gecko-dev/toolkit/xre/nsNativeAppSupportWin.cpp

67 строки
2.0 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsNativeAppSupportBase.h"
#include "nsNativeAppSupportWin.h"
#include "mozilla/CmdLineAndEnvUtils.h"
#include "mozilla/WindowsConsole.h"
using namespace mozilla;
/*
* This code attaches the process to the appropriate console.
*/
class nsNativeAppSupportWin : public nsNativeAppSupportBase {
public:
// Utility function to handle a Win32-specific command line
// option: "--console", which dynamically creates a Windows
// console.
void CheckConsole();
private:
~nsNativeAppSupportWin() {}
}; // nsNativeAppSupportWin
void nsNativeAppSupportWin::CheckConsole() {
if (CheckArg(gArgc, gArgv, "attach-console") == ARG_FOUND) {
UseParentConsole();
}
if (CheckArg(gArgc, gArgv, "console") == ARG_FOUND) {
if (AllocConsole()) {
// Redirect the standard streams to the new console, but
// only if they haven't been redirected to a valid file.
// Visual Studio's _fileno() returns -2 for the standard
// streams if they aren't associated with an output stream.
if (_fileno(stdout) == -2) {
freopen("CONOUT$", "w", stdout);
}
// There is no CONERR$, so use CONOUT$ for stderr as well.
if (_fileno(stderr) == -2) {
freopen("CONOUT$", "w", stderr);
}
if (_fileno(stdin) == -2) {
freopen("CONIN$", "r", stdin);
}
}
}
}
// Create and return an instance of class nsNativeAppSupportWin.
nsresult NS_CreateNativeAppSupport(nsINativeAppSupport** aResult) {
nsNativeAppSupportWin* pNative = new nsNativeAppSupportWin;
if (!pNative) return NS_ERROR_OUT_OF_MEMORY;
// Check for dynamic console creation request.
pNative->CheckConsole();
*aResult = pNative;
NS_ADDREF(*aResult);
return NS_OK;
}