path.h

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#ifndef IOUTILITIES_PATHHELPER_H
#define IOUTILITIES_PATHHELPER_H
 
#include "../global.h"
 
#ifdef PLATFORM_WINDOWS
#include "../conversion/stringconversion.h"
#endif
 
#include <string>
#include <string_view>
#ifdef CPP_UTILITIES_USE_STANDARD_FILESYSTEM
#include <filesystem>
#endif
 
#ifdef PLATFORM_WINDOWS
#define PATH_SEP_CHAR '\\'
#define SEARCH_PATH_SEP_CHAR ';'
#define PATH_SEP_STR "\\"
#define SEARCH_PATH_SEP_STR ";"
#else
#define PATH_SEP_CHAR '/'
#define SEARCH_PATH_SEP_CHAR ':'
#define PATH_SEP_STR "/"
#define SEARCH_PATH_SEP_STR ":"
#endif
 
namespace CppUtilities {
 
CPP_UTILITIES_EXPORT std::string fileName(const std::string &path);
CPP_UTILITIES_EXPORT std::string directory(const std::string &path);
#ifdef CPP_UTILITIES_PATHHELPER_STRING_VIEW
CPP_UTILITIES_EXPORT std::string_view fileName(std::string_view path);
CPP_UTILITIES_EXPORT std::string_view directory(std::string_view path);
#endif
CPP_UTILITIES_EXPORT void removeInvalidChars(std::string &fileName);

using PathValueType =
#ifdef PLATFORM_WINDOWS
    wchar_t
#else
    char
#endif
    ;
#ifdef CPP_UTILITIES_USE_STANDARD_FILESYSTEM
static_assert(std::is_same_v<typename std::filesystem::path::value_type, PathValueType>);
#endif

using NativePathString = std::basic_string<PathValueType>;
using NativePathStringView = std::basic_string_view<PathValueType>;
using PathString = std::string;
using PathStringView = std::string_view;

inline
#ifdef PLATFORM_WINDOWS
    NativePathString
#else
    NativePathStringView
#endif
    makeNativePath(PathStringView path)
{
#ifdef PLATFORM_WINDOWS
    auto ec = std::error_code();
    return convertMultiByteToWide(ec, path);
#else
    return path;
#endif
}
 
#if !defined(CPP_UTILITIES_NO_ICONV) || !defined(PLATFORM_WINDOWS)
inline
#ifdef PLATFORM_WINDOWS
    PathString
#else
    PathStringView
#endif
    extractNativePath(NativePathStringView path)
{
#ifdef PLATFORM_WINDOWS
    auto res = convertUtf16LEToUtf8(reinterpret_cast<const char *>(path.data()), path.size() * 2);
    return std::string(res.first.get(), res.second);
#else
    return path;
#endif
}
#endif
 
} // namespace CppUtilities
 
#endif // IOUTILITIES_PATHHELPER_H