From ec5ffe8839c9c993fed4c23d72077969615dd298 Mon Sep 17 00:00:00 2001
From: vaxerski <43317083+vaxerski@users.noreply.github.com>
Date: Wed, 28 Sep 2022 15:32:53 +0100
Subject: [PATCH] rewrite isNumber

---
 src/helpers/MiscFunctions.cpp | 20 +++++++++++++++++++-
 1 file changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/helpers/MiscFunctions.cpp b/src/helpers/MiscFunctions.cpp
index 67debf32..b2f3a086 100644
--- a/src/helpers/MiscFunctions.cpp
+++ b/src/helpers/MiscFunctions.cpp
@@ -170,7 +170,25 @@ float getPlusMinusKeywordResult(std::string source, float relative) {
 }
 
 bool isNumber(const std::string& str, bool allowfloat) {
-    return std::ranges::all_of(str.begin(), str.end(), [&](char c) { return isdigit(c) != 0 || c == '-' || (allowfloat && c == '.'); });
+
+    std::string copy = str;
+    if (*copy.begin() == '-')
+        copy = copy.substr(1);
+
+    bool point = !allowfloat;
+    for (auto& c : copy) {
+        if (c == '.') {
+            if (point)
+                return false;
+            point = true;
+            break;
+        }
+
+        if (!std::isdigit(c))
+            return false;
+    }
+
+    return true;
 }
 
 bool isDirection(const std::string& arg) {