change how codes are highlighteg

app/helpers/submissions_helper.rb

@@ -8,4 +8,17 @@ def censored(s)
     end
     return false
   end
+
+  def language_class(lang)
+    case lang
+    when "c++11", "c++"
+      return "language-cpp"
+    when "c"
+      return "language-c"
+    when "haskell"
+      return "language-haskell"
+    else
+      return "language-clike"
+    end
+  end
 end

app/views/submissions/show.html.erb

@@ -1,6 +1,3 @@
-<%= javascript_include_tag 	"/stylesheets/prism.js" %>
-<%= stylesheet_link_tag 	"/stylesheets/prism.css" %>
-
 <% if censored(@submission) %>
   <h4 class="page-header">Results of submission #<code>censored</code></h4>
   <code>censored</code>
@@ -124,9 +121,13 @@
 </div>
 
 <% if user_signed_in? and ( current_user.admin? or current_user.id == @submission.user_id ) %>
-  <pre class="line-numbers"><code class="<%= @submission.compiler == "c" ? "language-c" : "language-cpp" %>"><%= @submission.code %></code></pre>
+  <pre class="line-numbers"><code class="<%= language_class(@submission.compiler) %>"><%= @submission.code %></code></pre>
 <% end %>
 
 <%= link_to 'Back to Top', '#', :class => 'btn btn-default btn-xs' %>
 
 <% end %>
+
+<%= javascript_include_tag 	"/codehighlighter/prism.js" %>
+<%= stylesheet_link_tag 	"/codehighlighter/prism.css" %>
+

public/codehighlighter/prism.css

@@ -0,0 +1,160 @@
+/* http://prismjs.com/download.html?themes=prism-okaidia&languages=clike+c+cpp+haskell&plugins=line-numbers */
+/**
+ * okaidia theme for JavaScript, CSS and HTML
+ * Loosely based on Monokai textmate theme by http://www.monokai.nl/
+ * @author ocodia
+ */
+
+code[class*="language-"],
+pre[class*="language-"] {
+	color: #f8f8f2;
+	text-shadow: 0 1px rgba(0, 0, 0, 0.3);
+	font-family: Consolas, Monaco, 'Andale Mono', monospace;
+	direction: ltr;
+	text-align: left;
+	white-space: pre;
+	word-spacing: normal;
+	word-break: normal;
+	line-height: 1.5;
+
+	-moz-tab-size: 4;
+	-o-tab-size: 4;
+	tab-size: 4;
+
+	-webkit-hyphens: none;
+	-moz-hyphens: none;
+	-ms-hyphens: none;
+	hyphens: none;
+}
+
+/* Code blocks */
+pre[class*="language-"] {
+	padding: 1em;
+	margin: .5em 0;
+	overflow: auto;
+	border-radius: 0.3em;
+}
+
+:not(pre) > code[class*="language-"],
+pre[class*="language-"] {
+	background: #272822;
+}
+
+/* Inline code */
+:not(pre) > code[class*="language-"] {
+	padding: .1em;
+	border-radius: .3em;
+}
+
+.token.comment,
+.token.prolog,
+.token.doctype,
+.token.cdata {
+	color: slategray;
+}
+
+.token.punctuation {
+	color: #f8f8f2;
+}
+
+.namespace {
+	opacity: .7;
+}
+
+.token.property,
+.token.tag,
+.token.constant,
+.token.symbol,
+.token.deleted {
+	color: #f92672;
+}
+
+.token.boolean,
+.token.number {
+	color: #ae81ff;
+}
+
+.token.selector,
+.token.attr-name,
+.token.string,
+.token.char,
+.token.builtin,
+.token.inserted {
+	color: #a6e22e;
+}
+
+.token.operator,
+.token.entity,
+.token.url,
+.language-css .token.string,
+.style .token.string,
+.token.variable {
+	color: #f8f8f2;
+}
+
+.token.atrule,
+.token.attr-value {
+	color: #e6db74;
+}
+
+.token.keyword {
+	color: #66d9ef;
+}
+
+.token.regex,
+.token.important {
+	color: #fd971f;
+}
+
+.token.important,
+.token.bold {
+	font-weight: bold;
+}
+.token.italic {
+	font-style: italic;
+}
+
+.token.entity {
+	cursor: help;
+}
+
+pre.line-numbers {
+	position: relative;
+	padding-left: 3.8em;
+	counter-reset: linenumber;
+}
+
+pre.line-numbers > code {
+	position: relative;
+}
+
+.line-numbers .line-numbers-rows {
+	position: absolute;
+	pointer-events: none;
+	top: 0;
+	font-size: 100%;
+	left: -3.8em;
+	width: 3em; /* works for line-numbers below 1000 lines */
+	letter-spacing: -1px;
+	border-right: 1px solid #999;
+
+	-webkit-user-select: none;
+	-moz-user-select: none;
+	-ms-user-select: none;
+	user-select: none;
+
+}
+
+	.line-numbers-rows > span {
+		pointer-events: none;
+		display: block;
+		counter-increment: linenumber;
+	}
+
+		.line-numbers-rows > span:before {
+			content: counter(linenumber);
+			color: #999;
+			display: block;
+			padding-right: 0.8em;
+			text-align: right;
+		}