From f2cc8287ed6a37a6141a60c83f7e30fe288e9606 Mon Sep 17 00:00:00 2001
From: "Michael J. Spencer" <bigcheesegs@gmail.com>
Date: Wed, 1 Dec 2010 20:37:30 +0000
Subject: Support/ADT/Twine: Add toNullTerminatedStringRef.

llvm-svn: 120600
---
 llvm/lib/Support/Twine.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'llvm/lib/Support/Twine.cpp')

diff --git a/llvm/lib/Support/Twine.cpp b/llvm/lib/Support/Twine.cpp
index 093e29de96a..4f6f479a7ea 100644
--- a/llvm/lib/Support/Twine.cpp
+++ b/llvm/lib/Support/Twine.cpp
@@ -30,6 +30,18 @@ StringRef Twine::toStringRef(SmallVectorImpl<char> &Out) const {
   return StringRef(Out.data(), Out.size());
 }
 
+StringRef Twine::toNullTerminatedStringRef(SmallVectorImpl<char> &Out) const {
+  if (isSingleStringRef()) {
+    StringRef sr = getSingleStringRef();
+    if (*(sr.begin() + sr.size()) == 0)
+      return sr;
+  }
+  toVector(Out);
+  Out.push_back(0);
+  Out.pop_back();
+  return StringRef(Out.data(), Out.size());
+}
+
 void Twine::printOneChild(raw_ostream &OS, const void *Ptr,
                           NodeKind Kind) const {
   switch (Kind) {
-- 
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