FTS(3) 遍历文件夹实例

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<sys/types.h>
#include<sys/stat.h>
#include<dirent.h>
#include<fts.h>

#define MAX 300

struct file{

char* file_name;
long long file_size;
};
struct file files_in_dir[MAX];

void travDir(char* dir_s, struct file filesindir[]); //遍历数组
 

// 要求1个文件夹路径参数,用来作为遍历的起始点
int main(int argc, char* argv[]){
if(argc < 2){

printf("Need a dir path to start.\n");
exit(1);
}

travDir(argv[1], files_in_dir);

printf("successfull\n");

return 0;

}

void travDir(char* dir_s, struct file filesindir[]){

//遍历文件夹,把文件夹里的mp4文件的文件信息存入struct

FTS* fts;
char** ptr_path;
FTSENT* ftsfile;
ptr_path = (char**)malloc(sizeof(char**));
*ptr_path = dir_s;
puts(*ptr_path);

if( (fts = fts_open(ptr_path, FTS_PHYSICAL, NULL)) == NULL){
printf("Can't open the dir %s. Can't get ftsent struct \n", dir_s);
}
int i = 0;
while( (ftsfile = fts_read(fts)) != NULL){
//开始遍历文件，获取文件信息
// puts(ftsfile -> fts_name);
char* filename = ftsfile -> fts_name;
if(strstr(filename, ".mp4") != NULL){
puts(filename);
filesindir[i].file_name = filename;
filesindir[i].file_size = ftsfile -> fts_statp -> st_size;
printf(" the size of file == %lld\n", filesindir[i].file_size);
i++;
}
}
}