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/****************************************************************************
**
** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Qt Software Information (qt-info@nokia.com)
**
** This file is part of the $MODULE$ of the Qt Toolkit.
**
** $TROLLTECH_DUAL_LICENSE$
**
****************************************************************************/
#include "qpopen.h"
QPopen::QPopen()
{
}
bool QPopen::init(const char *command, const char* /* mode */)
{
SECURITY_ATTRIBUTES attributes;
attributes.nLength = sizeof(SECURITY_ATTRIBUTES);
attributes.bInheritHandle = TRUE;
attributes.lpSecurityDescriptor = NULL;
if (! CreatePipe(&childStdOutR, &childStdOutW, &attributes, 0)) {
return false;
}
// Ensure that the read handle to the child process's pipe for STDOUT is not inherited.
SetHandleInformation( childStdOutR, HANDLE_FLAG_INHERIT, 0);
// Create a pipe for the child process's STDIN.
if (! CreatePipe(&childStdInR, &childStdInW, &attributes, 0)) {
return false;
}
// Ensure that the write handle to the child process's pipe for STDIN is not inherited.
SetHandleInformation( childStdInW, HANDLE_FLAG_INHERIT, 0);
//TCHAR szCmdline[strlen(command)]=TEXT(command);
TCHAR *szCmdLine = new TCHAR[strlen(command)+1];
strcpy(szCmdLine, command);
// Set up members of the PROCESS_INFORMATION structure.
ZeroMemory( &processInfo, sizeof(PROCESS_INFORMATION) );
// Set up members of the STARTUPINFO structure.
ZeroMemory( &siStartInfo, sizeof(STARTUPINFO) );
siStartInfo.cb = sizeof(STARTUPINFO);
siStartInfo.hStdError = childStdOutW;
siStartInfo.hStdOutput = childStdOutW;
siStartInfo.hStdInput = childStdInR;
siStartInfo.dwFlags |= STARTF_USESTDHANDLES;
// Create the child process.
bool success = CreateProcess(NULL,
szCmdLine, // command line
NULL, // process security attributes
NULL, // primary thread security attributes
TRUE, // handles are inherited
0, // creation flags
NULL, // use parent's environment
NULL, // use parent's current directory
&siStartInfo, // STARTUPINFO pointer
&processInfo); // receives PROCESS_INFORMATION
delete szCmdLine;
return success;
}
QPopen::~QPopen()
{
CloseHandle(processInfo.hProcess);
CloseHandle(processInfo.hThread);
CloseHandle(childStdInR);
CloseHandle(childStdInW);
CloseHandle(childStdOutR);
CloseHandle(childStdOutW);
}
int QPopen::fwrite(char* buffer, int maxBytes)
{
DWORD bytesWritten;
bool success = WriteFile(childStdInW, buffer, maxBytes, &bytesWritten, NULL);
if(success) {
return bytesWritten;
}
return 0;
}
int QPopen::fread(char* buffer, int maxBytes)
{
DWORD bytesRead;
if( !CloseHandle(childStdOutW) )
return 0;
bool success = ReadFile(childStdOutR, buffer, maxBytes, &bytesRead, NULL);
if(success)
return bytesRead;
return 0;
}
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