#include <dirent.h>

#include <iostream>

#include <string>

#include <sys/stat.h>

#include <vector>

namespace dir_common {

// Function to check if the path is a directory

bool is_directory(const std::string &path) {

struct stat statbuf;

if (stat(path.c_str(), &statbuf) != 0) {

return false;

}

return S_ISDIR(statbuf.st_mode);

}

void traverse_directory(const std::string &dir_path,

std::vector<std::string> &file_list) {

if (dir_path.empty()) {

return;

}

DIR *dir = opendir(dir_path.c_str());

if (dir == nullptr) {

std::cerr << "The path specified is not a valid directory: " << dir_path

<< std::endl;

return;

}

struct dirent *entry;

while ((entry = readdir(dir)) != nullptr) {

std::string entry_name = entry->d_name;

if (entry_name == "." || entry_name == "..") {

continue;

}

std::string full_path = dir_path + "/" + entry_name;

if (is_directory(full_path)) {

traverse_directory(full_path, file_list);

} else {

file_list.push_back(full_path);

}

}

closedir(dir);

}

} // namespace dir_common