cleaner conversion of errors to exceptions

src/Exception/Exception.php

@@ -16,4 +16,23 @@ class Exception extends \Exception {
 
 		return new Exception($message, $error);
 	}
+
+	/**
+	 * @param array $exceptionMap
+	 * @param mixed $error
+	 * @param string $path
+	 * @return Exception
+	 */
+	static public function fromMap(array $exceptionMap, $error, $path) {
+		if (isset($exceptionMap[$error])) {
+			$exceptionClass = $exceptionMap[$error];
+			if (is_numeric($error)) {
+				return new $exceptionClass($path, $error);
+			} else {
+				return new $exceptionClass($path);
+			}
+		} else {
+			return Exception::unknown($path, $error);
+		}
+	}
 }

src/NativeState.php

@@ -7,16 +7,7 @@
 
 namespace Icewind\SMB;
 
-use Icewind\SMB\Exception\AlreadyExistsException;
-use Icewind\SMB\Exception\ConnectionRefusedException;
 use Icewind\SMB\Exception\Exception;
-use Icewind\SMB\Exception\ForbiddenException;
-use Icewind\SMB\Exception\HostDownException;
-use Icewind\SMB\Exception\InvalidTypeException;
-use Icewind\SMB\Exception\NoRouteToHostException;
-use Icewind\SMB\Exception\NotEmptyException;
-use Icewind\SMB\Exception\NotFoundException;
-use Icewind\SMB\Exception\TimedOutException;
 
 /**
  * Low level wrapper for libsmbclient-php for error handling
@@ -31,36 +22,28 @@ class NativeState {
 
 	protected $connected = false;
 
+	// todo replace with static once <5.6 support is dropped
+	// see error.h
+	private static $exceptionMap = [
+		1   => '\Icewind\SMB\Exception\ForbiddenException',
+		2   => '\Icewind\SMB\Exception\NotFoundException',
+		13  => '\Icewind\SMB\Exception\ForbiddenException',
+		17  => '\Icewind\SMB\Exception\AlreadyExistsException',
+		20  => '\Icewind\SMB\Exception\InvalidTypeException',
+		21  => '\Icewind\SMB\Exception\InvalidTypeException',
+		39  => '\Icewind\SMB\Exception\NotEmptyException',
+		110 => '\Icewind\SMB\Exception\TimedOutException',
+		111 => '\Icewind\SMB\Exception\ConnectionRefusedException',
+		112 => '\Icewind\SMB\Exception\HostDownException',
+		113 => '\Icewind\SMB\Exception\NoRouteToHostException'
+	];
+
 	protected function handleError($path) {
 		$error = smbclient_state_errno($this->state);
-		switch ($error) {
-			// see error.h
-			case 0;
+		if ($error === 0) {
 			return;
-			case 1:
-			case 13:
-				throw new ForbiddenException($path, $error);
-			case 2:
-				throw new NotFoundException($path, $error);
-			case 17:
-				throw new AlreadyExistsException($path, $error);
-			case 20:
-				throw new InvalidTypeException($path, $error);
-			case 21:
-				throw new InvalidTypeException($path, $error);
-			case 39:
-				throw new NotEmptyException($path, $error);
-			case 110:
-				throw new TimedOutException($path, $error);
-			case 111:
-				throw new ConnectionRefusedException($path, $error);
-			case 112:
-				throw new HostDownException($path, $error);
-			case 113:
-				throw new NoRouteToHostException($path, $error);
-			default:
-				throw Exception::unknown($path, $error);
 		}
+		throw Exception::fromMap(self::$exceptionMap, $error, $path);
 	}
 
 	protected function testResult($result, $uri) {

src/Parser.php

@@ -27,6 +27,20 @@ class Parser {
 	 */
 	protected $timeZoneProvider;
 
+	// todo replace with static once <5.6 support is dropped
+	// see error.h
+	private static $exceptionMap = [
+		ErrorCodes::PathNotFound      => '\Icewind\SMB\Exception\NotFoundException',
+		ErrorCodes::ObjectNotFound    => '\Icewind\SMB\Exception\NotFoundException',
+		ErrorCodes::NoSuchFile        => '\Icewind\SMB\Exception\NotFoundException',
+		ErrorCodes::NameCollision     => '\Icewind\SMB\Exception\AlreadyExistsException',
+		ErrorCodes::AccessDenied      => '\Icewind\SMB\Exception\AccessDeniedException',
+		ErrorCodes::DirectoryNotEmpty => '\Icewind\SMB\Exception\NotEmptyException',
+		ErrorCodes::FileIsADirectory  => '\Icewind\SMB\Exception\InvalidTypeException',
+		ErrorCodes::NotADirectory     => '\Icewind\SMB\Exception\InvalidTypeException',
+		ErrorCodes::SharingViolation  => '\Icewind\SMB\Exception\FileInUseException'
+	];
+
 	/**
 	 * @param \Icewind\SMB\TimeZoneProvider $timeZoneProvider
 	 */
@@ -55,25 +69,7 @@ class Parser {
 			throw new InvalidResourceException('Failed opening local file "' . $localPath . '" for writing');
 		}
 
-		switch ($error) {
-			case ErrorCodes::PathNotFound:
-			case ErrorCodes::ObjectNotFound:
-			case ErrorCodes::NoSuchFile:
-				throw new NotFoundException($path);
-			case ErrorCodes::NameCollision:
-				throw new AlreadyExistsException($path);
-			case ErrorCodes::AccessDenied:
-				throw new AccessDeniedException($path);
-			case ErrorCodes::DirectoryNotEmpty:
-				throw new NotEmptyException($path);
-			case ErrorCodes::FileIsADirectory:
-			case ErrorCodes::NotADirectory:
-				throw new InvalidTypeException($path);
-			case ErrorCodes::SharingViolation:
-				throw new FileInUseException($path);
-			default:
-				throw Exception::unknown($path, $error);
-		}
+		throw Exception::fromMap(self::$exceptionMap, $error, $path);
 	}
 
 	/**
@@ -135,7 +131,7 @@ class Parser {
 		return [
 			'mtime' => strtotime($data['write_time']),
 			'mode'  => hexdec(substr($data['attributes'], strpos($data['attributes'], '('), -1)),
-			'size' => intval(explode(' ', $data['stream'])[1])
+			'size'  => isset($data['stream']) ? intval(explode(' ', $data['stream'])[1]) : 0
 		];
 	}