metadata_extract library

This library provides two Metadata Parsers and two utility functions for retriveing and parsing documents from a url.

OpenGraphParser and HTMLMetaParser are Metadata parsers that takes in a dom.Document Utility functions extract and responseToDocument help retrieving and decoding documents.

Classes

HtmlMetaParser
Takes a http.document and parses Metadata from <meta>, <title>, <img> tags
JsonLdParser
Takes a http.document and parses Metadata from json-ld data in <script>
Metadata
Container class for Metadata
MetadataKeys
The base class for implementing a parser
MetadataParser
Does Works with BaseMetadataParser
OpenGraphParser
Takes a http.Document and parses Metadata from <meta property='og:*'> tags
TwitterCardParser
Takes a http.Document and parses Metadata from <meta property='twitter:*'> tags

Functions

extract(String url) → Future<Metadata?>
Fetches a url, validates it, and returns Metadata.
responseToDocument(Response response) → Document?
Takes an http.Response and returns a html.Document

Typedefs

ParseFunction<T extends BaseMetadataParser> = T Function(Document? doc)