Delete FileSubStream

src/core/streams/FileSubStream.cpp

@@ -1,209 +0,0 @@
-/*
-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.
-*/
-
-#include "FileSubStream.h"
-#include "Types.h"
-#include "Log.h"
-
-namespace crown
-{
-
-FileSubStream::FileSubStream(StreamOpenMode openMode, const Str& filename, size_t position, size_t length) :
-	Stream(openMode), mFile(0),
-	mSubPosition(position), mSubLength(length)
-{
-	//Takes ownership
-	
-	if (openMode != SOM_READ)
-		Log::E("FileSubStream accepts only SOM_READ as openMode.");
-
-	mFile = File::Open(filename.c_str(), FOM_READ);
-	size_t fileSize = mFile->GetSize();
-	if (position >= fileSize || position + length >= fileSize)
-		throw ArgumentException("Position and length parameters define a file subsection outside the file dimensions");
-	fseek(mFile->GetHandle(), position, SEEK_SET);
-}
-
-FileSubStream::~FileSubStream()
-{
-	delete mFile;
-	mFile = 0;
-}
-
-uint8_t FileSubStream::ReadByte()
-{
-	CheckValid();
-
-	uint8_t buffer;
-	
-	bool error = false;
-	
-	if (EndOfStream())
-		error = true;
-	else
-		error = fread(&buffer, 1, 1, mFile->GetHandle()) != 1;
-
-	if (error)
-	{
-		Log::E("Could not read from file.");
-		throw FileIOException("Could not read from file.");
-	}
-
-	return buffer;
-}
-
-void FileSubStream::ReadDataBlock(void* buffer, size_t size)
-{
-	CheckValid();
-
-	bool error = false;
-	
-	if (GetPosition() + size > GetSize())
-		error = true;
-	else
-		error = fread(buffer, size, 1, mFile->GetHandle()) != 1;
-
-	if (error)
-	{
-		Log::E("Could not read from file.");
-		throw FileIOException("Could not read from file.");
-	}
-}
-
-bool FileSubStream::CopyTo(Stream* stream, size_t size)
-{
-	CheckValid();
-
-	if (stream == 0)
-	{
-		return false;
-	}
-	
-	if (GetPosition() + size > GetSize())
-	{
-		Log::E("The given size goes beyond the end of file.");
-		return false;
-	}
-
-	const int32_t chunksize = 1024*1024;
-
-	char* buff = new char[chunksize];
-
-	size_t totReadBytes = 0;
-
-	while (size == 0 || totReadBytes < size)
-	{
-		int32_t readBytes;
-		readBytes = fread(buff, 1, chunksize, mFile->GetHandle());
-
-		if (readBytes < chunksize)
-		{
-			bool returnVal;
-
-			if (feof(mFile->GetHandle()))
-			{
-				if (readBytes != 0)
-				{
-					stream->WriteDataBlock(buff, readBytes);
-				}
-
-				returnVal = true;
-			}
-			else
-			{
-				returnVal = false;
-			}
-
-			delete[] buff;
-			return returnVal;
-		}
-
-		stream->WriteDataBlock(buff, readBytes);
-		totReadBytes += readBytes;
-	}
-
-	delete [] buff;
-	return true;
-}
-
-bool FileSubStream::EndOfStream() const
-{
-	return GetPosition() - mSubPosition == mSubLength;
-}
-
-void FileSubStream::WriteByte(uint8_t /*val*/)
-{
-	Log::E("Write operation on FileSubStream not supported.");
-	throw FileIOException("Write operation on FileSubStream not supported.");
-}
-
-void FileSubStream::WriteDataBlock(const void* /*buffer*/, size_t /*size*/)
-{
-	Log::E("Write operation on FileSubStream not supported.");
-	throw FileIOException("Write operation on FileSubStream not supported.");
-}
-
-void FileSubStream::Flush()
-{
-	CheckValid();
-	fflush(mFile->GetHandle());
-}
-
-void FileSubStream::Seek(int32_t newPos, SeekMode mode)
-{
-	CheckValid();
-	//flush(); <<<---?
-	//TODO: Add a check on file boundaries
-	fseek(mFile->GetHandle(), newPos + mSubPosition, (mode==SM_SeekFromBegin)?SEEK_SET:(mode==SM_SeekFromCurrent)?SEEK_CUR:SEEK_END);
-}
-
-size_t FileSubStream::GetPosition() const
-{
-	CheckValid();
-	return ftell(mFile->GetHandle()) - mSubPosition;
-}
-
-size_t FileSubStream::GetSize() const
-{
-	return mSubLength;
-}
-
-bool FileSubStream::CanRead() const
-{
-	CheckValid();
-	return Stream::CanRead();
-}
-
-bool FileSubStream::CanWrite() const
-{
-	return false;
-}
-
-bool FileSubStream::CanSeek() const
-{
-	return true;
-}
-
-}