94 lines
3.1 KiB
Objective-C
94 lines
3.1 KiB
Objective-C
//
|
|
// MIT License (MIT)
|
|
//
|
|
// Copyright (c) 2016 Brent Simmons
|
|
// Copyright (c) 2018 Oleg Geier
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy of
|
|
// this software and associated documentation files (the "Software"), to deal in
|
|
// the Software without restriction, including without limitation the rights to
|
|
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
|
|
// of the Software, and to permit persons to whom the Software is furnished to do
|
|
// so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in all
|
|
// copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
// SOFTWARE.
|
|
|
|
#import <libxml/xmlstring.h>
|
|
|
|
#import "RSHTMLLinkParser.h"
|
|
#import "RSHTMLMetadata.h"
|
|
#import "NSDictionary+RSXML.h"
|
|
|
|
@interface RSHTMLLinkParser()
|
|
@property (nonatomic, readonly) NSURL *baseURL;
|
|
@property (nonatomic) NSMutableArray<RSHTMLMetadataAnchor*> *mutableLinksList;
|
|
@property (nonatomic) NSMutableString *currentText;
|
|
@end
|
|
|
|
@implementation RSHTMLLinkParser
|
|
|
|
#pragma mark - RSXMLParserDelegate
|
|
|
|
+ (BOOL)isHTMLParser { return YES; }
|
|
|
|
- (BOOL)xmlParserWillStartParsing {
|
|
_baseURL = [NSURL URLWithString:self.documentURI];
|
|
_mutableLinksList = [NSMutableArray new];
|
|
return YES;
|
|
}
|
|
|
|
- (id)xmlParserWillReturnDocument {
|
|
return [_mutableLinksList copy];
|
|
}
|
|
|
|
|
|
#pragma mark - RSSAXParserDelegate
|
|
|
|
|
|
- (void)saxParser:(RSSAXParser *)SAXParser XMLStartElement:(const xmlChar *)localName attributes:(const xmlChar **)attributes {
|
|
|
|
if (EqualBytes(localName, "a", 2)) { // 2 because length is not checked
|
|
NSDictionary *attribs = [SAXParser attributesDictionaryHTML:attributes];
|
|
if (!attribs || attribs.count == 0) {
|
|
return;
|
|
}
|
|
NSString *href = [attribs rsxml_objectForCaseInsensitiveKey:@"href"];
|
|
if (!href) {
|
|
return;
|
|
}
|
|
RSHTMLMetadataAnchor *obj = [RSHTMLMetadataAnchor new];
|
|
[self.mutableLinksList addObject:obj];
|
|
// set link properties
|
|
obj.tooltip = [attribs rsxml_objectForCaseInsensitiveKey:@"title"];
|
|
obj.link = [[NSURL URLWithString:href relativeToURL:self.baseURL] absoluteString];
|
|
// begin storing data for link description
|
|
[SAXParser beginStoringCharacters];
|
|
self.currentText = [NSMutableString new];
|
|
}
|
|
}
|
|
|
|
- (void)saxParser:(RSSAXParser *)SAXParser XMLEndElement:(const xmlChar *)localName {
|
|
|
|
if (self.currentText != nil) {
|
|
NSString *str = SAXParser.currentStringWithTrimmedWhitespace;
|
|
if (str) {
|
|
[self.currentText appendString:str];
|
|
}
|
|
if (EqualBytes(localName, "a", 2)) { // 2 because length is not checked
|
|
self.mutableLinksList.lastObject.title = self.currentText;
|
|
self.currentText = nil;
|
|
}
|
|
}
|
|
}
|
|
|
|
@end
|