Add CFileStream. Move ErrnoException.

4 files changed, 76 insertions, 16 deletions

diff --git a/include/cru/common/Exception.h b/include/cru/common/Exception.h
index 365d2064..6f458d35 100644
--- a/include/cru/common/Exception.h
+++ b/include/cru/common/Exception.h
@@ -29,4 +29,21 @@ class CRU_BASE_API TextEncodeException : public Exception {
  public:
   using Exception::Exception;
 };
+
+class ErrnoException : public Exception {
+ public:
+  ErrnoException() : ErrnoException(String{}) {}
+  explicit ErrnoException(const String& message);
+  ErrnoException(const String& message, int errno_code);
+
+  CRU_DELETE_COPY(ErrnoException)
+  CRU_DELETE_MOVE(ErrnoException)
+
+  ~ErrnoException() override = default;
+
+  int GetErrnoCode() const { return errno_code_; }
+
+ private:
+  int errno_code_;
+};
 }  // namespace cru
diff --git a/include/cru/common/io/CFileStream.h b/include/cru/common/io/CFileStream.h
new file mode 100644
index 00000000..65de2ac7
--- /dev/null
+++ b/include/cru/common/io/CFileStream.h
@@ -0,0 +1,46 @@
+#pragma once
+
+#include "Stream.h"
+
+#include <cstdio>
+
+namespace cru::io {
+class CRU_BASE_API CFileStream : public Stream {
+ public:
+  CFileStream(const char* path, const char* mode);
+  explicit CFileStream(std::FILE* file, bool readable = true,
+                       bool writable = true, bool auto_close = true);
+
+  CRU_DELETE_COPY(CFileStream)
+  CRU_DELETE_MOVE(CFileStream)
+
+  ~CFileStream() override;
+
+ public:
+  bool CanSeek() override;
+  Index Seek(Index offset, SeekOrigin origin = SeekOrigin::Current) override;
+  Index Tell() override;
+  void Rewind() override;
+
+  bool CanRead() override;
+  Index Read(std::byte* buffer, Index offset, Index size) override;
+
+  bool CanWrite() override;
+  Index Write(const std::byte* buffer, Index offset, Index size) override;
+
+  void Flush() override;
+
+  void Close() override;
+
+  std::FILE* GetHandle() const;
+
+ private:
+  void CheckClosed();
+
+ private:
+  std::FILE* file_;
+  bool readable_;
+  bool writable_;
+  bool auto_close_;
+};
+}  // namespace cru::io
diff --git a/include/cru/common/io/Stream.h b/include/cru/common/io/Stream.h
index 66be4468..f833b0b9 100644
--- a/include/cru/common/io/Stream.h
+++ b/include/cru/common/io/Stream.h
@@ -2,12 +2,23 @@
 
 #include "../Base.h"
 
+#include "../Exception.h"
 #include "../String.h"
 
 #include <cstddef>
 #include <vector>
 
 namespace cru::io {
+class CRU_BASE_API StreamAlreadyClosedException : public Exception {
+ public:
+  using Exception::Exception;
+
+  CRU_DEFAULT_COPY(StreamAlreadyClosedException)
+  CRU_DEFAULT_MOVE(StreamAlreadyClosedException)
+
+  CRU_DEFAULT_DESTRUCTOR(StreamAlreadyClosedException)
+};
+
 class CRU_BASE_API Stream : public Object {
  public:
   enum class SeekOrigin { Current, Begin, End };
diff --git a/include/cru/common/platform/unix/ErrnoException.h b/include/cru/common/platform/unix/ErrnoException.h
index 00e1864b..97edcc78 100644
--- a/include/cru/common/platform/unix/ErrnoException.h
+++ b/include/cru/common/platform/unix/ErrnoException.h
@@ -7,22 +7,8 @@
 #include "../Exception.h"
 
 namespace cru::platform::unix {
-class ErrnoException : public PlatformException {
- public:
-  ErrnoException() : ErrnoException(String{}) {}
-  explicit ErrnoException(const String& message);
-  ErrnoException(const String& message, int errno_code);
-
-  CRU_DELETE_COPY(ErrnoException)
-  CRU_DELETE_MOVE(ErrnoException)
-
-  ~ErrnoException() override = default;
-
-  int GetErrnoCode() const { return errno_code_; }
-
- private:
-  int errno_code_;
-};
+// Moved to Exception.h
+using ErrnoException = cru::ErrnoException;
 }  // namespace cru::platform::unix
 
 #endif