/* yesno.c -- read a yes/no response from stdin
- Copyright (C) 1990 Free Software Foundation, Inc.
+ Copyright (C) 1990, 1998 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
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <ctype.h>
+#if HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
#include <stdio.h>
/* Read one line from standard input
and return nonzero if that line begins with y or Y,
otherwise return 0. */
+int rpmatch ();
+
int
yesno ()
{
+ /* We make some assumptions here:
+ a) leading white space in the response are not vital
+ b) the first 128 characters of the answer are enough (the rest can
+ be ignored)
+ I cannot think for a situation where this is not ok. --drepper@gnu */
+ char buf[128];
+ int len = 0;
int c;
- int rv;
- fflush (stderr);
- c = getchar ();
- rv = (c == 'y') || (c == 'Y');
- while (c != EOF && c != '\n')
- c = getchar ();
+ while ((c = getchar ()) != EOF && c != '\n')
+ if ((len > 0 && len < 127) || (len == 0 && !isspace (c)))
+ buf[len++] = c;
+ buf[len] = '\0';
- return rv;
+ return rpmatch (buf) == 1;
}