Initial commit

application/Espo/Core/Utils/Resource/FileReader.php

@@ -0,0 +1,115 @@
+<?php
+/************************************************************************
+ * This file is part of EspoCRM.
+ *
+ * EspoCRM – Open Source CRM application.
+ * Copyright (C) 2014-2025 EspoCRM, Inc.
+ * Website: https://www.espocrm.com
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ * The interactive user interfaces in modified source and object code versions
+ * of this program must display Appropriate Legal Notices, as required under
+ * Section 5 of the GNU Affero General Public License version 3.
+ *
+ * In accordance with Section 7(b) of the GNU Affero General Public License version 3,
+ * these Appropriate Legal Notices must retain the display of the "EspoCRM" word.
+ ************************************************************************/
+
+namespace Espo\Core\Utils\Resource;
+
+use Espo\Core\Utils\File\Manager as FileManager;
+use Espo\Core\Utils\Metadata;
+use Espo\Core\Utils\Resource\FileReader\Params;
+use RuntimeException;
+
+/**
+ * Reads resource files.
+ */
+class FileReader
+{
+    public function __construct(
+        private FileManager $fileManager,
+        private Metadata $metadata,
+        private PathProvider $pathProvider
+    ) {}
+
+    /**
+     * Read a resource file. Returns NULL if the file does not exist.
+     *
+     * @throws RuntimeException If the resource does not exist.
+     */
+    public function read(string $path, Params $params): string
+    {
+        $exactPath = $this->findExactPath($path, $params);
+
+        if (!$exactPath) {
+            throw new RuntimeException("Resource file '$path' does not exist.");
+        }
+
+        return $this->fileManager->getContents($exactPath);
+    }
+
+    /**
+     * Whether a resource file exists.
+     */
+    public function exists(string $path, Params $params): bool
+    {
+        return $this->findExactPath($path, $params) !== null;
+    }
+
+    private function findExactPath(string $path, Params $params): ?string
+    {
+        $customPath = $this->pathProvider->getCustom() . $path;
+
+        if ($this->fileManager->isFile($customPath)) {
+            return $customPath;
+        }
+
+        $moduleName = null;
+
+        if ($params->getScope()) {
+            $moduleName = $this->metadata->getScopeModuleName($params->getScope());
+        }
+
+        if ($moduleName) {
+            $modulePath = $this->buildModulePath($path, $moduleName);
+
+            if ($this->fileManager->isFile($modulePath)) {
+                return $modulePath;
+            }
+        }
+
+        if ($params->getModuleName()) {
+            $modulePath = $this->buildModulePath($path, $params->getModuleName());
+
+            if ($this->fileManager->isFile($modulePath)) {
+                return $modulePath;
+            }
+        }
+
+        $corePath = $this->pathProvider->getCore() . $path;
+
+        if ($this->fileManager->isFile($corePath)) {
+            return $corePath;
+        }
+
+        return null;
+    }
+
+    private function buildModulePath(string $path, string $moduleName): string
+    {
+        return $this->pathProvider->getModule($moduleName) . $path;
+    }
+}