dmenu

my fork of dmenu
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stest.c (3229B)
   1 /* See LICENSE file for copyright and license details. */
   2 #include <sys/stat.h>
   3 
   4 #include <dirent.h>
   5 #include <limits.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <unistd.h>
  10 
  11 #include "arg.h"
  12 char *argv0;
  13 
  14 #define FLAG(x)  (flag[(x)-'a'])
  15 
  16 static void test(const char *, const char *);
  17 static void usage(void);
  18 
  19 static int match = 0;
  20 static int flag[26];
  21 static struct stat old, new;
  22 
  23 static void
  24 test(const char *path, const char *name)
  25 {
  26     struct stat st, ln;
  27 
  28     if ((!stat(path, &st) && (FLAG('a') || name[0] != '.')        /* hidden files      */
  29     && (!FLAG('b') || S_ISBLK(st.st_mode))                        /* block special     */
  30     && (!FLAG('c') || S_ISCHR(st.st_mode))                        /* character special */
  31     && (!FLAG('d') || S_ISDIR(st.st_mode))                        /* directory         */
  32     && (!FLAG('e') || access(path, F_OK) == 0)                    /* exists            */
  33     && (!FLAG('f') || S_ISREG(st.st_mode))                        /* regular file      */
  34     && (!FLAG('g') || st.st_mode & S_ISGID)                       /* set-group-id flag */
  35     && (!FLAG('h') || (!lstat(path, &ln) && S_ISLNK(ln.st_mode))) /* symbolic link     */
  36     && (!FLAG('n') || st.st_mtime > new.st_mtime)                 /* newer than file   */
  37     && (!FLAG('o') || st.st_mtime < old.st_mtime)                 /* older than file   */
  38     && (!FLAG('p') || S_ISFIFO(st.st_mode))                       /* named pipe        */
  39     && (!FLAG('r') || access(path, R_OK) == 0)                    /* readable          */
  40     && (!FLAG('s') || st.st_size > 0)                             /* not empty         */
  41     && (!FLAG('u') || st.st_mode & S_ISUID)                       /* set-user-id flag  */
  42     && (!FLAG('w') || access(path, W_OK) == 0)                    /* writable          */
  43     && (!FLAG('x') || access(path, X_OK) == 0)) != FLAG('v')) {   /* executable        */
  44         if (FLAG('q'))
  45             exit(0);
  46         match = 1;
  47         puts(name);
  48     }
  49 }
  50 
  51 static void
  52 usage(void)
  53 {
  54     fprintf(stderr, "usage: %s [-abcdefghlpqrsuvwx] "
  55             "[-n file] [-o file] [file...]\n", argv0);
  56     exit(2); /* like test(1) return > 1 on error */
  57 }
  58 
  59 int
  60 main(int argc, char *argv[])
  61 {
  62     struct dirent *d;
  63     char path[PATH_MAX], *line = NULL, *file;
  64     size_t linesiz = 0;
  65     ssize_t n;
  66     DIR *dir;
  67     int r;
  68 
  69     ARGBEGIN {
  70     case 'n': /* newer than file */
  71     case 'o': /* older than file */
  72         file = EARGF(usage());
  73         if (!(FLAG(ARGC()) = !stat(file, (ARGC() == 'n' ? &new : &old))))
  74             perror(file);
  75         break;
  76     default:
  77         /* miscellaneous operators */
  78         if (strchr("abcdefghlpqrsuvwx", ARGC()))
  79             FLAG(ARGC()) = 1;
  80         else
  81             usage(); /* unknown flag */
  82     } ARGEND;
  83 
  84     if (!argc) {
  85         /* read list from stdin */
  86         while ((n = getline(&line, &linesiz, stdin)) > 0) {
  87             if (n && line[n - 1] == '\n')
  88                 line[n - 1] = '\0';
  89             test(line, line);
  90         }
  91         free(line);
  92     } else {
  93         for (; argc; argc--, argv++) {
  94             if (FLAG('l') && (dir = opendir(*argv))) {
  95                 /* test directory contents */
  96                 while ((d = readdir(dir))) {
  97                     r = snprintf(path, sizeof path, "%s/%s",
  98                                  *argv, d->d_name);
  99                     if (r >= 0 && (size_t)r < sizeof path)
 100                         test(path, d->d_name);
 101                 }
 102                 closedir(dir);
 103             } else {
 104                 test(*argv, *argv);
 105             }
 106         }
 107     }
 108     return match ? 0 : 1;
 109 }