first commit

history_diff.php

@@ -0,0 +1,67 @@
+<?php
+
+    require_once('../../config.php');
+    require_once('lib.php');
+    
+    $id = optional_param('id', 0, PARAM_INT);     // programming ID
+    $s1 = required_param('s1', PARAM_INT);
+    $s2 = required_param('s2', PARAM_INT);
+
+    if ($id) {
+        if (! $cm = get_coursemodule_from_id('programming', $id)) {
+            error('Course Module ID was incorrect');
+        }
+    
+        if (! $course = $DB->get_record('course', array('id' => $cm->course))) {
+            error('Course is misconfigured');
+        }
+    
+        if (! $programming = $DB->get_record('programming', array('id' => $cm->instance))) {
+            error('Course module is incorrect');
+        }
+    }
+
+    require_login($course->id, true, $cm);
+    $context = context_module::instance($cm->id);
+
+    require_capability('mod/programming:viewhistory', $context);
+
+    $submit1 = $DB->get_record('programming_submits', array('id' => $s1));
+    $submit2 = $DB->get_record('programming_submits', array('id' => $s2));
+
+    if ($submit1->userid != $USER->id || $submit2->userid != $USER->id) {
+        require_capability('mod/programming:viewotherprogram', $context);
+    }
+
+/// Print the page header
+    $pagename = get_string('submithistory', 'programming');
+    $CFG->scripts[] = '/mod/programming/js/dp/shCore.js';
+    $CFG->scripts[] = '/mod/programming/js/dp/shBrushCSharp.js';
+    $CFG->stylesheets[] = '/mod/programming/js/dp/SyntaxHighlighter.css';
+    include_once('pageheader.php');
+
+/// Print tabs
+    $currenttab = 'history';
+    include_once('tabs.php');
+
+/// Print page content
+
+    ini_set("include_path", ".:./lib");
+    require_once('Text/Diff.php');
+    require_once('text_diff_render_html.php');
+
+    $lines1 = explode("\n", $submit1->code);
+    $lines2 = explode("\n", $submit2->code);
+
+    $diff = new Text_Diff('auto', array($lines1, $lines2));
+
+    $renderer = new Text_Diff_Renderer_html();
+
+    echo '<pre>';
+    echo $renderer->render($diff);
+    echo '</pre>';
+
+/// Finish the page
+    $OUTPUT->footer($course);
+
+?>