video2x/src/fsutils.cpp
2024-11-04 00:00:00 +00:00

111 lines
2.9 KiB
C++

#include "fsutils.h"
#if _WIN32
#include <windows.h>
#include <cwchar>
#else
#include <unistd.h>
#include <cstring>
#endif
#include <spdlog/spdlog.h>
#if _WIN32
static std::filesystem::path get_executable_directory() {
std::vector<wchar_t> filepath(MAX_PATH);
// Get the executable path, expanding the buffer if necessary
DWORD size = GetModuleFileNameW(NULL, filepath.data(), static_cast<DWORD>(filepath.size()));
if (size == 0) {
spdlog::error("Error getting executable path: {}", GetLastError());
return std::filesystem::path();
}
// Resize the buffer if necessary
while (size >= filepath.size()) {
filepath.resize(filepath.size() * 2);
size = GetModuleFileNameW(NULL, filepath.data(), static_cast<DWORD>(filepath.size()));
if (size == 0) {
spdlog::error("Error getting executable path: {}", GetLastError());
return std::filesystem::path();
}
}
// Create a std::filesystem::path from the filepath and return its parent path
std::filesystem::path execpath(filepath.data());
return execpath.parent_path();
}
#else // _WIN32
static std::filesystem::path get_executable_directory() {
std::error_code ec;
std::filesystem::path filepath = std::filesystem::read_symlink("/proc/self/exe", ec);
if (ec) {
spdlog::error("Error reading /proc/self/exe: {}", ec.message());
return std::filesystem::path();
}
return filepath.parent_path();
}
#endif // _WIN32
bool filepath_is_readable(const std::filesystem::path &path) {
#if _WIN32
FILE *fp = _wfopen(path.c_str(), L"rb");
#else // _WIN32
FILE *fp = fopen(path.c_str(), "rb");
#endif // _WIN32
if (!fp) {
return false;
}
fclose(fp);
return true;
}
std::filesystem::path find_resource_file(const std::filesystem::path &path) {
if (filepath_is_readable(path)) {
return path;
}
if (filepath_is_readable(std::filesystem::path("/usr/share/video2x/") / path)) {
return std::filesystem::path("/usr/share/video2x/") / path;
}
return get_executable_directory() / path;
}
std::string path_to_u8string(const std::filesystem::path &path) {
#if _WIN32
std::wstring wide_path = path.wstring();
int buffer_size =
WideCharToMultiByte(CP_UTF8, 0, wide_path.c_str(), -1, nullptr, 0, nullptr, nullptr);
if (buffer_size == 0) {
return std::string();
}
std::vector<char> buffer(buffer_size);
WideCharToMultiByte(
CP_UTF8, 0, wide_path.c_str(), -1, buffer.data(), buffer_size, nullptr, nullptr
);
return std::string(buffer.data());
#else
return path.string();
#endif
}
StringType path_to_string_type(const std::filesystem::path &path) {
#if _WIN32
return path.wstring();
#else
return path.string();
#endif
}
StringType to_string_type(int value) {
#if _WIN32
return std::to_wstring(value);
#else
return std::to_string(value);
#endif
}