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#include "translation.h"
#ifdef WITH_NLS
#include <locale.h>
#include <vector>
#include <mutex>
#include <string>
#include <atomic>
#include <algorithm>
#include <utility>
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#endif
namespace
{
using Text = std::pair<std::uint64_t, std::string>;
using Texts = std::vector<Text>;
struct
{
std::mutex mutex;
int refcnt{0};
Texts texts;
} singleton;
bool comparator(const Text& a, const Text& b)
{
return a.first < b.first;
}
}
Translation::Translation()
{
std::lock_guard<std::mutex>(singleton.mutex);
++singleton.refcnt;
}
Translation::~Translation()
{
std::lock_guard<std::mutex>(singleton.mutex);
--singleton.refcnt;
if(singleton.refcnt == 0)
{
singleton.texts.clear();
}
}
bool Translation::load(const char* catalog, std::size_t size)
{
Texts texts;
constexpr std::uint32_t magic_number_le = 0x950412de;
constexpr std::uint32_t magic_number_be = 0xde120495;
const char* ptr = catalog;
std::uint32_t magic_number = *reinterpret_cast<const std::uint32_t*>(ptr);
if(magic_number != magic_number_le && magic_number != magic_number_be)
{
return false;
}
ptr += sizeof(magic_number);
std::uint32_t file_format_revision =
*reinterpret_cast<const std::uint32_t*>(ptr);
if(file_format_revision != 0)
{
return false;
}
ptr += sizeof(file_format_revision);
std::uint32_t number_of_strings =
*reinterpret_cast<const std::uint32_t*>(ptr);
ptr += sizeof(number_of_strings);
std::uint32_t orig_table_offset =
*reinterpret_cast<const std::uint32_t*>(ptr);
ptr += sizeof(orig_table_offset);
std::uint32_t transl_table_offset =
*reinterpret_cast<const std::uint32_t*>(ptr);
ptr += sizeof(transl_table_offset);
std::uint32_t hash_table_size =
*reinterpret_cast<const std::uint32_t*>(ptr);
ptr += sizeof(hash_table_size);
std::uint32_t hash_table_offset =
*reinterpret_cast<const std::uint32_t*>(ptr);
ptr += sizeof(hash_table_offset);
const char* orig_ptr = catalog + orig_table_offset;
const char* transl_ptr = catalog + transl_table_offset;
for(std::uint32_t string_index = 0;
string_index < number_of_strings; ++string_index)
{
std::uint32_t orig_string_length =
*reinterpret_cast<const std::uint32_t*>(orig_ptr);
orig_ptr += sizeof(orig_string_length);
std::uint32_t orig_string_offset =
*reinterpret_cast<const std::uint32_t*>(orig_ptr);
orig_ptr += sizeof(orig_string_offset);
std::string orig;
orig.append(catalog + orig_string_offset, orig_string_length);
std::uint32_t transl_string_length =
*reinterpret_cast<const std::uint32_t*>(transl_ptr);
transl_ptr += sizeof(transl_string_length);
std::uint32_t transl_string_offset =
*reinterpret_cast<const std::uint32_t*>(transl_ptr);
transl_ptr += sizeof(transl_string_offset);
std::string transl;
transl.append(catalog + transl_string_offset, transl_string_length);
texts.push_back(make_pair(const_hash(orig.data()), transl));
}
std::sort(texts.begin(), texts.end(), comparator);
{
std::lock_guard<std::mutex>(singleton.mutex);
std::swap(singleton.texts, texts);
}
return true;
}
const char* Translation::gettext(std::uint64_t msgid, const char* original)
{
std::lock_guard<std::mutex>(singleton.mutex);
if(singleton.refcnt == 0)
{
return original;
}
auto it = std::lower_bound(singleton.texts.begin(),
singleton.texts.end(),
make_pair(msgid, std::string()), comparator);
if(it == singleton.texts.end() ||
it->first != msgid)
{
return original;
}
return it->second.data();
}
std::string Translation::getISO639LanguageName()
{
std::string lang;
#ifdef _WIN32
LCID lcid = GetUserDefaultLCID();
char name[LOCALE_NAME_MAX_LENGTH];
GetLocaleInfo(lcid, LOCALE_SISO639LANGNAME, name, LOCALE_NAME_MAX_LENGTH);
lang = name;
#else
try
{
auto langstr = setlocale(LC_ALL, "");
if(langstr != nullptr)
{
lang = langstr;
}
}
catch(...)
{
printf("Bad locale: don't load anything - use default\n");
return "";
}
if(lang == "C")
{
printf("Don't load anything - use default\n");
return "";
}
auto _ = lang.find('_');
lang = lang.substr(0, _);
#endif
return lang;
}
#endif
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