add composer's vendor directory

vendor/fguillot/picofeed/lib/PicoFeed/Client/HttpHeaders.php

@@ -0,0 +1,79 @@
+<?php
+
+namespace PicoFeed\Client;
+
+use ArrayAccess;
+use PicoFeed\Logging\Logger;
+
+/**
+ * Class to handle HTTP headers case insensitivity.
+ *
+ * @author  Bernhard Posselt
+ * @author  Frederic Guillot
+ */
+class HttpHeaders implements ArrayAccess
+{
+    private $headers = array();
+
+    public function __construct(array $headers)
+    {
+        foreach ($headers as $key => $value) {
+            $this->headers[strtolower($key)] = $value;
+        }
+    }
+
+    public function offsetGet($offset)
+    {
+        return $this->headers[strtolower($offset)];
+    }
+
+    public function offsetSet($offset, $value)
+    {
+        $this->headers[strtolower($offset)] = $value;
+    }
+
+    public function offsetExists($offset)
+    {
+        return isset($this->headers[strtolower($offset)]);
+    }
+
+    public function offsetUnset($offset)
+    {
+        unset($this->headers[strtolower($offset)]);
+    }
+
+    /**
+     * Parse HTTP headers.
+     *
+     * @static
+     *
+     * @param array $lines List of headers
+     *
+     * @return array
+     */
+    public static function parse(array $lines)
+    {
+        $status = 0;
+        $headers = array();
+
+        foreach ($lines as $line) {
+            if (strpos($line, 'HTTP/1') === 0) {
+                $headers = array();
+                $status = (int) substr($line, 9, 3);
+            } elseif (strpos($line, ': ') !== false) {
+                list($name, $value) = explode(': ', $line);
+                if ($value) {
+                    $headers[trim($name)] = trim($value);
+                }
+            }
+        }
+
+        Logger::setMessage(get_called_class().' HTTP status code: '.$status);
+
+        foreach ($headers as $name => $value) {
+            Logger::setMessage(get_called_class().' HTTP header: '.$name.' => '.$value);
+        }
+
+        return array($status, new self($headers));
+    }
+}