535 lines
22 KiB
Objective-C
535 lines
22 KiB
Objective-C
//
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// KBSuggestionEngine.m
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// CustomKeyboard
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//
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#import "KBSuggestionEngine.h"
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#import "KBConfig.h"
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@interface KBSuggestionEngine ()
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@property (nonatomic, copy) NSArray<NSString *> *words;
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@property (nonatomic, strong) NSMutableDictionary<NSString *, NSNumber *> *selectionCounts;
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@property (nonatomic, strong) NSSet<NSString *> *priorityWords;
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@property (nonatomic, copy) NSArray<NSString *> *traditionalChineseWords;
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@property (nonatomic, copy) NSArray<NSString *> *simplifiedChineseWords;
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@property (nonatomic, strong) NSDictionary<NSString *, NSArray<NSString *> *> *pinyinToTraditionalMap;
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@property (nonatomic, strong) NSDictionary<NSString *, NSArray<NSString *> *> *bopomofoToChineseMap;
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@end
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@implementation KBSuggestionEngine
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+ (instancetype)shared {
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static KBSuggestionEngine *engine;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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engine = [[KBSuggestionEngine alloc] init];
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});
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return engine;
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}
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- (instancetype)init {
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if (self = [super init]) {
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_engineType = KBSuggestionEngineTypeLatin;
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_selectionCounts = [NSMutableDictionary dictionary];
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NSArray<NSString *> *defaults = [self.class kb_defaultWords];
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_priorityWords = [NSSet setWithArray:defaults];
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_words = [self kb_loadWords];
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_traditionalChineseWords = [self kb_loadTraditionalChineseWords];
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_simplifiedChineseWords = [self kb_loadSimplifiedChineseWords];
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_pinyinToTraditionalMap = [self kb_loadPinyinToTraditionalMap];
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_bopomofoToChineseMap = [self kb_loadBopomofoToChineseMap];
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}
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return self;
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}
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- (NSArray<NSString *> *)suggestionsForPrefix:(NSString *)prefix limit:(NSUInteger)limit {
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if (prefix.length == 0 || limit == 0) { return @[]; }
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// 根据引擎类型选择不同的联想逻辑
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switch (self.engineType) {
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case KBSuggestionEngineTypePinyinTraditional:
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return [self kb_traditionalPinyinSuggestionsForPrefix:prefix limit:limit];
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case KBSuggestionEngineTypePinyinSimplified:
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return [self kb_simplifiedPinyinSuggestionsForPrefix:prefix limit:limit];
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case KBSuggestionEngineTypeBopomofo:
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return [self kb_bopomofoSuggestionsForPrefix:prefix limit:limit];
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case KBSuggestionEngineTypeLatin:
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default:
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return [self kb_latinSuggestionsForPrefix:prefix limit:limit];
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}
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}
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- (void)recordSelection:(NSString *)word {
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if (word.length == 0) { return; }
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NSString *key = word.lowercaseString;
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NSInteger count = self.selectionCounts[key].integerValue + 1;
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self.selectionCounts[key] = @(count);
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}
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#pragma mark - Defaults
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- (NSArray<NSString *> *)kb_loadWords {
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NSMutableOrderedSet<NSString *> *set = [[NSMutableOrderedSet alloc] init];
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[set addObjectsFromArray:[self.class kb_defaultWords]];
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NSArray<NSString *> *paths = [self kb_wordListPaths];
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for (NSString *path in paths) {
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if (path.length == 0) { continue; }
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NSString *content = [NSString stringWithContentsOfFile:path encoding:NSUTF8StringEncoding error:nil];
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if (content.length == 0) { continue; }
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NSArray<NSString *> *lines = [content componentsSeparatedByCharactersInSet:[NSCharacterSet newlineCharacterSet]];
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for (NSString *line in lines) {
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NSString *word = [self kb_sanitizedWordFromLine:line];
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if (word.length == 0) { continue; }
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[set addObject:word];
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}
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}
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NSArray<NSString *> *result = set.array ?: @[];
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return result;
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}
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- (NSArray<NSString *> *)kb_wordListPaths {
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NSMutableArray<NSString *> *paths = [NSMutableArray array];
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// 1) App Group override (allows server-downloaded large list).
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NSURL *containerURL = [[NSFileManager defaultManager] containerURLForSecurityApplicationGroupIdentifier:AppGroup];
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if (containerURL.path.length > 0) {
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NSString *groupPath = [[containerURL path] stringByAppendingPathComponent:@"kb_words.txt"];
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[paths addObject:groupPath];
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}
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// 2) Bundle fallback.
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NSString *bundlePath = [[NSBundle mainBundle] pathForResource:@"kb_words" ofType:@"txt"];
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if (bundlePath.length > 0) {
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[paths addObject:bundlePath];
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}
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return paths;
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}
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- (NSString *)kb_sanitizedWordFromLine:(NSString *)line {
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NSString *trimmed = [[line stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceAndNewlineCharacterSet]] lowercaseString];
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if (trimmed.length == 0) { return @""; }
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static NSCharacterSet *letters = nil;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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letters = [NSCharacterSet characterSetWithCharactersInString:@"abcdefghijklmnopqrstuvwxyz"];
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});
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for (NSUInteger i = 0; i < trimmed.length; i++) {
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if (![letters characterIsMember:[trimmed characterAtIndex:i]]) {
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return @"";
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}
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}
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return trimmed;
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}
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+ (NSArray<NSString *> *)kb_defaultWords {
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return @[
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@"a", @"an", @"and", @"are", @"as", @"at",
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@"app", @"ap", @"apple", @"apply", @"april", @"application",
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@"about", @"above", @"after", @"again", @"against", @"all",
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@"am", @"among", @"amount", @"any", @"around",
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@"be", @"because", @"been", @"before", @"being", @"below",
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@"best", @"between", @"both", @"but", @"by",
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@"can", @"could", @"come", @"common", @"case",
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@"do", @"does", @"down", @"day",
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@"each", @"early", @"end", @"even", @"every",
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@"for", @"from", @"first", @"found", @"free",
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@"get", @"good", @"great", @"go",
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@"have", @"has", @"had", @"help", @"how",
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@"in", @"is", @"it", @"if", @"into",
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@"just", @"keep", @"kind", @"know",
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@"like", @"look", @"long", @"last",
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@"make", @"more", @"most", @"my",
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@"new", @"no", @"not", @"now",
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@"of", @"on", @"one", @"or", @"other", @"our", @"out",
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@"people", @"place", @"please",
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@"quick", @"quite",
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@"right", @"read", @"real",
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@"see", @"say", @"some", @"such", @"so",
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@"the", @"to", @"this", @"that", @"them", @"then", @"there", @"they", @"these", @"time",
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@"use", @"up", @"under",
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@"very",
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@"we", @"with", @"what", @"when", @"where", @"who", @"why", @"will", @"would",
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@"you", @"your"
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];
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}
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#pragma mark - Engine Type Management
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- (void)setEngineTypeFromString:(NSString *)engineTypeString {
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if ([engineTypeString isEqualToString:@"latin"]) {
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self.engineType = KBSuggestionEngineTypeLatin;
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} else if ([engineTypeString isEqualToString:@"pinyin_traditional"]) {
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self.engineType = KBSuggestionEngineTypePinyinTraditional;
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} else if ([engineTypeString isEqualToString:@"pinyin_simplified"]) {
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self.engineType = KBSuggestionEngineTypePinyinSimplified;
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} else if ([engineTypeString isEqualToString:@"bopomofo"]) {
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self.engineType = KBSuggestionEngineTypeBopomofo;
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} else {
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self.engineType = KBSuggestionEngineTypeLatin;
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}
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NSLog(@"[KBSuggestionEngine] Engine type set to: %@", engineTypeString);
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}
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#pragma mark - Latin Suggestions
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- (NSArray<NSString *> *)kb_latinSuggestionsForPrefix:(NSString *)prefix limit:(NSUInteger)limit {
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NSString *lower = prefix.lowercaseString;
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NSMutableArray<NSString *> *matches = [NSMutableArray array];
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for (NSString *word in self.words) {
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if ([word hasPrefix:lower]) {
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[matches addObject:word];
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if (matches.count >= limit * 3) {
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break;
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}
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}
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}
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if (matches.count == 0) { return @[]; }
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[matches sortUsingComparator:^NSComparisonResult(NSString *a, NSString *b) {
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NSInteger ca = self.selectionCounts[a].integerValue;
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NSInteger cb = self.selectionCounts[b].integerValue;
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if (ca != cb) {
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return (cb > ca) ? NSOrderedAscending : NSOrderedDescending;
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}
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BOOL pa = [self.priorityWords containsObject:a];
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BOOL pb = [self.priorityWords containsObject:b];
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if (pa != pb) {
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return pa ? NSOrderedAscending : NSOrderedDescending;
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}
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return [a compare:b];
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}];
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if (matches.count > limit) {
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return [matches subarrayWithRange:NSMakeRange(0, limit)];
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}
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return matches.copy;
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}
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#pragma mark - Traditional Chinese Pinyin Suggestions
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- (NSArray<NSString *> *)kb_traditionalPinyinSuggestionsForPrefix:(NSString *)prefix limit:(NSUInteger)limit {
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NSString *lower = prefix.lowercaseString;
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NSMutableArray<NSString *> *matches = [NSMutableArray array];
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NSArray<NSString *> *directMatches = self.pinyinToTraditionalMap[lower];
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if (directMatches.count > 0) {
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[matches addObjectsFromArray:directMatches];
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}
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for (NSString *key in self.pinyinToTraditionalMap) {
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if ([key hasPrefix:lower] && ![key isEqualToString:lower]) {
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NSArray<NSString *> *candidates = self.pinyinToTraditionalMap[key];
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[matches addObjectsFromArray:candidates];
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if (matches.count >= limit * 2) {
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break;
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}
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}
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}
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if (matches.count == 0) {
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return [self kb_fallbackTraditionalSuggestions:lower limit:limit];
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}
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[matches sortUsingComparator:^NSComparisonResult(NSString *a, NSString *b) {
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NSInteger ca = self.selectionCounts[a].integerValue;
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NSInteger cb = self.selectionCounts[b].integerValue;
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if (ca != cb) {
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return (cb > ca) ? NSOrderedAscending : NSOrderedDescending;
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}
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return [a compare:b];
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}];
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if (matches.count > limit) {
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return [matches subarrayWithRange:NSMakeRange(0, limit)];
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}
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return matches.copy;
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}
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- (NSArray<NSString *> *)kb_fallbackTraditionalSuggestions:(NSString *)prefix limit:(NSUInteger)limit {
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NSMutableArray<NSString *> *matches = [NSMutableArray array];
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for (NSString *word in self.traditionalChineseWords) {
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[matches addObject:word];
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if (matches.count >= limit) {
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break;
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}
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}
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return matches.copy;
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}
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#pragma mark - Simplified Chinese Pinyin Suggestions
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- (NSArray<NSString *> *)kb_simplifiedPinyinSuggestionsForPrefix:(NSString *)prefix limit:(NSUInteger)limit {
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NSString *lower = prefix.lowercaseString;
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NSMutableArray<NSString *> *matches = [NSMutableArray array];
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NSArray<NSString *> *directMatches = self.pinyinToTraditionalMap[lower];
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if (directMatches.count > 0) {
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for (NSString *tradChar in directMatches) {
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NSString *simplified = [self kb_toSimplified:tradChar];
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if (simplified.length > 0) {
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[matches addObject:simplified];
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}
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}
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}
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for (NSString *key in self.pinyinToTraditionalMap) {
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if ([key hasPrefix:lower] && ![key isEqualToString:lower]) {
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NSArray<NSString *> *candidates = self.pinyinToTraditionalMap[key];
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for (NSString *tradChar in candidates) {
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NSString *simplified = [self kb_toSimplified:tradChar];
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if (simplified.length > 0) {
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[matches addObject:simplified];
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}
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}
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if (matches.count >= limit * 2) {
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break;
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}
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}
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}
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if (matches.count == 0) {
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return [self kb_fallbackSimplifiedSuggestions:lower limit:limit];
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}
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[matches sortUsingComparator:^NSComparisonResult(NSString *a, NSString *b) {
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NSInteger ca = self.selectionCounts[a].integerValue;
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NSInteger cb = self.selectionCounts[b].integerValue;
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if (ca != cb) {
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return (cb > ca) ? NSOrderedAscending : NSOrderedDescending;
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}
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return [a compare:b];
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}];
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if (matches.count > limit) {
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return [matches subarrayWithRange:NSMakeRange(0, limit)];
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}
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return matches.copy;
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}
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- (NSArray<NSString *> *)kb_fallbackSimplifiedSuggestions:(NSString *)prefix limit:(NSUInteger)limit {
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NSMutableArray<NSString *> *matches = [NSMutableArray array];
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for (NSString *word in self.simplifiedChineseWords) {
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[matches addObject:word];
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if (matches.count >= limit) {
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break;
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}
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}
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return matches.copy;
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}
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- (NSString *)kb_toSimplified:(NSString *)traditional {
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static NSDictionary<NSString *, NSString *> *tradToSimpMap = nil;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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tradToSimpMap = @{
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@"臺": @"台", @"臺": @"台", @"灣": @"湾", @"語": @"语", @"體": @"体",
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@"國": @"国", @"學": @"学", @"時": @"时", @"問": @"问", @"見": @"见",
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@"經": @"经", @"動": @"动", @"長": @"长", @"開": @"开", @"關": @"关",
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@"無": @"无", @"說": @"说", @"書": @"书", @"電": @"电", @"機": @"机",
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@"氣": @"气", @"這": @"这", @"們": @"们", @"個": @"个", @"對": @"对",
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@"來": @"来", @"還": @"还", @"過": @"过", @"會": @"会", @"進": @"进",
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@"開": @"开", @"頭": @"头", @"點": @"点", @"問": @"问", @"題": @"题",
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@"變": @"变", @"條": @"条", @"東": @"东", @"車": @"车", @"錢": @"钱",
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@"門": @"门", @"聽": @"听", @"聲": @"声", @"醫": @"医", @"讓": @"让",
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@"識": @"识", @"務": @"务", @"農": @"农", @"業": @"业", @"產": @"产",
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@"黨": @"党", @"歷": @"历", @"史": @"史", @"後": @"后", @"前": @"前",
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@"強": @"强", @"當": @"当", @"應": @"应", @"從": @"从", @"優": @"优",
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@"兒": @"儿", @"兩": @"两", @"幾": @"几", @"廣": @"广", @"場": @"场",
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@"決": @"决", @"許": @"许", @"設": @"设", @"請": @"请", @"論": @"论",
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@"認": @"认", @"斷": @"断", @"離": @"离", @"須": @"须", @"導": @"导",
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@"爭": @"争", @"重": @"重", @"輕": @"轻", @"難": @"难", @"極": @"极",
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@"據": @"据", @"實": @"实", @"際": @"际", @"標": @"标", @"準": @"准",
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@"確": @"确", @"證": @"证", @"驗": @"验", @"權": @"权", @"規": @"规",
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@"則": @"则", @"劃": @"划", @"計": @"计", @"劃": @"划", @"術": @"术",
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@"藝": @"艺", @"術": @"术", @"選": @"选", @"舉": @"举", @"團": @"团",
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@"結": @"结", @"組": @"组", @"織": @"织", @"義": @"义", @"務": @"务",
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@"親": @"亲", @"愛": @"爱", @"情": @"情", @"懷": @"怀", @"家": @"家",
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@"屬": @"属", @"幫": @"帮", @"助": @"助", @"友": @"友", @"誼": @"谊",
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@"謝": @"谢", @"謝": @"谢", @"對": @"对", @"起": @"起", @"早": @"早",
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@"安": @"安", @"晚": @"晚", @"請": @"请", @"問": @"问", @"沒": @"没",
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@"關": @"关", @"係": @"系", @"加": @"加", @"油": @"油", @"台": @"台",
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@"北": @"北", @"高": @"高", @"雄": @"雄", @"中": @"中", @"南": @"南",
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@"朋": @"朋", @"友": @"友", @"人": @"人", @"工": @"工", @"作": @"作",
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@"習": @"习", @"生": @"生", @"活": @"活", @"地": @"地", @"方": @"方",
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@"法": @"法", @"答": @"答", @"喜": @"喜", @"歡": @"欢", @"想": @"想",
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@"念": @"念", @"開": @"开", @"心": @"心", @"快": @"快", @"樂": @"乐",
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@"美": @"美", @"麗": @"丽", @"漂": @"漂", @"亮": @"亮", @"帥": @"帅",
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@"氣": @"气", @"可": @"可", @"愛": @"爱", @"溫": @"温", @"柔": @"柔"
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};
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});
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if (tradToSimpMap[traditional]) {
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return tradToSimpMap[traditional];
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}
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NSMutableString *result = [traditional mutableCopy];
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[tradToSimpMap enumerateKeysAndObjectsUsingBlock:^(NSString *trad, NSString *simp, BOOL *stop) {
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[result replaceOccurrencesOfString:trad withString:simp options:0 range:NSMakeRange(0, result.length)];
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}];
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return result.length > 0 ? [result copy] : traditional;
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}
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#pragma mark - Bopomofo (Zhuyin) Suggestions
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- (NSArray<NSString *> *)kb_bopomofoSuggestionsForPrefix:(NSString *)prefix limit:(NSUInteger)limit {
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NSMutableArray<NSString *> *matches = [NSMutableArray array];
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NSArray<NSString *> *directMatches = self.bopomofoToChineseMap[prefix];
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if (directMatches.count > 0) {
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[matches addObjectsFromArray:directMatches];
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}
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for (NSString *key in self.bopomofoToChineseMap) {
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if ([key hasPrefix:prefix] && ![key isEqualToString:prefix]) {
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NSArray<NSString *> *candidates = self.bopomofoToChineseMap[key];
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[matches addObjectsFromArray:candidates];
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if (matches.count >= limit * 2) {
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break;
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}
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}
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}
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if (matches.count == 0) {
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return [self kb_fallbackTraditionalSuggestions:prefix limit:limit];
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}
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[matches sortUsingComparator:^NSComparisonResult(NSString *a, NSString *b) {
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NSInteger ca = self.selectionCounts[a].integerValue;
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NSInteger cb = self.selectionCounts[b].integerValue;
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if (ca != cb) {
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return (cb > ca) ? NSOrderedAscending : NSOrderedDescending;
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}
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return [a compare:b];
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}];
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if (matches.count > limit) {
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return [matches subarrayWithRange:NSMakeRange(0, limit)];
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}
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return matches.copy;
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}
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#pragma mark - Chinese Word Loading
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- (NSArray<NSString *> *)kb_loadTraditionalChineseWords {
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// 加载繁体中文常用词
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// 这里先返回一些示例词，实际应该从文件或数据库加载
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return @[
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@"你好", @"謝謝", @"對不起", @"再見", @"早安",
|
|
@"晚安", @"請問", @"不好意思", @"沒關係", @"加油",
|
|
@"台灣", @"台北", @"高雄", @"台中", @"台南",
|
|
@"朋友", @"家人", @"工作", @"學習", @"生活",
|
|
@"時間", @"地點", @"方法", @"問題", @"答案",
|
|
@"喜歡", @"愛", @"想念", @"開心", @"快樂",
|
|
@"美麗", @"漂亮", @"帥氣", @"可愛", @"溫柔"
|
|
];
|
|
}
|
|
|
|
- (NSArray<NSString *> *)kb_loadSimplifiedChineseWords {
|
|
return @[
|
|
@"你好", @"谢谢", @"对不起", @"再见", @"早安",
|
|
@"晚安", @"请问", @"不好意思", @"没关系", @"加油",
|
|
@"中国", @"北京", @"上海", @"广州", @"深圳",
|
|
@"朋友", @"家人", @"工作", @"学习", @"生活",
|
|
@"时间", @"地点", @"方法", @"问题", @"答案",
|
|
@"喜欢", @"爱", @"想念", @"开心", @"快乐",
|
|
@"美丽", @"漂亮", @"帅气", @"可爱", @"温柔"
|
|
];
|
|
}
|
|
|
|
#pragma mark - Pinyin & Bopomofo Map Loading
|
|
|
|
- (NSDictionary<NSString *, NSArray<NSString *> *> *)kb_loadPinyinToTraditionalMap {
|
|
NSString *path = [[NSBundle mainBundle] pathForResource:@"pinyin_to_traditional" ofType:@"json"];
|
|
if (!path) {
|
|
NSLog(@"[KBSuggestionEngine] pinyin_to_traditional.json not found, using empty map");
|
|
return @{};
|
|
}
|
|
|
|
NSData *data = [NSData dataWithContentsOfFile:path];
|
|
if (!data) {
|
|
NSLog(@"[KBSuggestionEngine] Failed to read pinyin_to_traditional.json");
|
|
return @{};
|
|
}
|
|
|
|
NSError *error = nil;
|
|
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error];
|
|
if (error || ![json isKindOfClass:NSDictionary.class]) {
|
|
NSLog(@"[KBSuggestionEngine] Failed to parse pinyin_to_traditional.json: %@", error);
|
|
return @{};
|
|
}
|
|
|
|
NSDictionary *mappings = json[@"mappings"];
|
|
if (![mappings isKindOfClass:NSDictionary.class]) {
|
|
NSLog(@"[KBSuggestionEngine] Invalid mappings in pinyin_to_traditional.json");
|
|
return @{};
|
|
}
|
|
|
|
NSMutableDictionary<NSString *, NSArray<NSString *> *> *result = [NSMutableDictionary dictionary];
|
|
[mappings enumerateKeysAndObjectsUsingBlock:^(NSString *key, id obj, BOOL *stop) {
|
|
if ([obj isKindOfClass:NSArray.class]) {
|
|
NSMutableArray<NSString *> *chars = [NSMutableArray array];
|
|
for (id item in (NSArray *)obj) {
|
|
if ([item isKindOfClass:NSString.class]) {
|
|
[chars addObject:item];
|
|
}
|
|
}
|
|
if (chars.count > 0) {
|
|
result[key] = [chars copy];
|
|
}
|
|
}
|
|
}];
|
|
|
|
NSLog(@"[KBSuggestionEngine] Loaded %lu pinyin mappings", (unsigned long)result.count);
|
|
return [result copy];
|
|
}
|
|
|
|
- (NSDictionary<NSString *, NSArray<NSString *> *> *)kb_loadBopomofoToChineseMap {
|
|
NSString *path = [[NSBundle mainBundle] pathForResource:@"bopomofo_to_chinese" ofType:@"json"];
|
|
if (!path) {
|
|
NSLog(@"[KBSuggestionEngine] bopomofo_to_chinese.json not found, using empty map");
|
|
return @{};
|
|
}
|
|
|
|
NSData *data = [NSData dataWithContentsOfFile:path];
|
|
if (!data) {
|
|
NSLog(@"[KBSuggestionEngine] Failed to read bopomofo_to_chinese.json");
|
|
return @{};
|
|
}
|
|
|
|
NSError *error = nil;
|
|
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:data options:0 error:&error];
|
|
if (error || ![json isKindOfClass:NSDictionary.class]) {
|
|
NSLog(@"[KBSuggestionEngine] Failed to parse bopomofo_to_chinese.json: %@", error);
|
|
return @{};
|
|
}
|
|
|
|
NSDictionary *mappings = json[@"mappings"];
|
|
if (![mappings isKindOfClass:NSDictionary.class]) {
|
|
NSLog(@"[KBSuggestionEngine] Invalid mappings in bopomofo_to_chinese.json");
|
|
return @{};
|
|
}
|
|
|
|
NSMutableDictionary<NSString *, NSArray<NSString *> *> *result = [NSMutableDictionary dictionary];
|
|
[mappings enumerateKeysAndObjectsUsingBlock:^(NSString *key, id obj, BOOL *stop) {
|
|
if ([obj isKindOfClass:NSArray.class]) {
|
|
NSMutableArray<NSString *> *chars = [NSMutableArray array];
|
|
for (id item in (NSArray *)obj) {
|
|
if ([item isKindOfClass:NSString.class]) {
|
|
[chars addObject:item];
|
|
}
|
|
}
|
|
if (chars.count > 0) {
|
|
result[key] = [chars copy];
|
|
}
|
|
}
|
|
}];
|
|
|
|
NSLog(@"[KBSuggestionEngine] Loaded %lu bopomofo mappings", (unsigned long)result.count);
|
|
return [result copy];
|
|
}
|
|
|
|
@end
|