本文:http://www.cnblogs.com/xudong-bupt/p/3504442.html
Linux C 下面读取文件夹要用到结构体struct dirent,在头#include <dirent.h>中,如下:
#include <dirent.h> struct dirent {long d_ino; /* inode number 索引节点号 */off_t d_off; /* offset to this dirent 在目录文件中的偏移 */unsigned short d_reclen; /* length of this d_name 文件名长 */unsigned char d_type; /* the type of d_name 文件类型 */char d_name [NAME_MAX+1]; /* file name (null-terminated) 文件名,最长255字符 */ }
其中d_type表明该文件的类型:文件(8)、目录(4)、链接文件(10)等。
下面程序,递归读取某文件夹及其子文件夹下所有文件名:
1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <string.h> 4 #include <dirent.h> 5 #include <unistd.h> 6 int readFileList(char *basePath) 7 { 8 DIR *dir; 9 struct dirent *ptr; 10 char base[1000]; 11 12 if ((dir=opendir(basePath)) == NULL) 13 { 14 perror("Open dir error..."); 15 exit(1); 16 } 17 18 while ((ptr=readdir(dir)) != NULL) 19 { 20 if(strcmp(ptr->d_name,".")==0 || strcmp(ptr->d_name,"..")==0) ///current dir OR parrent dir 21 continue; 22 else if(ptr->d_type == 8) ///file 23 printf("d_name:%s/%s\n",basePath,ptr->d_name); 24 else if(ptr->d_type == 10) ///link file 25 printf("d_name:%s/%s\n",basePath,ptr->d_name); 26 else if(ptr->d_type == 4) ///dir 27 { 28 memset(base,'\0',sizeof(base)); 29 strcpy(base,basePath); 30 strcat(base,"/"); 31 strcat(base,ptr->d_name); 32 readFileList(base); 33 } 34 } 35 closedir(dir); 36 return 1; 37 } 38 39 int main(void) 40 { 41 DIR *dir; 42 char basePath[1000]; 43 44 ///get the current absoulte path 45 memset(basePath,'\0',sizeof(basePath)); 46 getcwd(basePath, 999); 47 printf("the current dir is : %s\n",basePath); 48 49 ///get the file list 50 memset(basePath,'\0',sizeof(basePath)); 51 strcpy(basePath,"./XL"); 52 readFileList(basePath); 53 return 0; 54 }
执行输出 :