C++ (Cpp) string::empty Examples

Example #1

File: master_service.cpp Project: xiongxiaoping/acl

void master_service::find_addr_include(acl::string& name, acl::string& addr,
                                       const char* nic_names, const char* net_addrs)
{
    ACL_IFCONF *ifconf;	/* 网卡查询结果对象 */
    ACL_IFADDR *ifaddr;	/* 每个网卡信息对象 */
    ACL_ITER iter;		/* 遍历对象 */

    /* 查询本机所有网卡信息 */
    ifconf = acl_get_ifaddrs();

    if (ifconf == NULL)
    {
        logger_error("acl_get_ifaddrs error: %s, use 127.0.0.1",
                     acl::last_serror());
        name = "lo";
        addr = "127.0.0.1";
        return;
    }

    acl::string nic_names_buf(nic_names);
    acl::string net_addrs_buf(net_addrs);
    const std::vector<acl::string>& names = nic_names_buf.split2(";, \t");
    const std::vector<acl::string>& addrs = net_addrs_buf.split2(";, \t");

    bool find_nic;

    /* 遍历所有网卡的信息, 从中找出匹配内网网卡地址的选项 */
    acl_foreach(iter, ifconf)
    {
        ifaddr = (ACL_IFADDR*) iter.data;
        const char* ptr = ifaddr->name;

        if (ptr == NULL || *ptr == 0)
        {
            logger_error("ifaddr->name NULL");
            continue;
        }

        // 找到网卡名匹配的地址
        find_nic = false;
        for (std::vector<acl::string>::const_iterator cit
                = names.begin(); cit != names.end(); ++cit)
        {
            if ((*cit).ncompare(ptr, (*cit).size(), false) == 0)
            {
                find_nic = true;
                name = ptr;
                break;
            }
        }

        if (find_nic == false)
            continue;

        // 找到 IP 地址匹配的地址
        for (std::vector<acl::string>::const_iterator cit
                = addrs.begin(); cit != addrs.end(); ++cit)
        {
            if (strstr(ifaddr->ip, (*cit).c_str()) != NULL)
            {
                addr = ifaddr->ip;
                break;
            }
        }

        if (!addr.empty())
            break;
    }