Initial commit

AIGrammar/lib/CommFunc.swift

@@ -6,3 +6,55 @@
 //
 
 import Foundation
+
+class CommonFunc {
+    static let shared = CommonFunc()
+    private let profanityList: [String] = ["fuck", "shit", "porn", "习近平", "鸡巴", "阴茎"] // Example profanity words
+
+    private init() {} // Private initializer to ensure singleton usage
+
+    func validateInputEng(input: String, isSingleWord: Bool = false) -> (isValid: Bool, message: String) {
+        // Check for profanity
+        for badWord in profanityList {
+            if input.lowercased().contains(badWord) {
+                return (false, globalEnvironment.DirtyInputErrToast)
+            }
+        }
+        
+        // Check characters based on the isSingleWord flag
+        let pattern = isSingleWord ? "^[A-Za-z]+$" : "^[A-Za-z0-9 .,;:!?'\"@-]+$"
+        let regex = try! NSRegularExpression(pattern: pattern)
+        let range = NSRange(location: 0, length: input.utf16.count)
+
+        if regex.firstMatch(in: input, options: [], range: range) == nil {
+            let characterSet = isSingleWord ? "english letters" : "english letters, numbers, and punctuation"
+            return (false, "Input should only contain \(characterSet).")
+        }
+        
+        return (true, "Input is valid.")
+    }
+    
+    func validateChineseInput(input: String) -> (isValid: Bool, message: String) {
+        // Check for profanity
+        for word in profanityList {
+            if input.contains(word) {
+                return (false, globalEnvironment.DirtyInputErrToast)
+            }
+        }
+
+        // Check if all characters are valid Chinese characters or punctuation
+        for character in input {
+            if !character.isPunctuation && !(0x4E00...0x9FFF).contains(character.unicodeScalars.first!.value) &&
+                !(0x3400...0x4DBF).contains(character.unicodeScalars.first!.value) &&
+                !(0x20000...0x2A6DF).contains(character.unicodeScalars.first!.value) {
+                // 既不是中文，又不是英文，返回错误
+                let res = self.validateInputEng(input: input)
+                if !res.isValid{
+                    return (false, "Input contains invalid characters.")
+                }
+            }
+        }
+        return (true, "Input is valid.")
+    }
+        
+}