From 9d1c7f16a57169f98d65bbcd61f37daf2b0b6acb Mon Sep 17 00:00:00 2001
From: Sorunome <mail@sorunome.de>
Date: Fri, 15 May 2020 21:00:10 +0200
Subject: [PATCH] add pill parsing to markdown

---
 lib/src/utils/markdown.dart | 14 +++++++++++++-
 test/markdown_test.dart     |  5 +++++
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/lib/src/utils/markdown.dart b/lib/src/utils/markdown.dart
index f0577d2..b9ae5df 100644
--- a/lib/src/utils/markdown.dart
+++ b/lib/src/utils/markdown.dart
@@ -73,12 +73,24 @@ class EmoteSyntax extends InlineSyntax {
   }
 }
 
+class PillSyntax extends InlineSyntax {
+  PillSyntax() : super(r'([@#!][^\s:]*:[^\s]+\.\w+)');
+
+  @override
+  bool onMatch(InlineParser parser, Match match) {
+    final identifier = match[1];
+    final element = Element.text('a', identifier);
+    element.attributes['href'] = 'https://matrix.to/#/${identifier}';
+    parser.addNode(element);
+    return true;
+  }
+}
 
 String markdown(String text, [Map<String, Map<String, String>> emotePacks]) {
   emotePacks ??= <String, Map<String, String>>{};
   var ret = markdownToHtml(text,
     extensionSet: ExtensionSet.commonMark,
-    inlineSyntaxes: [StrikethroughSyntax(), LinebreakSyntax(), SpoilerSyntax(), EmoteSyntax(emotePacks)],
+    inlineSyntaxes: [StrikethroughSyntax(), LinebreakSyntax(), SpoilerSyntax(), EmoteSyntax(emotePacks), PillSyntax()],
   );
     
   var stripPTags = '<p>'.allMatches(ret).length <= 1;
diff --git a/test/markdown_test.dart b/test/markdown_test.dart
index f11af69..58db060 100644
--- a/test/markdown_test.dart
+++ b/test/markdown_test.dart
@@ -38,5 +38,10 @@ void main() {
       expect(markdown(':invalid:', emotePacks), ':invalid:');
       expect(markdown(':room~invalid:', emotePacks), ':room~invalid:');
     });
+    test('pills', () {
+      expect(markdown('Hey @sorunome:sorunome.de!'), 'Hey <a href="https://matrix.to/#/@sorunome:sorunome.de">@sorunome:sorunome.de</a>!');
+      expect(markdown('#fox:sorunome.de: you all are awesome'), '<a href="https://matrix.to/#/#fox:sorunome.de">#fox:sorunome.de</a>: you all are awesome');
+      expect(markdown('!blah:example.org'), '<a href="https://matrix.to/#/!blah:example.org">!blah:example.org</a>');
+    });
   });
 }