Move away from PECL extension

.editorconfig

@@ -0,0 +1,11 @@
+root = true
+
+[*]
+end_of_line = lf
+charset = utf-8
+indent_size = tab
+indent_style = tab
+insert_final_newline = true
+max_line_length = off
+trim_trailing_whitespace = true
+tab_width = 4

src/Exception/GpgBinaryNotFound.php

@@ -0,0 +1,21 @@
+<?php declare(strict_types=1);
+
+namespace PharIo\GnuPG\Exception;
+
+use RuntimeException;
+
+class GpgBinaryNotFound extends RuntimeException
+{
+    public static function inDefaultPath(): self
+    {
+        return new self('No gnupg binary found - please specify or install the pecl/gnupg extension.');
+    }
+
+    public static function inProvidedPath(string $path): self
+    {
+        return new self(sprintf(
+            'No gnupg binary found in %1$s - please check the location',
+            $path
+        ));
+    }
+}

src/Exception/GpgExtensionNotFound.php

@@ -0,0 +1,19 @@
+<?php declare(strict_types=1);
+
+namespace PharIo\GnuPG\Exception;
+
+use RuntimeException;
+use Throwable;
+
+class GpgExtensionNotFound extends RuntimeException
+{
+    public static function inPhp(): self
+    {
+        return new self('The pecl/GnuPG extension for PHP was not found. You might want to install it.');
+    }
+
+    public static function orBroken(Throwable $t): self
+    {
+        return new self('The pexl/GnuPG extension for PHP was found but an Exception was thrown when using it. You might want to check the installation.', null, $t);
+    }
+}

src/Factory.php

@@ -1,16 +1,18 @@
 <?php declare(strict_types = 1);
+
 namespace PharIo\GnuPG;
 
-use PharIo\Executor\Executor;
 use PharIo\FileSystem\Directory;
 use PharIo\FileSystem\Filename;
+use PharIo\GnuPG\Exception\GpgBinaryNotFound;
+use PharIo\GnuPG\Exception\GpgExtensionNotFound;
+use PharIo\GnuPG\GnuPG as GPG;
+use function extension_loaded;
+use function putenv;
+use function sys_get_temp_dir;
 
-/** @noinspection PhpComposerExtensionStubsInspection */
 class Factory {
 
-    /** @var Filename */
-    private $gpgBinary;
-
     /**
      * Factory constructor.
      *
@@ -20,49 +22,24 @@ public function __construct(Filename $gpgBinary = null) {
         $this->gpgBinary = $gpgBinary;
     }
 
-    public function createGnuPG(Directory $homeDirectory): \Gnupg {
-        if (\extension_loaded('gnupg')) {
-            \putenv('GNUPGHOME=' . $homeDirectory->asString());
-            $gpg = new \Gnupg();
-            $gpg->seterrormode(\Gnupg::ERROR_SILENT);
-
-            return $gpg;
+    public function createGnuPG(Directory $homeDirectory): GnuPG
+    {
+        putenv('GNUPGHOME=' . $homeDirectory->asString());
+        try {
+            return new GPG\Extension();
+        } catch (GpgExtensionNotFound $e) {
+            // Do nothing on purpose
         }
 
-        $gpg = new GnuPG(
-            new Executor(),
-            $this->getGPGBinaryPath(),
-            $this->getTempDirectory(),
-            $homeDirectory
-        );
-
-        if (!\class_exists('\Gnupg')) {
-            \class_alias(GnuPG::class, '\Gnupg');
-        }
-
-        /** @var \Gnupg $gpg */
-        return $gpg;
-    }
-
-    /**
-     * @throws Exception
-     */
-    private function getGPGBinaryPath(): Filename {
-        if ($this->gpgBinary === null) {
-            $which  = \stripos(\PHP_OS, 'WIN') === 0 ? 'where.exe' : 'which';
-            $result = \exec(\sprintf('%s %s', $which, 'gpg'), $output, $exitCode);
-
-            if ($exitCode !== 0) {
-                throw new Exception('No gnupg binary found - please specify or install the pecl/gnupg extension.');
-            }
-            $resultLines     = \explode("\n", $result, 2);
-            $this->gpgBinary = new Filename($resultLines[0]);
+        try {
+            return GPG\Binary::createwithPaths(
+                $this->gpgBinary->asString(),
+                sys_get_temp_dir(),
+                $homeDirectory->asString()
+            );
+        } catch (GpgBinaryNotFound $e) {
+            // Do nothing on purpose
         }
-
-        return $this->gpgBinary;
-    }
-
-    private function getTempDirectory(): Directory {
-        return new Directory(\sys_get_temp_dir());
+        return new GPG\NoGpgAvailable;
     }
 }