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/* yesno.c -- read a yes/no response from stdin
Copyright (C) 1990 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#ifdef CVSGUI
# include <string.h>
#endif /* CVSGUI */
/* Read one line from standard input
and return nonzero if that line begins with y or Y,
otherwise return 0. */
int
yesno ()
{
int c;
int rv;
#ifdef CVSGUI
char *response;
cvs_output("\n", 1);
response = getenv("CVSLIB_YESNO");
if(response != 0L)
return strcmp(response, "yes") == 0;
#endif /* CVSGUI*/
fflush (stderr);
fflush (stdout);
c = getchar ();
rv = (c == 'y') || (c == 'Y');
while (c != EOF && c != '\n')
c = getchar ();
return rv;
}
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