ref: b5950693c004b9d2024c078b8c957c3139c5abff
dir: /Game/src/file_lib.h/
//-------------------------------------------------------------------------
/*
Copyright (C) 1996, 2003 - 3D Realms Entertainment
This file is part of Duke Nukem 3D version 1.5 - Atomic Edition
Duke Nukem 3D is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
aint32_t with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
Original Source: 1996 - Todd Replogle
Prepared for public release: 03/21/2003 - Charlie Wiederhold, 3D Realms
*/
//-------------------------------------------------------------------------
#ifndef _file_lib_public
#define _file_lib_public
#ifdef __cplusplus
extern "C" {
#endif
enum
{
filetype_binary,
filetype_text
};
enum
{
access_read,
access_write,
access_append
};
//==========================================================================
//
// SafeOpenWrite - Opens a file for writing, returns handle
//
//==========================================================================
int32 SafeOpenWrite ( const char * filename, int32 filetype );
//==========================================================================
//
// SafeOpenRead - Opens a file for reading, returns handle
//
//==========================================================================
int32 SafeOpenRead ( const char * filename, int32 filetype );
//==========================================================================
//
// SafeOpenAppend - Opens a file for appending, returns handle
//
//==========================================================================
int32 SafeOpenAppend ( const char * filename, int32 filetype );
//==========================================================================
//
// SafeClose - Close a file denoted by the file handle
//
//==========================================================================
void SafeClose ( int32 handle );
//==========================================================================
//
// SafeFileExists - Checks for existence of file
//
//==========================================================================
boolean SafeFileExists ( const char * filename );
//==========================================================================
//
// SafeFileLength - Get length of a file pointed to by handle
//
//==========================================================================
int32 SafeFileLength ( int32 handle );
//==========================================================================
//
// SafeRead - reads from a handle
//
// handle - handle of file to read from
//
// buffer - pointer of buffer to read into
//
// count - number of bytes to read
//
//==========================================================================
void SafeRead (int32 handle, void *buffer, int32 count);
//==========================================================================
//
// SafeWrite - writes to a handle
//
// handle - handle of file to write to
//
// buffer - pointer of buffer to write from
//
// count - number of bytes to write
//
//==========================================================================
void SafeWrite (int32 handle, void *buffer, int32 count);
//==========================================================================
//
// LoadFile - Load a file
//
// filename - name of file
//
// bufferptr - pointer to pointer of buffer to read into
//
// returns number of bytes read
//
//==========================================================================
int32 LoadFile ( const uint8_t * filename, void ** bufferptr );
//==========================================================================
//
// SaveFile - Save a file
//
// filename - name of file
//
// bufferptr - pointer to buffer to write from
//
// count - number of bytes to write
//
//==========================================================================
void SaveFile ( const uint8_t * filename, void * bufferptr, int32 count );
//==========================================================================
//
// GetPathFromEnvironment - Add a pathname described in an environment
// variable to a standard filename.
//
// fullname - final string containing entire path
//
// envname - string naming enivronment variable
//
// filename - standard filename
//
//==========================================================================
void GetPathFromEnvironment( uint8_t *fullname, const uint8_t *envname, const uint8_t *filename );
//==========================================================================
//
// DefaultExtension - Add a default extension to a path
//
// path - a path
//
// extension - default extension should include '.'
//
//==========================================================================
void DefaultExtension (uint8_t *path, const uint8_t *extension);
//==========================================================================
//
// DefaultPath - Add the default path to a filename if it doesn't have one
//
// path - filename
//
// extension - default path
//
//==========================================================================
void DefaultPath (uint8_t *path, const uint8_t *basepath);
//==========================================================================
//
// ExtractFileBase - Extract the base filename from a path
//
// path - the path
//
// dest - where the file base name will be placed
//
//==========================================================================
void ExtractFileBase (uint8_t *path, uint8_t *dest);
//==========================================================================
//
// GetExtension - Extract the extension from a name
// returns true if an extension is found
// returns false otherwise
//
//==========================================================================
boolean GetExtension( uint8_t *filename, uint8_t *extension );
//==========================================================================
//
// SetExtension - Sets the extension from a name. Assumes that enough
// space is left at the end of the string to hold an extension.
//
//==========================================================================
void SetExtension( uint8_t *filename, const uint8_t *extension );
#ifdef __MSDOS__
//******************************************************************************
//
// GetPath
//
// Purpose
// To parse the directory entered by the user to make the directory.
//
// Parms
// Path - the path to be parsed.
//
// Returns
// Pointer to next path
//
//******************************************************************************
uint8_t * GetPath (uint8_t * path, uint8_t *dir);
//******************************************************************************
//
// ChangeDirectory ()
//
// Purpose
// To change to a directory. Checks for drive changes.
//
// Parms
// path - The path to change to.
//
// Returns
// TRUE - If successful.
// FALSE - If unsuccessful.
//
//******************************************************************************
boolean ChangeDirectory (uint8_t * path);
//******************************************************************************
//
// ChangeDrive ()
//
// Purpose
// To change drives.
//
// Parms
// drive - The drive to change to.
//
// Returns
// TRUE - If drive change successful.
// FALSE - If drive change unsuccessful.
//
//******************************************************************************
boolean ChangeDrive (uint8_t *drive);
#endif
#ifdef __cplusplus
};
#endif
#endif