Improve ToLower() performance significally.

1 files changed, 8 insertions, 4 deletions

diff --git a/src/shared/util.cpp b/src/shared/util.cpp
index bad0d64d..ed7c434e 100644
--- a/src/shared/util.cpp
+++ b/src/shared/util.cpp
@@ -108,27 +108,31 @@ static auto locToLower = [] (char in) -> char {
 

 std::string &ToLower(std::string &text)

 {

-  std::transform(text.begin(), text.end(), text.begin(), locToLower);

+  //std::transform(text.begin(), text.end(), text.begin(), locToLower);

+  CharLowerBuffA(const_cast<CHAR *>(text.c_str()), static_cast<DWORD>(text.size()));

   return text;

 }

 

 std::string ToLower(const std::string &text)

 {

   std::string result(text);

-  std::transform(result.begin(), result.end(), result.begin(), locToLower);

+  //std::transform(result.begin(), result.end(), result.begin(), locToLower);

+  CharLowerBuffA(const_cast<CHAR *>(result.c_str()), static_cast<DWORD>(result.size()));

   return result;

 }

 

 std::wstring &ToLower(std::wstring &text)

 {

-  std::transform(text.begin(), text.end(), text.begin(), locToLowerW);

+  //std::transform(text.begin(), text.end(), text.begin(), locToLowerW);

+  CharLowerBuffW(const_cast<WCHAR *>(text.c_str()), static_cast<DWORD>(text.size()));

   return text;

 }

 

 std::wstring ToLower(const std::wstring &text)

 {

   std::wstring result(text);

-  std::transform(result.begin(), result.end(), result.begin(), locToLowerW);

+  //std::transform(result.begin(), result.end(), result.begin(), locToLowerW);

+  CharLowerBuffW(const_cast<WCHAR *>(result.c_str()), static_cast<DWORD>(result.size()));

   return result;

 }