linux C 读取目录文件并统计文件数

来源：互联网发布：淘宝已评论怎么看不到编辑：程序博客网时间：2024/06/17 18:29

转自：http://blog.csdn.net/hhbbhh/article/details/5192411

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

#define MAX 1024

int get_file_count(char *root)
{
DIR *dir;
struct dirent * ptr;
int total = 0;
char path[MAX];
dir = opendir(root); /* 打开目录*/
if(dir == NULL)
{
perror("fail to open dir");
exit(1);
}

errno = 0;
while((ptr = readdir(dir)) != NULL)
{
  //顺序读取每一个目录项；
  //跳过“..”和“.”两个目录
  if(strcmp(ptr->d_name,".") == 0 || strcmp(ptr->d_name,"..") == 0)
  {
   continue;
  }
  //printf("%s%s/n",root,ptr->d_name);
  //如果是目录，则递归调用 get_file_count函数

  if(ptr->d_type == DT_DIR)
  {
   sprintf(path,"%s%s/",root,ptr->d_name);
   //printf("%s/n",path);
   total += get_file_count(path);
  }

  if(ptr->d_type == DT_REG)
  {
   total++;
   printf("%s%s/n",root,ptr->d_name);
  }
}
if(errno != 0)
{
  printf("fail to read dir"); //失败则输出提示信息
  exit(1);
}
closedir(dir);
return total;
}

int main(int argc, char * argv[])
{
int total;
if(argc != 2)
{
printf("wrong usage/n");
exit(1);
}
total = get_file_count(argv[1]);
printf("%s ha %d files/n",argv[1],total);
return 0;
}

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