2019.3.16王运达

  1 #include<stdio.h>
  2 #include<unistd.h>
  3 #include<sys/types.h>
  4 #include<sys/stat.h>
  5 #include<pwd.h>
  6 #include<grp.h>
  7 #include<time.h>
  8 #include<glob.h>
  9 #include<dirent.h>
 10 #include<errno.h>
 11 #include<string.h>
 12 static int l_show(char *path);
 13 static int is_dir(char *path);
 14 static int h_show(char *path);
 15 
 16 static int my_blocks(char *path)
 17 {
 18     struct stat mystat;
 19     int sum = 0;
 20     
 21     if(lstat(path,&mystat) < 0)
 22     {
 23         perror("lstat()");
 24         return -1;
 25     }    
 26     
 27     sum = mystat.st_blocks;
 28 
 29     return sum / 2;
 30 
 31 
 32     
 33 }
 34 
 35 static int a_show(char *path)
 36 {
 37     DIR *dp = NULL;
 38     struct dirent *a = NULL;
 39     dp = opendir(path);
 40     char buf[1024] = {};
 41     int sum = 0;
 42     if(dp == NULL)
 43     {
 44         perror("opendir()");
 45         return 1;
 46     }
 47 
 48     while(1)
 49     {
 50         a = readdir(dp);
 51         if(a == NULL)
 52         {
 53             if(errno)
 54             {
 55                 perror("readdir()");
 56                 return 1;
 57             }
 58             break;
 59         }
 60             memset(buf,'\0',1024);
 61             strcpy(buf,path);
 62             strcat(buf,"/");
 63             strcat(buf,a->d_name);
 64             sum += my_blocks(buf);
 65         printf("%s  ",a->d_name);
 66     }
 67     printf("\n");
 68     printf("总用量:%dk\n",sum);
 69     closedir(dp);
 70     return 0;
 71 }
 72 
 73 static int i_show(char *path)
 74 {
 75     struct stat mystat;
 76     DIR *dp = NULL;
 77     struct dirent *entry;
 78 
 79     if(lstat(path,&mystat) < 0)
 80     {
 81         perror("lstat()");
 82         return -1;
 83     }
 84 
 85     if(S_ISDIR(mystat.st_mode))
 86     {
 87         dp = opendir(path);
 88         if(dp == NULL)
 89         {
 90             perror("opendir()");
 91             return -1;
 92         }
 93 
 94         while(1)
 95         {    
 96             entry = readdir(dp);
 97             if(entry == NULL)
 98             {
 99                 if(errno)
100                 {
101                     perror("readdir()");
102                     return -1;
103                 }
104                 break;
105             }
106             if(entry->d_name[0] == '.')
107                 continue;
108             printf("%ld  ",entry->d_ino);
109             printf("%s\n",entry->d_name);
110         }
111         closedir(dp);
112     }
113     else
114     {
115         printf("%s\n",path);            
116     }
117 
118 
119     return 0;
120 }
121 
122 
123 int main(int argc,char *argv[])
124 {
125     char *optstring = "-laih";
126     struct stat mystat;
127     int c;
128     if(argc < 2)
129         return 1;
130     
131 
132     if(stat(argv[1],&mystat) == -1)
133     {
134         perror("stat()");
135         return 1;
136     }
137 
138     while(1)
139     {
140         c = getopt(argc,argv,optstring);
141         if(c == -1)
142             break;
143         switch(c)
144         {
145             case'l':
146                 is_dir(argv[1]);
147                 break;
148             case'h':
149                 h_show(argv[1]);
150                 printf("\n");
151                 break;
152             case'i':
153                 i_show(argv[1]);
154                 break;
155             case'a':
156                 a_show(argv[1]);
157                 break;
158             case'?':
159                 break;
160             case'1':
161                 printf("费选项参数%s\n",argv[optind-1]);
162             default:
163                 break;
164 
165         }
166     }
167     
168     return 0;    
169 }
170  
171 
172 static int h_show(char *path)
173 {
174     struct stat mystat;
175     DIR *dp = NULL;
176     struct dirent *entry;
177     int sum = 0;
178     char buf[1024] = {};
179 
180     if(lstat(path,&mystat) < 0)
181     {
182         perror("lstat()");
183         return -1;
184     }
185 
186     if(S_ISDIR(mystat.st_mode))
187     {
188         dp = opendir(path);
189         if(dp == NULL)
190         {
191             perror("opendir()");
192             return -1;
193         }
194 
195 
196         while(1)
197         {    
198             entry = readdir(dp);
199             if(entry == NULL)
200             {
201                 if(errno)
202                 {
203                     perror("readdir()");
204                     return -1;
205                 }
206                 break;
207             }
208             if(entry->d_name[0] == '.')
209                 continue;
210             printf("%s ",entry->d_name);
211             memset(buf,'\0',1024);
212             strcpy(buf,path);
213             strcat(buf,"/");
214             strcat(buf,entry->d_name);
215             sum += my_blocks(buf);
216         }
217         printf("总用量:%d k\n",sum);
218         closedir(dp);
219     }
220     else
221     {
222         printf("%s ",path);            
223     }
224 
225 
226     return 0;
227 }
228 
229 
230 
231 
232 static int is_dir(char *path)
233 {
234     struct stat mystat;
235     DIR *dp = NULL;
236     struct dirent *entry;
237     char buf[1024] = {};
238     char add[1024] = {};
239         
240     if(lstat(path,&mystat) < 0)
241     {
242         perror("lstat()");
243         return -1;
244     }
245 
246 
247     if(S_ISDIR(mystat.st_mode))
248     {
249         dp = opendir(path);
250         if(NULL == dp)
251         {
252             perror("opendir()");
253             return -1;
254         }
255 
256         while(1)
257         {    
258             memset(buf,'\0',1024);
259             strcpy(buf,path);
260             strcat(buf,"/");
261             entry = readdir(dp);
262             if(entry == NULL)
263             {
264                 if(errno)
265                 {
266                     perror("readdir()");
267                     return -1;
268                 }
269                 break;
270             }
271             memset(add,'\0',1024);
272             strcpy(add,entry->d_name);
273             if(add[0] == '.')
274             continue;
275             strcat(buf,entry->d_name);
276             l_show(buf);
277             printf("%s\n",entry->d_name);
278         }
279         closedir(dp);
280     }
281     else 
282         l_show(path);
283 
284 }
285 
286 static int l_show(char *path)
287 {
288     struct stat mystat;
289     struct passwd *p = NULL;
290     struct group *grp = NULL;
291     struct tm *tme = NULL;
292     char buf[1024] = {};
293 
294     if(lstat(path,&mystat) < 0)
295     {
296         perror("lstat()");
297         return -1;
298     }
299 
300     //文件类型    
301     switch(mystat.st_mode & S_IFMT)
302     {
303         case S_IFREG:
304             printf("-");
305             break;
306         case S_IFDIR:
307             printf("d");
308             break;
309         case S_IFBLK:
310             printf("b");
311             break;
312         case S_IFCHR:
313             printf("c");
314             break;
315         case S_IFIFO:
316             printf("p");
317             break;
318         case S_IFSOCK:
319             printf("s");
320             break;
321         case S_IFLNK:
322             printf("l");
323             break;
324         default:
325             break;
326     }
327     //文件拥有者权限
328     if(mystat.st_mode & S_IRUSR)
329         putchar('r');
330     else 
331         putchar('-');
332     if(mystat.st_mode & S_IWUSR)
333         putchar('w');
334     else 
335         putchar('-');
336     if(mystat.st_mode & S_IXUSR){
337         if(mystat.st_mode & S_ISUID){
338             putchar('s');
339         }else
340             putchar('x');
341     }else 
342         putchar('-');
343     
344     //文件所属组权限
345     if(mystat.st_mode & S_IRGRP)
346         putchar('r');
347     else 
348         putchar('-');
349     if(mystat.st_mode & S_IWGRP)
350         putchar('w');
351     else 
352         putchar('-');
353     if(mystat.st_mode & S_IXGRP){
354             putchar('x');
355     }else 
356         putchar('-');
357     
358     //文件其他组权限
359     if(mystat.st_mode & S_IROTH)
360         putchar('r');
361     else 
362         putchar('-');
363     if(mystat.st_mode & S_IWOTH)
364         putchar('w');
365     else 
366         putchar('-');
367     if(mystat.st_mode & S_IXOTH){
368             putchar('x');
369     }else 
370         putchar('-');
371     
372     
373     //硬链接
374     printf(" %ld ",mystat.st_nlink);
375     //文件拥有者名字
376     p = getpwuid(mystat.st_uid);
377     printf("%s ",p->pw_name);
378 
379 
380     //文件所属组名字
381     grp = getgrgid(mystat.st_gid);
382     printf("%s ",grp->gr_name);
383     
384     printf("%ld ",mystat.st_size);
385     
386 
387     tme = localtime(&mystat.st_mtim.tv_sec);
388     strftime(buf,1024,"%m月 %d  %H:%M",tme);
389     printf("%s  ",buf);
390 
391 
392     //printf(" %s ",argv[1]);
393     
394 }