From b32022cea2e25845f6d01c90833db822dadc5cd4 Mon Sep 17 00:00:00 2001
From: Erayd <steve@erayd.net>
Date: Thu, 5 Oct 2017 17:23:06 +1300
Subject: [PATCH] Don't add a `file://` prefix to URI that already have a
 scheme

Some URI types do not pass validation against \FILTER_VAR_URL (e.g.
phar://), but are still valid and still have a scheme. This patch
catches those situations via a simple regex.
---
 src/JsonSchema/Uri/UriResolver.php | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/JsonSchema/Uri/UriResolver.php b/src/JsonSchema/Uri/UriResolver.php
index ced7a8da..8ab6650e 100644
--- a/src/JsonSchema/Uri/UriResolver.php
+++ b/src/JsonSchema/Uri/UriResolver.php
@@ -77,7 +77,11 @@ public function generate(array $components)
     public function resolve($uri, $baseUri = null)
     {
         // treat non-uri base as local file path
-        if (!is_null($baseUri) && !filter_var($baseUri, \FILTER_VALIDATE_URL)) {
+        if (
+            !is_null($baseUri) &&
+            !filter_var($baseUri, \FILTER_VALIDATE_URL) &&
+            !preg_match('|^[^/]+://|u', $baseUri)
+        ) {
             if (is_file($baseUri)) {
                 $baseUri = 'file://' . realpath($baseUri);
             } elseif (is_dir($baseUri)) {