skel.c

   1 /* depend: */
   2 /* cflags: */
   3 /* linker: */
   4
   5 #include <assert.h>
   6 #include <getopt.h>
   7 #include <malloc.h>
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10
  11 /* macros */
  12
  13 #define CEIL(x, y) (((x) + (y) - 1) / (y))
  14 #define MIN(x, y) (((x) < (y)) ? (x) : (y))
  15 #define MAX(x, y) (((x) > (y)) ? (x) : (y))
  16 #define VERBOSE(level, statement...) do { if (level <= verbose) { statement; } } while(0)
  17
  18 /* gobal variables */
  19
  20 char *progname = NULL;
  21 int verbose = 0;
  22
  23 /* help function */
  24
  25 void usage (int ret)
  26 {
  27     FILE *fd = ret ? stderr : stdout;
  28     fprintf (fd, "usage: %s\n", progname);
  29     fprintf (fd, " -h : help message\n");
  30     fprintf (fd, " -v : verbose level (%d)\n", verbose);
  31
  32     exit (ret);
  33 }
  34
  35 /* main function */
  36
  37 int main (int argc, char *argv[])
  38 {
  39
  40     progname = argv[0];
  41
  42     int c;
  43     while ((c = getopt(argc, argv, "hv:")) != EOF) {
  44         switch (c) {
  45         case 'v':
  46             verbose = atoi (optarg);
  47             break;
  48         case 'h':
  49         default:
  50             usage (c != 'h');
  51         }
  52     }
  53     if (argc - optind != 0) {
  54         fprintf (stderr, "%s: invalid option -- %s\n", progname, argv[optind]);
  55         usage (1);
  56     }
  57
  58     printf ("work in progress...\n");
  59
  60     return 0;
  61 }
  62
  63 // test: skel.exe -h
  64 // test: skel.exe -h | awk '/usage:/ { rc=1 } END { exit (1-rc) }'
  65 // test: skel.exe -_ 2> /dev/null | awk 'END { if (NR == 0) { exit(0) } else exit (1) }'
  66 // test: skel.exe -_ 2>&1 | awk '/usage:/ { rc=1 } END { exit (1-rc) }'
  67
  68 /* vim: set ts=4 sw=4 et */