kopia lustrzana https://github.com/Jean-MarcHarvengt/MCUME
79 wiersze
2.0 KiB
C
79 wiersze
2.0 KiB
C
//
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// Copyright(C) 1993-1996 Id Software, Inc.
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// Copyright(C) 2005-2014 Simon Howard
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (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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// DESCRIPTION:
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// WAD I/O functions.
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//
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#ifndef __W_FILE__
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#define __W_FILE__
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#include <stdio.h>
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#include "doomtype.h"
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typedef struct _wad_file_s wad_file_t;
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typedef struct
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{
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// Open a file for reading.
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wad_file_t *(*OpenFile)(char *path);
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// Close the specified file.
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void (*CloseFile)(wad_file_t *file);
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// Read data from the specified position in the file into the
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// provided buffer. Returns the number of bytes read.
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size_t (*Read)(wad_file_t *file, unsigned int offset,
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void *buffer, size_t buffer_len);
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} wad_file_class_t;
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struct _wad_file_s
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{
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// Class of this file.
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wad_file_class_t *file_class;
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// If this is NULL, the file cannot be mapped into memory. If this
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// is non-NULL, it is a pointer to the mapped file.
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byte *mapped;
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// Length of the file, in bytes.
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unsigned int length;
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};
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// Open the specified file. Returns a pointer to a new wad_file_t
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// handle for the WAD file, or NULL if it could not be opened.
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wad_file_t *W_OpenFile(char *path);
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// Close the specified WAD file.
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void W_CloseFile(wad_file_t *wad);
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// Read data from the specified file into the provided buffer. The
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// data is read from the specified offset from the start of the file.
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// Returns the number of bytes read.
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size_t W_Read(wad_file_t *wad, unsigned int offset,
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void *buffer, size_t buffer_len);
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#endif /* #ifndef __W_FILE__ */
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