1 files changed, 74 insertions, 0 deletions
diff --git a/zen/file_io.h b/zen/file_io.h
new file mode 100644
index 00000000..26964ae8
--- /dev/null
+++ b/zen/file_io.h
@@ -0,0 +1,74 @@
+// **************************************************************************
+// * This file is part of the FreeFileSync project. It is distributed under *
+// * GNU General Public License: http://www.gnu.org/licenses/gpl.html       *
+// * Copyright (C) 2008-2011 ZenJu (zhnmju123 AT gmx.de)                    *
+// **************************************************************************
+
+#ifndef FILEIO_H_INCLUDED
+#define FILEIO_H_INCLUDED
+
+#ifdef FFS_WIN
+#include "win.h" //includes "windows.h"
+
+#elif defined FFS_LINUX
+#include <cstdio>
+#endif
+
+#include "string.h"
+#include "file_error.h"
+
+namespace zen
+{
+//file IO optimized for sequential read/write accesses + better error reporting + long path support (following symlinks)
+
+#ifdef FFS_WIN
+typedef HANDLE FileHandle;
+#elif defined FFS_LINUX
+typedef FILE* FileHandle;
+#endif
+
+class FileInput
+{
+public:
+    FileInput(const Zstring& filename);                    //throw FileError, ErrorNotExisting
+    FileInput(FileHandle handle, const Zstring& filename); //takes ownership!
+    ~FileInput();
+
+    size_t read(void* buffer, size_t bytesToRead); //throw FileError; returns actual number of bytes read
+    bool eof(); //end of file reached
+
+private:
+    FileInput(const FileInput&);
+    FileInput& operator=(const FileInput&);
+
+    bool eofReached;
+    FileHandle fileHandle;
+    const Zstring filename_;
+};
+
+
+class  FileOutput
+{
+public:
+    enum AccessFlag
+    {
+        ACC_OVERWRITE,
+        ACC_CREATE_NEW
+    };
+    FileOutput(const Zstring& filename, AccessFlag access); //throw FileError, ErrorTargetPathMissing, ErrorTargetExisting
+    FileOutput(FileHandle handle, const Zstring& filename); //takes ownership!
+    ~FileOutput();
+
+    void write(const void* buffer, size_t bytesToWrite); //throw FileError
+
+private:
+    FileOutput(const FileOutput&);
+    FileOutput& operator=(const FileOutput&);
+
+    FileHandle fileHandle;
+    const Zstring filename_;
+};
+
+}
+
+#endif // FILEIO_H_INCLUDED