| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "utils.h" |
| |
| #include <flutter_windows.h> |
| #include <io.h> |
| #include <stdio.h> |
| #include <windows.h> |
| |
| #include <iostream> |
| |
| void CreateAndAttachConsole() { |
| if (::AllocConsole()) { |
| FILE* unused; |
| if (freopen_s(&unused, "CONOUT$", "w", stdout)) { |
| _dup2(_fileno(stdout), 1); |
| } |
| if (freopen_s(&unused, "CONOUT$", "w", stderr)) { |
| _dup2(_fileno(stdout), 2); |
| } |
| std::ios::sync_with_stdio(); |
| FlutterDesktopResyncOutputStreams(); |
| } |
| } |
| |
| std::vector<std::string> GetCommandLineArguments() { |
| // Convert the UTF-16 command line arguments to UTF-8 for the Engine to use. |
| int argc; |
| wchar_t** argv = ::CommandLineToArgvW(::GetCommandLineW(), &argc); |
| if (argv == nullptr) { |
| return std::vector<std::string>(); |
| } |
| |
| std::vector<std::string> command_line_arguments; |
| |
| // Skip the first argument as it's the binary name. |
| for (int i = 1; i < argc; i++) { |
| command_line_arguments.push_back(Utf8FromUtf16(argv[i])); |
| } |
| |
| ::LocalFree(argv); |
| |
| return command_line_arguments; |
| } |
| |
| std::string Utf8FromUtf16(const wchar_t* utf16_string) { |
| if (utf16_string == nullptr) { |
| return std::string(); |
| } |
| int target_length = |
| ::WideCharToMultiByte(CP_UTF8, WC_ERR_INVALID_CHARS, utf16_string, -1, |
| nullptr, 0, nullptr, nullptr) - |
| 1; // remove the trailing null character |
| int input_length = (int)wcslen(utf16_string); |
| std::string utf8_string; |
| if (target_length <= 0 || target_length > utf8_string.max_size()) { |
| return utf8_string; |
| } |
| utf8_string.resize(target_length); |
| int converted_length = ::WideCharToMultiByte( |
| CP_UTF8, WC_ERR_INVALID_CHARS, utf16_string, input_length, |
| utf8_string.data(), target_length, nullptr, nullptr); |
| if (converted_length == 0) { |
| return std::string(); |
| } |
| return utf8_string; |
| } |