web_scraper

Description:

web scraper

A Simple Web Scraper for Dart & Flutter #
A very basic web scraper implementation to scrap html elements from a web page.
Pull requests are most welcome.
Getting Started #
In your pubspec.yaml root add:
dependencies:
web_scraper:
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then,
import 'package:web_scraper/web_scraper.dart';
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Note that as of version 0.0.6, the project supports not only Flutter projects, but also Dart projects.
Implementation #
final webScraper = WebScraper('https://webscraper.io');
if (await webScraper.loadWebPage('/test-sites/e-commerce/allinone')) {
List<Map<String, dynamic>> elements = webScraper.getElement('h3.title > a.caption', ['href']);
print(elements);
}
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Checkout web_scraper_test.dart file to have closer look on all functionalities.
Methods #



Method
Description
Arguments
Return Type




loadWebPage
Loads the webpage into response object and then parse it into the document object
String route
Future <bool>


loadFromURL
Loads the webpage from provided URL into response object and then parse it into the document object
String page
Future <bool>


loadFromString
Loads the webpage from a String (usually stored by the getPageContent method) into response object and then parse it into the document object. This operation is completely synchronous and exists as a helper method to perform compute() flutter operations and avoid jank
String responseBodyAsString
Future <bool>


getPageContent
Returns webpage's html in string format
Void
String body


getElement
Returns List of elements found at specified address
String address, List <String> attributes
List <Map<String, dynamic>>


getElementTitle
Returns List of element titles found at specified address
String address
List <String>


getElementAttribute
Returns List of elements single attribute found at specified address (if you wish to get multiple attributes at once, please use getElement instead)
String address, List <String> attributes
List <String>


getAllScripts
Returns the list of all data enclosed in script tags of the document
Void
List <String>


getScriptVariables
Returns Map between given variable names and list of their occurence in the script tags
List <String> variableNames
Map <String, dynamic>



Contributing #

Please branch from develop to implement bug fix/new feature.
Ensure that code is formatted according to base dart rules & using the latest stable version of dart.
Open a PR with develop as the PR target with a clear description.