Add a LowercaseString() utility function, courtesy of brg.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14383 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 7 insertions, 0 deletions

diff --git a/include/Support/StringExtras.h b/include/Support/StringExtras.h
index 6b6472954e..0b45103aa3 100644
--- a/include/Support/StringExtras.h
+++ b/include/Support/StringExtras.h
@@ -97,6 +97,13 @@ static inline std::string ftostr(double V) {
   return Buffer;
 }
 
+std::string LowercaseString (const std::string &S) { 
+  std::string result (S);
+  for (unsigned i = 0; i < S.length(); ++i)
+    if (isupper (result[i]))
+      result[i] = tolower(result[i]);
+  return result;
+}
 
 /// getToken - This function extracts one token from source, ignoring any
 /// leading characters that appear in the Delimiters string, and ending the