#include "stdafx.h"
#include "strutil.h"

int reset_buffer(void* pbuf, int idata, size_t ulen)
{
	int ret = -1;
	if (pbuf){
		memset(pbuf, idata, ulen);
		ret = 0;
	}

	return ret;
}


int rend_string(char* pSrc, int iflag)
{
	int ret = -1;
	if (pSrc){
		char* pindex = pSrc;
		while(*pindex != iflag){
			pindex++;
		};
		*pindex = '\0';
		ret = 0;
	}

	return ret;
}

int fifter_string(char*pbuf, size_t usize, const char* psrc, const char cflag)
{
	int ret = -1;
	int i = 0;
	int j = 0;
	size_t ulen = 0;
	const char* pindex = psrc;
	if (NULL == psrc){
		return ret;
	}

	ulen = strlen(psrc);
	for (i=0; i<ulen && i<usize; i++){
		if (pindex[i] != cflag){
			pbuf[j++] = pindex[i];
		}
	}
	if (j == ulen - 2){
		ret = 0;
	}

	return ret;
}


/*无符号长整形转字符型*/
char* _ultoa(unsigned long value, char* pstring, int radix)
{
	char tmp[33] = { 0 };
	char* tp = tmp;
	long i;
	unsigned long v = value;
	char* sp;

	if (radix > 36 || radix <= 1 || NULL == pstring){
		return 0;
	}


	while (v || tp == tmp)
	{
		i = v % radix;
		v = v / radix;
		if (i < 10)
			* tp++ = i + '0';
		else
			*tp++ = i + 'a' - 10;
	}

	sp = pstring;

	while (tp > tmp)
		* sp++ = *--tp;
	*sp = 0;
	return pstring;
}

int get_interger_netaddr(char *strbuf, size_t ubufszie, const char* szip)
{
	int ret = -1;

	unsigned long ulip = 0;
	if (NULL == strbuf || NULL == szip){
		return ret;
	}

	ulip = inet_addr(szip);
	_ultoa(ulip, strbuf, 10);

	ret = 0;
	return ret;
}

int convert_interaddr_strip(char *strbuf, size_t ubufszie, const char* szinter_ip)
{
	int ret = -1;
	char* strip = NULL;
	struct sockaddr_in addr = {0};
	if (!szinter_ip || !strbuf){
		return ret;
	}

	addr.sin_addr.s_addr = strtoul(szinter_ip, NULL, 10);//inet_addr(config->switch_server);
	strip = inet_ntoa(addr.sin_addr);
	if (strip){
		size_t ulen = strlen(strip);
		if (ulen < ubufszie){
			memcpy(strbuf, strip, ulen);
			ret = 0;
		}
	}

	return ret;
}


int connect_strings(char* strbuf, size_t ulen, const char* psrca, const char* pstr, const char* psrcb)
{
	int ret = -1;
	size_t ulena = 0;
	size_t ulenb = 0;
	size_t ulenstr = 0;

	if(!psrca || !psrcb || !pstr){
		return ret;
	}

	ulena = strlen(psrca);
	ulenb = strlen(psrcb);
	ulenstr = strlen(pstr);

	if (ulen > ulena + ulenb + ulenstr){
		snprintf(strbuf, ulen, "%s%s%s", psrca, pstr, psrcb);
		ret = 0;
	}

	return ret;
}