Function CopyMultiSz

Drivers/Driver-SRC/setup/devcon/devcon.cpp:403–464

__drv_allocatesMem(object)
LPTSTR * CopyMultiSz(_In_opt_ PZPWSTR Array)
/*++

Routine Description:

    Creates a new array from old
    old array need not have been allocated by GetMultiSzIndexArray

Arguments:

    Array - array of strings, last entry is NULL

Return Value:

    MultiSz array allocated by GetMultiSzIndexArray

--*/
{
    LPTSTR multiSz = NULL;
    HRESULT hr;
    int cchMultiSz = 0;
    int c;
    if(Array) {
        for(c=0;Array[c];c++) {
            cchMultiSz+=(int)_tcslen(Array[c])+1;
        }
    }
    cchMultiSz+=1; // final Null
    multiSz = new TCHAR[cchMultiSz];
    if(!multiSz) {
        return NULL;
    }
    int len = 0;
    if(Array) {
        for(c=0;Array[c];c++) {
            hr = StringCchCopy(multiSz+len,cchMultiSz-len,Array[c]);
            if(FAILED(hr)){
                if(multiSz)
                    delete [] multiSz;
                return NULL;
            }

#pragma prefast(suppress:__WARNING_BUFFER_OVERFLOW, "ESP:732")
            len+=(int)_tcslen(multiSz+len)+1;
        }
    }

    if( len < cchMultiSz ){
        multiSz[len] = TEXT('\0');
    } else {
        // This should never happen!
        multiSz[cchMultiSz-1] = TEXT('\0');
    }

    LPTSTR * pRes = GetMultiSzIndexArray(multiSz);
    if(pRes) {
        return pRes;
    }