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a14c88ba67
Yellow squiggly lines begone! Done automatically on .cpp files through `run-clang-tidy`, with manual corrections to the mistakes. If an import is directly used, but is technically unnecessary since it's recursively imported by something else, it is *not* removed. The tool doesn't touch .h files, so I did some of them by hand while fixing errors due to old recursive imports. Not everything is removed, but the cleanup should be substantial enough. Because this done on Linux, code that isn't used on it is mostly untouched. (Hopefully no open PR is depending on these imports...)
101 lines
2.9 KiB
C++
101 lines
2.9 KiB
C++
// Copyright 2009 Dolphin Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include "Common/CommonFuncs.h"
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#include <cstddef>
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#include <cstring>
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#include <errno.h>
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#ifdef _WIN32
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#include <windows.h>
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#include <SetupAPI.h>
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#define strerror_r(err, buf, len) strerror_s(buf, len, err)
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#include "Common/StringUtil.h"
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#endif
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namespace Common
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{
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constexpr size_t BUFFER_SIZE = 256;
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// There are two variants of strerror_r. The XSI version stores the message to the passed-in
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// buffer and returns an int (0 on success). The GNU version returns a pointer to the message,
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// which might have been stored in the passed-in buffer or might be a static string.
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//
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// This function might change the errno value.
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//
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// References:
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// https://www.gnu.org/software/gnulib/manual/html_node/strerror_005fr.html
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// https://pubs.opengroup.org/onlinepubs/9699919799/functions/strerror_r.html
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// https://refspecs.linuxbase.org/LSB_5.0.0/LSB-Core-generic/LSB-Core-generic/baselib-strerror-r.html
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const char* StrErrorWrapper(int error, char* buffer, std::size_t length)
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{
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// We check defines in order to figure out which variant is in use.
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#if (defined(__GLIBC__) || __ANDROID_API__ >= 23) && \
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(_GNU_SOURCE || (_POSIX_C_SOURCE < 200112L && _XOPEN_SOURCE < 600))
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return strerror_r(error, buffer, length);
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#else
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const int error_code = strerror_r(error, buffer, length);
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return error_code == 0 ? buffer : "";
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#endif
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}
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std::string StrerrorString(int error)
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{
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char error_message[BUFFER_SIZE];
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return StrErrorWrapper(error, error_message, BUFFER_SIZE);
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}
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// Wrapper function to get last strerror(errno) string.
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// This function might change the error code.
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std::string LastStrerrorString()
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{
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return StrerrorString(errno);
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}
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#ifdef _WIN32
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// Wrapper function to get GetLastError() string.
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// This function might change the error code.
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std::string GetLastErrorString()
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{
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return GetWin32ErrorString(GetLastError());
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}
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// Like GetLastErrorString() but if you have already queried the error code.
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std::string GetWin32ErrorString(DWORD error_code)
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{
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wchar_t error_message[BUFFER_SIZE];
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FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM, nullptr, error_code,
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MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), error_message, BUFFER_SIZE, nullptr);
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return WStringToUTF8(error_message);
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}
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// Obtains a full path to the specified module.
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std::optional<std::wstring> GetModuleName(void* hInstance)
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{
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DWORD max_size = 50; // Start with space for 50 characters and grow if needed
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std::wstring name(max_size, L'\0');
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DWORD size;
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while ((size = GetModuleFileNameW(static_cast<HMODULE>(hInstance), name.data(), max_size)) ==
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max_size &&
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GetLastError() == ERROR_INSUFFICIENT_BUFFER)
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{
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max_size *= 2;
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name.resize(max_size);
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}
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if (size == 0)
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{
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return std::nullopt;
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}
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name.resize(size);
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return name;
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}
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#endif
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} // namespace Common
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