Added Source class to parse HandBrake output

Added a Source class which executes HandBrake -t 0 to list the available titles and streams in a given source.
Added a placeholder on the source-details page to display HandBrake output

HandBrakeCluster/Rips/Source.class.php

@@ -0,0 +1,43 @@
+<?php
+
+class HandBrakeCluster_Rips_Source {
+
+    protected $source;
+    protected $output;
+    
+    public function __construct($source) {
+        $this->source = $source;
+
+        $this->scan();
+    }
+    
+    protected function scan() {
+        $source_shell = escapeshellarg($this->source);
+        $handbrake_cmd = "HandBrakeCLI -i {$source_shell} -t 0"; 
+        
+        $handbrake_pid = popen($handbrake_cmd, 'r');
+        $handbrake_output = fread($handbrake_pid, 1024);
+        while (!feof($handbrake_pid)) {
+            $handbrake_output = fread($handbrake_pid, 1024);
+        }
+        pclose($handbrake_pid);
+        
+        
+        // Process the output
+        $lines = explode("\n", $handbrake_output);
+        foreach ($lines as $line) {
+            // Skip any line that doesn't begin with a + (with optional leading whitespace)
+            if ( ! preg_match('/\s*\+/', $line)) {
+                continue;
+            }
+            
+            $this->output .= $line;
+        }
+    }
+    
+    public function output() {
+        return $output;
+    }
+};
+
+?>