Initial commit of Command & Conquer Generals and Command & Conquer Generals Zero Hour source code.
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GeneralsMD/Code/GameEngine/Include/Common/RAMFile.h
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GeneralsMD/Code/GameEngine/Include/Common/RAMFile.h
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/*
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** Command & Conquer Generals Zero Hour(tm)
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** Copyright 2025 Electronic Arts Inc.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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////////////////////////////////////////////////////////////////////////////////
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// //
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// (c) 2001-2003 Electronic Arts Inc. //
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// //
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////////////////////////////////////////////////////////////////////////////////
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//----------------------------------------------------------------------------=
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//
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// Westwood Studios Pacific.
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//
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// Confidential Information
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// Copyright(C) 2001 - All Rights Reserved
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//
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//----------------------------------------------------------------------------
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//
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// Project: WSYS Library
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//
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// Module: IO
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//
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// File name: wsys/RAMFile.h
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//
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// Created: 11/08/01
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//
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//----------------------------------------------------------------------------
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#pragma once
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#ifndef __RAMFILE_H
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#define __RAMFILE_H
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//----------------------------------------------------------------------------
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// Includes
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//----------------------------------------------------------------------------
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#include "Common/File.h"
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//----------------------------------------------------------------------------
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// Forward References
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//----------------------------------------------------------------------------
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//----------------------------------------------------------------------------
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// Type Defines
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//----------------------------------------------------------------------------
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//===============================
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// RAMFile
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//===============================
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/**
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* File abstraction for standard C file operators: open, close, lseek, read, write
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*/
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//===============================
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class RAMFile : public File
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{
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MEMORY_POOL_GLUE_WITH_USERLOOKUP_CREATE(RAMFile, "RAMFile")
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protected:
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Char *m_data; ///< File data in memory
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Int m_pos; ///< current read position
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Int m_size; ///< size of file in memory
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public:
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RAMFile();
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//virtual ~RAMFile();
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virtual Bool open( const Char *filename, Int access = 0 ); ///< Open a file for access
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virtual void close( void ); ///< Close the file
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virtual Int read( void *buffer, Int bytes ); ///< Read the specified number of bytes in to buffer: See File::read
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virtual Int write( const void *buffer, Int bytes ); ///< Write the specified number of bytes from the buffer: See File::write
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virtual Int seek( Int new_pos, seekMode mode = CURRENT ); ///< Set file position: See File::seek
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virtual void nextLine(Char *buf = NULL, Int bufSize = 0); ///< moves current position to after the next new-line
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virtual Bool scanInt(Int &newInt); ///< return what gets read as an integer from the current memory position.
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virtual Bool scanReal(Real &newReal); ///< return what gets read as a float from the current memory position.
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virtual Bool scanString(AsciiString &newString); ///< return what gets read as a string from the current memory position.
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virtual Bool open( File *file ); ///< Open file for fast RAM access
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virtual Bool openFromArchive(File *archiveFile, const AsciiString& filename, Int offset, Int size); ///< copy file data from the given file at the given offset for the given size.
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virtual Bool copyDataToFile(File *localFile); ///< write the contents of the RAM file to the given local file. This could be REALLY slow.
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/**
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Allocate a buffer large enough to hold entire file, read
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the entire file into the buffer, then close the file.
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the buffer is owned by the caller, who is responsible
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for freeing is (via delete[]). This is a Good Thing to
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use because it minimizes memory copies for BIG files.
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*/
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virtual char* readEntireAndClose();
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virtual File* convertToRAMFile();
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};
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//----------------------------------------------------------------------------
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// Inlining
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//----------------------------------------------------------------------------
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#endif // __WSYS_RAMFILE_H
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