FCIMPLEND
void QCALLTYPE SystemNative::_GetCommandLine(QCall::StringHandleOnStack retString)
{
QCALL_CONTRACT;
BEGIN_QCALL;
LPCWSTR commandLine;
if (g_pCachedCommandLine != NULL)
{
// Use the cached command line if available
commandLine = g_pCachedCommandLine;
}
else
{
commandLine = WszGetCommandLine();
if (commandLine==NULL)
COMPlusThrowOM();
}
retString.Set(commandLine);
END_QCALL;
}
void QCALLTYPE TypeNameBuilder::_ToString(TypeNameBuilder * pTnb, QCall::StringHandleOnStack retString)
{
QCALL_CONTRACT;
BEGIN_QCALL;
retString.Set(*pTnb->GetString());
END_QCALL;
}
FCIMPLEND
void QCALLTYPE SystemNative::_GetCommandLine(QCall::StringHandleOnStack retString)
{
QCALL_CONTRACT;
BEGIN_QCALL;
LPCWSTR commandLine;
commandLine = WszGetCommandLine();
if (commandLine==NULL)
COMPlusThrowOM();
retString.Set(commandLine);
END_QCALL;
}
// A buffer of size ConsoleNative::MaxConsoleTitleLength is quite big.
// First, we try allocating a smaller buffer because most often, the console title is short.
// If it turns out that the short buffer size is insufficient, we try again using a larger buffer.
INT32 QCALLTYPE ConsoleNative::GetTitle(QCall::StringHandleOnStack outTitle, INT32& outTitleLen) {
QCALL_CONTRACT;
INT32 result = 0;
BEGIN_QCALL;
// Reserve buffer:
InlineSBuffer< ADJUST_NUM_CHARS(BUFF_SIZE(ShortConsoleTitleLength)) > titleBuff;
// Hold last error:
DWORD lastError;
// Read console title, get length of the title:
BYTE *buffPtr = titleBuff.OpenRawBuffer( ADJUST_NUM_CHARS(BUFF_SIZE(ShortConsoleTitleLength)) );
SetLastError(0);
DWORD len = GetConsoleTitle((TCHAR *) buffPtr, ADJUST_NUM_CHARS(ShortConsoleTitleLength + 1));
lastError = GetLastError();
titleBuff.CloseRawBuffer();
// If the title length is larger than supported maximum, do not bother reading it, just return the length:
if (len > MaxConsoleTitleLength) {
outTitleLen = len;
outTitle.Set(W(""));
result = 0;
// If title length is within valid range:
} else {
// If the title is longer than the short buffer, but can fit in the max supported length,
// read it again with the long buffer:
if (len > ShortConsoleTitleLength) {
COUNT_T buffSize = ADJUST_NUM_CHARS(BUFF_SIZE(len));
titleBuff.SetSize(buffSize);
BYTE *buffPtr = titleBuff.OpenRawBuffer(buffSize);
SetLastError(0);
len = GetConsoleTitle((TCHAR *) buffPtr, ADJUST_NUM_CHARS(len + 1));
lastError = GetLastError();
titleBuff.CloseRawBuffer();
}
// Zero may indicate error or empty title. Check for error:
result = (INT32) (0 == len ? lastError : 0);
// If no error, set title and length:
if (0 == result) {
const BYTE *cBuffPtr = (const BYTE *) titleBuff;
outTitle.Set((TCHAR *) cBuffPtr);
outTitleLen = (INT32) len;
// If error, set to empty:
} else {
outTitleLen = (INT32) -1;
// No need to set the title string if we have an error anyway.
}
} // if title length is within valid range.
END_QCALL;
return result;
}