real markdown support for descriptions

and update third-party licences in about page

app/build.gradle

@@ -53,6 +53,7 @@ ext {
     okHttpLibVersion = '3.12.6'
     icepickLibVersion = '3.2.0'
     stethoLibVersion = '1.5.0'
+    markwonVersion = '4.2.1'
 }
 
 dependencies {
@@ -108,4 +109,7 @@ dependencies {
 
     implementation "com.squareup.okhttp3:okhttp:${okHttpLibVersion}"
     debugImplementation "com.facebook.stetho:stetho-okhttp3:${stethoLibVersion}"
+
+    implementation "io.noties.markwon:core:${markwonVersion}"
+    implementation "io.noties.markwon:linkify:${markwonVersion}"
 }

app/src/main/java/org/schabi/newpipe/about/AboutActivity.java

@@ -32,18 +32,20 @@ public class AboutActivity extends AppCompatActivity {
      * List of all software components
      */
     private static final SoftwareComponent[] SOFTWARE_COMPONENTS = new SoftwareComponent[]{
-            new SoftwareComponent("Giga Get", "2014", "Peter Cai", "https://github.com/PaperAirplane-Dev-Team/GigaGet", StandardLicenses.GPL2),
+            new SoftwareComponent("Giga Get", "2014 - 2015", "Peter Cai", "https://github.com/PaperAirplane-Dev-Team/GigaGet", StandardLicenses.GPL2),
-            new SoftwareComponent("NewPipe Extractor", "2017", "Christian Schabesberger", "https://github.com/TeamNewPipe/NewPipeExtractor", StandardLicenses.GPL3),
+            new SoftwareComponent("NewPipe Extractor", "2017 - 2020", "Christian Schabesberger", "https://github.com/TeamNewPipe/NewPipeExtractor", StandardLicenses.GPL3),
             new SoftwareComponent("Jsoup", "2017", "Jonathan Hedley", "https://github.com/jhy/jsoup", StandardLicenses.MIT),
             new SoftwareComponent("Rhino", "2015", "Mozilla", "https://www.mozilla.org/rhino/", StandardLicenses.MPL2),
             new SoftwareComponent("ACRA", "2013", "Kevin Gaudin", "http://www.acra.ch", StandardLicenses.APACHE2),
             new SoftwareComponent("Universal Image Loader", "2011 - 2015", "Sergey Tarasevich", "https://github.com/nostra13/Android-Universal-Image-Loader", StandardLicenses.APACHE2),
-            new SoftwareComponent("CircleImageView", "2014 - 2017", "Henning Dodenhof", "https://github.com/hdodenhof/CircleImageView", StandardLicenses.APACHE2),
+            new SoftwareComponent("CircleImageView", "2014 - 2020", "Henning Dodenhof", "https://github.com/hdodenhof/CircleImageView", StandardLicenses.APACHE2),
             new SoftwareComponent("NoNonsense-FilePicker", "2016", "Jonas Kalderstam", "https://github.com/spacecowboy/NoNonsense-FilePicker", StandardLicenses.MPL2),
-            new SoftwareComponent("ExoPlayer", "2014-2017", "Google Inc", "https://github.com/google/ExoPlayer", StandardLicenses.APACHE2),
+            new SoftwareComponent("ExoPlayer", "2014 - 2020", "Google Inc", "https://github.com/google/ExoPlayer", StandardLicenses.APACHE2),
-            new SoftwareComponent("RxAndroid", "2015", "The RxAndroid authors", "https://github.com/ReactiveX/RxAndroid", StandardLicenses.APACHE2),
+            new SoftwareComponent("RxAndroid", "2015 - 2018", "The RxAndroid authors", "https://github.com/ReactiveX/RxAndroid", StandardLicenses.APACHE2),
-            new SoftwareComponent("RxJava", "2016-present", "RxJava Contributors", "https://github.com/ReactiveX/RxJava", StandardLicenses.APACHE2),
+            new SoftwareComponent("RxJava", "2016 - 2020", "RxJava Contributors", "https://github.com/ReactiveX/RxJava", StandardLicenses.APACHE2),
-            new SoftwareComponent("RxBinding", "2015", "Jake Wharton", "https://github.com/JakeWharton/RxBinding", StandardLicenses.APACHE2)
+            new SoftwareComponent("RxBinding", "2015 - 2018", "Jake Wharton", "https://github.com/JakeWharton/RxBinding", StandardLicenses.APACHE2),
+            new SoftwareComponent("PrettyTime", "2012 - 2020", "Lincoln Baxter, III", "https://github.com/ocpsoft/prettytime", StandardLicenses.APACHE2),
+            new SoftwareComponent("Markwon", "2017 - 2020", "Noties", "https://github.com/noties/Markwon", StandardLicenses.APACHE2)
     };
 
     /**

app/src/main/java/org/schabi/newpipe/fragments/detail/VideoDetailFragment.java

@@ -95,6 +95,8 @@ import java.util.List;
 import java.util.concurrent.TimeUnit;
 
 import icepick.State;
+import io.noties.markwon.Markwon;
+import io.noties.markwon.linkify.LinkifyPlugin;
 import io.reactivex.Single;
 import io.reactivex.android.schedulers.AndroidSchedulers;
 import io.reactivex.disposables.CompositeDisposable;
@@ -922,10 +924,6 @@ public class VideoDetailFragment
             return;
         }
 
-        if (description.getType() != Description.HTML) {
-            videoDescriptionView.setAutoLinkMask(Linkify.WEB_URLS);
-        }
-
         if (description.getType() == Description.HTML) {
             disposables.add(Single.just(description.getContent())
                     .map((@io.reactivex.annotations.NonNull String descriptionText) -> {
@@ -945,12 +943,14 @@ public class VideoDetailFragment
                         videoDescriptionView.setVisibility(View.VISIBLE);
                     }));
         } else if (description.getType() == Description.MARKDOWN) {
-            //in the future we would use a library or a good method to show markdown.
+            final Markwon markwon = Markwon.builder(getContext())
-            //rn, we just remove **bold**, and let PLAIN_TEXT otherwise
+                    .usePlugin(LinkifyPlugin.create())
-            videoDescriptionView.setText(description.getContent().replace("**", ""), TextView.BufferType.SPANNABLE);
+                    .build();
+            markwon.setMarkdown(videoDescriptionView, description.getContent());
             videoDescriptionView.setVisibility(View.VISIBLE);
         } else {
             //== Description.PLAIN_TEXT
+            videoDescriptionView.setAutoLinkMask(Linkify.WEB_URLS);
             videoDescriptionView.setText(description.getContent(), TextView.BufferType.SPANNABLE);
             videoDescriptionView.setVisibility(View.VISIBLE);
         }