forked from 0ad/0ad
116 lines
2.6 KiB
C
Executable File
116 lines
2.6 KiB
C
Executable File
// Zip archiving on top of ZLib.
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//
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// Copyright (c) 2003 Jan Wassenberg
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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 as
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// published by the Free Software Foundation; either version 2 of the
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// 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, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// Contact info:
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// Jan.Wassenberg@stud.uni-karlsruhe.de
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// http://www.stud.uni-karlsruhe.de/~urkt/
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#ifndef __ZIP_H__
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#define __ZIP_H__
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#include "h_mgr.h"
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#include "lib.h"
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#include "file.h"
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//
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// low-level in-memory inflate routines
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//
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extern uintptr_t zip_init_ctx();
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extern int zip_start_read(uintptr_t ctx, void* out, size_t out_size);
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extern ssize_t zip_inflate(uintptr_t ctx, void* in, size_t in_size);
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extern int zip_finish_read(uintptr_t ctx);
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extern int zip_free_ctx(uintptr_t ctx);
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//
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// archive
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//
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// open and return a handle to the zip archive indicated by <fn>
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extern Handle zip_archive_open(const char* fn);
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// close the archive <ha> and set ha to 0
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extern int zip_archive_close(Handle& ha);
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//
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// file
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//
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struct ZFile
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{
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#ifdef PARANOIA
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u32 magic;
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#endif
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// keep offset of flags and size members in sync with struct ZFile!
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// it is accessed by VFS and must be the same for both (union).
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// dirty, but necessary because VFile is pushing the HDATA size limit.
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int flags;
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size_t ucsize;
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// size of logical file
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size_t ofs;
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size_t csize;
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size_t last_raw_ofs;
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Handle ha;
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uintptr_t read_ctx;
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};
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// return file information for <fn> (may include path) in archive <ha>
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extern int zip_stat(Handle ha, const char* fn, struct stat* s);
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// open the file <fn> in archive <ha>, and fill *zf with information about it.
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extern int zip_open(Handle ha, const char* fn, ZFile* zf);
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// close the file <zf>
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extern int zip_close(ZFile* zf);
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extern int zip_map(ZFile* zf, void*& p, size_t& size);
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extern ssize_t zip_read(ZFile* zf, size_t ofs, size_t size, void*& p);
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//--------
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// read from file <hz>, starting at offset <ofs> in the compressed data
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// (typically only used if the file is known to be stored).
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// p == 0: allocate, read into, and return the output buffer
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// p != 0: read into given output buffer, return handle to it
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// if file is compressed, size must be >= uncompressed file size
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// size: no input value, unless specifying an output buffer (p != 0)
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// out:
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//extern void* zip_mmap(
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#endif // #ifndef __ZIP_H__
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