输出测试，RenderableString基本完成

Chars.h

@@ -0,0 +1,71 @@
+//
+// Created by EmsiaetKadosh on 25-1-17.
+//
+
+#pragma once
+
+#include "def.h"
+
+[[nodiscard]] inline unsigned int wtouib16(const wchar* string) noexcept {
+	unsigned int ret = 0;
+	while (*string != L'\0') {
+		if (ret & 0xf0000000) return 0xffffffff;
+		if (*string >= L'0' && *string <= L'9') {
+			ret <<= 4;
+			ret += *string - L'0';
+		} else if (*string >= L'A' && *string <= L'F') {
+			ret <<= 4;
+			ret += *string - 0x41; // L'A' - 10
+		} else if (*string >= L'a' && *string <= L'f') {
+			ret <<= 4;
+			ret += *string - 0x61; // L'a' - 10
+		} else return 0xffffffff;
+		++string;
+	}
+	return ret;
+}
+
+[[nodiscard]] inline unsigned int wtouib16(const wchar* const string, const unsigned long long length) noexcept {
+	unsigned int ret = 0;
+	unsigned long long i = 0;
+	while (i < length) {
+		if (ret & 0xf0000000) return 0xffffffff;
+		if (string[i] >= L'0' && string[i] <= L'9') {
+			ret <<= 4;
+			ret += string[i] - L'0';
+		} else if (string[i] >= L'A' && string[i] <= L'F') {
+			ret <<= 4;
+			ret += string[i] - 0x41; // L'A' - 10
+		} else if (string[i] >= L'a' && string[i] <= L'f') {
+			ret <<= 4;
+			ret += string[i] - 0x61; // L'a' - 10
+		} else return 0xffffffff;
+		++i;
+	}
+	return ret;
+}
+
+/**
+ * 将数字转换为字符串
+ * @param value 要转换的数字
+ * @param fills 填充位数。返回的字符串长度一定不小于该值
+ * @return String类型
+ */
+[[nodiscard]] inline String uitowb16(unsigned int value, const unsigned int fills = 1) noexcept {
+	static constexpr const wchar* const table = L"0123456789ABCDEF";
+	String ret;
+	if (value < static_cast<unsigned int>(1) << fills - 1) {
+		ret.assign(fills, L'0');
+		for (unsigned int i = fills - 1; i != 0; --i) {
+			ret[i] = table[value & 0xf];
+			value >>= 4;
+		}
+	}
+	else {
+		while (value) {
+			ret.push_back(table[value & 0xf]);
+			value >>= 4;
+		}
+	}
+	return ret;
+}