source/texk/web2c/lib/usage.c

   1 /* usage.c: Output a help message (from help.h).
   2
   3    Modified in 2001 by O. Weber.
   4    Written in 1995 by K. Berry.  Public domain.  */
   5
   6 #include <w2c/config.h>
   7
   8 /* Call usage if the program exits with an "usage error".  STR is supposed
   9    to be the program name. */
  10
  11 void
  12 usage (const_string str)
  13 {
  14   fprintf (stderr, "Try `%s --help' for more information.\n", str);
  15   uexit (1);
  16 }
  17
  18 /* Call usage if the program exits by printing the help message.
  19    MESSAGE is a NULL-terminated array of strings which make up the
  20    help message.  Each string is printed on a separate line.
  21    We use arrays instead of a single string to work around compiler
  22    limitations (sigh).
  23 */
  24 void
  25 usagehelp (const_string *message, const_string bug_email)
  26 {
  27     if (!bug_email)
  28         bug_email = "tex-k@tug.org";
  29     while (*message) {
  30         printf("%s\n", *message);
  31         ++message;
  32     }
  33     printf("\nEmail bug reports to %s.\n", bug_email);
  34     uexit(0);
  35 }