OsFile implemented in win

src/os/win/OsFile.cpp

@@ -0,0 +1,134 @@
+/*
+Copyright (c) 2013 Daniele Bartolini, Michele Rossi
+Copyright (c) 2012 Daniele Bartolini, Simone Boscaratto
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#pragma once
+
+#include "OsFile.h"
+
+
+namespace crown
+{
+
+OsFile::OsFile(const char* path, FileOpenMode mode)
+{
+	m_file_handle = CreateFile(path,
+							   mode == FOM_READ ? GENERIC_READ : GENERIC_WRITE,
+							   FILE_SHARE_READ | FILE_SHARE_WRITE,
+							   NULL,
+							   OPEN_EXISTING,
+        					   FILE_ATTRIBUTE_NORMAL,
+        					   NULL);
+
+	CE_ASSERT(m_file_handle != NULL, "Unable to open file: %s", path);
+
+	m_mode = mode;
+}
+
+OsFile::~OsFile()
+{
+	close();
+}
+
+void OsFile::close()
+{
+	if (!CloseHandle(m_file_handle))
+	{
+		CE_ASSERT(false, "Unable to close file\n");
+	}
+}
+
+bool OsFile::is_open() const
+{
+	return m_file_handle != NULL;
+}
+
+size_t OsFile::size() const
+{
+	LPDWORD size;
+
+	GetFileSize(m_file_handle, size);
+
+	return size;
+}
+
+FileOpenMode OsFile::mode()
+{
+	return m_mode;
+}
+
+size_t OsFile::read(void* data, size_t size)
+{
+	bool read = ReadFile(m_file_handle, data, size, NULL, NULL))
+	
+	CE_ASSERT(read, "Cannot read from file\n");
+
+	return size;
+}
+
+size_t OsFile::write(const void* data, size_t size)
+{
+	bool write = WriteFile(m_file_handle, data, size, NULL, NULL))
+	
+	CE_ASSERT(write, "Cannot read from file\n");		
+
+	return size;
+}
+
+void OsFile::seek(size_t position)
+{
+	DWORD seek_result = SetFilePointer(m_file_handle, (LONG) position, NULL, FILE_BEGIN);
+
+	CE_ASSERT(seek_result == 0, "Failed to seek");
+}
+
+void OsFile::seek_to_end()
+{
+	DWORD seek_result = SetFilePointer(m_file_handle, 0, NULL, FILE_END);
+
+	CE_ASSERT(seek_result == 0, "Failed to seek");
+}
+
+void OsFile::skip(size_t bytes)
+{
+	DWORD seek_result = SetFilePointer(m_file_handle, (LONG) bytes, NULL, FILE_CURRENT);
+
+	CE_ASSERT(seek_result == 0, "Failed to seek");
+}
+
+size_t OsFile::position() const
+{
+	DWORD position = SetFilePointer(m_file_handle, 0, NULL, FILE_CURRENT);
+
+	return position;
+}
+
+bool OsFile::eof() const
+{
+	return feof(m_file_handle) != 0;
+}
+
+} // namespace crown
+

src/os/win/OsFile.h

@@ -0,0 +1,89 @@
+/*
+Copyright (c) 2013 Daniele Bartolini, Michele Rossi
+Copyright (c) 2012 Daniele Bartolini, Simone Boscaratto
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#pragma once
+
+#include <cstdio>
+#include <windows.h>
+#include "Types.h"
+#include "File.h"
+
+namespace crown
+{
+
+/// Standard C file wrapper
+class OsFile
+{
+public:
+
+	/// Opens the file located at @a path with the given @a mode.
+							OsFile(const char* path, FileOpenMode mode);
+							~OsFile();
+
+	/// Closes the file.
+	void					close();
+
+	bool					is_open() const;
+
+	/// Return the size of the file in bytes.
+	size_t					size() const;
+
+	/// Returs the mode used to open the file.
+	FileOpenMode			mode();
+
+	/// Reads @a size bytes from the file and stores it into @a data.
+	/// Returns the number of bytes read.
+	size_t					read(void* data, size_t size);
+
+	/// Writes @a size bytes of data stored in @a data and returns the
+	/// number of bytes written.
+	size_t					write(const void* data, size_t size);
+
+	/// Moves the file pointer to the given @a position.
+	void					seek(size_t position);
+
+	/// Moves the file pointer to the end of the file.
+	void					seek_to_end();
+
+	/// Moves the file pointer @a bytes bytes ahead the current
+	/// file pointer position.
+	void					skip(size_t bytes);
+
+	/// Returns the position of the file pointer from the
+	/// start of the file in bytes.
+	size_t					position() const;
+
+	/// Returns whether the file pointer is at the end of the file.
+	bool					eof() const;
+
+private:
+
+	FILE*					m_file_handle;
+	FileOpenMode			m_mode;
+};
+
+} // namespace crown
+