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#ifndef UTIL_HXX_INCLUDED
#define UTIL_HXX_INCLUDED
#include <optional>
#include <string>
#include <fstream>
#include <iostream>
#include <iomanip>
#include <QPoint>
#include <vector>
#ifdef _WIN64
#include <stdlib.h>
#include <io.h>
#include <process.h>
#include <direct.h>
#define F_OK 0
#define access _access
#else
#include <unistd.h>
#endif
namespace util
{
template <typename T> int sgn(T x)
{
return (x > 0) ? 1 : ((x < 0) ? -1 : 0);
}
template <class... T> void unused(T &&...) {}
class GetExecutablePathError : public virtual std::exception
{
public:
[[nodiscard]] const char *what() const noexcept override = 0;
};
class SetGrDirError : public virtual std::exception
{
public:
[[nodiscard]] const char *what() const noexcept override = 0;
};
#if defined __unix__ || defined __APPLE__
class ErrnoError : public virtual std::exception
{
public:
ErrnoError();
[[nodiscard]] const char *what() const noexcept override;
private:
std::string what_str_;
};
#elif defined _WIN32
class FormatMessageError : public std::exception
{
public:
[[nodiscard]] const char *what() const noexcept override;
};
class GetLastErrorError : public virtual std::exception
{
public:
GetLastErrorError();
[[nodiscard]] const char *what() const noexcept override;
private:
std::string what_str_;
};
#endif
#if defined __APPLE__
class PathTooLongError : public GetExecutablePathError
{
public:
PathTooLongError(size_t neededSize);
[[nodiscard]] const char *what() const noexcept override;
private:
std::string what_str_;
};
#elif defined __unix__
class PathTooLongError : public GetExecutablePathError
{
public:
PathTooLongError();
[[nodiscard]] const char *what() const noexcept override;
private:
std::string what_str_;
};
class ProcessFileLinkNotReadableError : public ErrnoError, public GetExecutablePathError
{
public:
[[nodiscard]] const char *what() const noexcept override;
};
#endif
#if defined __unix__ || defined __APPLE__
class AbsolutePathError : public ErrnoError, public SetGrDirError
{
public:
[[nodiscard]] const char *what() const noexcept override;
};
class CorruptedGrDirError : public SetGrDirError
{
public:
CorruptedGrDirError(const std::string &path);
[[nodiscard]] const char *what() const noexcept override;
private:
std::string what_str_;
};
class SetEnvError : public ErrnoError, public SetGrDirError
{
public:
[[nodiscard]] const char *what() const noexcept override;
};
#elif defined _WIN32
class WideCharToMultiByteError : public GetLastErrorError, public SetGrDirError
{
public:
[[nodiscard]] const char *what() const noexcept override;
};
class ModulePathError : public GetLastErrorError, public SetGrDirError
{
public:
[[nodiscard]] const char *what() const noexcept override;
};
class DirnameError : public SetGrDirError
{
public:
DirnameError(const std::wstring &filepath);
[[nodiscard]] const char *what() const noexcept override;
private:
std::string what_str_;
};
class AbsolutePathError : public SetGrDirError
{
public:
AbsolutePathError(const std::wstring &path);
[[nodiscard]] const char *what() const noexcept override;
private:
std::string what_str_;
};
class CorruptedGrDirError : public SetGrDirError
{
public:
CorruptedGrDirError(const std::wstring &path);
[[nodiscard]] const char *what() const noexcept override;
private:
std::string what_str_;
};
class SetEnvError : public GetLastErrorError, public SetGrDirError
{
public:
[[nodiscard]] const char *what() const noexcept override;
};
#endif
bool endsWith(const std::string &str, const std::string &suffix);
bool startsWith(const std::string &str, const std::string &prefix);
bool isDigits(const std::string &str);
bool isNumber(const std::string &str);
#ifdef _WIN32
bool fileExists(const std::string &file_path);
bool fileExists(const std::wstring &file_path);
std::wstring getEnvVar(const std::wstring &name, const std::wstring &default_value = L"");
#else
bool fileExists(const std::string &file_path);
std::string getEnvVar(const std::string &name, const std::string &default_value = "");
#endif
#ifdef _WIN32
std::wstring getExecutablePath();
#else
std::string getExecutablePath();
#endif
void setGrdir(bool force = false);
template <typename... Args> std::string stringFormat(const std::string &format, Args... args)
{
// Modified version of <https://stackoverflow.com/a/26221725/5958465>
const int needed_bytes = std::snprintf(nullptr, 0, format.c_str(), args...) + 1; // Extra space for '\0'
if (needed_bytes <= 0) throw std::runtime_error("Error during formatting.");
std::vector<char> buf(needed_bytes);
std::snprintf(buf.data(), needed_bytes, format.c_str(), args...);
return std::string(buf.data());
}
// `overloaded` utility taken from <https://en.cppreference.com/w/cpp/utility/variant/visit>
template <class... Ts> struct Overloaded : Ts...
{
using Ts::operator()...;
};
template <class... Ts> Overloaded(Ts...) -> Overloaded<Ts...>;
} // namespace util
inline std::ostream &operator<<(std::ostream &os, const QPoint &point)
{
return os << "(" << std::setw(4) << point.x() << ", " << std::setw(4) << point.y() << ")";
}
#endif /* ifndef UTIL_HXX_INCLUDED */
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