2 files changed, 13 insertions, 1 deletions
diff --git a/src/Libraries/General/StringRef.cpp b/src/Libraries/General/StringRef.cpp
index a05e6070..7b0840c1 100644
--- a/src/Libraries/General/StringRef.cpp
+++ b/src/Libraries/General/StringRef.cpp
@@ -8,6 +8,7 @@
 #include "StringRef.h"
 #include <cstring>
 #include <cstdio>
+#include "WMath.h"
 
 // Need to define strnlen here because it isn't ISO standard
 size_t strnlen(const char *s, size_t n)
@@ -110,6 +111,16 @@ size_t StringRef::StripTrailingSpaces() const
 	return slen;
 }
 
+size_t StringRef::Prepend(const char *src) const
+{
+	const size_t slen = ::strlen(src);
+	const size_t dlen = strlen();
+	const size_t newLen = min<size_t>(dlen + slen, len - 1);
+	memmove(p + slen, p, newLen - slen + 1);
+	memcpy(p, src, slen);
+	return newLen;
+}
+
 // End
 
 
diff --git a/src/Libraries/General/StringRef.h b/src/Libraries/General/StringRef.h
index 9660389a..09ddaa24 100644
--- a/src/Libraries/General/StringRef.h
+++ b/src/Libraries/General/StringRef.h
@@ -33,7 +33,7 @@ public:
 
 	void Clear() const { p[0] = 0; }
 
-	int printf(const char *fmt, ...) const  __attribute__ ((format (printf, 2, 3)));
+	int printf(const char *fmt, ...) const __attribute__ ((format (printf, 2, 3)));
 	int vprintf(const char *fmt, va_list vargs) const;
 	int catf(const char *fmt, ...) const __attribute__ ((format (printf, 2, 3)));
 	int vcatf(const char *fmt, va_list vargs) const;
@@ -41,6 +41,7 @@ public:
 	size_t cat(const char *src) const;
 	size_t cat(char c) const;
 	size_t StripTrailingSpaces() const;
+	size_t Prepend(const char *src) const;
 
 	bool IsEmpty() const { return p[0] == 0; }
 };