Move std::stou to integer.h, add intToHex util

inferno/src/inferno/render/font.cpp

@@ -1,11 +1,11 @@
 #include <limits> // std::numeric_limits
-#include <string> // std::getline
+#include <string> // std::getline, std::stoi
 
 #include "inferno/assert.h"
 #include "inferno/io/file.h"
 #include "inferno/render/font.h"
 #include "inferno/render/texture.h"
-#include "inferno/util/string.h"
+#include "inferno/util/integer.h"
 
 namespace Inferno {
 

inferno/src/inferno/util/integer.h

@@ -0,0 +1,27 @@
+#ifndef INTEGER_UTIL_H
+#define INTEGER_UTIL_H
+
+#include <limits>  // std::numeric_limits
+#include <string>  // std::string, std::stoul
+
+#include "inferno/assert.h"
+
+namespace std {
+
+	// Can't believe this is not in the standard library
+
+	inline uint32_t stou(const std::string& string)
+	{
+		unsigned long size = std::stoul(string);
+		ASSERT(size <= std::numeric_limits<uint32_t>::max(), "String util not in uint32_t range '{}'", string);
+		return static_cast<uint32_t>(size);
+	}
+
+	inline uint32_t stou(const char* string)
+	{
+		return stou(std::string(string));
+	}
+
+} // namespace std
+
+#endif // INTEGER_UTIL_H

inferno/src/inferno/util/string.h

@@ -1,27 +1,22 @@
-#ifndef UTIL_STRING_H
+#ifndef STRING_UTIL_H
-#define UTIL_STRING_H
+#define STRING_UTIL_H
 
-#include <limits> // std::numeric_limits
+#include <iomanip> // std::setfill, std::setw
-#include <string> // std::string, std::stoul
+#include <sstream> // std::stringstream
 
-#include "inferno/assert.h"
+namespace Inferno {
 
-namespace std {
+	template<typename T>
-
+	std::string intToHex(T i)
-	// Can't believe this is not in the standard library
-
-	inline uint32_t stou(const std::string& string)
 	{
-		unsigned long size = std::stoul(string);
+		std::stringstream stream;
-		ASSERT(size <= std::numeric_limits<uint32_t>::max(), "String util not in uint32_t range '{}'", string);
+		stream << "0x"
-		return static_cast<uint32_t>(size);
+		       << std::setfill('0') << std::setw(sizeof(T) * 2)
+		       << std::hex << i;
+
+		return stream.str();
 	}
 
-	inline uint32_t stou(const char* string)
+} // namespace Inferno
-	{
-		return stou(std::string(string));
-	}
 
-} // namespace std
+#endif // STRING_UTIL_H
-
-#endif // UTIL_STRING_H