_lang].end() )
		return true;

	// there is no such a key 
	return false;
}


const std::string & Locale::Get(const std::string & key) const
{
	return Get(key, current_lang);
}



const std::string & Locale::Get(const std::string & key, Lang lang) const
{
	if( static_cast<size_t>(lang) >= loc_tab.size() )
	{
		// ops, something wrong
		return empty;
	}
	
	// looking in the lang language
	ConfParser::Table::const_iterator i = loc_tab[lang].find(key);

	if( i != loc_tab[lang].end() )
		return i->second;

	if( lang == default_lang )
		return empty;


	if( static_cast<size_t>(default_lang) >= loc_tab.size() )
	{
		// ops, something wrong
		return empty;
	}

	// looking in a default language
	i = loc_tab[default_lang].find(key);

	if( i != loc_tab[default_lang].end() )
		return i->second;

	// there is no such a key 
	return empty;
}


Locale::Lang Locale::StrToLang(const std::string & str)
{
	if( str == "en" )
		return lang_en;
	else
	if( str == "pl" )
		return lang_pl;

return lang_unknown;
}



const char * Locale::LangToStr(Lang lang)
{
static char buffer[30];

	switch(lang)
	{
	case lang_en:
		sprintf(buffer, "en");
		break;

	case lang_pl:
		sprintf(buffer, "pl");
		break;
	
	default:
		sprintf(buffer, "unknown");
	}


return buffer;
}



size_t Locale::Size()
{
	return loc_tab.size();
}