1 files changed, 24 insertions, 0 deletions

diff --git a/libbb/last_char_is.c b/libbb/last_char_is.c
new file mode 100644
index 000000000..3616d5916
--- /dev/null
+++ b/libbb/last_char_is.c
@@ -0,0 +1,24 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * busybox library eXtended function
+ *
+ * Copyright (C) 2001 Larry Doolittle, <ldoolitt@recycle.lbl.gov>
+ *
+ * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
+ */
+
+#include "libbb.h"
+
+/* Find out if the last character of a string matches the one given Don't
+ * underrun the buffer if the string length is 0.  Also avoids a possible
+ * space-hogging inline of strlen() per usage.
+ */
+char* last_char_is(const char *s, int c)
+{
+        if (s) {
+                s = strrchr(s, c);
+                if (s && !s[1])
+                        return (char*)s;
+        }
+        return NULL;
+}