string.c

来自「RT-Thread是发展中的下一代微内核嵌入式实时操作系统」· C语言 代码 · 共 47 行

/*
 * File      : string.c
 * This file is part of RT-Thread RTOS
 * COPYRIGHT (C) 2008, RT-Thread Development Team
 *
 * The license and distribution terms for this file may be
 * found in the file LICENSE in this distribution or at
 * http://www.rt-thread.org/license/LICENSE
 *
 * Change Logs:
 * Date           Author       Notes
 * 2008-08-14     Bernard      the first version
 */

#include <rtthread.h>

#if !defined (RT_USING_NEWLIB) && defined (RT_USING_MINILIBC)
#include "string.h"

/* there is no strcpy and strcmp implementation in RT-Thread */
char *strcpy(char *dest, const char *src)
{
	return rt_strncpy(dest, src, rt_strlen(src) + 1);
}

int strcmp (const char *s1, const char *s2)
{
    while (*s1 && *s1 == *s2)
        s1++, s2++;
    return (*s1 - *s2);
}

#ifdef RT_USING_HEAP
char *strdup(const char *s)
{
	size_t len = strlen(s) + 1;
	char *tmp = (char *)rt_malloc(len);

	if(!tmp) return NULL;

	rt_memcpy(tmp, s, len);
	return tmp;
}
#endif

#endif