Move source/Irrlicht/ to src/

src/CMemoryFile.cpp

@@ -0,0 +1,165 @@
+// Copyright (C) 2002-2012 Nikolaus Gebhardt
+// This file is part of the "Irrlicht Engine".
+// For conditions of distribution and use, see copyright notice in irrlicht.h
+
+#include "CMemoryFile.h"
+#include "irrString.h"
+
+namespace irr
+{
+namespace io
+{
+
+CMemoryReadFile::CMemoryReadFile(const void *memory, long len, const io::path &fileName, bool d) :
+		Buffer(memory), Len(len), Pos(0), Filename(fileName), deleteMemoryWhenDropped(d)
+{
+#ifdef _DEBUG
+	setDebugName("CMemoryReadFile");
+#endif
+}
+
+CMemoryReadFile::~CMemoryReadFile()
+{
+	if (deleteMemoryWhenDropped)
+		delete[] (c8 *)Buffer;
+}
+
+//! returns how much was read
+size_t CMemoryReadFile::read(void *buffer, size_t sizeToRead)
+{
+	long amount = static_cast<long>(sizeToRead);
+	if (Pos + amount > Len)
+		amount -= Pos + amount - Len;
+
+	if (amount <= 0)
+		return 0;
+
+	c8 *p = (c8 *)Buffer;
+	memcpy(buffer, p + Pos, amount);
+
+	Pos += amount;
+
+	return static_cast<size_t>(amount);
+}
+
+//! changes position in file, returns true if successful
+//! if relativeMovement==true, the pos is changed relative to current pos,
+//! otherwise from begin of file
+bool CMemoryReadFile::seek(long finalPos, bool relativeMovement)
+{
+	if (relativeMovement) {
+		if (Pos + finalPos < 0 || Pos + finalPos > Len)
+			return false;
+
+		Pos += finalPos;
+	} else {
+		if (finalPos < 0 || finalPos > Len)
+			return false;
+
+		Pos = finalPos;
+	}
+
+	return true;
+}
+
+//! returns size of file
+long CMemoryReadFile::getSize() const
+{
+	return Len;
+}
+
+//! returns where in the file we are.
+long CMemoryReadFile::getPos() const
+{
+	return Pos;
+}
+
+//! returns name of file
+const io::path &CMemoryReadFile::getFileName() const
+{
+	return Filename;
+}
+
+CMemoryWriteFile::CMemoryWriteFile(void *memory, long len, const io::path &fileName, bool d) :
+		Buffer(memory), Len(len), Pos(0), Filename(fileName), deleteMemoryWhenDropped(d)
+{
+#ifdef _DEBUG
+	setDebugName("CMemoryWriteFile");
+#endif
+}
+
+CMemoryWriteFile::~CMemoryWriteFile()
+{
+	if (deleteMemoryWhenDropped)
+		delete[] (c8 *)Buffer;
+}
+
+//! returns how much was written
+size_t CMemoryWriteFile::write(const void *buffer, size_t sizeToWrite)
+{
+	long amount = (long)sizeToWrite;
+	if (Pos + amount > Len)
+		amount -= Pos + amount - Len;
+
+	if (amount <= 0)
+		return 0;
+
+	c8 *p = (c8 *)Buffer;
+	memcpy(p + Pos, buffer, amount);
+
+	Pos += amount;
+
+	return (size_t)amount;
+}
+
+//! changes position in file, returns true if successful
+//! if relativeMovement==true, the pos is changed relative to current pos,
+//! otherwise from begin of file
+bool CMemoryWriteFile::seek(long finalPos, bool relativeMovement)
+{
+	if (relativeMovement) {
+		if (Pos + finalPos < 0 || Pos + finalPos > Len)
+			return false;
+
+		Pos += finalPos;
+	} else {
+		if (finalPos < 0 || finalPos > Len)
+			return false;
+
+		Pos = finalPos;
+	}
+
+	return true;
+}
+
+//! returns where in the file we are.
+long CMemoryWriteFile::getPos() const
+{
+	return Pos;
+}
+
+//! returns name of file
+const io::path &CMemoryWriteFile::getFileName() const
+{
+	return Filename;
+}
+
+bool CMemoryWriteFile::flush()
+{
+	return true; // no buffering, so nothing to do
+}
+
+IReadFile *createMemoryReadFile(const void *memory, long size, const io::path &fileName, bool deleteMemoryWhenDropped)
+{
+	CMemoryReadFile *file = new CMemoryReadFile(memory, size, fileName, deleteMemoryWhenDropped);
+	return file;
+}
+
+IWriteFile *createMemoryWriteFile(void *memory, long size, const io::path &fileName, bool deleteMemoryWhenDropped)
+{
+	CMemoryWriteFile *file = new CMemoryWriteFile(memory, size, fileName, deleteMemoryWhenDropped);
+	return file;
+}
+
+} // end namespace io
+} // end namespace irr