FIX readme decoder bug

safe

app/helpers/repositories_helper.rb

@@ -33,34 +33,38 @@ module RepositoriesHelper
 
   def readme_render_decode64_content(str, path)
     return nil if str.blank?
-    content = Base64.decode64(str).force_encoding('UTF-8')
+    begin
+      content = Base64.decode64(str).force_encoding('UTF-8')
 
-    c_regex = /\!\[.*?\]\((.*?)\)/
-    src_regex = /src=\"(.*?)\"/
-    ss = content.to_s.scan(c_regex)
-    ss_src = content.to_s.scan(src_regex)
-    total_images = ss + ss_src
-    if total_images.length > 0
-      total_images.each do |s|
-        image_title = /\"(.*?)\"/
-        r_content = s[0]
-        remove_title = r_content.to_s.scan(image_title)
-        if remove_title.length > 0
-          r_content = r_content.gsub(/#{remove_title[0]}/, "").strip
+      c_regex = /\!\[.*?\]\((.*?)\)/
+      src_regex = /src=\"(.*?)\"/
+      ss = content.to_s.scan(c_regex)
+      ss_src = content.to_s.scan(src_regex)
+      total_images = ss + ss_src
+      if total_images.length > 0
+        total_images.each do |s|
+          image_title = /\"(.*?)\"/
+          r_content = s[0]
+          remove_title = r_content.to_s.scan(image_title)
+          if remove_title.length > 0
+            r_content = r_content.gsub(/#{remove_title[0]}/, "").strip
+          end
+          if r_content.include?("?")
+            new_r_content = r_content + "&raw=true"
+          else
+            new_r_content = r_content + "?raw=true"
+          end
+          unless r_content.include?("http://") || r_content.include?("https://") || r_content.include?("mailto:")
+            new_r_content = "#{path}" + new_r_content
+          end
+          content = content.gsub(/#{r_content}/, new_r_content)
         end
-        if r_content.include?("?")
-          new_r_content = r_content + "&raw=true"
-        else
-          new_r_content = r_content + "?raw=true"
-        end
-        unless r_content.include?("http://") || r_content.include?("https://") || r_content.include?("mailto:")
-          new_r_content = "#{path}" + new_r_content
-        end
-        content = content.gsub(/#{r_content}/, new_r_content)
       end
+  
+      return content
+    rescue
+      return str
     end
-
-    return content
   end
 
   # unix_time values for example: 1604382982

app/views/repositories/detail.json.jbuilder

@@ -1,7 +1,7 @@
 json.content @project.content
 json.website @project.website
 if @result[:readme].blank?
-  json.readme nil!
+  json.readme nil
 else
   json.readme @result[:readme].merge(content: readme_render_decode64_content(@result[:readme]["content"], nil))
 end