Fix new rubocop warnings

[rails.git] / app / helpers / browse_tags_helper.rb

diff --git a/app/helpers/browse_tags_helper.rb b/app/helpers/browse_tags_helper.rb
index bbf6f3cf72ea6a79436a9add4df38aeed80a110e..1c36743f8b9caa12646be81829c1df9e454d770c 100644 (file)
--- 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|
@@ -28,7 +30,7 @@ module BrowseTagsHelper
       end
       safe_join(phones, "; ")
     elsif colour_value = colour_preview(key, value)
-      content_tag(:span, "", :class => "colour-preview-box", :"data-colour" => colour_value, :title => t("browse.tag_details.colour_preview", :colour_value => colour_value)) + colour_value
+      tag.span("", :class => "colour-preview-box", :"data-colour" => colour_value, :title => t("browse.tag_details.colour_preview", :colour_value => colour_value)) + colour_value
     else
       linkify h(value)
     end
@@ -56,9 +58,10 @@ module BrowseTagsHelper
 
   def wikipedia_link(key, value)
     # Some k/v's are wikipedia=http://en.wikipedia.org/wiki/Full%20URL
-    return nil if value =~ %r{^https?://}
+    return nil if %r{^https?://}.match?(value)
 
-    if key == "wikipedia"
+    case key
+    when "wikipedia"
       # This regex should match Wikipedia language codes, everything
       # from de to zh-classical
       lang = if value =~ /^([a-z-]{2,12}):(.+)$/i
@@ -69,7 +72,7 @@ module BrowseTagsHelper
                # Value is <title> so default to English Wikipedia
                "en"
              end
-    elsif key =~ /^wikipedia:(\S+)$/
+    when /^wikipedia:(\S+)$/
       # Language is in the key, so assume value is the title
       lang = Regexp.last_match(1)
     else
@@ -123,6 +126,25 @@ 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 ;
@@ -134,7 +156,7 @@ module BrowseTagsHelper
     #
     # Also accepting / as a visual separator although not given in RFC 3966,
     # because it is used as a visual separator in OSM data in some countries.
-    if value.match?(%r{^\s*\+[\d\s\(\)/\.-]{6,25}\s*(;\s*\+[\d\s\(\)/\.-]{6,25}\s*)*$})
+    if value.match?(%r{^\s*\+[\d\s()/.-]{6,25}\s*(;\s*\+[\d\s()/.-]{6,25}\s*)*$})
       return value.split(";").map do |phone_number|
         # for display, remove leading and trailing whitespace
         phone_number = phone_number.strip