#include <unistd.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include <stdio.h>
#include<time.h>
#define oop(what){perror(what);exit(1);}
void display(DIR *);
void display1(char *);
void opend(char *);
DIR *dir_fp,*dir_fp1;
char *p1;
struct dirent *dir_ent;
int main(int ac,char * as[]){
if(ac==3){
if(strcmp(as[1],"-l")!=0){
oop("错误的参数");
}else{
struct stat st2;
stat(as[2],&st2);
if(S_ISREG(st2.st_mode)){
opend(".");
display1(as[2]);
exit(0);
}else if(S_ISDIR(st2.st_mode)){
opend(as[2]);
while((dir_ent=readdir(dir_fp))!=NULL){
printf("文件名%s\n",dir_ent->d_name);
fflush(stdout);
display1(dir_ent->d_name);
}
}
}
}
else if(ac==2){
if(strcmp(as[1],"-l")==0){
opend(".");
while((dir_ent=readdir(dir_fp))!=NULL){
display1(dir_ent->d_name);
}
exit(0);
}else {
opend(".");
while((dir_ent=readdir(dir_fp))!=NULL){
if(strcmp(dir_ent->d_name,as[1])==0){
printf("此文件或文件夹存在\n");
exit(0);
}
}
printf("ls: 无法访问 %s: 没有该文件或目录",as[1]);
exit(0);
}
}
else
opend(".");
display(dir_fp);
}
void display(DIR *dir_fp){
while((dir_ent=readdir(dir_fp))!=NULL){
printf("%s\n",dir_ent->d_name);
//printf("权限%s 链接数%d 所属者%s 所属组%s 文件大小%d 最后修改日期%s 文件名%s",tmpent->mod,);
}
}
void opend(char *kl){
dir_fp=opendir(kl);
if(dir_fp==NULL)
oop("目录打开错误");
}
void display1(char *pp){
printf("kkk %s\n",pp);
struct stat st1;
if(stat(pp,&st1)==-1)
oop("文件不存在或者打开错误");
printf(" %d %d %d %d %d %u %s\n",st1.st_mode,st1.st_nlink,st1.st_uid,st1.st_gid,st1.st_size,st1.st_atime,pp);
}
