📄 file_lib.h
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//-------------------------------------------------------------------------/*Copyright (C) 1996, 2003 - 3D Realms EntertainmentThis file is part of Duke Nukem 3D version 1.5 - Atomic EditionDuke Nukem 3D is free software; you can redistribute it and/ormodify it under the terms of the GNU General Public Licenseas published by the Free Software Foundation; either version 2of 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 ofMERCHANTABILITY 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 Licensealong with this program; if not, write to the Free SoftwareFoundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.Original Source: 1996 - Todd ReploglePrepared for public release: 03/21/2003 - Charlie Wiederhold, 3D Realms*///-------------------------------------------------------------------------#ifndef _file_lib_public#define _file_lib_public#ifdef __cplusplusextern "C" {#endifenum { 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 char * 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 char * 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( char *fullname, const char *envname, const char *filename );//==========================================================================//// DefaultExtension - Add a default extension to a path//// path - a path//// extension - default extension should include '.'////==========================================================================void DefaultExtension (char *path, const char *extension);//==========================================================================//// DefaultPath - Add the default path to a filename if it doesn't have one//// path - filename//// extension - default path////==========================================================================void DefaultPath (char *path, const char *basepath);//==========================================================================//// ExtractFileBase - Extract the base filename from a path//// path - the path//// dest - where the file base name will be placed////==========================================================================void ExtractFileBase (char *path, char *dest);//==========================================================================//// GetExtension - Extract the extension from a name// returns true if an extension is found// returns false otherwise////==========================================================================boolean GetExtension( char *filename, char *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( char *filename, const char *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////******************************************************************************char * GetPath (char * path, char *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 (char * 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 (char *drive);#endif#ifdef __cplusplus};#endif#endif⌨️ 快捷键说明
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