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Code Quality Rank: L3
Programming language: Objective-C
License: MIT License
Tags: XML / HTML / CSV    
Latest version: v2.1.2

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README

Ono (斧)

Foundation lacks a convenient, cross-platform way to work with HTML and XML. NSXMLParser is an event-driven, SAX-style API that can be cumbersome to work with. NSXMLDocument, offers a more convenient DOM-style API, but is only supported on macOS.

Ono offers a sensible way to work with XML & HTML on Apple platforms in Objective-C and Swift

Whether your app needs to scrape a website, parse an RSS feed, or interface with a XML-RPC webservice, Ono will make your day a whole lot less terrible.

Ono (斧) means "axe", in homage to Nokogiri (鋸), which means "saw".

Features

  • [x] Simple, modern API following standard Objective-C conventions, including extensive use of blocks and NSFastEnumeration
  • [x] Extremely performant document parsing and traversal, powered by libxml2
  • [x] Support for both XPath and CSS queries
  • [x] Automatic conversion of date and number values
  • [x] Correct, common-sense handling of XML namespaces for elements and attributes
  • [x] Ability to load HTML and XML documents from either NSString or NSData
  • [x] Full documentation
  • [x] Comprehensive test suite

Installation

CocoaPods is the recommended method of installing Ono. Add the following line to your Podfile:

Podfile
pod 'Ono'

Usage

Swift

import Foundation
import Ono

guard let url = Bundle.main.url(forResource: "nutrition", withExtension: "xml"),
    let data = try? Data(contentsOf: url) else
{
    fatalError("Missing resource: nutrition.xml")
}

let document = try ONOXMLDocument(data: data)
document.rootElement.tag

for element in document.rootElement.children.first?.children ?? [] {
    let nutrient = element.tag
    let amount = element.numberValue!
    let unit = element.attributes["units"]!

    print("- \(amount)\(unit) \(nutrient)")
}

document.enumerateElements(withXPath: "//food/name") { (element, _, _) in
    print(element)
}

document.enumerateElements(withCSS: "food > serving[units]") { (element, _, _) in
    print(element)
}

Objective-C

#import "Ono.h"

NSData *data = ...;
NSError *error;

ONOXMLDocument *document = [ONOXMLDocument XMLDocumentWithData:data error:&error];
for (ONOXMLElement *element in document.rootElement.children) {
    NSLog(@"%@: %@", element.tag, element.attributes);
}

// Support for Namespaces
NSString *author = [[document.rootElement firstChildWithTag:@"creator" inNamespace:@"dc"] stringValue];

// Automatic Conversion for Number & Date Values
NSDate *date = [[document.rootElement firstChildWithTag:@"created_at"] dateValue]; // ISO 8601 Timestamp
NSInteger numberOfWords = [[[document.rootElement firstChildWithTag:@"word_count"] numberValue] integerValue];
BOOL isPublished = [[[document.rootElement firstChildWithTag:@"is_published"] numberValue] boolValue];

// Convenient Accessors for Attributes
NSString *unit = [document.rootElement firstChildWithTag:@"Length"][@"unit"];
NSDictionary *authorAttributes = [[document.rootElement firstChildWithTag:@"author"] attributes];

// Support for XPath & CSS Queries
[document enumerateElementsWithXPath:@"//Content" usingBlock:^(ONOXMLElement *element, NSUInteger idx, BOOL *stop) {
    NSLog(@"%@", element);
}];

Demo

Build and run the example project in Xcode to see Ono in action, or check out the provided Swift Playground.

Requirements

Ono is compatible with iOS 5 and higher, as well as macOS 10.7 and higher. It requires the libxml2 library, which is included automatically when installed with CocoaPods, or added manually by adding "libxml2.dylib" to the target's "Link Binary With Libraries" build phase.

Contact

Mattt

License

Ono is available under the MIT license. See the LICENSE file for more info.


*Note that all licence references and agreements mentioned in the Ono README section above are relevant to that project's source code only.