From 97994051ad1135c7fe514006ff11db6f00528c14 Mon Sep 17 00:00:00 2001
From: David Garcia <deivid.garcia.garcia@gmail.com>
Date: Sun, 8 Oct 2017 11:57:04 -0300
Subject: [PATCH] Fix realpath() based logic for windows compatiblity.

---
 src/JsonSchema/Uri/UriResolver.php | 25 +++++++++++++++++++++++--
 1 file changed, 23 insertions(+), 2 deletions(-)

diff --git a/src/JsonSchema/Uri/UriResolver.php b/src/JsonSchema/Uri/UriResolver.php
index ced7a8da..eb133f82 100644
--- a/src/JsonSchema/Uri/UriResolver.php
+++ b/src/JsonSchema/Uri/UriResolver.php
@@ -71,6 +71,27 @@ public function generate(array $components)
         return $uri;
     }
 
+    /**
+     * Custom realpath implementation to
+     * make results consistent in Windows and *nix
+     * environments.
+     *
+     * @param string $path
+     *   The path being checked.
+     */
+    protected function realpath($path) 
+    {
+      $scheme = 'file://';
+      $scheme_length = strlen($scheme);
+      if (strcasecmp(substr($path, 0, $scheme_length), $scheme) === 0) {
+        // realpath on Windows will fail to properly expand
+        // paths with the file:// scheme.
+        $path = substr($path, $scheme_length, strlen($path) - $scheme_length);
+        return realpath($path);
+      }
+      return realpath($path);
+    }
+
     /**
      * {@inheritdoc}
      */
@@ -79,9 +100,9 @@ public function resolve($uri, $baseUri = null)
         // treat non-uri base as local file path
         if (!is_null($baseUri) && !filter_var($baseUri, \FILTER_VALIDATE_URL)) {
             if (is_file($baseUri)) {
-                $baseUri = 'file://' . realpath($baseUri);
+                $baseUri = 'file://' . $this->realpath($baseUri);
             } elseif (is_dir($baseUri)) {
-                $baseUri = 'file://' . realpath($baseUri) . '/';
+                $baseUri = 'file://' . $this->realpath($baseUri) . '/';
             } else {
                 $baseUri = 'file://' . getcwd() . '/' . $baseUri;
             }