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Crawls and gathers open graph and twitter cards information from links

linkfo #

Retrieve basic information from links

Getting Started #

install linkfo:

    linkfo: <latest_version>

Linkfo uses sealed unions to handle the case of possible matches:

const url = 'https://www.youtube.com/watch?v=45MIykWJ-C4';

final response = await client.get(Uri.parse(url));
final scraper = TwitterCardsScraper(body: response.body, url: url);
final info = scraper.scrape();

info.map(
  app: (_) {
    // ...
  },
  summaryLargeImage: (_) {
    // ...
  },
  player: (playerInfo) {
    print(playerInfo.title);
    print(playerInfo.player);
  },
  summary: (_) {
    // ...
  },
);
const url = 'https://www.imdb.com/title/tt0117500/';

final response = await client.get(Uri.parse(url));
final scraper = OpenGraphScraper(body: response.body, url: url);
final info = scraper.scrape();

expect(info.description, isNotNull);
expect(info.image, isNotNull);
expect(info.title, isNotNull);

If you intend to match all possible cases, you can go so far as to prepare for all cases:

const url = 'https://www.youtube.com/watch?v=45MIykWJ-C4';

final response = await client.get(Uri.parse(url));
final info = Scraper.parse(body: response.body, url: url);

info.maybeWhen(
  openGraph: (info) {
    print(info.description);
    print(info.image);
    print(info.title);
  },
  twitterCards: (_) {
    // ...
  },
  orElse: () {
    // ...
  },
);

Currently the only supported parsers are Amazon (ish), Open Graph and Twitter Cards.

Note #

This api is in early development and might change drastically as I look for the best way to return parsed information.

PRs and Issues welcome

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Publisher

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Crawls and gathers open graph and twitter cards information from links

Repository (GitHub)
View/report issues

License

unknown (LICENSE)

Dependencies

collection, flutter, freezed_annotation, html, json_annotation, path

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