204 lines
8.2 KiB
C
204 lines
8.2 KiB
C
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/*
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** Command & Conquer Renegade(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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*** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S ***
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***********************************************************************************************
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* *
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* Project Name : Command & Conquer *
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* *
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* $Archive:: /Commando/Code/wwlib/rawfile.h $*
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* *
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* $Author:: Ian_l $*
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* *
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* $Modtime:: 10/31/01 2:00p $*
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* *
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* $Revision:: 9 $*
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* *
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*---------------------------------------------------------------------------------------------*
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* Functions: *
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* RawFileClass::File_Name -- Returns with the filename associate with the file object. *
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* RawFileClass::RawFileClass -- Default constructor for a file object. *
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* RawFileClass::~RawFileClass -- Default deconstructor for a file object. *
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* RawFileClass::Is_Open -- Checks to see if the file is open or not. *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#if _MSC_VER >= 1000
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#pragma once
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#endif // _MSC_VER >= 1000
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#ifndef RAWFILE_Hx
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#define RAWFILE_Hx
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//#include <errno.h>
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// #include "win.h"
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#ifdef _UNIX
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#include <stdio.h>
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#include "osdep.h"
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#define NULL_HANDLE NULL
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#define HANDLE_TYPE FILE*
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#else
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#define NULL_HANDLE INVALID_HANDLE_VALUE
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#define HANDLE_TYPE HANDLE
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#endif
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#include "wwfile.h"
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#ifndef WWERROR
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#define WWERROR -1
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#endif
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/*
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** This is the definition of the raw file class. It is derived from the abstract base FileClass
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** and handles the interface to the low level DOS routines. This is the first class in the
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** chain of derived file classes that actually performs a useful function. With this class,
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** I/O is possible. More sophisticated features, such as packed files, CD-ROM support,
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** file caching, and XMS/EMS memory support, are handled by derived classes.
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**
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** Of particular importance is the need to override the error routine if more sophisticated
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** error handling is required. This is more than likely if greater functionality is derived
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** from this base class.
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*/
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class RawFileClass : public FileClass
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{
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typedef FileClass BASECLASS;
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public:
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/*
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** This is a record of the access rights used to open the file. These rights are
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** used if the file object is duplicated.
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*/
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int Rights;
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RawFileClass(char const *filename);
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RawFileClass(void);
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RawFileClass (RawFileClass const & f);
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RawFileClass & operator = (RawFileClass const & f);
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virtual ~RawFileClass(void);
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virtual char const * File_Name(void) const;
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virtual char const * Set_Name(char const *filename);
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virtual int Create(void);
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virtual int Delete(void);
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virtual bool Is_Available(int forced=false);
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virtual bool Is_Open(void) const;
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virtual int Open(char const *filename, int rights=READ);
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virtual int Open(int rights=READ);
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virtual int Read(void *buffer, int size);
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virtual int Seek(int pos, int dir=SEEK_CUR);
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virtual int Size(void);
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virtual int Write(void const *buffer, int size);
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virtual void Close(void);
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virtual unsigned long Get_Date_Time(void);
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virtual bool Set_Date_Time(unsigned long datetime);
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virtual void Error(int error, int canretry = false, char const * filename=NULL);
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virtual void Bias(int start, int length=-1);
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virtual void * Get_File_Handle(void) { return Handle; }
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virtual void Attach (void *handle, int rights=READ);
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virtual void Detach (void);
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/*
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** These bias values enable a sub-portion of a file to appear as if it
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** were the whole file. This comes in very handy for multi-part files such as
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** mixfiles.
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*/
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int BiasStart;
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int BiasLength;
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protected:
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/*
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** This function returns the largest size a low level DOS read or write may
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** perform. Larger file transfers are performed in chunks of this size or less.
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*/
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int Transfer_Block_Size(void);
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int Raw_Seek(int pos, int dir=SEEK_CUR);
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void Reset(void);
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private:
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/*
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** This is the low level DOS handle. A -1 indicates an empty condition.
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*/
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#ifdef _UNIX
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FILE* Handle;
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#else
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void * Handle;
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#endif
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/*
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** This points to the filename as a NULL terminated string. It may point to either a
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** constant or an allocated string as indicated by the "Allocated" flag.
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*/
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char const * Filename;
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//
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// file date and time are in the following formats:
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//
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// date bits 0-4 day (0-31)
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// bits 5-8 month (1-12)
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// bits 9-15 year (0-119 representing 1980-2099)
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//
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// time bits 0-4 second/2 (0-29)
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// bits 5-10 minutes (0-59)
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// bits 11-15 hours (0-23)
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//
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unsigned short Date;
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unsigned short Time;
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/*
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** Filenames that were assigned as part of the construction process
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** are not allocated. It is assumed that the filename string is a
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** constant in that case and thus making duplication unnecessary.
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** This value will be non-zero if the filename has be allocated
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** (using strdup()).
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*/
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bool Allocated;
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};
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/***********************************************************************************************
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* RawFileClass::File_Name -- Returns with the filename associate with the file object. *
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* *
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* Use this routine to determine what filename is associated with this file object. If no *
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* filename has yet been assigned, then this routing will return NULL. *
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* *
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* INPUT: none *
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* *
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* OUTPUT: Returns with a pointer to the file name associated with this file object or NULL *
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* if one doesn't exist. *
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* *
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* WARNINGS: none *
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* *
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* HISTORY: *
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* 10/18/1994 JLB : Created. *
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*=============================================================================================*/
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inline char const * RawFileClass::File_Name(void) const
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{
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return(Filename);
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}
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#endif
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