libpaper/trunk/localepaper.c

   1 /*
   2  * localepaper: print the dimensions in mm of the current locale's
   3  * paper size, if possible.
   4  *
   5  * Based on a patch by Caolan McNamara:
   6  * http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=481213
   7  *
   8  * Copyright (C) Reuben Thomas <rrt@sc3d.org>, 2013.
   9  *
  10  * Copying and distribution of this file, with or without modification,
  11  * are permitted in any medium without royalty provided the copyright
  12  * notice and this notice are preserved.
  13  */
  14
  15 #include <config.h>
  16
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <locale.h>
  20 #if defined LC_PAPER && defined _GNU_SOURCE
  21 #include <langinfo.h>
  22 #endif
  23
  24 #include "progname.h"
  25
  26 int main(int argc, char *argv[])
  27 {
  28   set_program_name(argv[0]);
  29   argc = argc; /* Avoid a compiler warning. */
  30
  31 #if defined LC_PAPER && defined _GNU_SOURCE
  32   setlocale(LC_ALL, "");
  33
  34 #define NL_PAPER_GET(x) \
  35   ((union { char *string; unsigned word; })nl_langinfo(x)).word
  36
  37   printf("%d %d\n", NL_PAPER_GET(_NL_PAPER_WIDTH), NL_PAPER_GET(_NL_PAPER_HEIGHT));
  38   return EXIT_SUCCESS;
  39
  40 #else
  41   printf("%s: locale paper size information is not supported on this system", program_name);
  42   return EXIT_FAILURE;
  43 #endif
  44 }