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-rwxr-xr-x[-rw-r--r--]zen/sys_error.h266
1 files changed, 105 insertions, 161 deletions
diff --git a/zen/sys_error.h b/zen/sys_error.h
index 4798b959..a19409ab 100644..100755
--- a/zen/sys_error.h
+++ b/zen/sys_error.h
@@ -1,161 +1,105 @@
-// *****************************************************************************
-// * This file is part of the FreeFileSync project. It is distributed under *
-// * GNU General Public License: http://www.gnu.org/licenses/gpl-3.0 *
-// * Copyright (C) Zenju (zenju AT freefilesync DOT org) - All Rights Reserved *
-// *****************************************************************************
-
-#ifndef SYS_ERROR_H_3284791347018951324534
-#define SYS_ERROR_H_3284791347018951324534
-
-#include <string>
-#include "utf.h"
-#include "i18n.h"
-#include "scope_guard.h"
-
-#ifdef ZEN_WIN
- #include "win.h" //tame WinINet.h include
- #include <WinINet.h>
-#elif defined ZEN_LINUX || defined ZEN_MAC
- #include <cstring>
- #include <cerrno>
-#endif
-
-
-namespace zen
-{
-//evaluate GetLastError()/errno and assemble specific error message
-#ifdef ZEN_WIN
- using ErrorCode = DWORD;
-#elif defined ZEN_LINUX || defined ZEN_MAC
- using ErrorCode = int;
-#endif
-
-ErrorCode getLastError();
-
-std::wstring formatSystemError(const std::wstring& functionName, ErrorCode ec);
-std::wstring formatSystemError(const std::wstring& functionName, const std::wstring& errorCode, const std::wstring& errorMsg);
-
-//A low-level exception class giving (non-translated) detail information only - same conceptional level like "GetLastError()"!
-class SysError
-{
-public:
- explicit SysError(const std::wstring& msg) : msg_(msg) {}
- const std::wstring& toString() const { return msg_; }
-
-private:
- std::wstring msg_;
-};
-
-#define DEFINE_NEW_SYS_ERROR(X) struct X : public SysError { X(const std::wstring& msg) : SysError(msg) {} };
-
-
-
-#ifdef _MSC_VER
-#define THROW_LAST_SYS_ERROR(functionName) \
- do \
- { \
- const ErrorCode ecInternal = getLastError(); \
- throw SysError(formatSystemError(functionName, ecInternal)); \
- \
- __pragma(warning(suppress: 4127)) /*"conditional expression is constant"*/ \
- } while (false)
-
-#else //same thing witout "__pragma":
-#define THROW_LAST_SYS_ERROR(functionName) \
- do { const ErrorCode ecInternal = getLastError(); throw SysError(formatSystemError(functionName, ecInternal)); } while (false)
-#endif
-
-
-
-
-
-
-//######################## implementation ########################
-inline
-ErrorCode getLastError()
-{
-#ifdef ZEN_WIN
- return ::GetLastError();
-#elif defined ZEN_LINUX || defined ZEN_MAC
- return errno; //don't use "::", errno is a macro!
-#endif
-}
-
-
-std::wstring formatSystemErrorRaw(long long) = delete; //intentional overload ambiguity to catch usage errors
-
-inline
-std::wstring formatSystemErrorRaw(ErrorCode ec) //return empty string on error
-{
- const ErrorCode currentError = getLastError(); //not necessarily == lastError
-
- std::wstring errorMsg;
-#ifdef ZEN_WIN
- ZEN_ON_SCOPE_EXIT(::SetLastError(currentError)); //this function must not change active system error variable!
-
- LPWSTR buffer = nullptr;
- const DWORD rv = [&]
- {
- if (INTERNET_ERROR_BASE <= ec && ec <= INTERNET_ERROR_LAST)
- return ::FormatMessage(FORMAT_MESSAGE_FROM_HMODULE |
- FORMAT_MESSAGE_MAX_WIDTH_MASK |
- FORMAT_MESSAGE_IGNORE_INSERTS |
- FORMAT_MESSAGE_ALLOCATE_BUFFER, ::GetModuleHandle(L"WinINet.dll"), ec, 0, reinterpret_cast<LPWSTR>(&buffer), 0, nullptr);
- else
- return ::FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
- FORMAT_MESSAGE_MAX_WIDTH_MASK |
- FORMAT_MESSAGE_IGNORE_INSERTS | //important: without this flag ::FormatMessage() will fail if message contains placeholders
- FORMAT_MESSAGE_ALLOCATE_BUFFER, //_In_ DWORD dwFlags,
- nullptr, //_In_opt_ LPCVOID lpSource,
- ec, //_In_ DWORD dwMessageId,
- 0, //_In_ DWORD dwLanguageId,
- reinterpret_cast<LPWSTR>(&buffer), //_Out_ LPTSTR lpBuffer,
- 0, //_In_ DWORD nSize,
- nullptr); //_In_opt_ va_list *Arguments
- }();
- if (rv != 0)
- if (buffer) //"don't trust nobody"
- {
- ZEN_ON_SCOPE_EXIT(::LocalFree(buffer));
- errorMsg = buffer;
- }
-
-#elif defined ZEN_LINUX || defined ZEN_MAC
- ZEN_ON_SCOPE_EXIT(errno = currentError);
-
- errorMsg = utfCvrtTo<std::wstring>(::strerror(ec));
-#endif
- trim(errorMsg); //Windows messages seem to end with a blank...
-
- return errorMsg;
-}
-
-
-std::wstring formatSystemError(const std::wstring& functionName, long long lastError) = delete; //intentional overload ambiguity to catch usage errors with HRESULT!
-
-inline
-std::wstring formatSystemError(const std::wstring& functionName, ErrorCode ec)
-{
- return formatSystemError(functionName, numberTo<std::wstring>(ec), formatSystemErrorRaw(ec));
-}
-
-
-inline
-std::wstring formatSystemError(const std::wstring& functionName, const std::wstring& errorCode, const std::wstring& errorMsg)
-{
- std::wstring output = replaceCpy(_("Error Code %x:"), L"%x", errorCode);
-
- if (!errorMsg.empty())
- {
- output += L" ";
- output += errorMsg;
- }
-
- output += L" (" + functionName + L")";
-
- return output;
-}
-
-}
-
-#endif //SYS_ERROR_H_3284791347018951324534
+// *****************************************************************************
+// * This file is part of the FreeFileSync project. It is distributed under *
+// * GNU General Public License: http://www.gnu.org/licenses/gpl-3.0 *
+// * Copyright (C) Zenju (zenju AT freefilesync DOT org) - All Rights Reserved *
+// *****************************************************************************
+
+#ifndef SYS_ERROR_H_3284791347018951324534
+#define SYS_ERROR_H_3284791347018951324534
+
+#include <string>
+#include "utf.h"
+#include "i18n.h"
+#include "scope_guard.h"
+
+ #include <cstring>
+ #include <cerrno>
+
+
+namespace zen
+{
+//evaluate GetLastError()/errno and assemble specific error message
+ using ErrorCode = int;
+
+ErrorCode getLastError();
+
+std::wstring formatSystemError(const std::wstring& functionName, ErrorCode ec);
+std::wstring formatSystemError(const std::wstring& functionName, const std::wstring& errorCode, const std::wstring& errorMsg);
+
+//A low-level exception class giving (non-translated) detail information only - same conceptional level like "GetLastError()"!
+class SysError
+{
+public:
+ explicit SysError(const std::wstring& msg) : msg_(msg) {}
+ const std::wstring& toString() const { return msg_; }
+
+private:
+ std::wstring msg_;
+};
+
+#define DEFINE_NEW_SYS_ERROR(X) struct X : public SysError { X(const std::wstring& msg) : SysError(msg) {} };
+
+
+
+#define THROW_LAST_SYS_ERROR(functionName) \
+ do { const ErrorCode ecInternal = getLastError(); throw SysError(formatSystemError(functionName, ecInternal)); } while (false)
+
+
+
+
+
+
+//######################## implementation ########################
+inline
+ErrorCode getLastError()
+{
+ return errno; //don't use "::", errno is a macro!
+}
+
+
+std::wstring formatSystemErrorRaw(long long) = delete; //intentional overload ambiguity to catch usage errors
+
+inline
+std::wstring formatSystemErrorRaw(ErrorCode ec) //return empty string on error
+{
+ const ErrorCode currentError = getLastError(); //not necessarily == lastError
+
+ std::wstring errorMsg;
+ ZEN_ON_SCOPE_EXIT(errno = currentError);
+
+ errorMsg = utfCvrtTo<std::wstring>(::strerror(ec));
+ trim(errorMsg); //Windows messages seem to end with a blank...
+
+ return errorMsg;
+}
+
+
+std::wstring formatSystemError(const std::wstring& functionName, long long lastError) = delete; //intentional overload ambiguity to catch usage errors with HRESULT!
+
+inline
+std::wstring formatSystemError(const std::wstring& functionName, ErrorCode ec)
+{
+ return formatSystemError(functionName, replaceCpy(_("Error Code %x"), L"%x", numberTo<std::wstring>(ec)), formatSystemErrorRaw(ec));
+}
+
+
+inline
+std::wstring formatSystemError(const std::wstring& functionName, const std::wstring& errorCode, const std::wstring& errorMsg)
+{
+ std::wstring output = errorCode + L":";
+
+ const std::wstring errorMsgFmt = trimCpy(errorMsg);
+ if (!errorMsgFmt.empty())
+ {
+ output += L" ";
+ output += errorMsgFmt;
+ }
+
+ output += L" [" + functionName + L"]";
+
+ return output;
+}
+
+}
+
+#endif //SYS_ERROR_H_3284791347018951324534
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