1 files changed, 36 insertions, 0 deletions

diff --git a/libbb/ask_confirmation.c b/libbb/ask_confirmation.c
new file mode 100644
index 000000000..4642fa036
--- /dev/null
+++ b/libbb/ask_confirmation.c
@@ -0,0 +1,36 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * bb_ask_confirmation implementation for busybox
+ *
+ * Copyright (C) 2003  Manuel Novoa III  <mjn3@codepoet.org>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+/* Read a line from stdin.  If the first non-whitespace char is 'y' or 'Y',
+ * return 1.  Otherwise return 0.
+ */
+
+#include <stdio.h>
+#include <ctype.h>
+#include "libbb.h"
+
+int bb_ask_confirmation(void)
+{
+        int retval = 0;
+        int first = 1;
+        int c;
+
+        while (((c = getchar()) != EOF) && (c != '\n')) {
+                /* Make sure we get the actual function call for isspace,
+                 * as speed is not critical here. */
+                if (first && !(isspace)(c)) {
+                        --first;
+                        if ((c == 'y') || (c == 'Y')) {
+                                ++retval;
+                        }
+                }
+        }
+
+        return retval;
+}