Completed reference implementation, added tests

1 files changed, 41 insertions, 0 deletions

diff --git a/src/Loader/FileLoader.php b/src/Loader/FileLoader.php
new file mode 100644
index 0000000..0702a53
--- /dev/null
+++ b/src/Loader/FileLoader.php
@@ -0,0 +1,41 @@
+<?php
+declare(strict_types=1);
+
+/**
+ * @author: Alexander Kiryukhin <alexander@kiryukhin.su>
+ * @license: MIT
+ */
+
+namespace NeonXP\Dotenv\Loader;
+
+use NeonXP\Dotenv\Exception\RuntimeException;
+
+/**
+ * Class FileLoader
+ * @package NeonXP\Dotenv\Loader
+ */
+class FileLoader implements LoaderInterface
+{
+    const COMMENT_LINE_REGEX = '/^\s*#/';
+
+    /**
+     * @inheritdoc
+     * @param string $filePath
+     * @return array
+     * @throws RuntimeException
+     */
+    public function load(string $filePath = '.env'): array
+    {
+        if (!file_exists($filePath)) {
+            throw new RuntimeException("There is no {$filePath} file!");
+        }
+        $lines = file($filePath);
+        $lines = array_map('trim', $lines);
+        $lines = array_filter($lines, function (string $line) {
+            return trim($line) && !preg_match(self::COMMENT_LINE_REGEX, $line);
+        });
+        $lines = array_values($lines);
+
+        return $lines;
+    }
+}
\ No newline at end of file