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#ifndef lint
static const char *rcsid = "$Id: msg.c,v 1.4 1994/06/01 05:14:19 asami Exp $";
#endif
/*
* FreeBSD install - a package for the installation and maintainance
* of non-core utilities.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Jordan K. Hubbard
* 18 July 1993
*
* Miscellaneous message routines.
*
*/
#include "lib.h"
/* Die a relatively simple death */
void
upchuck(const char *err)
{
fprintf(stderr, "Fatal error during execution: ");
perror(err);
cleanup(0);
exit(1);
}
/* Die a more complex death */
void
barf(const char *err, ...)
{
va_list args;
va_start(args, err);
vfprintf(stderr, err, args);
fputc('\n', stderr);
va_end(args);
cleanup(0);
exit(2);
}
/* Get annoyed about something but don't go to pieces over it */
void
whinge(const char *err, ...)
{
va_list args;
va_start(args, err);
vfprintf(stderr, err, args);
fputc('\n', stderr);
va_end(args);
}
/*
* As a yes/no question, prompting from the varargs string and using
* default if user just hits return.
*/
Boolean
y_or_n(Boolean def, const char *msg, ...)
{
va_list args;
int ch = 0;
FILE *tty;
va_start(args, msg);
/*
* Need to open /dev/tty because file collection may have been
* collected on stdin
*/
tty = fopen("/dev/tty", "r");
if (!tty)
barf("Can't open /dev/tty!\n");
while (ch != 'Y' && ch != 'N') {
vfprintf(stderr, msg, args);
if (def)
fprintf(stderr, " [yes]? ");
else
fprintf(stderr, " [no]? ");
fflush(stderr);
if (AutoAnswer) {
ch = (AutoAnswer == YES) ? 'Y' : 'N';
fprintf(stderr, "%c\n", ch);
}
else
ch = toupper(fgetc(tty));
if (ch == '\n')
ch = (def) ? 'Y' : 'N';
}
fclose(tty) ;
return (ch == 'Y') ? TRUE : FALSE;
}
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