92 lines
3.0 KiB
Objective-C
92 lines
3.0 KiB
Objective-C
//
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// MIT License (MIT)
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//
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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 <libxml/xmlstring.h>
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#import "RSHTMLLinkParser.h"
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#import "RSHTMLMetadata.h"
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#import "NSDictionary+RSXML.h"
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@interface RSHTMLLinkParser()
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@property (nonatomic) NSMutableArray<RSHTMLMetadataAnchor*> *mutableLinksList;
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@property (nonatomic) NSMutableString *currentText;
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@end
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@implementation RSHTMLLinkParser
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#pragma mark - RSXMLParserDelegate
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+ (BOOL)isHTMLParser { return YES; }
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- (BOOL)xmlParserWillStartParsing {
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_mutableLinksList = [NSMutableArray new];
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return YES;
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}
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- (id)xmlParserWillReturnDocument {
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return [_mutableLinksList copy];
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}
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#pragma mark - RSSAXParserDelegate
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- (void)saxParser:(RSSAXParser *)SAXParser XMLStartElement:(const xmlChar *)localName attributes:(const xmlChar **)attributes {
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if (EqualBytes(localName, "a", 2)) { // 2 because length is not checked
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NSDictionary *attribs = [SAXParser attributesDictionaryHTML:attributes];
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if (!attribs || attribs.count == 0) {
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return;
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}
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NSString *href = [attribs rsxml_objectForCaseInsensitiveKey:@"href"];
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if (!href) {
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return;
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}
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RSHTMLMetadataAnchor *obj = [RSHTMLMetadataAnchor new];
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[self.mutableLinksList addObject:obj];
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// set link properties
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obj.tooltip = [attribs rsxml_objectForCaseInsensitiveKey:@"title"];
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obj.link = [[NSURL URLWithString:href relativeToURL:self.documentURI] absoluteString];
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// begin storing data for link description
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[SAXParser beginStoringCharacters];
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self.currentText = [NSMutableString new];
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}
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}
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- (void)saxParser:(RSSAXParser *)SAXParser XMLEndElement:(const xmlChar *)localName {
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if (self.currentText != nil) {
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NSString *str = SAXParser.currentStringWithTrimmedWhitespace;
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if (str) {
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[self.currentText appendString:str];
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}
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if (EqualBytes(localName, "a", 2)) { // 2 because length is not checked
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self.mutableLinksList.lastObject.title = self.currentText;
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self.currentText = nil;
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}
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}
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}
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@end
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