From: Joel Rosdahl <joel@rosdahl.net>
Date: Mon, 13 Jul 2020 17:49:44 +0000 (+0200)
Subject: Make Util::to_lowercase work on nonstd::string_view
X-Git-Tag: v4.0~329
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9d0a1dfd72a800f5a7d4ae485df9daf8d2952b6c;p=thirdparty%2Fccache.git

Make Util::to_lowercase work on nonstd::string_view
---

diff --git a/src/Util.cpp b/src/Util.cpp
index 9218aa93f..337392fcf 100644
--- a/src/Util.cpp
+++ b/src/Util.cpp
@@ -819,10 +819,11 @@ strip_whitespace(const std::string& string)
 }
 
 std::string
-to_lowercase(const std::string& string)
+to_lowercase(string_view string)
 {
-  std::string result = string;
-  std::transform(result.begin(), result.end(), result.begin(), tolower);
+  std::string result;
+  result.resize(string.length());
+  std::transform(string.begin(), string.end(), result.begin(), tolower);
   return result;
 }
 
diff --git a/src/Util.hpp b/src/Util.hpp
index c455b2fb1..dd37c0630 100644
--- a/src/Util.hpp
+++ b/src/Util.hpp
@@ -322,7 +322,8 @@ strip_ansi_csi_seqs(nonstd::string_view string);
 strip_whitespace(const std::string& string);
 
 // Convert a string to lowercase.
-[[gnu::warn_unused_result]] std::string to_lowercase(const std::string& string);
+[[gnu::warn_unused_result]] std::string
+to_lowercase(nonstd::string_view string);
 
 // Traverse `path` recursively (postorder, i.e. files are visited before their
 // parent directory).