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[yaffs-website] / vendor / symfony / http-foundation / File / MimeType / FileBinaryMimeTypeGuesser.php

diff --git a/vendor/symfony/http-foundation/File/MimeType/FileBinaryMimeTypeGuesser.php b/vendor/symfony/http-foundation/File/MimeType/FileBinaryMimeTypeGuesser.php
new file mode 100644 (file)
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+++ b/vendor/symfony/http-foundation/File/MimeType/FileBinaryMimeTypeGuesser.php
@@ -0,0 +1,87 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpFoundation\File\MimeType;
+
+use Symfony\Component\HttpFoundation\File\Exception\FileNotFoundException;
+use Symfony\Component\HttpFoundation\File\Exception\AccessDeniedException;
+
+/**
+ * Guesses the mime type with the binary "file" (only available on *nix).
+ *
+ * @author Bernhard Schussek <bschussek@gmail.com>
+ */
+class FileBinaryMimeTypeGuesser implements MimeTypeGuesserInterface
+{
+    private $cmd;
+
+    /**
+     * Constructor.
+     *
+     * The $cmd pattern must contain a "%s" string that will be replaced
+     * with the file name to guess.
+     *
+     * The command output must start with the mime type of the file.
+     *
+     * @param string $cmd The command to run to get the mime type of a file
+     */
+    public function __construct($cmd = 'file -b --mime %s 2>/dev/null')
+    {
+        $this->cmd = $cmd;
+    }
+
+    /**
+     * Returns whether this guesser is supported on the current OS.
+     *
+     * @return bool
+     */
+    public static function isSupported()
+    {
+        return '\\' !== DIRECTORY_SEPARATOR && function_exists('passthru') && function_exists('escapeshellarg');
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    public function guess($path)
+    {
+        if (!is_file($path)) {
+            throw new FileNotFoundException($path);
+        }
+
+        if (!is_readable($path)) {
+            throw new AccessDeniedException($path);
+        }
+
+        if (!self::isSupported()) {
+            return;
+        }
+
+        ob_start();
+
+        // need to use --mime instead of -i. see #6641
+        passthru(sprintf($this->cmd, escapeshellarg($path)), $return);
+        if ($return > 0) {
+            ob_end_clean();
+
+            return;
+        }
+
+        $type = trim(ob_get_clean());
+
+        if (!preg_match('#^([a-z0-9\-]+/[a-z0-9\-\.]+)#i', $type, $match)) {
+            // it's not a type, but an error message
+            return;
+        }
+
+        return $match[1];
+    }
+}