Linux C 读取文件目录下的目录，并统计各目录下的文件数和目录数-优快云博客

本文链接：https://blog.youkuaiyun.com/Z_baobao/article/details/102412558

本文介绍了一个使用C语言实现的文件系统遍历程序，该程序能够读取指定路径下的所有文件和子目录，统计并输出文件和目录的数量。通过递归调用，程序可以深入每一级子目录进行文件计数。

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <unistd.h>



int readFileList(char *basePath,int *count_dir,int *count_file)
{
    DIR *dir;
    struct dirent *ptr;
    char base[1000];

    if ((dir=opendir(basePath)) == 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
            (*count_file)++;
        else if(ptr->d_type == 10)    ///link file
            (*count_file)++;
        else if(ptr->d_type == 4)    ///dir
        {
            memset(base,'\0',sizeof(base));
            strcpy(base,basePath);
            strcat(base,"/");
            strcat(base,ptr->d_name);
            readFileList(base);
            (*count_dir)++;
        }
    }
    closedir(dir);
    return 1;
}

int main(void)
{
    DIR *dir;
    char basePath[1000];

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

    ///get the file list
    memset(basePath,'\0',sizeof(basePath));
    strcpy(basePath,"./XL");
    //************************
    DIR *dir;
    struct dirent *ptr;
    char base[1000];

    if ((dir=opendir(basePath)) == NULL)
    {
        perror("Open dir error...");
        exit(1);
    }
    while ((ptr=readdir(dir)) != NULL)
    {
    	if(ptr->d_type == 4)    ///dir
       	{
       	    int count_dir=0;
			int count_file=0;
			int *p1=&count_dir;
			int *p2=&count_file;
            memset(base,'\0',sizeof(base));
            strcpy(base,basePath);
            strcat(base,"/");
            strcat(base,ptr->d_name);
            printf("the dir name: %s\n",basePath);
            readFileList(base,p1,p2);
            printf("the number of dir:%d\n",count_dir);
            printf("the number of file:%d\n",count_file);
            
         }
     }
    //************************
    //readFileList(basePath);
    //printf("the total is : %d\n",count_dir+count_file);
    return 0;
}