47 lines
1.2 KiB
C++
47 lines
1.2 KiB
C++
#include <psemek/util/executable_path.hpp>
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#include <psemek/util/to_string.hpp>
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#include <psemek/util/exception.hpp>
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#ifdef _WIN32
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#include <libloaderapi.h>
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#include <errhandlingapi.h>
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#include <winerror.h>
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#endif
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#ifdef __APPLE__
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#include <mach-o/dyld.h>
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#endif
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namespace psemek::util
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{
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std::filesystem::path executable_path()
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{
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#if defined _WIN32
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std::wstring result(256, '\0');
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while (true)
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{
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GetModuleFileNameW(NULL, result.data(), result.size());
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auto error = GetLastError();
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if (error == ERROR_SUCCESS)
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break;
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else if (error == ERROR_INSUFFICIENT_BUFFER)
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result.resize(result.size() * 2);
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else
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throw exception(util::to_string("failed to retrieve executable path: ", std::hex, error));
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}
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return std::filesystem::path(result);
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#elif defined __linux__
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return std::filesystem::canonical("/proc/self/exe");
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#elif defined __APPLE__
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uint32_t path_length = 0;
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_NSGetExecutablePath(nullptr, &path_length);
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std::string path(path_length, '\0');
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_NSGetExecutablePath(path.data(), &path_length);
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return std::filesystem::path(std::move(path));
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#else
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throw exception("executable_path() is not implemented for this platform");
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#endif
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}
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}
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