| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtCore module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
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| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
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| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include <qglobal.h> |
| #include "qsystemerror_p.h" |
| #include <errno.h> |
| #if defined(Q_CC_MSVC) |
| # include <crtdbg.h> |
| #endif |
| #ifdef Q_OS_WIN |
| # include <qt_windows.h> |
| #endif |
| |
| QT_BEGIN_NAMESPACE |
| |
| #if !defined(Q_OS_WIN) && QT_CONFIG(thread) && !defined(Q_OS_INTEGRITY) && !defined(Q_OS_QNX) && \ |
| defined(_POSIX_THREAD_SAFE_FUNCTIONS) && _POSIX_VERSION >= 200112L |
| namespace { |
| // There are two incompatible versions of strerror_r: |
| // a) the XSI/POSIX.1 version, which returns an int, |
| // indicating success or not |
| // b) the GNU version, which returns a char*, which may or may not |
| // be the beginning of the buffer we used |
| // The GNU libc manpage for strerror_r says you should use the XSI |
| // version in portable code. However, it's impossible to do that if |
| // _GNU_SOURCE is defined so we use C++ overloading to decide what to do |
| // depending on the return type |
| static inline Q_DECL_UNUSED QString fromstrerror_helper(int, const QByteArray &buf) |
| { |
| return QString::fromLocal8Bit(buf); |
| } |
| static inline Q_DECL_UNUSED QString fromstrerror_helper(const char *str, const QByteArray &) |
| { |
| return QString::fromLocal8Bit(str); |
| } |
| } |
| #endif |
| |
| #ifdef Q_OS_WIN |
| static QString windowsErrorString(int errorCode) |
| { |
| QString ret; |
| #ifndef Q_OS_WINRT |
| wchar_t *string = 0; |
| FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM, |
| NULL, |
| errorCode, |
| MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), |
| (LPWSTR)&string, |
| 0, |
| NULL); |
| ret = QString::fromWCharArray(string); |
| LocalFree((HLOCAL)string); |
| #else |
| wchar_t errorString[1024]; |
| FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, |
| NULL, |
| errorCode, |
| MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), |
| (LPWSTR)&errorString, |
| sizeof(errorString)/sizeof(wchar_t), |
| NULL); |
| ret = QString::fromWCharArray(errorString); |
| #endif // Q_OS_WINRT |
| |
| if (ret.isEmpty() && errorCode == ERROR_MOD_NOT_FOUND) |
| ret = QString::fromLatin1("The specified module could not be found."); |
| if (ret.endsWith(QLatin1String("\r\n"))) |
| ret.chop(2); |
| if (ret.isEmpty()) |
| ret = QString::fromLatin1("Unknown error 0x%1.") |
| .arg(unsigned(errorCode), 8, 16, QLatin1Char('0')); |
| return ret; |
| } |
| #endif |
| |
| static QString standardLibraryErrorString(int errorCode) |
| { |
| const char *s = nullptr; |
| QString ret; |
| switch (errorCode) { |
| case 0: |
| break; |
| case EACCES: |
| s = QT_TRANSLATE_NOOP("QIODevice", "Permission denied"); |
| break; |
| case EMFILE: |
| s = QT_TRANSLATE_NOOP("QIODevice", "Too many open files"); |
| break; |
| case ENOENT: |
| s = QT_TRANSLATE_NOOP("QIODevice", "No such file or directory"); |
| break; |
| case ENOSPC: |
| s = QT_TRANSLATE_NOOP("QIODevice", "No space left on device"); |
| break; |
| default: { |
| #if QT_CONFIG(thread) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && _POSIX_VERSION >= 200112L && !defined(Q_OS_INTEGRITY) && !defined(Q_OS_QNX) |
| QByteArray buf(1024, Qt::Uninitialized); |
| ret = fromstrerror_helper(strerror_r(errorCode, buf.data(), buf.size()), buf); |
| #else |
| ret = QString::fromLocal8Bit(strerror(errorCode)); |
| #endif |
| break; } |
| } |
| if (s) { |
| // ######## this breaks moc build currently |
| // ret = QCoreApplication::translate("QIODevice", s); |
| ret = QString::fromLatin1(s); |
| } |
| return ret.trimmed(); |
| } |
| |
| QString QSystemError::string(ErrorScope errorScope, int errorCode) |
| { |
| switch(errorScope) { |
| case NativeError: |
| #if defined (Q_OS_WIN) |
| return windowsErrorString(errorCode); |
| #endif // else unix: native and standard library are the same |
| case StandardLibraryError: |
| return standardLibraryErrorString(errorCode); |
| default: |
| qWarning("invalid error scope"); |
| Q_FALLTHROUGH(); |
| case NoError: |
| return QLatin1String("No error"); |
| } |
| } |
| |
| QString QSystemError::stdString(int errorCode) |
| { |
| return standardLibraryErrorString(errorCode == -1 ? errno : errorCode); |
| } |
| |
| #ifdef Q_OS_WIN |
| QString QSystemError::windowsString(int errorCode) |
| { |
| return windowsErrorString(errorCode == -1 ? GetLastError() : errorCode); |
| } |
| |
| QString qt_error_string(int code) |
| { |
| return windowsErrorString(code == -1 ? GetLastError() : code); |
| } |
| #else |
| QString qt_error_string(int code) |
| { |
| return standardLibraryErrorString(code == -1 ? errno : code); |
| } |
| #endif |
| |
| QT_END_NAMESPACE |