Add openssl version getter for Windows, test openssl

src/SPC/builder/traits/openssl.php

@@ -0,0 +1,38 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\builder\traits;
+
+use SPC\exception\RuntimeException;
+use SPC\store\FileSystem;
+use SPC\util\PkgConfigUtil;
+
+trait openssl
+{
+    public function getLibVersion(): ?string
+    {
+        // get openssl version from source directory
+        if (file_exists("{$this->source_dir}/VERSION.dat")) {
+            // parse as INI
+            $version = parse_ini_file("{$this->source_dir}/VERSION.dat");
+            if ($version !== false) {
+                return "{$version['MAJOR']}.{$version['MINOR']}.{$version['PATCH']}";
+            }
+        }
+        // get openssl version from pkg-config
+        if (PHP_OS_FAMILY !== 'Windows') {
+            try {
+                return PkgConfigUtil::getModuleVersion('openssl');
+            } catch (RuntimeException) {
+            }
+        }
+        // get openssl version from header openssl/opensslv.h
+        if (file_exists(BUILD_INCLUDE_PATH . '/openssl/opensslv.h')) {
+            if (preg_match('/OPENSSL_VERSION_STR "(.*)"/', FileSystem::readFile(BUILD_INCLUDE_PATH . '/openssl/opensslv.h'), $match)) {
+                return $match[1];
+            }
+        }
+        return null;
+    }
+}