Initial xentral_oss_20.3.c9ffacf

classes/Core/Installer/Psr4ClassNameResolver.php

@@ -0,0 +1,81 @@
+<?php
+
+namespace Xentral\Core\Installer;
+
+/**
+ * Resolves full-qualified class names (PSR-4) by file path
+ */
+final class Psr4ClassNameResolver
+{
+    /** @var array $prefixes Registered namespace prefixes */
+    private $prefixes = [];
+
+    /** @var array $excludes Excludes files */
+    private $excludes = [];
+
+    /**
+     * @param array $prefixes
+     */
+    public function __construct(array $prefixes = [])
+    {
+        foreach ($prefixes as $prefix => $fileDir) {
+            $this->addNamespace($prefix, $fileDir);
+        }
+    }
+
+    /**
+     * @example addNamespace('App\\', '/path/to/src')
+     *
+     * @param string $prefix  Namespace prefix, e.g. App\
+     * @param string $baseDir Absolute path to directory
+     *
+     * @return void
+     */
+    public function addNamespace($prefix, $baseDir)
+    {
+        // Normalize inputs
+        $prefix = trim($prefix, '\\') . '\\';
+        $baseDir = rtrim($baseDir, '/') . '/';
+
+        $this->prefixes[$prefix] = $baseDir;
+    }
+
+    /**
+     * @param string $filePath Absolute path to file
+     *
+     * @return void
+     */
+    public function excludeFile($filePath)
+    {
+        $this->excludes[] = $filePath;
+    }
+
+    /**
+     * @param string $filePath Absolute path to class file
+     *
+     * @return string|null Full-qualified class name
+     */
+    public function resolveClassName($filePath)
+    {
+        // .src.php are built by the Build-Server and are not needed for execution
+        if (strpos($filePath, '.src.php') !== false) {
+            return null;
+        }
+        if (in_array($filePath, $this->excludes, true)) {
+            return null;
+        }
+
+        foreach ($this->prefixes as $prefix => $baseDir) {
+            if (strpos($filePath, $baseDir) === 0) {
+                $offset = strlen($baseDir);
+                $relativePath = substr($filePath, $offset);
+                $relativePath = str_ireplace('.php', '', $relativePath);
+                $relativeNamespace = str_replace('/', '\\', $relativePath);
+
+                return $prefix . $relativeNamespace;
+            }
+        }
+
+        return null;
+    }
+}