diff options
Diffstat (limited to 'lib/yesno.c')
-rw-r--r-- | lib/yesno.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/lib/yesno.c b/lib/yesno.c new file mode 100644 index 0000000..2400628 --- /dev/null +++ b/lib/yesno.c @@ -0,0 +1,64 @@ +/* yesno.c -- read a yes/no response from stdin + + Copyright (C) 1990, 1998, 2001, 2003, 2004, 2005, 2006 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. + + 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + +#include <config.h> + +#include "yesno.h" + +#include <stdlib.h> +#include <stdio.h> + +#if ENABLE_NLS +# include "getline.h" +#endif + +/* Return true if we read an affirmative line from standard input. */ + +extern int rpmatch (char const *response); + +bool +yesno (void) +{ + bool yes; + +#if ENABLE_NLS + char *response = NULL; + size_t response_size = 0; + ssize_t response_len = getline (&response, &response_size, stdin); + + if (response_len <= 0) + yes = false; + else + { + response[response_len - 1] = '\0'; + yes = (0 < rpmatch (response)); + } + + free (response); +#else + /* Test against "^[yY]", hardcoded to avoid requiring getline, + regex, and rpmatch. */ + int c = getchar (); + yes = (c == 'y' || c == 'Y'); + while (c != '\n' && c != EOF) + c = getchar (); +#endif + + return yes; +} |