feat: 添加插件 crypter (#1191)

plugin/crypter/hou.go

@@ -0,0 +1,87 @@
+// Package crypter 齁语加解密
+package crypter
+
+import (
+	"strings"
+)
+
+// 齁语密码表
+var houCodebook = []string{
+	"齁", "哦", "噢", "喔", "咕", "咿", "嗯", "啊", 
+	"～", "哈", "！", "唔", "哼", "❤", "呃", "呼",
+}
+// 索引:  0    1    2    3    4    5    6    7
+//       8    9   10   11   12   13   14   15
+
+// 创建映射表
+var houCodebookMap = make(map[string]int)
+
+// 初始化映射表
+func init() {
+	for idx, ch := range houCodebook {
+		houCodebookMap[ch] = idx
+	}
+}
+
+func encodeHou(text string) string {
+	if text == "" {
+		return "请输入要加密的文本"
+	}
+	var encoded strings.Builder
+	textBytes := []byte(text)
+	for _, b := range textBytes {
+		high := (b >> 4) & 0x0F
+		low := b & 0x0F
+		encoded.WriteString(houCodebook[high])
+		encoded.WriteString(houCodebook[low])
+	}
+	
+	return encoded.String()
+}
+
+func decodeHou(code string) string {
+	if code == "" {
+		return "请输入要解密的齁语密文"
+	}
+
+	// 过滤出有效的齁语字符
+	var validChars []string
+	for _, r := range code {
+		charStr := string(r)
+		if _, exists := houCodebookMap[charStr]; exists {
+			validChars = append(validChars, charStr)
+		}
+	}
+	
+	if len(validChars)%2 != 0 {
+		return "齁语密文长度错误，无法解密"
+	}
+	
+	// 解密过程
+	var byteList []byte
+	for i := 0; i < len(validChars); i += 2 {
+		highIdx, highExists := houCodebookMap[validChars[i]]
+		lowIdx, lowExists := houCodebookMap[validChars[i+1]]
+		
+		if !highExists || !lowExists {
+			return "齁语密文包含无效字符"
+		}
+		
+		originalByte := byte((highIdx << 4) | lowIdx)
+		byteList = append(byteList, originalByte)
+	}
+	
+	result := string(byteList)
+	
+	if !isValidUTF8(result) {
+		return "齁语解密失败，结果不是有效的文本"
+	}
+	
+	return result
+}
+
+// 检查字符串是否为有效的UTF-8编码
+func isValidUTF8(s string) bool {
+	// Go的string类型默认就是UTF-8，如果转换没有出错说明是有效的
+	return len(s) > 0 || s == ""
+}