main.c 文件 1 #include <stdio.h> 2 #include <string.h> 3 #include <stdlib.h> 4 #include <glob.h> 5 #include <error.h> 6 #include <dirent.h> 7 #include "myls.h" 8 9 void stat_attbute(struct stat *buf); 10 int is_not_dir(char *name); 11 12 int main(int argc, char **argv) 13 { 14 int ch = 0; 15 struct stat buf; 16 char path[1024]; 17 DIR *dp = NULL; 18 struct dirent * ret; 19 20 char *optstring = "-lia"; 21 22 while(ch != -1) 23 { 24 ch = getopt(argc, argv, optstring); 25 26 if(argv[1] == NULL && ch == -1) 27 { 28 ch = 'm'; 29 strcpy(path, "."); 30 } 31 else 32 if(ch == 1) 33 34 strcpy(path,argv[optind - 1]); 35 36 dp = opendir(path); 37 38 39 switch(ch) 40 { 41 42 case 'l': 43 while(1) 44 { 45 ret = readdir(dp); 46 if(ret == NULL) 47 { 48 if(ret) 49 { 50 perror("readdir()"); 51 closedir(dp); 52 } 53 break; 54 } 55 if(!is_not_dir(ret->d_name)) 56 continue; 57 58 if(stat(ret->d_name, &buf)) 59 { 60 perror("stat()"); 61 closedir(dp); 62 } 63 stat_attbute(&buf); 64 printf("%s\n",ret->d_name); 65 } 66 break; 67 case 'i': 68 while(1) 69 { 70 ret = readdir(dp); 71 if(ret == NULL) 72 { 73 if(ret) 74 { 75 perror("readdir()"); 76 closedir(dp); 77 } 78 break; 79 } 80 if(!is_not_dir(ret->d_name)) 81 continue; 82 if(stat(ret->d_name, &buf)) 83 { 84 perror("stat()"); 85 closedir(dp); 86 return -1; 87 } 88 stat_ino(&buf); 89 printf("%s\n",ret->d_name); 90 } 91 break; 92 93 case 'a': 94 while(1) 95 { 96 ret = readdir(dp); 97 if(ret == NULL) 98 { 99 if(ret)100 {101 perror("readdir()");102 closedir(dp);103 }104 break;105 }106 printf("s ",ret->d_name);107 }108 break;109 110 case 'm':111 while(1)112 {113 ret = readdir(dp);114 if(ret == NULL)115 {116 if(ret)117 {118 perror("readdir()");119 closedir(dp);120 }121 break;122 }123 if(!is_not_dir(ret->d_name))124 continue;125 printf(" %s",ret->d_name);126 }127 ch = -1;128 break;129 130 case '?':131 printf("沒有此選項%s\n",argv[optind - 1]);132 break;133 default:134 break;135 }136 137 }138 139 140 141 return 0;142 }143 144 void stat_attbute(struct stat *buf)145 {146 147 stat_file(buf);//文件類型148 stat_mode(buf);//文件權(quán)限149 stat_link(buf);//hard link150 stat_usr(buf);//文件用戶名151 stat_gup(buf);//文件組用戶名152 stat_byte(buf);//文件字節(jié)大小153 stat_time(buf);//文件最后保存時間154 155 }156 157 int is_not_dir(char *name)158 {159 160 if(name[0] == '.')161 return 0;162 163 return 1;164 }165 166 myls.h文件 1 #ifndef __MYLS_H 2 #define __MYLS_H 3 #include <sys/types.h> 4 #include <sys/stat.h> 5 #include <fcntl.h> 6 #include <unistd.h> 7 #include <time.h> 8 #include <grp.h> 9 #include <pwd.h> 10 void stat_file(struct stat *buf);//文件類型 11 void stat_mode(struct stat *buf);//文件權(quán)限 12 void stat_link(struct stat *buf);//hard link 13 void stat_usr(struct stat *buf);//文件用戶名 14 void stat_gup(struct stat *buf);//文件組用戶名 15 void stat_byte(struct stat *buf);//文件字節(jié)大小 16 void stat_time(struct stat *buf);//文件最后保存時間 17 void stat_ino(struct stat *buf);//ino 18 #endif myls.c文件 1 #include <stdio.h> 2 #include "myls.h" 3 void stat_file(struct stat *buf)//文件類型 4 { 5 6 switch(buf->st_mode & S_IFMT) 7 { 8 case S_IFIFO : 9 printf("p"); 10 break; 11 12 case S_IFCHR : 13 printf("c"); 14 break; 15 16 case S_IFDIR : 17 printf("d"); 18 break; 19 20 case S_IFBLK : 21 printf("b"); 22 break; 23 case S_IFREG : 24 printf("-"); 25 break; 26 case S_IFLNK : 27 printf("l"); 28 break; 29 case S_IFSOCK : 30 printf("s"); 31 break; 32 } 33 34 35 } 36 void stat_mode(struct stat *buf)//文件權(quán)限 37 { 38 if(buf->st_mode & S_IRUSR) 39 printf("r"); 40 else 41 putchar('-'); 42 43 if(buf->st_mode & S_IWUSR) 44 printf("w"); 45 else 46 putchar('-'); 47 48 if(buf->st_mode & S_IXUSR) 49 printf("x"); 50 else 51 putchar('-'); 52 53 if(buf->st_mode & S_IRGRP) 54 printf("r"); 55 else 56 putchar('-'); 57 58 if(buf->st_mode & S_IWGRP) 59 printf("w"); 60 else 61 putchar('-'); 62 63 if(buf->st_mode & S_IXGRP) 64 printf("x"); 65 else 66 putchar('-'); 67 68 if(buf->st_mode & S_IROTH) 69 printf("r"); 70 else 71 putchar('-'); 72 73 if(buf->st_mode & S_IWOTH) 74 printf("w"); 75 else 76 putchar('-'); 77 78 if(buf->st_mode & S_IWOTH) 79 printf("x"); 80 else 81 putchar('-'); 82 putchar(' '); 83 } 84 void stat_link(struct stat *buf)//hard link 85 { 86 printf("%ld ", buf->st_nlink); 87 } 88 void stat_usr(struct stat *buf)//文件用戶名 89 { 90 struct passwd *pwd = NULL; 91 92 pwd = getpwuid(buf->st_uid); 93 94 printf("%s ",pwd->pw_name); 95 96 } 97 void stat_gup(struct stat *buf)//文件組用戶名 98 { 99 struct group *gnam = NULL;100 101 gnam = getgrgid(buf->st_gid);102 103 printf("%s ",gnam->gr_name);104 105 }106 void stat_byte(struct stat *buf)//文件字節(jié)大小107 {108 printf("%ld ",buf->st_size);109 110 }111 void stat_time(struct stat *buf)//文件最后保存時間112 {113 struct tm *times;114 char buff[1024];115 116 times = localtime(&buf->st_mtim.tv_sec);117 118 strftime(buff, 1024, "%m月 %d %H:%M", times);119 printf("%s ",buff);120 }121 void stat_ino(struct stat *buf)//ino122 {123 printf("%ld ",buf->st_ino);124 }~
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