From 3fe840b52e4d780587f14d06a46fcab523ba23c3 Mon Sep 17 00:00:00 2001
From: maheshgudi
Date: Mon, 20 Aug 2018 17:35:55 +0530
Subject: Add syntax highlight for code answers in answerpaper

---
 requirements/requirements-common.txt        |  1 +
 yaksh/templates/yaksh/grade_user.html       |  5 ++++-
 yaksh/templates/yaksh/user_data.html        |  4 +++-
 yaksh/templates/yaksh/view_answerpaper.html |  4 +++-
 yaksh/templatetags/custom_filters.py        | 13 +++++++++++++
 5 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/requirements/requirements-common.txt b/requirements/requirements-common.txt
index 484111e..ceb9060 100644
--- a/requirements/requirements-common.txt
+++ b/requirements/requirements-common.txt
@@ -8,3 +8,4 @@ selenium==2.53.6
 coverage
 ruamel.yaml==0.15.23
 markdown==2.6.9
+pygments==2.2.0
diff --git a/yaksh/templates/yaksh/grade_user.html b/yaksh/templates/yaksh/grade_user.html
index 2e5a403..bc9ed87 100644
--- a/yaksh/templates/yaksh/grade_user.html
+++ b/yaksh/templates/yaksh/grade_user.html
@@ -298,7 +298,9 @@ Status : <b style="color: red;"> Failed </b><br/>
         
         <div class="panel-body">
         {% if question.type == "code" %}
-        <pre><code>{{ ans.answer.answer.strip|safe }}</code></pre>
+        {% pygmentise_user_answer question.language ans.answer.answer.strip as user_answer %}
+          <style type="text/css">{{user_answer.1}}</style>
+          <pre><code>{{user_answer.0|safe}}</code></pre>
         {% elif question.type == "mcc"%}
         <div class="well well-sm">
         {% for testcases in question.get_test_cases %}
@@ -327,6 +329,7 @@ Status : <b style="color: red;"> Failed </b><br/>
         {% else %}
          <div class="well well-sm">
         {{ ans.answer.answer.strip|safe }}
+
         </div>
         {% endif %}
         </div>
diff --git a/yaksh/templates/yaksh/user_data.html b/yaksh/templates/yaksh/user_data.html
index 9449fcc..72397dc 100644
--- a/yaksh/templates/yaksh/user_data.html
+++ b/yaksh/templates/yaksh/user_data.html
@@ -233,7 +233,9 @@ User IP address: {{ paper.user_ip }}
     {{ answer.answer.answer.strip|safe }}
     </div>
     {% else %}
-    <pre><code>{{ answer.answer.answer.strip|safe }}</code></pre>
+    {% pygmentise_user_answer question.language answer.answer.answer.strip as user_answer %}
+    <style type="text/css">{{user_answer.1}}</style>
+    <pre><code>{{user_answer.0|safe}}</code></pre>
     {% endif %}
     </div>
     </div>
diff --git a/yaksh/templates/yaksh/view_answerpaper.html b/yaksh/templates/yaksh/view_answerpaper.html
index 8f3fad7..e3f7df4 100644
--- a/yaksh/templates/yaksh/view_answerpaper.html
+++ b/yaksh/templates/yaksh/view_answerpaper.html
@@ -229,7 +229,9 @@
         {% endfor %}
         {% endwith %}
     <div class="panel-body">
-    <pre><code>{{ answer.answer.answer.strip }}</code></pre>
+    {% pygmentise_user_answer question.language answer.answer.answer.strip as user_answer %}
+    <style type="text/css">{{user_answer.1}}</style>
+    <pre><code>{{user_answer.0|safe}}</code></pre>
     </div>
     </div>
     {% endif %}
diff --git a/yaksh/templatetags/custom_filters.py b/yaksh/templatetags/custom_filters.py
index 056421f..2fdc1d2 100644
--- a/yaksh/templatetags/custom_filters.py
+++ b/yaksh/templatetags/custom_filters.py
@@ -6,6 +6,9 @@ try:
     from itertools import zip_longest
 except ImportError:
     from itertools import izip_longest as zip_longest
+from pygments import highlight
+from pygments.lexers import get_lexer_by_name
+from pygments.formatters import HtmlFormatter
 
 register = template.Library()
 
@@ -87,3 +90,13 @@ def get_answer_for_arrange_options(ans, question):
 @register.filter(name='replace_spaces')
 def replace_spaces(name):
     return name.replace(" ", "_")
+
+@register.simple_tag
+def pygmentise_user_answer(language, answer):
+    lexer = get_lexer_by_name(language, stripall=True)
+    formatter = HtmlFormatter(linenos="inline",
+                              cssclass="highlight",
+                              style="colorful")
+    style = formatter.get_style_defs('.highlight')
+    result = highlight(answer, lexer, formatter)
+    return result, style
-- 
cgit