Update the convienient API using the Category, actually most use case is HTTP request, data and file URL are rare

SDWebImage/Core/SDWebImageDownloaderRequestModifier.h

@@ -40,20 +40,30 @@ typedef NSURLRequest * _Nullable (^SDWebImageDownloaderRequestModifierBlock)(NSU
 @end
 
 /**
- A convenient request modifier to provide the HTTP request including HTTP method, headers and body.
- */
-@interface SDWebImageDownloaderHTTPRequestModifier : NSObject <SDWebImageDownloaderRequestModifier>
+A convenient request modifier to provide the HTTP request including HTTP Method, Headers and Body.
+*/
+@interface SDWebImageDownloaderRequestModifier (HTTPConveniences)
 
-/// Create the request modifier with HTTP Headers
+/// Create the request modifier with HTTP Method.
+/// @param method HTTP Method, nil means to GET.
+/// @note This is for convenience, if you need code to control the logic, use block API instead.
+- (nonnull instancetype)initWithMethod:(nullable NSString *)method;
+
+/// Create the request modifier with HTTP Headers.
 /// @param headers HTTP Headers. Case insensitive according to HTTP/1.1(HTTP/2) standard. The headers will overide the same fileds from original request.
-/// @note This is for convenience, if you need code to control the logic, use `SDWebImageDownloaderRequestModifier` instead
+/// @note This is for convenience, if you need code to control the logic, use block API instead.
 - (nonnull instancetype)initWithHeaders:(nullable NSDictionary<NSString *, NSString *> *)headers;
 
-/// Create the request modifier with HTTP Method, Headers and Body
+/// Create the request modifier with HTTP Body.
+/// @param body HTTP Body.
+/// @note This is for convenience, if you need code to control the logic, use block API instead.
+- (nonnull instancetype)initWithBody:(nullable NSData *)body;
+
+/// Create the request modifier with HTTP Method, Headers and Body.
 /// @param method HTTP Method, nil means to GET.
 /// @param headers HTTP Headers. Case insensitive according to HTTP/1.1(HTTP/2) standard. The headers will overide the same fileds from original request.
-/// @param body HTTP Body
-/// @note This is for convenience, if you need code to control the logic, use `SDWebImageDownloaderRequestModifier` instead
+/// @param body HTTP Body.
+/// @note This is for convenience, if you need code to control the logic, use block API instead.
 - (nonnull instancetype)initWithMethod:(nullable NSString *)method headers:(nullable NSDictionary<NSString *, NSString *> *)headers body:(nullable NSData *)body;
 
 @end

SDWebImage/Core/SDWebImageDownloaderRequestModifier.m

@@ -38,39 +38,34 @@
 
 @end
 
-@interface SDWebImageDownloaderHTTPRequestModifier ()
+@implementation SDWebImageDownloaderRequestModifier (HTTPConveniences)
 
-@property (nonatomic, copy, nullable) NSString *method;
-@property (nonatomic, copy, nullable) NSDictionary<NSString *,NSString *> *headers;
-@property (nonatomic, copy, nullable) NSData *body;
-
-@end
-
-@implementation SDWebImageDownloaderHTTPRequestModifier
+- (instancetype)initWithMethod:(NSString *)method {
+    return [self initWithMethod:method headers:nil body:nil];
+}
 
 - (instancetype)initWithHeaders:(NSDictionary<NSString *,NSString *> *)headers {
     return [self initWithMethod:nil headers:headers body:nil];
 }
 
-- (instancetype)initWithMethod:(NSString *)method headers:(NSDictionary<NSString *,NSString *> *)headers body:(NSData *)body {
-    self = [super init];
-    if (self) {
-        _method = [method copy];
-        _headers = [headers copy];
-        _body = [body copy];
-    }
-    return self;
+- (instancetype)initWithBody:(NSData *)body {
+    return [self initWithMethod:nil headers:nil body:body];
 }
 
-- (NSURLRequest *)modifiedRequestWithRequest:(NSURLRequest *)request {
+- (instancetype)initWithMethod:(NSString *)method headers:(NSDictionary<NSString *,NSString *> *)headers body:(NSData *)body {
+    method = [method copy];
+    headers = [headers copy];
+    body = [body copy];
+    return [self initWithBlock:^NSURLRequest * _Nullable(NSURLRequest * _Nonnull request) {
         NSMutableURLRequest *mutableRequest = [request mutableCopy];
-    mutableRequest.HTTPMethod = self.method;
-    mutableRequest.HTTPBody = self.body;
-    for (NSString *header in self.headers) {
-        NSString *value = self.headers[header];
+        mutableRequest.HTTPMethod = method;
+        mutableRequest.HTTPBody = body;
+        for (NSString *header in headers) {
+            NSString *value = headers[header];
             [mutableRequest setValue:value forHTTPHeaderField:header];
         }
         return [mutableRequest copy];
+    }];
 }
 
 @end

SDWebImage/Core/SDWebImageDownloaderResponseModifier.h

@@ -40,20 +40,30 @@ typedef NSURLResponse * _Nullable (^SDWebImageDownloaderResponseModifierBlock)(N
 @end
 
 /**
- A convenient response modifier to provide the HTTP response including HTTP method, headers and body.
- */
-@interface SDWebImageDownloaderHTTPResponseModifier : NSObject <SDWebImageDownloaderResponseModifier>
+A convenient response modifier to provide the HTTP response including HTTP Status Code, Version and Headers.
+*/
+@interface SDWebImageDownloaderResponseModifier (HTTPConveniences)
+
+/// Create the response modifier with HTTP Status code.
+/// @param statusCode HTTP Status Code.
+/// @note This is for convenience, if you need code to control the logic, use block API instead.
+- (nonnull instancetype)initWithStatusCode:(NSInteger)statusCode;
+
+/// Create the response modifier with HTTP Version. Status code defaults to 200.
+/// @param version HTTP Version, nil means "HTTP/1.1".
+/// @note This is for convenience, if you need code to control the logic, use block API instead.
+- (nonnull instancetype)initWithVersion:(nullable NSString *)version;
 
 /// Create the response modifier with HTTP Headers. Status code defaults to 200.
 /// @param headers HTTP Headers. Case insensitive according to HTTP/1.1(HTTP/2) standard. The headers will overide the same fileds from original response.
-/// @note This is for convenience, if you need code to control the logic, use `SDWebImageDownloaderResponseModifier` instead
+/// @note This is for convenience, if you need code to control the logic, use block API instead.
 - (nonnull instancetype)initWithHeaders:(nullable NSDictionary<NSString *, NSString *> *)headers;
 
-/// Create the response modifier with HTTP Version, Status Code and Headers
-/// @param version HTTP Version, nil means "HTTP/1.1"
-/// @param statusCode HTTP Status Code
+/// Create the response modifier with HTTP Status Code, Version and Headers.
+/// @param statusCode HTTP Status Code.
+/// @param version HTTP Version, nil means "HTTP/1.1".
 /// @param headers HTTP Headers. Case insensitive according to HTTP/1.1(HTTP/2) standard. The headers will overide the same fileds from original response.
-/// @note This is for convenience, if you need code to control the logic, use `SDWebImageDownloaderResponseModifier` instead
-- (nonnull instancetype)initWithVersion:(nullable NSString *)version statusCode:(NSInteger)statusCode headers:(nullable NSDictionary<NSString *, NSString *> *)headers;
+/// @note This is for convenience, if you need code to control the logic, use block API instead.
+- (nonnull instancetype)initWithStatusCode:(NSInteger)statusCode version:(nullable NSString *)version headers:(nullable NSDictionary<NSString *, NSString *> *)headers;
 
 @end

SDWebImage/Core/SDWebImageDownloaderResponseModifier.m

@@ -39,41 +39,35 @@
 
 @end
 
-@interface SDWebImageDownloaderHTTPResponseModifier ()
+@implementation SDWebImageDownloaderResponseModifier (HTTPConveniences)
 
-@property (nonatomic, copy, nullable) NSString *version;
-@property (nonatomic) NSInteger statusCode;
-@property (nonatomic, copy, nullable) NSDictionary<NSString *,NSString *> *headers;
+- (instancetype)initWithStatusCode:(NSInteger)statusCode {
+    return [self initWithStatusCode:statusCode version:nil headers:nil];
+}
 
-@end
-
-@implementation SDWebImageDownloaderHTTPResponseModifier
+- (instancetype)initWithVersion:(NSString *)version {
+    return [self initWithStatusCode:200 version:version headers:nil];
+}
 
 - (instancetype)initWithHeaders:(NSDictionary<NSString *,NSString *> *)headers {
-    return [self initWithVersion:nil statusCode:200 headers:headers];
+    return [self initWithStatusCode:200 version:nil headers:headers];
 }
 
-- (instancetype)initWithVersion:(NSString *)version statusCode:(NSInteger)statusCode headers:(NSDictionary<NSString *,NSString *> *)headers {
-    self = [super init];
-    if (self) {
-        _version = [version copy];
-        _statusCode = statusCode;
-        _headers = [headers copy];
-    }
-    return self;
-}
-
-- (NSURLResponse *)modifiedResponseWithResponse:(NSURLResponse *)response {
+- (instancetype)initWithStatusCode:(NSInteger)statusCode version:(NSString *)version headers:(NSDictionary<NSString *,NSString *> *)headers {
+    version = version ? [version copy] : @"HTTP/1.1";
+    headers = [headers copy];
+    return [self initWithBlock:^NSURLResponse * _Nullable(NSURLResponse * _Nonnull response) {
         if (![response isKindOfClass:NSHTTPURLResponse.class]) {
             return response;
         }
         NSMutableDictionary *mutableHeaders = [((NSHTTPURLResponse *)response).allHeaderFields mutableCopy];
-    for (NSString *header in self.headers) {
-        NSString *value = self.headers[header];
+        for (NSString *header in headers) {
+            NSString *value = headers[header];
             mutableHeaders[header] = value;
         }
-    NSHTTPURLResponse *httpResponse = [[NSHTTPURLResponse alloc] initWithURL:response.URL statusCode:self.statusCode HTTPVersion:self.version ?: @"HTTP/1.1" headerFields:[mutableHeaders copy]];
+        NSHTTPURLResponse *httpResponse = [[NSHTTPURLResponse alloc] initWithURL:response.URL statusCode:statusCode HTTPVersion:version headerFields:[mutableHeaders copy]];
         return httpResponse;
+    }];
 }
 
 @end