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47 lines
926 B
C++
47 lines
926 B
C++
// SPDX-License-Identifier: BSD-2-Clause
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// author: Max Kellermann <max.kellermann@gmail.com>
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#include "SocketError.hxx"
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#include <iterator>
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#include <string.h>
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#ifdef _WIN32
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SocketErrorMessage::SocketErrorMessage(socket_error_t code) noexcept
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{
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#ifdef _UNICODE
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wchar_t buffer[msg_size];
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#else
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auto *buffer = msg;
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#endif
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DWORD nbytes = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM |
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FORMAT_MESSAGE_IGNORE_INSERTS |
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FORMAT_MESSAGE_MAX_WIDTH_MASK,
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nullptr, code, 0,
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buffer, msg_size, nullptr);
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if (nbytes == 0) {
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strcpy(msg, "Unknown error");
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return;
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}
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#ifdef _UNICODE
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auto length = WideCharToMultiByte(CP_UTF8, 0, buffer, -1,
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msg, std::size(msg),
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nullptr, nullptr);
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if (length <= 0) {
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strcpy(msg, "WideCharToMultiByte() error");
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return;
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}
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#endif
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}
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#else
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SocketErrorMessage::SocketErrorMessage(socket_error_t code) noexcept
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:msg(strerror(code)) {}
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#endif
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