std::string_view 的使用

Core/Base/Check.cpp

@@ -3,10 +3,11 @@
 #include <algorithm>
 #include <iostream>
 #include <sstream>
+#include <string_view>
 
 bool check_port(long long port) { return port >= 0 && port <= 65535; }
-bool check_ipv4(const std::string &ip) {
-  std::istringstream ss(ip);
+bool check_ipv4(std::string_view ip) {
+  std::istringstream ss{std::string(ip)};
   std::string segment;
   int count = 0;
 
@@ -53,9 +54,9 @@ bool check_ipv4(const std::string &ip) {
 //     return count == 4; // IPv4 应该有 4 个段
 // }
 
-unsigned int ip_to_int(const std::string &ip) {
+unsigned int ip_to_int(std::string_view ip) {
   unsigned int result = 0;
-  std::stringstream ss(ip);
+  std::stringstream ss{std::string(ip)};
   std::string byte;
   for (int i = 0; i < 4; ++i) {
     std::getline(ss, byte, '.');
@@ -65,8 +66,8 @@ unsigned int ip_to_int(const std::string &ip) {
 }
 
 // 判断 IP 地址是否在子网内
-bool is_in_subnet(const std::string &ip, const std::string &netmask,
-                  const std::string &gateway) {
+bool is_in_subnet(std::string_view ip, std::string_view netmask,
+                  std::string_view gateway) {
   unsigned int ipInt = ip_to_int(ip);
   unsigned int netmaskInt = ip_to_int(netmask);
   unsigned int gatewayInt = ip_to_int(gateway);
@@ -77,8 +78,8 @@ bool is_in_subnet(const std::string &ip, const std::string &netmask,
 }
 
 // check 函数，验证 IP、子网掩码和网关
-bool check_ip_netmask_gateway(const std::string &ip, const std::string &netmask,
-                              const std::string &gateway) {
+bool check_ip_netmask_gateway(std::string_view ip, std::string_view netmask,
+                              std::string_view gateway) {
   // 验证 IP 地址、子网掩码和网关是否合法
   if (!check_ipv4(ip)) {
     std::cerr << "Invalid IP address: " << ip << std::endl;
@@ -166,4 +167,4 @@ TEST(CheckIPv4Test, InvalidIPv4Addresses) {
 //     }
 // }
 
-#endif
+#endif