2 files changed, 31 insertions, 7 deletions
diff --git a/include/cru/common/io/Stream.h b/include/cru/common/io/Stream.h
index f833b0b9..2388874e 100644
--- a/include/cru/common/io/Stream.h
+++ b/include/cru/common/io/Stream.h
@@ -9,6 +9,27 @@
 #include <vector>
 
 namespace cru::io {
+class CRU_BASE_API StreamOperationNotSupportedException : public Exception {
+ public:
+  explicit StreamOperationNotSupportedException(String operation);
+
+  CRU_DEFAULT_COPY(StreamOperationNotSupportedException)
+  CRU_DEFAULT_MOVE(StreamOperationNotSupportedException)
+
+  CRU_DEFAULT_DESTRUCTOR(StreamOperationNotSupportedException)
+
+ public:
+  String GetOperation() const { return operation_; }
+
+ public:
+  static void CheckSeek(bool seekable);
+  static void CheckRead(bool readable);
+  static void CheckWrite(bool writable);
+
+ private:
+  String operation_;
+};
+
 class CRU_BASE_API StreamAlreadyClosedException : public Exception {
  public:
   using Exception::Exception;
@@ -17,6 +38,8 @@ class CRU_BASE_API StreamAlreadyClosedException : public Exception {
   CRU_DEFAULT_MOVE(StreamAlreadyClosedException)
 
   CRU_DEFAULT_DESTRUCTOR(StreamAlreadyClosedException)
+
+  static void Check(bool closed);
 };
 
 class CRU_BASE_API Stream : public Object {
diff --git a/include/cru/common/platform/unix/UnixFileStream.h b/include/cru/common/platform/unix/UnixFileStream.h
index 0c8ef340..bf13358b 100644
--- a/include/cru/common/platform/unix/UnixFileStream.h
+++ b/include/cru/common/platform/unix/UnixFileStream.h
@@ -4,14 +4,14 @@
 
 #ifdef CRU_PLATFORM_UNIX
 
-#include "../../String.h"
-#include "../../io/OpenFileFlag.h"
 #include "../../io/Stream.h"
 
 namespace cru::platform::unix {
 class UnixFileStream : public io::Stream {
  public:
-  UnixFileStream(String path, io::OpenFileFlag flags);
+  UnixFileStream(const char* path, int oflag);
+  UnixFileStream(int fd, bool can_seek, bool can_read, bool can_write,
+                 bool auto_close);
 
   CRU_DELETE_COPY(UnixFileStream)
   CRU_DELETE_MOVE(UnixFileStream)
@@ -36,10 +36,11 @@ class UnixFileStream : public io::Stream {
   void CheckClosed();
 
  private:
-  String path_;
-  io::OpenFileFlag flags_;
-  int file_descriptor_;
-  bool closed_ = false;
+  int file_descriptor_;  // -1 for no file descriptor
+  bool can_seek_;
+  bool can_read_;
+  bool can_write_;
+  bool auto_close_;
 };
 }  // namespace cru::platform::unix