notes: replace hashtags and mentions

src/formatters.nim

@@ -27,6 +27,8 @@ let
   userPicRegex = re"_(normal|bigger|mini|200x200|400x400)(\.[A-z]+)$"
   extRegex = re"(\.[A-z]+)$"
   illegalXmlRegex = re"(*UTF8)[^\x09\x0A\x0D\x20-\x{D7FF}\x{E000}-\x{FFFD}\x{10000}-\x{10FFFF}]"
+  hashtagRegex = re"#(\w+)"
+  mentionRegex = re"@(\w+)"
 
 proc getUrlPrefix*(cfg: Config): string =
   if cfg.useHttps: https & cfg.hostname
@@ -78,6 +80,13 @@ proc replaceUrls*(body: string; prefs: Prefs; absolute=""): string =
   if absolute.len > 0 and "href" in result:
     result = result.replace("href=\"/", &"href=\"{absolute}/")
 
+proc replaceHashtagsAndMentions*(body: string): string =
+  result = body
+  result = result.replacef(hashtagRegex, a(
+    "#$1", href = "/search?q=%23$1"))
+  result = result.replacef(mentionRegex, a(
+    "@$1", href = "/$1"))
+
 proc getM3u8Url*(content: string): string =
   var matches: array[1, string]
   if re.find(content, m3u8Regex, matches) != -1:

src/views/notes.nim

@@ -51,13 +51,13 @@ proc renderNoteParagraph(articleParagraph: ArticleParagraph; article: Article):
   for er in articleParagraph.entityRanges:
     # flush remaining text
     if er.offset > last:
-      result.add text text.runeSubStr(last, er.offset - last)
+      result.add verbatim text.runeSubStr(last, er.offset - last).replaceHashtagsAndMentions
     
     let entity = article.entities[er.key]
     case entity.entityType
     of ArticleEntityType.link:
       let link = buildHtml(a(href=entity.url)):
-        text text.runeSubStr(er.offset, er.length)
+        verbatim text.runeSubStr(er.offset, er.length).replaceHashtagsAndMentions
       result.add link
     of ArticleEntityType.media:
       for id in entity.mediaIds:
@@ -79,7 +79,7 @@ proc renderNoteParagraph(articleParagraph: ArticleParagraph; article: Article):
   
   # flush remaining text
   if last < text.len:
-    result.add text text.runeSubStr(last)
+    result.add verbatim text.runeSubStr(last).replaceHashtagsAndMentions
 
 proc renderNote*(article: Article; prefs: Prefs): VNode =
   let cover = getSmallPic(article.coverImage)