fe

terminal file explorer and picker
options.c

(3048B)
      1 #include <getopt.h>
      2 #include <stdio.h>
      3 #include <stdlib.h>
      4 #include <string.h>
      5 #include <limits.h>
      6 #include "options.h"
      7 
      8 static const char *usage_str =
      9     ""
     10     "Usage: fe [OPTION] [path]\n"
     11     " -n, --num-files=LINES    Specify how many files to display\n"
     12     " -t, --tty=TTY            Specify file to use as TTY device (default /dev/tty)\n"
     13     " -r, --run=file           Run program when file is selected\n"
     14     " -d, --sort-directory     Sort by directories first\n"
     15     " -m, --sort-mtime         Sort by time modified\n"
     16     " -i, --sort-icase         Sort case insensitively\n"
     17     " -a, --all                Show all hidden files\n"
     18     " -h, --help               Display this help and exit\n"
     19     " -v, --version            Output version information and exit\n";
     20 
     21 static void usage(const char *argv0) {
     22     fprintf(stderr, usage_str, argv0);
     23 }
     24 
     25 static struct option longopts[] = {
     26     {"num-files", required_argument, NULL, 'l'},
     27     {"tty", required_argument, NULL, 't'},
     28     {"run", required_argument, NULL, 'r'},
     29     {"sort-directory", no_argument, NULL, 'd'},
     30     {"sort-mtime", no_argument, NULL, 'm'},
     31     {"sort-icase", no_argument, NULL, 'i'},
     32     {"all", no_argument, NULL, 'a'},
     33     {"version", no_argument, NULL, 'v'},
     34     {"help", no_argument, NULL, 'h'},
     35     {NULL, 0, NULL, 0}
     36 };
     37 
     38 void options_parse(options_t *options, int argc, char *argv[]) {
     39     int c;
     40     while ((c = getopt_long(argc, argv, "vhadmr:i:n:t:", longopts, NULL)) != -1) {
     41         switch (c) {
     42             case 't':
     43                 options->tty_filename = optarg;
     44                 break;
     45             case 'r':
     46                 options->run = optarg;
     47                 break;
     48             case 'n': {
     49                           int n;
     50                           if (!strcmp(optarg, "max")) {
     51                               n = INT_MAX;
     52                           } else if (sscanf(optarg, "%d", &n) != 1 || n < 3) {
     53                               fprintf(stderr, "Invalid format for --num-files: %s\n", optarg);
     54                               fprintf(stderr, "Must be integer in range 3..\n");
     55                               usage(argv[0]);
     56                               exit(EXIT_FAILURE);
     57                           }
     58                           options->num_files = n;
     59                       } break;
     60             case 'd':
     61                 options->sort_dir = 1;
     62                 break;
     63             case 'm':
     64                 options->sort_mtime = 1;
     65                 break;
     66             case 'i':
     67                 options->sort_icase = 1;
     68                 break;
     69             case 'a':
     70                 options->show_hidden = 1;
     71                 break;
     72             case 'v':
     73                 printf("%s " VERSION " © 2025 Jul\n", argv[0]);
     74                 exit(EXIT_SUCCESS);
     75             case 'h':
     76             default:
     77                       usage(argv[0]);
     78                       exit(EXIT_SUCCESS);
     79         }
     80     }
     81 
     82     if (argc - optind > 1) {
     83         usage(argv[0]);
     84         exit(EXIT_FAILURE);
     85     }
     86 
     87     if (optind < argc) {
     88         options->path = argv[optind];
     89     }
     90 }