From 46e6bf17dbbb98781ee62f137cbe5bb3c93caca7 Mon Sep 17 00:00:00 2001
From: Dan Warner <info@danrw.com>
Date: Sun, 13 Nov 2022 13:14:27 +0000
Subject: [PATCH] update trim

---
 libsgp4/Util.cc | 15 ++-------------
 1 file changed, 2 insertions(+), 13 deletions(-)

diff --git a/libsgp4/Util.cc b/libsgp4/Util.cc
index af0019e..3437aab 100644
--- a/libsgp4/Util.cc
+++ b/libsgp4/Util.cc
@@ -23,26 +23,15 @@
 
 namespace libsgp4::Util
 {
-    namespace
-    {
-        struct IsDigit: std::unary_function<char, bool>
-        {
-            bool operator()(char c) const
-            {
-                return std::isdigit(c, std::locale::classic()) == 0;
-            }
-        };
-    }
-
     void TrimLeft(std::string& s)
     {
         s.erase(s.begin(),
-                std::find_if(s.begin(), s.end(), std::not1(IsDigit())));
+                std::find_if(s.begin(), s.end(), [](unsigned char c){ return std::isgraph(c) != 0; }));
     }
 
     void TrimRight(std::string& s)
     {
-        s.erase(std::find_if(s.rbegin(), s.rend(), std::not1(IsDigit())).base(),
+        s.erase(std::find_if(s.rbegin(), s.rend(), [](unsigned char c){ return std::isgraph(c) != 0; }).base(),
                 s.end());
     }