1 // Copyright (c) 2016 Ryan Prichard
3 // Permission is hereby granted, free of charge, to any person obtaining a copy
4 // of this software and associated documentation files (the "Software"), to
5 // deal in the Software without restriction, including without limitation the
6 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
7 // sell copies of the Software, and to permit persons to whom the Software is
8 // furnished to do so, subject to the following conditions:
10 // The above copyright notice and this permission notice shall be included in
11 // all copies or substantial portions of the Software.
13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
18 // FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
21 #include "WinptyException.h"
26 #include "StringBuilder.h"
30 class ExceptionImpl : public WinptyException {
32 ExceptionImpl(const wchar_t *what) :
33 m_what(std::make_shared<std::wstring>(what)) {}
34 virtual const wchar_t *what() const WINPTY_NOEXCEPT override {
35 return m_what->c_str();
38 // Using a shared_ptr ensures that copying the object raises no exception.
39 std::shared_ptr<std::wstring> m_what;
42 } // anonymous namespace
44 void throwWinptyException(const wchar_t *what) {
45 throw ExceptionImpl(what);
48 void throwWindowsError(const wchar_t *prefix, DWORD errorCode) {
49 WStringBuilder sb(64);
50 if (prefix != nullptr) {
51 sb << prefix << L": ";
53 // It might make sense to use FormatMessage here, but IIRC, its API is hard
55 sb << L"Windows error " << errorCode;
56 throwWinptyException(sb.c_str());