52 lines
2.2 KiB
Objective-C
52 lines
2.2 KiB
Objective-C
//
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// KBStreamFetcher.h
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// CustomKeyboard
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//
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// 轻量网络流拉取器:支持纯文本分块与 SSE(text/event-stream) 两种形式的“边下边显”。
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// - 增量解码:按 UTF-8 安全前缀逐步转成字符串,避免半个多字节字符导致阻塞/乱码
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// - SSE 解析:按 \n\n 切事件,合并 data: 行,移除前缀,仅回传正文
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// - 兼容后端“/t”作为分段标记:可自动替换为制表符“\t”
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// - 首段去首个“\t”:若首次正文以一个制表符起始(允许前导空白),可只移除“一个”\t
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//
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#import <Foundation/Foundation.h>
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NS_ASSUME_NONNULL_BEGIN
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typedef void (^KBStreamFetcherChunkHandler)(NSString *chunk);
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typedef void (^KBStreamFetcherFinishHandler)(NSError *_Nullable error);
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@interface KBStreamFetcher : NSObject <NSURLSessionDataDelegate>
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// 便利构造
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+ (instancetype)fetcherWithURL:(NSURL *)url;
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// 必填:请求地址
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@property (nonatomic, strong) NSURL *url;
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// 可选 Header
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@property (nonatomic, copy, nullable) NSDictionary<NSString *, NSString *> *extraHeaders;
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// 配置项(默认值见注释)
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@property (nonatomic, assign) BOOL acceptEventStream; // 默认 NO;置 YES 时发送 Accept: text/event-stream
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@property (nonatomic, assign) BOOL disableCompression; // 默认 YES;发送 Accept-Encoding: identity
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@property (nonatomic, assign) BOOL treatSlashTAsTab; // 默认 YES;将“/t”替换为“\t”
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@property (nonatomic, assign) BOOL trimLeadingTabOnce; // 默认 YES;首次正文起始的“\t”删一个(忽略前导空白)
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@property (nonatomic, assign) NSTimeInterval requestTimeout; // 默认 30s
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/// UI 刷新节奏:当一次回调内解析出多段(如多条 SSE 事件)时,按该间隔逐条回调(默认 0.10s)。
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@property (nonatomic, assign) NSTimeInterval flushInterval;
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/// 非 SSE 且一次性拿到大段文本时,是否按空格切词逐条回调(模拟“逐词流式”),默认 YES。
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@property (nonatomic, assign) BOOL splitLargeDeltasOnWhitespace;
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// 回调(统一在主线程触发)
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@property (nonatomic, copy, nullable) KBStreamFetcherChunkHandler onChunk;
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@property (nonatomic, copy, nullable) KBStreamFetcherFinishHandler onFinish;
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// 控制
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- (void)start;
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- (void)cancel;
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@end
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NS_ASSUME_NONNULL_END
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