From 2c2efefde9df821fe0e30ac9b5b6a7f5e9c5b799 Mon Sep 17 00:00:00 2001
From: Davide Faconti <davide.faconti@gmail.com>
Date: Tue, 23 Jan 2024 12:45:19 +0100
Subject: [PATCH] 4.5.1

---
 CHANGELOG.rst                |  4 ++--
 README.md                    |  4 ++--
 package.xml                  |  2 +-
 src/controls/switch_node.cpp | 24 ++++++++++++++++++++++++
 4 files changed, 29 insertions(+), 5 deletions(-)

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index ccd1f97e6..a9cb4cb0d 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -2,8 +2,8 @@
 Changelog for package behaviortree_cpp
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-Forthcoming
------------
+4.5.1 (2024-01-23)
+------------------
 * Support enums and real numbers in Node Switch
 * improve Any::castPtr and add example
 * fix issue `#748 <https://github.com/BehaviorTree/BehaviorTree.CPP/issues/748>`_ : static error messages
diff --git a/README.md b/README.md
index add4b0f60..48ad13537 100644
--- a/README.md
+++ b/README.md
@@ -1,11 +1,11 @@
 ![License MIT](https://img.shields.io/github/license/BehaviorTree/BehaviorTree.CPP?color=blue)
-![Version](https://img.shields.io/badge/version-4.4-blue.svg)
+![Version](https://img.shields.io/badge/version-4.5-blue.svg)
 [![conan Ubuntu](https://github.com/BehaviorTree/BehaviorTree.CPP/actions/workflows/cmake_ubuntu.yml/badge.svg)](https://github.com/BehaviorTree/BehaviorTree.CPP/actions/workflows/cmake_ubuntu.yml)
 [![conan Windows](https://github.com/BehaviorTree/BehaviorTree.CPP/actions/workflows/cmake_windows.yml/badge.svg)](https://github.com/BehaviorTree/BehaviorTree.CPP/actions/workflows/cmake_windows.yml)
 [![ros1](https://github.com/BehaviorTree/BehaviorTree.CPP/workflows/ros1/badge.svg?branch=master)](https://github.com/BehaviorTree/BehaviorTree.CPP/actions?query=workflow%3Aros1)
 [![ros2](https://github.com/BehaviorTree/BehaviorTree.CPP/workflows/ros2/badge.svg?branch=master)](https://github.com/BehaviorTree/BehaviorTree.CPP/actions?query=workflow%3Aros2)
 
-# BehaviorTree.CPP 4.4
+# BehaviorTree.CPP 4.5
 
 <p align="center"><img width=350 src="animated.svg"></p>
 
diff --git a/package.xml b/package.xml
index 4ac69a49e..956e5427f 100644
--- a/package.xml
+++ b/package.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0"?>
 <package format="3">
   <name>behaviortree_cpp</name>
-  <version>4.5.0</version>
+  <version>4.5.1</version>
   <description>
   This package provides the Behavior Trees core library.
   </description>
diff --git a/src/controls/switch_node.cpp b/src/controls/switch_node.cpp
index 242d8aa96..02ad6095a 100644
--- a/src/controls/switch_node.cpp
+++ b/src/controls/switch_node.cpp
@@ -12,6 +12,10 @@
 
 #include "behaviortree_cpp/controls/switch_node.h"
 
+#if __has_include(<charconv>)
+#include <charconv>
+#endif
+
 namespace BT::details
 {
 
@@ -35,8 +39,18 @@ bool CheckStringEquality(const std::string &v1, const std::string &v2,
         return true;
       }
     }
+#if __cpp_lib_to_chars >= 201611L
     auto [ptr, ec] = std::from_chars(str.data(), str.data() + str.size(), result);
     return (ec == std::errc());
+#else
+    try {
+      result = std::stoi(str);
+      return true;
+    }
+    catch(...) {
+      return false;
+    }
+#endif
   };
   int v1_int = 0;
   int v2_int = 0;
@@ -47,8 +61,18 @@ bool CheckStringEquality(const std::string &v1, const std::string &v2,
   // compare as real numbers next
   auto ToReal = [](const std::string& str, auto& result) -> bool
   {
+#if __cpp_lib_to_chars >= 201611L
     auto [ptr, ec] = std::from_chars(str.data(), str.data() + str.size(), result);
     return (ec == std::errc());
+#else
+    try {
+      result = std::stod(str);
+      return true;
+    }
+    catch(...) {
+      return false;
+    }
+#endif
   };
   double v1_real = 0;
   double v2_real = 0;