1998-01-05 10:02:46 +03:00
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/* $NetBSD: gzip.h,v 1.2 1998/01/05 07:03:52 perry Exp $ */
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1997-10-19 15:00:51 +04:00
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/*
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* Interface for extracting gzip'ed data
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*
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* Written by Yasha (ITOH Yasufumi)
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* This code is in the public domain.
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*/
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#ifndef GZIP_H
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#define GZIP_H
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#ifdef __STDC__
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# define OF(p) p
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#else
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# define const
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# define OF(p) ()
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#endif
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typedef unsigned int uint32;
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typedef unsigned char uch;
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typedef unsigned short ush;
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typedef unsigned long ulg;
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typedef void *voidp;
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/* magic number for gzip */
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#define GZIP_MAGIC1 037
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#define GZIP_MAGIC2 0213
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#define GZIP_MAGIC2_OLD 0236 /* gzip 0.5 */
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/* check gzip magic number */
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#define check_gzip_magic(top) \
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({ register const uch *t = top; \
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*t++ == GZIP_MAGIC1 && (*t == GZIP_MAGIC2 || *t == GZIP_MAGIC2_OLD);})
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/* gzip compression method */
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#define GZIP_METHOD_DEFLATED 8
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/* gzip flags */
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#define GZIP_FLAG_ASCII 0001
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#define GZIP_FLAG_MULTIPART 0002
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#define GZIP_FLAG_EXTRA 0004
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#define GZIP_FLAG_FILE_NAME 0010
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#define GZIP_FLAG_COMMENT 0020
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#define GZIP_FLAG_ENCRYPTED 0040
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#define GZIP_FLAGS_RESERVED 0300
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/* the window size */
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#define WSIZE 32768
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extern const uch *csrc; /* compressed data */
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extern uch *udst; /* uncompressed data */
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extern long udst_cnt;
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extern unsigned outcnt;
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extern uch window[WSIZE];
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int unzip OF((const uch *src, uch *dst));
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#ifdef TEST
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int inflate OF((void));
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#endif
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void flush_window OF((void));
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void debug_print OF((const char *));
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#define error(m) debug_print(m)
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#define Tracecv(a, b)
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#define Tracevv(a)
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#ifndef NULL
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# define NULL 0
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#endif
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#endif /* GZIP_H */
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