refactor: rewrite to c++

1 files changed, 34 insertions, 0 deletions

diff --git a/src/utils.cpp b/src/utils.cpp
new file mode 100644
index 0000000..30ff4ec
--- /dev/null
+++ b/src/utils.cpp
@@ -0,0 +1,34 @@
+#include "utils.hpp"
+#include <climits>
+#include <stdexcept>
+
+unsigned int str_to_uint(std::string str)
+{
+	if (str.at(0) == '-')
+		throw "Less than 0";
+
+	std::size_t waste_pos;
+
+	unsigned long num;
+
+	try
+	{
+		num = std::stoul(str, &waste_pos, 10);
+	}
+	catch (const std::invalid_argument &exc)
+	{
+		throw "Not a number";
+	}
+	catch (const std::out_of_range &exc)
+	{
+		throw "Out of range";
+	}
+
+	if (waste_pos != str.length())
+		throw "Not a number";
+
+	if (num > (unsigned long)UINT_MAX)
+		throw "Out of range";
+
+	return (unsigned int)num;
+}