C/C++获取文件夹下所有文件

最新推荐文章于 2025-03-08 16:50:06 发布

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本文介绍了一个跨平台（Windows/Linux）的C++程序，该程序能够读取指定目录下的所有文件，并对其进行排序。通过使用不同的文件系统API，程序实现了在不同操作系统上的一致功能。

#include <iostream>  
#include <stdlib.h>  
#include <stdio.h>  
#include <vector>
#include <string>
#include <algorithm>

#ifdef linux  
#include <unistd.h>  
#include <dirent.h>  
#endif  

#ifdef WIN32  
#include <direct.h>  
#include <io.h>  
#endif  

using namespace std;

vector<string> getFiles(string cate_dir)
{
	vector<string> files;//存放文件名  

#ifdef WIN32  
	_finddata_t file;
	long lf;

	//输入文件夹路径  
	if ((lf = _findfirst(cate_dir.c_str(), &file)) == -1) {
		cout << cate_dir << " not found!!!" << endl;
	}
	else {
		while (_findnext(lf, &file) == 0) {
			if (strcmp(file.name, ".") == 0 || strcmp(file.name, "..") == 0)
				continue;
			files.push_back(file.name);
		}
	}

	_findclose(lf);
#endif  

#ifdef linux  
	DIR *dir;
	struct dirent *ptr;
	char base[1000];

	if ((dir = opendir(cate_dir.c_str())) == NULL)
	{
		perror("Open dir error...");
		exit(1);
	}

	while ((ptr = readdir(dir)) != NULL)
	{
		if (strcmp(ptr->d_name, ".") == 0 || strcmp(ptr->d_name, "..") == 0)    ///current dir OR parrent dir  
			continue;
		else if (ptr->d_type == 8)    ///file  
									  //printf("d_name:%s/%s\n",basePath,ptr->d_name);  
			files.push_back(ptr->d_name);
		else if (ptr->d_type == 10)    ///link file  
									   //printf("d_name:%s/%s\n",basePath,ptr->d_name);  
			continue;
		else if (ptr->d_type == 4)    ///dir  
		{
			files.push_back(ptr->d_name);
			/*
			memset(base,'\0',sizeof(base));
			strcpy(base,basePath);
			strcat(base,"/");
			strcat(base,ptr->d_nSame);
			readFileList(base);
			*/
		}
	}
	closedir(dir);
#endif  

	//排序，按从小到大排序  
	sort(files.begin(), files.end());
	return files;
}

#ifdef WIN32
int main(void)
{
	char current_address[100];
	memset(current_address, 0, 100);

	getcwd(current_address, 100); //获取当前路径  

	cout << current_address << endl;
	strcat(current_address, "\\*");

	vector<string> files = getFiles((string)current_address);

	for (int i = 0; i < files.size(); i++)
	{
		cout << files[i] << endl;
	}

	cin.get();

	return 0;
}
#elif linux
int main(void)
{
	DIR *dir;
	char basePath[100];

	///get the current absoulte path  
	memset(basePath, '\0', sizeof(basePath));
	getcwd(basePath, 999);
	printf("the current dir is : %s\n", basePath);


	cout << endl << endl;
	vector<string> files = getFiles(basePath);
	for (int i = 0; i < files.size(); i++)
	{
		cout << files[i] << endl;
	}


	cout << "end..." << endl << endl;
	return 0;
}
#endif // WIN32