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46 lines
1.9 KiB
C
46 lines
1.9 KiB
C
/* ioapi_mem.h -- IO base function header for compress/uncompress .zip
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files using zlib + zip or unzip API
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This version of ioapi is designed to access memory rather than files.
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We do use a region of memory to put data in to and take it out of. We do
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not have auto-extending buffers and do not inform anyone else that the
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data has been written. It is really intended for accessing a zip archive
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embedded in an application such that I can write an installer with no
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external files. Creation of archives has not been attempted, although
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parts of the framework are present.
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Based on Unzip ioapi.c version 0.22, May 19th, 2003
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Copyright (C) 1998-2003 Gilles Vollant
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(C) 2003 Justin Fletcher
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This file is under the same license as the Unzip tool it is distributed
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with.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "zlib.h"
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#include "ioapi.h"
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voidpf ZCALLBACK fopen_mem_func OF((voidpf opaque,const char* filename,int mode));
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voidpf ZCALLBACK fopendisk_mem_func OF((voidpf opaque, voidpf stream, int number_disk, int mode));
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uLong ZCALLBACK fread_mem_func OF((voidpf opaque,voidpf stream,void* buf,uLong size));
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uLong ZCALLBACK fwrite_mem_func OF((voidpf opaque,voidpf stream,const void* buf,uLong size));
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long ZCALLBACK ftell_mem_func OF((voidpf opaque,voidpf stream));
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long ZCALLBACK fseek_mem_func OF((voidpf opaque,voidpf stream,uLong offset,int origin));
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int ZCALLBACK fclose_mem_func OF((voidpf opaque,voidpf stream));
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int ZCALLBACK ferror_mem_func OF((voidpf opaque,voidpf stream));
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typedef struct ourmemory_s {
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char *base; /* Base of the region of memory we're using */
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uLong size; /* Size of the region of memory we're using */
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uLong limit; /* Furthest we've written */
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uLong cur_offset; /* Current offset in the area */
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} ourmemory_t;
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void fill_memory_filefunc (zlib_filefunc_def* pzlib_filefunc_def, ourmemory_t *ourmem); |