Refactoring to v.2.0
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relikd
@@ -1,245 +1,98 @@
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//
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// RSHTMLMetadata.m
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// RSXML
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// MIT License (MIT)
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//
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// Created by Brent Simmons on 3/6/16.
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// Copyright © 2016 Ranchero Software, LLC. All rights reserved.
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// Copyright (c) 2016 Brent Simmons
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// Copyright (c) 2018 Oleg Geier
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy of
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// this software and associated documentation files (the "Software"), to deal in
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// the Software without restriction, including without limitation the rights to
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// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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// of the Software, and to permit persons to whom the Software is furnished to do
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// so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#import "RSHTMLMetadata.h"
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#import "RSXMLInternal.h"
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static NSString *urlStringFromDictionary(NSDictionary *d);
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static NSString *absoluteURLStringWithRelativeURLString(NSString *relativeURLString, NSString *baseURLString);
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static NSString *absoluteURLStringWithDictionary(NSDictionary *d, NSString *baseURLString);
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static NSArray *objectsOfClassWithDictionaries(Class class, NSArray *dictionaries, NSString *baseURLString);
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static NSString *relValue(NSDictionary *d);
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static BOOL typeIsFeedType(NSString *type);
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RSFeedType RSFeedTypeFromLinkTypeAttribute(NSString * typeStr) {
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if (typeStr || typeStr.length > 0) {
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typeStr = [typeStr lowercaseString];
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if ([typeStr hasSuffix:@"/rss+xml"]) {
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return RSFeedTypeRSS;
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} else if ([typeStr hasSuffix:@"/atom+xml"]) {
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return RSFeedTypeAtom;
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}
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}
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return RSFeedTypeNone;
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}
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static NSString *kShortcutIconRelValue = @"shortcut icon";
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static NSString *kHrefKey = @"href";
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static NSString *kSrcKey = @"src";
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static NSString *kAppleTouchIconValue = @"apple-touch-icon";
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static NSString *kAppleTouchIconPrecomposedValue = @"apple-touch-icon-precomposed";
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static NSString *kSizesKey = @"sizes";
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static NSString *kTitleKey = @"title";
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static NSString *kRelKey = @"rel";
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static NSString *kAlternateKey = @"alternate";
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static NSString *kRSSSuffix = @"/rss+xml";
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static NSString *kAtomSuffix = @"/atom+xml";
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static NSString *kTypeKey = @"type";
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@interface RSHTMLMetadataAppleTouchIcon ()
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- (instancetype)initWithDictionary:(NSDictionary *)d baseURLString:(NSString *)baseURLString;
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@implementation RSHTMLMetadataLink
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- (NSString*)description { return self.link; }
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@end
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@interface RSHTMLMetadataFeedLink ()
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@implementation RSHTMLMetadataIconLink
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- (instancetype)initWithDictionary:(NSDictionary *)d baseURLString:(NSString *)baseURLString;
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@end
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@implementation RSHTMLMetadata
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#pragma mark - Init
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- (instancetype)initWithURLString:(NSString *)urlString dictionaries:(NSArray <NSDictionary *> *)dictionaries {
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self = [super init];
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if (!self) {
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return nil;
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}
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_baseURLString = urlString;
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_dictionaries = dictionaries;
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_faviconLink = [self resolvedLinkFromFirstDictionaryWithMatchingRel:kShortcutIconRelValue];
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NSArray *appleTouchIconDictionaries = [self appleTouchIconDictionaries];
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_appleTouchIcons = objectsOfClassWithDictionaries([RSHTMLMetadataAppleTouchIcon class], appleTouchIconDictionaries, urlString);
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NSArray *feedLinkDictionaries = [self feedLinkDictionaries];
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_feedLinks = objectsOfClassWithDictionaries([RSHTMLMetadataFeedLink class], feedLinkDictionaries, urlString);
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return self;
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}
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#pragma mark - Private
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- (NSDictionary *)firstDictionaryWithMatchingRel:(NSString *)valueToMatch {
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// Case-insensitive.
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for (NSDictionary *oneDictionary in self.dictionaries) {
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NSString *oneRelValue = relValue(oneDictionary);
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if (oneRelValue && [oneRelValue compare:valueToMatch options:NSCaseInsensitiveSearch] == NSOrderedSame) {
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return oneDictionary;
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- (CGSize)getSize {
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if (self.sizes && self.sizes.length > 0) {
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NSArray<NSString*> *parts = [self.sizes componentsSeparatedByString:@"x"];
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if (parts.count == 2) {
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return CGSizeMake([parts.firstObject intValue], [parts.lastObject intValue]);
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}
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}
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return nil;
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return CGSizeZero;
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}
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- (NSArray *)appleTouchIconDictionaries {
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NSMutableArray *dictionaries = [NSMutableArray new];
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for (NSDictionary *oneDictionary in self.dictionaries) {
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NSString *oneRelValue = relValue(oneDictionary).lowercaseString;
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if ([oneRelValue isEqualToString:kAppleTouchIconValue] || [oneRelValue isEqualToString:kAppleTouchIconPrecomposedValue]) {
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[dictionaries addObject:oneDictionary];
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}
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}
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return dictionaries;
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- (NSString*)description {
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return [NSString stringWithFormat:@"%@ [%@] (%@)", self.title, self.sizes, self.link];
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}
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- (NSArray *)feedLinkDictionaries {
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NSMutableArray *dictionaries = [NSMutableArray new];
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for (NSDictionary *oneDictionary in self.dictionaries) {
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NSString *oneRelValue = relValue(oneDictionary).lowercaseString;
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if (![oneRelValue isEqualToString:kAlternateKey]) {
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continue;
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}
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NSString *oneType = [oneDictionary rsxml_objectForCaseInsensitiveKey:kTypeKey];
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if (!typeIsFeedType(oneType)) {
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continue;
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}
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if (RSXMLStringIsEmpty(urlStringFromDictionary(oneDictionary))) {
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continue;
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}
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[dictionaries addObject:oneDictionary];
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}
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return dictionaries;
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}
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- (NSString *)resolvedLinkFromFirstDictionaryWithMatchingRel:(NSString *)relValue {
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NSDictionary *d = [self firstDictionaryWithMatchingRel:relValue];
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return absoluteURLStringWithDictionary(d, self.baseURLString);
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}
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@end
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static NSString *relValue(NSDictionary *d) {
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return [d rsxml_objectForCaseInsensitiveKey:kRelKey];
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}
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static NSString *urlStringFromDictionary(NSDictionary *d) {
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NSString *urlString = [d rsxml_objectForCaseInsensitiveKey:kHrefKey];
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if (urlString) {
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return urlString;
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}
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return [d rsxml_objectForCaseInsensitiveKey:kSrcKey];
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}
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static NSString *absoluteURLStringWithRelativeURLString(NSString *relativeURLString, NSString *baseURLString) {
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NSURL *url = [NSURL URLWithString:baseURLString];
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if (!url) {
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return nil;
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}
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NSURL *absoluteURL = [NSURL URLWithString:relativeURLString relativeToURL:url];
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return absoluteURL.absoluteString;
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}
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static NSString *absoluteURLStringWithDictionary(NSDictionary *d, NSString *baseURLString) {
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NSString *urlString = urlStringFromDictionary(d);
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if (RSXMLStringIsEmpty(urlString)) {
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return nil;
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}
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return absoluteURLStringWithRelativeURLString(urlString, baseURLString);
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}
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static NSArray *objectsOfClassWithDictionaries(Class class, NSArray *dictionaries, NSString *baseURLString) {
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NSMutableArray *objects = [NSMutableArray new];
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for (NSDictionary *oneDictionary in dictionaries) {
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id oneObject = [[class alloc] initWithDictionary:oneDictionary baseURLString:baseURLString];
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if (oneObject) {
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[objects addObject:oneObject];
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}
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}
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return [objects copy];
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}
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static BOOL typeIsFeedType(NSString *type) {
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type = type.lowercaseString;
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return [type hasSuffix:kRSSSuffix] || [type hasSuffix:kAtomSuffix];
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}
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@implementation RSHTMLMetadataAppleTouchIcon
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- (instancetype)initWithDictionary:(NSDictionary *)d baseURLString:(NSString *)baseURLString {
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self = [super init];
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if (!self) {
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return nil;
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}
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_urlString = absoluteURLStringWithDictionary(d, baseURLString);
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_sizes = [d rsxml_objectForCaseInsensitiveKey:kSizesKey];
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_rel = [d rsxml_objectForCaseInsensitiveKey:kRelKey];
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return self;
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}
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@end
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@implementation RSHTMLMetadataFeedLink
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- (instancetype)initWithDictionary:(NSDictionary *)d baseURLString:(NSString *)baseURLString {
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self = [super init];
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if (!self) {
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return nil;
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- (NSString*)description {
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NSString *prefix;
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switch (_type) {
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case RSFeedTypeNone: prefix = @"None"; break;
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case RSFeedTypeRSS: prefix = @"RSS"; break;
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case RSFeedTypeAtom: prefix = @"Atom"; break;
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}
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_urlString = absoluteURLStringWithDictionary(d, baseURLString);
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_title = [d rsxml_objectForCaseInsensitiveKey:kTitleKey];
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_type = [d rsxml_objectForCaseInsensitiveKey:kTypeKey];
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return self;
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return [NSString stringWithFormat:@"[%@] %@ (%@)", prefix, self.title, self.link];
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}
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@end
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@implementation RSHTMLMetadataAnchor
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- (NSString*)description {
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if (!_tooltip) {
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return [NSString stringWithFormat:@"%@ (%@)", self.title, self.link];
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}
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return [NSString stringWithFormat:@"%@ [%@] (%@)", self.title, self.tooltip, self.link];
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}
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@end
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@implementation RSHTMLMetadata
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- (NSString*)description {
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return [NSString stringWithFormat:@"favicon: %@\nFeed links: %@\nIcons: %@\n",
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self.faviconLink, self.feedLinks, self.iconLinks];
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}
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@end
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