1 files changed, 15 insertions, 0 deletions
diff --git a/src/portable.cpp b/src/portable.cpp
index 1134351..9927c45 100644
--- a/src/portable.cpp
+++ b/src/portable.cpp
@@ -475,3 +475,18 @@ void Portable::setShortDir(void)
   delete [] buffer;
 #endif
 }
+
+
+char *Portable::strnstr(const char *haystack, const char *needle, size_t haystack_len)
+{
+  size_t needle_len = strnlen(needle, haystack_len);
+  if (needle_len < haystack_len || !needle[needle_len]) 
+  {
+    char *x = static_cast<char*>(memmem(haystack, haystack_len, needle, needle_len));
+    if (x && !memchr(haystack, 0, x - haystack))
+    {
+      return x;
+    }
+  }
+  return 0;
+}