94 lines
2.2 KiB
C++
94 lines
2.2 KiB
C++
#include "RemoteLogger.h"
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RemoteLogger::RemoteLogger() : sockfd(-1), is_initialized(false)
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{
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memset(&server_addr, 0, sizeof(server_addr));
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server_len = sizeof(server_addr);
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}
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RemoteLogger::~RemoteLogger()
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{
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close();
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}
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bool RemoteLogger::Init(const char *target_ip, unsigned short target_port)
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{
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// 如果已经初始化，先关闭
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if (is_initialized)
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{
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close();
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}
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// 创建UDP socket
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sockfd = socket(AF_INET, SOCK_DGRAM, 0);
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if (sockfd < 0)
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{
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return false;
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}
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// 设置服务器地址
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server_addr.sin_family = AF_INET;
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server_addr.sin_port = htons(target_port);
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// 转换IP地址
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if (inet_pton(AF_INET, target_ip, &server_addr.sin_addr) <= 0)
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{
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::close(sockfd);
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sockfd = -1;
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return false;
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}
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is_initialized = true;
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return true;
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}
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std::string RemoteLogger::format_string(const char *format, va_list vl)
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{
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// 第一次调用：获取所需缓冲区大小
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va_list vl_copy;
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va_copy(vl_copy, vl); // 复制 va_list（关键！避免原 vl 被修改）
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int length = vsnprintf(nullptr, 0, format, vl_copy);
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va_end(vl_copy); // 释放复制的 va_list
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if (length < 0)
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{
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return "Format error"; // 格式化失败时返回明确信息
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}
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// 第二次调用：实际格式化字符串
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std::vector<char> buffer(length + 1); // 用 vector 自动管理内存
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vsnprintf(buffer.data(), buffer.size(), format, vl);
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return std::string(buffer.data()); // 直接返回，无需手动移除空字符
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}
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void RemoteLogger::log(const char *format, ...)
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{
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va_list vl;
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va_start(vl, format);
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std::string message = format_string(format, vl);
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va_end(vl);
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// 先输出到SDL日志
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SDL_Log(message.c_str());
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if (!is_initialized || sockfd < 0)
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return;
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// 通过UDP发送
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sendto(sockfd, message.c_str(), message.size(), 0,
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(struct sockaddr *)&server_addr, server_len);
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}
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void RemoteLogger::close()
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{
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if (sockfd >= 0)
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{
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::close(sockfd);
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sockfd = -1;
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}
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is_initialized = false;
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}
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// 检查是否已初始化
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bool RemoteLogger::isInitialized() const
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{
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return is_initialized;
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} |