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#pragma once
#include <string>
#include <optional>
#include <vector>
#include <boost/noncopyable.hpp>
#include <unordered_map>
struct UCollator;
/// Class represents available locales for collations.
class AvailableCollationLocales : private boost::noncopyable
{
public:
struct LocaleAndLanguage
{
std::string locale_name; /// ISO locale code
std::optional<std::string> language; /// full language name in English
};
using AvailableLocalesMap = std::unordered_map<std::string, LocaleAndLanguage>;
using LocalesVector = std::vector<LocaleAndLanguage>;
static const AvailableCollationLocales & instance();
/// Get all collations with names in sorted order
LocalesVector getAvailableCollations() const;
/// Check that collation is supported
bool isCollationSupported(const std::string & locale_name) const;
private:
AvailableCollationLocales();
AvailableLocalesMap locales_map;
};
class Collator : private boost::noncopyable
{
public:
explicit Collator(const std::string & locale_);
~Collator();
int compare(const char * str1, size_t length1, const char * str2, size_t length2) const;
const std::string & getLocale() const;
bool operator==(const Collator & other) const { return this->getLocale() == other.getLocale(); }
private:
std::string locale;
UCollator * collator;
};
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