64 lines
2.1 KiB
C
64 lines
2.1 KiB
C
/*
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*
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* Singe 3
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* Copyright (C) 2006-2026 Scott Duensing <scott@kangaroopunch.com>
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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 3
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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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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*
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*/
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/*
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* Singe virtual filesystem: one lookup for every file a game names.
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*
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* A name resolves to a loose file in the game directory, to a copy-on-write
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* overlay in the data directory, or to an asset inside the game's SQLite
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* database, in that order. Loose games with no database see exactly the
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* filesystem they always did.
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*/
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#ifndef VFS_H
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#define VFS_H
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <SDL3/SDL.h>
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#define VFS_DATABASE_EXTENSION ".game"
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#define VFS_FORMAT_VERSION 1
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#define VFS_CHUNK_BYTES (4 * 1024 * 1024)
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typedef struct VfsStreamS VfsStreamT;
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bool vfsExists(const char *name);
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char *vfsFilePath(const char *name, bool forWriting);
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void vfsInit(const char *container, const char *dataDirBase, const char *dataDir);
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bool vfsIsDatabase(const char *path);
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SDL_IOStream *vfsOpenIO(const char *name);
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void vfsQuit(void);
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char *vfsRead(const char *name, size_t *bytes);
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bool vfsStat(const char *name, int64_t *size, int64_t *modified);
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void vfsStreamClose(VfsStreamT *stream);
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VfsStreamT *vfsStreamOpen(const char *name);
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int64_t vfsStreamRead(VfsStreamT *stream, void *buffer, int64_t bytes);
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int64_t vfsStreamSeek(VfsStreamT *stream, int64_t offset, int32_t whence);
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int64_t vfsStreamSize(VfsStreamT *stream);
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#endif
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