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118 lines
2.0 KiB
C++
118 lines
2.0 KiB
C++
//
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// Error.cpp
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//
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// Library: Foundation
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// Package: Core
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// Module: Error
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#include "Poco/Foundation.h"
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#include "Poco/UnicodeConverter.h"
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#include "Poco/Error.h"
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#include <string>
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#include <string.h>
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#include <errno.h>
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namespace Poco {
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#ifdef POCO_OS_FAMILY_WINDOWS
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DWORD Error::last()
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{
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return GetLastError();
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}
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std::string Error::getMessage(DWORD errorCode)
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{
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std::string errMsg;
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DWORD dwFlg = FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS;
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#if defined(POCO_WIN32_UTF8) && !defined(POCO_NO_WSTRING)
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LPWSTR lpMsgBuf = 0;
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if (FormatMessageW(dwFlg, 0, errorCode, 0, (LPWSTR) & lpMsgBuf, 0, NULL))
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UnicodeConverter::toUTF8(lpMsgBuf, errMsg);
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#else
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LPTSTR lpMsgBuf = 0;
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if (FormatMessageA(dwFlg, 0, errorCode, 0, (LPTSTR) & lpMsgBuf, 0, NULL))
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errMsg = lpMsgBuf;
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#endif
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LocalFree(lpMsgBuf);
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return errMsg;
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}
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#else
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int Error::last()
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{
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return errno;
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}
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class StrErrorHelper
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/// This little hack magically handles all variants
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/// of strerror_r() (POSIX and GLIBC) and strerror().
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{
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public:
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explicit StrErrorHelper(int err)
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{
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_buffer[0] = 0;
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#if (_XOPEN_SOURCE >= 600) || POCO_ANDROID || __APPLE__
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setMessage(strerror_r(err, _buffer, sizeof(_buffer)));
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#elif _GNU_SOURCE
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setMessage(strerror_r(err, _buffer, sizeof(_buffer)));
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#else
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setMessage(strerror(err));
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#endif
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}
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~StrErrorHelper()
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{
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}
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const std::string& message() const
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{
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return _message;
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}
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protected:
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void setMessage(int rc)
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/// Handles POSIX variant
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{
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_message = _buffer;
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}
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void setMessage(const char* msg)
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/// Handles GLIBC variant
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{
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_message = msg;
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}
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private:
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char _buffer[256];
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std::string _message;
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};
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std::string Error::getMessage(int errorCode)
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{
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StrErrorHelper helper(errorCode);
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return helper.message();
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}
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#endif
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} // namespace Poco
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