Fix baseUri scheme related error (#2288)

Since (#1931) and PHP 8, an error occurs when raml2html extracts baseUri scheme.

PHP Deprecated:  mb_strtoupper(): Passing null to parameter #1 ($string) of type string is deprecated in tools/raml2html/vendor/raml-org/raml-php-parser/src/ApiDefinition.php on line 813

Author: adriendupuis

tools/raml2html/composer.json

@@ -42,7 +42,8 @@
             "raml-org/raml-php-parser": {
                 "Array of scalars": "https://github.com/raml-org/raml-php-parser/commit/d2e58eac1705a8cf2be43ed3d482006e67e4ef2d.patch",
                 "No available type list in type not found exception": "https://github.com/raml-org/raml-php-parser/commit/d54af98b9bd6d2400bbdd1c186e9b86c2dd88c83.patch",
-                "Fix warnings and depreciations for PHP 8.1": "https://patch-diff.githubusercontent.com/raw/raml-org/raml-php-parser/pull/180.patch"
+                "Fix warnings and depreciations for PHP 8.1": "https://patch-diff.githubusercontent.com/raw/raml-org/raml-php-parser/pull/180.patch",
+                "Fix baseUri misuse": "patches/ApiDefinition.php.patch"
             }
         }
     }

tools/raml2html/patches/ApiDefinition.php.patch

@@ -0,0 +1,17 @@
+Index: tools/raml2html/vendor/raml-org/raml-php-parser/src/ApiDefinition.php
+IDEA additional info:
+Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
+<+>UTF-8
+===================================================================
+diff --git a/src/ApiDefinition.php b/src/ApiDefinition.php
+--- a/src/ApiDefinition.php
++++ b/src/ApiDefinition.php	(date 1707386266597)
+@@ -810,7 +810,7 @@
+
+     private function setProtocolsFromBaseUri(): void
+     {
+-        $schema = \mb_strtoupper(\parse_url($this->baseUri, PHP_URL_SCHEME));
++        $schema = \mb_strtoupper(\parse_url($this->baseUri, PHP_URL_SCHEME) ?? '');
+
+         $this->protocols = empty($schema) ? [self::PROTOCOL_HTTPS, self::PROTOCOL_HTTP] : [$schema];
+     }