Function xnOSStrPrefix

Source/OpenNI/Win32/Win32Strings.cpp:101–135

--------------------------------------------------------------------------- Code ---------------------------------------------------------------------------

// Code
//---------------------------------------------------------------------------
XN_C_API XnStatus xnOSStrPrefix(const XnChar* cpPrefixString, XnChar* cpDestString, const XnUInt32 nDestLength)
{
	// Local function variables
	XnChar* cpTempBuffer = NULL;
	XnSizeT nOutStringLength = 0;

	// Validate the input/output pointers (to make sure none of them is NULL)
	XN_VALIDATE_INPUT_PTR(cpPrefixString);
	XN_VALIDATE_INPUT_PTR(cpDestString);

	// Calculate the final string length
	nOutStringLength = strlen(cpPrefixString) + strlen(cpDestString);

	// Make sure the destination string can hold the required information
	if (nOutStringLength >= nDestLength)
	{
		return (XN_STATUS_INTERNAL_BUFFER_TOO_SMALL);
	}

	// Allocate the temp buffer
	XN_VALIDATE_CALLOC(cpTempBuffer, XnChar, nOutStringLength + sizeof(XnChar));

	// Prefix the string
	strncat (cpTempBuffer, cpPrefixString, nOutStringLength);
	strncat (cpTempBuffer, cpDestString, nOutStringLength);

	// Copy the temp buffer into the output
	strncpy (cpDestString, cpTempBuffer, nOutStringLength);

	// Free the temporary buffer
	xnOSFree(cpTempBuffer);

	// All is good...
	return (XN_STATUS_OK);
}

XN_C_API XnStatus xnOSStrAppend(XnChar* cpDestString, const XnChar* cpSrcString, const XnUInt32 nDestLength)
{