Test

#include <list>
#include <stdio.h>
using namespace std;
typedef list<string> LIST;
LIST Host_List;

void DissectHostName(LIST & Domain_List, const char * host_name)
{
	string strHostName = host_name, strTmp;
	basic_string<char>::size_type StartPos = 0, EndPos;
	while(string::npos != (EndPos = strHostName.find('.', StartPos)))
	{
		char * pTmp = (char *)malloc(EndPos - StartPos);
		strncpy(pTmp, host_name + StartPos, EndPos - StartPos);
		pTmp[EndPos - StartPos] = 0;
		strTmp = pTmp;
		Domain_List.push_front(strTmp);
		StartPos = EndPos + 1;
	}

	basic_string<char>::size_type TopDomainLen = strHostName.length() - StartPos;
	char * pTmp = (char *)malloc(TopDomainLen);
	strncpy(pTmp, host_name + StartPos, TopDomainLen);
	pTmp[TopDomainLen] = 0;
	strTmp = pTmp;
	Domain_List.push_front(strTmp);
	return;
}

/*****************************************************************************
Description : 添加主机名
Input Param : host_name 主机名字符串，非空串
Output Param : 无
Return Value : 成功返回0，失败返回-1
*****************************************************************************/
int add_host_name(const char* host_name)
{
	LIST ListDomain;
	LIST ListTmp;

	DissectHostName(ListDomain, host_name);

	// 与已有列表的比较
	LIST::iterator ite;
	for (ite = Host_List.begin(); ite != Host_List.end(); ite++)
	{
		const char * pTmp = (*ite).data();
		DissectHostName(ListTmp, pTmp);
		bool bFind = false, bNext = false;
		LIST::iterator iteDomain = ListDomain.begin(), iteTmp = ListTmp.begin();
		do 
		{
			if (0 > strcmp((*iteDomain).data(), (*iteTmp).data()))
			{
				bFind = true;
				break;
			}
			if (0 < strcmp((*iteDomain).data(), (*iteTmp).data()))
			{
				bNext = true;
				break;
			}
			iteDomain++;
			iteTmp++;
		} while (iteDomain != ListDomain.end() && iteTmp != ListTmp.end());

		if (!bFind && bNext)
		{
			ListTmp.clear();
			continue;
		}

		if (bFind /*域名字典顺序优先*/ || iteDomain == ListDomain.end() /*短域名优先*/)
		{
			break;
		}
	}

	ListDomain.clear();

	char * pTmp = (char *)malloc(strlen(host_name) + 1);
	strncpy(pTmp, host_name, strlen(host_name));
	pTmp[strlen(host_name)] = 0;
	string strTmp = pTmp;
	if (ite == Host_List.end())
	{
		Host_List.push_back(strTmp);
	}
	else
	{
		Host_List.insert(ite, strTmp);
	}

	return 0;
}

/*****************************************************************************
Description : 获取主机名
Input Param : serial_number 排序后的序列号，从1开始
host_name_max_length host_name的最大长度，包括'\0'
Output Param : host_name 主机名字符串，必须包括’\0’，内存由调用者分配和释放
Return Value : 成功返回0，失败返回-1（如：serial_number超出范围、最大长度不够）
*****************************************************************************/
int get_host_name(int serial_number, int host_name_max_length, char* host_name)
{

	/* 在这里实现功能 */
	if (serial_number > Host_List.size())
	{
		return -1;
	}

	LIST::iterator ite;
	for (ite = Host_List.begin(); ite != Host_List.end(); ite++)
	{
		if (--serial_number > 0)
		{
			continue;
		}

		int nLen = strlen((*ite).data());
		if (nLen >= host_name_max_length)
		{
			return -1;
		}

		strncpy(host_name, (*ite).data(), nLen);
		host_name[nLen] = 0;

		break;
	}

	return 0;
}

/*****************************************************************************
Description : 清空所有主机名
Input Param : 无
Output Param : 无
Return Value : 无
*****************************************************************************/
void clear(void)
{

	/* 在这里实现功能 */
	Host_List.clear();
} 

 

void CExampleTest::TestCase01()
{
 char out_str[20];

    CPPUNIT_ASSERT(0 == add_host_name("mail.huawei.com"));
 CPPUNIT_ASSERT(0 == add_host_name("huawei.com"));
 CPPUNIT_ASSERT(0 == add_host_name("teltalk.org"));
 CPPUNIT_ASSERT(0 == add_host_name("google.com.hk"));
 CPPUNIT_ASSERT(0 == add_host_name("imail.huawei.com"));

    CPPUNIT_ASSERT(0 == get_host_name(4, sizeof(out_str), out_str));
 CPPUNIT_ASSERT(0 == strcmp(out_str, "google.com.hk"));

 clear();
}