X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/816ee8ec92735b5c80b382857953ac4325096a71..009a4dbb673507ce06d8933cd836a1284e360330:/app/helpers/browse_tags_helper.rb

diff --git a/app/helpers/browse_tags_helper.rb b/app/helpers/browse_tags_helper.rb
index bbf6f3cf7..4f73eb9d7 100644
--- a/app/helpers/browse_tags_helper.rb
+++ b/app/helpers/browse_tags_helper.rb
@@ -21,6 +21,8 @@ module BrowseTagsHelper
       link_to h(wmc[:title]), wmc[:url], :title => t("browse.tag_details.wikimedia_commons_link", :page => wmc[:title])
     elsif url = wiki_link("tag", "#{key}=#{value}")
       link_to h(value), url, :title => t("browse.tag_details.wiki_link.tag", :key => key, :value => value)
+    elsif email = email_link(key, value)
+      link_to(h(email[:email]), email[:url], :title => t("browse.tag_details.email_link", :email => email[:email]))
     elsif phones = telephone_links(key, value)
       # similarly, telephone_links() returns an array of phone numbers
       phones = phones.map do |p|
@@ -123,6 +125,25 @@ module BrowseTagsHelper
     nil
   end
 
+  def email_link(_key, value)
+    # Does the value look like an email? eg "someone@domain.tld"
+
+    #  Uses Ruby built-in regexp to validate email.
+    #  This will not catch certain valid emails containing comments, whitespace characters,
+    #  and quoted strings.
+    #    (see: https://github.com/ruby/ruby/blob/master/lib/uri/mailto.rb)
+
+    # remove any leading and trailing whitespace
+    email = value.strip
+
+    if email.match?(URI::MailTo::EMAIL_REGEXP)
+      # add 'mailto:'' prefix
+      return { :email => email, :url => "mailto:#{email}" }
+    end
+
+    nil
+  end
+
   def telephone_links(_key, value)
     # Does it look like a global phone number? eg "+1 (234) 567-8901 "
     # or a list of alternate numbers separated by ;