gui__strlen.c

来自「MCB2300_ucgui_LCD320240.rar LPC2368的u」· C语言 代码 · 共 51 行

/*
*********************************************************************************************************
*   											 uC/GUI
*   					 Universal graphic software for embedded applications
*
*   					(c) Copyright 2002, Micrium Inc., Weston, FL
*   					(c) Copyright 2002, SEGGER Microcontroller Systeme GmbH
*
*   		   礐/GUI is protected by international copyright laws. Knowledge of the
*   		   source code may not be used to write a similar product. This file may
*   		   only be used in accordance with a license and should not be redistributed
*   		   in any way. We appreciate your understanding and fairness.
*
----------------------------------------------------------------------
File		: GUI__strlen.c
Purpose 	: Implementation of GUI__strlen
---------------------------END-OF-HEADER------------------------------
*/

#include "GUI_Protected.h"

/*********************************************************************
*
*   	public code
*
**********************************************************************
*/
/*********************************************************************
*
*   	GUI__strlen
*
* Purpose:
*  Replacement for the strlen function. The advantage is that it can
*  be called with a NULL pointer, in which case -1 is returned.
*/
int GUI__strlen(const char GUI_UNI_PTR *s)
{
	int r = -1;
	if (s)
	{
		do
		{
			r++;
		}
		while (*s++);
	}
	return r;
}

/*************************** End of file ****************************/