79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif
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/*
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* FreeBSD install - a package for the installation and maintainance
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* of non-core utilities.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* Jordan K. Hubbard
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* 18 July 1993
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*
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* Miscellaneous message routines.
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*
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*/
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#include <err.h>
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#include <paths.h>
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#include "lib.h"
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/* Die a relatively simple death */
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void
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upchuck(const char *err)
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{
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cleanup(0);
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errx(1, "fatal error during execution: %s", err);
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}
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/*
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* As a yes/no question, prompting from the varargs string and using
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* default if user just hits return.
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*/
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Boolean
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y_or_n(Boolean def, const char *msg, ...)
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{
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va_list args;
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int ch = 0;
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FILE *tty;
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va_start(args, msg);
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/*
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* Need to open /dev/tty because file collection may have been
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* collected on stdin
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*/
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tty = fopen(_PATH_TTY, "r");
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if (!tty) {
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cleanup(0);
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errx(2, "can't open %s!", _PATH_TTY);
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}
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while (ch != 'Y' && ch != 'N') {
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vfprintf(stderr, msg, args);
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if (def)
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fprintf(stderr, " [yes]? ");
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else
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fprintf(stderr, " [no]? ");
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fflush(stderr);
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if (AutoAnswer) {
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ch = (AutoAnswer == YES) ? 'Y' : 'N';
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fprintf(stderr, "%c\n", ch);
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}
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else
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ch = toupper(fgetc(tty));
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if (ch == '\n')
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ch = (def) ? 'Y' : 'N';
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}
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fclose(tty) ;
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return (ch == 'Y') ? TRUE : FALSE;
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}
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