ref: 02f2b37c714aa44d82b7e311e03df39430706e69
dir: /src/w_file.h/
// Emacs style mode select -*- C++ -*- //----------------------------------------------------------------------------- // // Copyright(C) 1993-1996 Id Software, Inc. // Copyright(C) 2008 Simon Howard // // This program 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 // along with this program; if not, write to the Free Software // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA // 02111-1307, USA. // // DESCRIPTION: // WAD I/O functions. // //----------------------------------------------------------------------------- #ifndef __W_FILE__ #define __W_FILE__ #include <stdio.h> #include "doomtype.h" typedef struct _wad_file_s wad_file_t; typedef struct { // Open a file for reading. wad_file_t *(*OpenFile)(char *path); // Close the specified file. void (*CloseFile)(wad_file_t *file); // Read data from the specified position in the file into the // provided buffer. Returns the number of bytes read. size_t (*Read)(wad_file_t *file, unsigned int offset, void *buffer, size_t buffer_len); } wad_file_class_t; struct _wad_file_s { // Class of this file. wad_file_class_t *file_class; // If this is NULL, the file cannot be mapped into memory. If this // is non-NULL, it is a pointer to the mapped file. byte *mapped; // Length of the file, in bytes. unsigned int length; }; // Open the specified file. Returns a pointer to a new wad_file_t // handle for the WAD file, or NULL if it could not be opened. wad_file_t *W_OpenFile(char *path); // Close the specified WAD file. void W_CloseFile(wad_file_t *wad); // Read data from the specified file into the provided buffer. The // data is read from the specified offset from the start of the file. // Returns the number of bytes read. size_t W_Read(wad_file_t *wad, unsigned int offset, void *buffer, size_t buffer_len); #endif /* #ifndef __W_FILE__ */