diff options
Diffstat (limited to 'src/main/java/de/pixart/messenger/utils')
| -rw-r--r-- | src/main/java/de/pixart/messenger/utils/RichPreview.java | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/src/main/java/de/pixart/messenger/utils/RichPreview.java b/src/main/java/de/pixart/messenger/utils/RichPreview.java new file mode 100644 index 000000000..639a02c8d --- /dev/null +++ b/src/main/java/de/pixart/messenger/utils/RichPreview.java @@ -0,0 +1,178 @@ +package de.pixart.messenger.utils; + +import android.os.AsyncTask; +import android.webkit.URLUtil; + +import org.jsoup.Jsoup; +import org.jsoup.nodes.Document; +import org.jsoup.nodes.Element; +import org.jsoup.select.Elements; + +import java.io.IOException; +import java.net.URI; +import java.net.URISyntaxException; + +import io.github.ponnamkarthik.richlinkpreview.MetaData; +import io.github.ponnamkarthik.richlinkpreview.ResponseListener; + +/** + * Created by ponna on 16-01-2018. + */ + +public class RichPreview { + + MetaData metaData; + ResponseListener responseListener; + String url; + + public RichPreview(ResponseListener responseListener) { + this.responseListener = responseListener; + metaData = new MetaData(); + } + + public void getPreview(String url) { + this.url = url; + new RichPreview.getData().execute(); + } + + private class getData extends AsyncTask<Void, Void, Void> { + + @Override + protected Void doInBackground(Void... params) { + Document doc = null; + try { + doc = Jsoup.connect(url) + .timeout(30 * 1000) + .get(); + + Elements elements = doc.getElementsByTag("meta"); + + // getTitle doc.select("meta[property=og:title]") + String title = doc.select("meta[property=og:title]").attr("content"); + + if (title == null || title.isEmpty()) { + title = doc.title(); + } + metaData.setTitle(title); + + //getDescription + String description = doc.select("meta[name=description]").attr("content"); + if (description.isEmpty() || description == null) { + description = doc.select("meta[name=Description]").attr("content"); + } + if (description.isEmpty() || description == null) { + description = doc.select("meta[property=og:description]").attr("content"); + } + if (description.isEmpty() || description == null) { + description = ""; + } + metaData.setDescription(description); + + + // getMediaType + Elements mediaTypes = doc.select("meta[name=medium]"); + String type = ""; + if (mediaTypes.size() > 0) { + String media = mediaTypes.attr("content"); + + type = media.equals("image") ? "photo" : media; + } else { + type = doc.select("meta[property=og:type]").attr("content"); + } + metaData.setMediatype(type); + + + //getImages + Elements imageElements = doc.select("meta[property=og:image]"); + if (imageElements.size() > 0) { + String image = imageElements.attr("content"); + if (!image.isEmpty()) { + metaData.setImageurl(resolveURL(url, image)); + } + } + if (metaData.getImageurl().isEmpty()) { + String src = doc.select("link[rel=image_src]").attr("href"); + if (!src.isEmpty()) { + metaData.setImageurl(resolveURL(url, src)); + } else { + src = doc.select("link[rel=apple-touch-icon]").attr("href"); + if (!src.isEmpty()) { + metaData.setImageurl(resolveURL(url, src)); + metaData.setFavicon(resolveURL(url, src)); + } else { + src = doc.select("link[rel=icon]").attr("href"); + if (!src.isEmpty()) { + metaData.setImageurl(resolveURL(url, src)); + metaData.setFavicon(resolveURL(url, src)); + } + } + } + } + + //Favicon + String src = doc.select("link[rel=apple-touch-icon]").attr("href"); + if (!src.isEmpty()) { + metaData.setFavicon(resolveURL(url, src)); + } else { + src = doc.select("link[rel=icon]").attr("href"); + if (!src.isEmpty()) { + metaData.setFavicon(resolveURL(url, src)); + } + } + + for (Element element : elements) { + if (element.hasAttr("property")) { + String str_property = element.attr("property").toString().trim(); + if (str_property.equals("og:url")) { + metaData.setUrl(element.attr("content").toString()); + } + if (str_property.equals("og:site_name")) { + metaData.setSitename(element.attr("content").toString()); + } + } + } + + if (metaData.getUrl().equals("") || metaData.getUrl().isEmpty()) { + URI uri = null; + try { + uri = new URI(url); + } catch (URISyntaxException e) { + e.printStackTrace(); + } + if (url == null) { + metaData.setUrl(url); + } else { + metaData.setUrl(uri != null ? uri.getHost() : null); + } + } + + } catch (IOException e) { + e.printStackTrace(); + responseListener.onError(new Exception("No Html Received from " + url + " Check your Internet " + e.getLocalizedMessage())); + } + return null; + } + + @Override + protected void onPostExecute(Void aVoid) { + super.onPostExecute(aVoid); + responseListener.onData(metaData); + } + } + + private String resolveURL(String url, String part) { + if (URLUtil.isValidUrl(part)) { + return part; + } else { + URI base_uri = null; + try { + base_uri = new URI(url); + } catch (URISyntaxException e) { + e.printStackTrace(); + } + base_uri = base_uri != null ? base_uri.resolve(part) : null; + return base_uri != null ? base_uri.toString() : null; + } + } +} + |