添加联想词库

CustomKeyboard/Manager/KBSuggestionEngine.h

@@ -8,7 +8,8 @@
 NS_ASSUME_NONNULL_BEGIN
 
 typedef NS_ENUM(NSInteger, KBSuggestionEngineType) {
-    KBSuggestionEngineTypeLatin = 0,              // 拉丁字母（英语）
+    KBSuggestionEngineTypeLatin = 0,              // 拉丁字母（兼容旧值）
+    KBSuggestionEngineTypeEnglish,                // 英语
     KBSuggestionEngineTypeSpanish,                // 西班牙语
     KBSuggestionEngineTypePortuguese,             // 葡萄牙语
     KBSuggestionEngineTypeIndonesian,             // 印度尼西亚语

CustomKeyboard/Manager/KBSuggestionEngine.m

@@ -15,6 +15,7 @@
 @property (nonatomic, strong) NSDictionary<NSString *, NSArray<NSString *> *> *pinyinToTraditionalMap;
 @property (nonatomic, strong) NSDictionary<NSString *, NSArray<NSString *> *> *bopomofoToChineseMap;
 @property (nonatomic, copy) NSArray<NSString *> *spanishWords;
+@property (nonatomic, copy) NSArray<NSString *> *englishWords;
 @property (nonatomic, copy) NSArray<NSString *> *portugueseWords;
 @property (nonatomic, copy) NSArray<NSString *> *indonesianWords;
 @end
@@ -42,6 +43,7 @@
         _pinyinToTraditionalMap = [self kb_loadPinyinToTraditionalMap];
         _bopomofoToChineseMap = [self kb_loadBopomofoToChineseMap];
         _spanishWords = [self kb_loadSpanishWords];
+        _englishWords = [self kb_loadEnglishWords];
         _portugueseWords = [self kb_loadPortugueseWords];
         _indonesianWords = [self kb_loadIndonesianWords];
     }
@@ -52,6 +54,8 @@
     if (prefix.length == 0 || limit == 0) { return @[]; }
 
     switch (self.engineType) {
+        case KBSuggestionEngineTypeEnglish:
+            return [self kb_englishSuggestionsForPrefix:prefix limit:limit];
         case KBSuggestionEngineTypeSpanish:
             return [self kb_spanishSuggestionsForPrefix:prefix limit:limit];
         case KBSuggestionEngineTypePortuguese:
@@ -171,6 +175,8 @@
         self.engineType = KBSuggestionEngineTypeLatin;
     } else if ([engineTypeString isEqualToString:@"spanish"]) {
         self.engineType = KBSuggestionEngineTypeSpanish;
+    } else if ([engineTypeString isEqualToString:@"english"]) {
+        self.engineType = KBSuggestionEngineTypeEnglish;
     } else if ([engineTypeString isEqualToString:@"portuguese"]) {
         self.engineType = KBSuggestionEngineTypePortuguese;
     } else if ([engineTypeString isEqualToString:@"indonesian"]) {
@@ -187,6 +193,55 @@
     NSLog(@"[KBSuggestionEngine] Engine type set to: %@", engineTypeString);
 }
 
+#pragma mark - English Suggestions
+
+- (NSArray<NSString *> *)kb_englishSuggestionsForPrefix:(NSString *)prefix limit:(NSUInteger)limit {
+    NSArray<NSString *> *matches = [self kb_suggestionsFromWordList:self.englishWords
+                                                            prefix:prefix
+                                                             limit:limit];
+    if (matches.count == 0) {
+        return [self kb_latinSuggestionsForPrefix:prefix limit:limit];
+    }
+    return matches;
+}
+
+- (NSArray<NSString *> *)kb_loadEnglishWords {
+    NSString *path = [[NSBundle mainBundle] pathForResource:@"english_words" ofType:@"json"];
+    if (!path) {
+        NSLog(@"[KBSuggestionEngine] english_words.json not found, using default words");
+        return [self.class kb_defaultWords];
+    }
+
+    NSData *data = [NSData dataWithContentsOfFile:path];
+    if (!data) {
+        NSLog(@"[KBSuggestionEngine] Failed to read english_words.json");
+        return [self.class kb_defaultWords];
+    }
+
+    NSError *error = nil;
+    NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error];
+    if (error || ![json isKindOfClass:NSDictionary.class]) {
+        NSLog(@"[KBSuggestionEngine] Failed to parse english_words.json: %@", error);
+        return [self.class kb_defaultWords];
+    }
+
+    NSArray *wordsArray = json[@"words"];
+    if (![wordsArray isKindOfClass:NSArray.class]) {
+        NSLog(@"[KBSuggestionEngine] Invalid words array in english_words.json");
+        return [self.class kb_defaultWords];
+    }
+
+    NSMutableArray<NSString *> *result = [NSMutableArray array];
+    for (id item in wordsArray) {
+        if ([item isKindOfClass:NSString.class]) {
+            [result addObject:item];
+        }
+    }
+
+    NSLog(@"[KBSuggestionEngine] Loaded %lu English words", (unsigned long)result.count);
+    return result.count > 0 ? [result copy] : [self.class kb_defaultWords];
+}
+
 #pragma mark - Latin Suggestions
 
 - (NSArray<NSString *> *)kb_latinSuggestionsForPrefix:(NSString *)prefix limit:(NSUInteger)limit {