feature: diff in the web interface for duplicates pastes.

var/www/modules/showpaste/Flask_showpaste.py

@@ -7,7 +7,8 @@
 import redis
 import json
 import flask
-from flask import Flask, render_template, jsonify, request, Blueprint
+from flask import Flask, render_template, jsonify, request, Blueprint, make_response
+import difflib
 
 import Paste
 
@@ -113,5 +114,21 @@ def getmoredata():
     to_return = p_content[max_preview_modal-1:]
     return to_return
 
+@showsavedpastes.route("/showDiff/")
+def showDiff():
+    s1 = request.args.get('s1', '')
+    s2 = request.args.get('s2', '')
+    p1 = Paste.Paste(s1)
+    p2 = Paste.Paste(s2)
+    maxLengthLine1 = p1.get_lines_info()[1]
+    maxLengthLine2 = p2.get_lines_info()[1]
+    if maxLengthLine1 > 100000 or maxLengthLine2 > 100000:
+        return "Can't make the difference as the lines are too long."
+    htmlD = difflib.HtmlDiff()
+    lines1 = p1.get_p_content().decode('utf8', 'ignore').splitlines()
+    lines2 = p2.get_p_content().decode('utf8', 'ignore').splitlines()
+    the_html = htmlD.make_file(lines1, lines2)
+    return the_html
+
 # ========= REGISTRATION =========
 app.register_blueprint(showsavedpastes)

var/www/modules/showpaste/templates/show_saved_paste.html

@@ -63,6 +63,7 @@
               <th>Paste info</th>
               <th>Date</th>
               <th>Path</th>
+              <th>Action</th>
           </tr>
           </thead>
           <tbody>
@@ -72,6 +73,7 @@
                   <td>Similarity: {{ simil_list[i] }}%</td>
                   <td>{{ date_list[i] }}</td>
                   <td><a target="_blank" href="{{ url_for('showsavedpastes.showsavedpaste') }}?paste={{ dup_path }}" id='dup_path'>{{ dup_path }}</a></td>
+                  <td><a target="_blank" href="{{ url_for('showsavedpastes.showDiff') }}?s1={{ request.args.get('paste') }}&s2={{ dup_path }}" class="fa fa-columns" title="Show differences"></a></td>
               </tr>
               {% set i = i + 1 %}
           {% endfor %}