c++ 获取文件夹目录名字

 

 

 

 

main.cpp

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#ifndef PHOTO_FILE_PROCESSOR_H #define PHOTO_FILE_PROCESSOR_H   #include <iostream> #include <string> #include <vector> #include <dirent.h> #include <algorithm> #include <stdexcept>   class PhotoFileProcessor { public:     // 构造函数，初始化目录路径     explicit PhotoFileProcessor(const std::string& directory_path)         : directoryPath(directory_path) {}    // 获取文件名（不带扩展名）并按时间戳排序的实现     std::vector<std::string> getFilenamesSortedByTimestamp() const {         DIR* dir = opendir(directoryPath.c_str());         if (dir == nullptr) {             throw std::runtime_error("无法打开目录: " + directoryPath);         }           std::vector<std::pair<double, std::string>> fileTimestampPairs;         struct dirent* entry;           while ((entry = readdir(dir)) != nullptr) {             std::string filename(entry->d_name);               // 过滤掉"."和".."目录             if (filename == "." || filename == "..") {                 continue;             }               // 去除文件扩展名             std::string filename_without_extension = removeExtension(filename);                           // 转化成时间戳             try {                 double timestamp = extractTimestamp(filename_without_extension);                 fileTimestampPairs.emplace_back(timestamp, filename_without_extension);             } catch (const std::runtime_error& e) {                 // 处理提取时间戳失败的情况                 std::cerr << "警告: " << e.what() << std::endl;             }         }           closedir(dir);           // 按时间戳排序         std::sort(fileTimestampPairs.begin(), fileTimestampPairs.end(),             [](const std::pair<double, std::string>& a, const std::pair<double, std::string>& b) {                 return a.first < b.first;             }         );           // 提取排序后的文件名         std::vector<std::string> sortedFilenames;         for (const auto& pair : fileTimestampPairs) {             sortedFilenames.push_back(pair.second);         }           return sortedFilenames;     }   private:     // 去除文件名中的扩展名的实现     std::string removeExtension(const std::string& filename) const {         size_t last_dot = filename.find_last_of('.');         if (last_dot == std::string::npos) {             return filename; // 如果没有点，返回原始文件名         }         return filename.substr(0, last_dot);     }       // 从文件名中提取时间戳的实现     double extractTimestamp(const std::string& filename) const {         // 假设文件名是数字形式的时间戳，例如 "1234567890.jpg"         try {             return std::stod(filename);         } catch (const std::invalid_argument& e) {             throw std::runtime_error("无法从文件名中提取时间戳: " + filename);         }     }         // 目录路径     std::string directoryPath; };           int main() {     try {           std::string directory_path = "/home/dongdong/2project/0data/NWPU/img"; // 替换为你的目录路径         PhotoFileProcessor processor(directory_path);         std::vector<std::string> filenames = processor.getFilenamesSortedByTimestamp();           // 打印结果         for (const std::string& filename : filenames) {             std::cout << filename << std::endl;         }       } catch (const std::exception& e) {         std::cerr << "错误: " << e.what() << std::endl;     }       return 0; }       #endif // PHOTO_FILE_PROCESSOR_H

　　

　CMakeLists.txt

　

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cmake_minimum_required(VERSION 3.10)   project(ImageUtilExample VERSION 1.0)   set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD_REQUIRED True)   # 添加可执行文件 add_executable(ImageUtilExample main.cpp )   # 如果需要，链接其他库