1 files changed, 28 insertions, 0 deletions
diff --git a/src/libstddjb/str_rchr.c b/src/libstddjb/str_rchr.c
new file mode 100644
index 0000000..39a4822
--- /dev/null
+++ b/src/libstddjb/str_rchr.c
@@ -0,0 +1,28 @@
+/* ISC license. */
+
+#include <skalibs/config.h>
+#include <skalibs/bytestr.h>
+
+#ifndef SKALIBS_FLAG_REPLACE_LIBC
+
+#include <string.h>
+
+unsigned int str_rchr (register char const *s, int c)
+{
+  register char *p = strrchr(s, c) ;
+  return p ? (unsigned int)(p - s) : (unsigned int)strlen(s) ;
+}
+
+#else
+
+unsigned int str_rchr (register char const *s, int c)
+{
+  register char ch = c ;
+  register char const *t = s ;
+  register char const *u = 0 ;
+  for ( ; *t ; t++) if (*t == ch) u = t ;
+  if (!u) u = t ;
+  return u - s ;
+}
+
+#endif