101 lines
2.7 KiB
C
101 lines
2.7 KiB
C
#ifndef ZUTIL_H
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#define ZUTIL_H
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#include "third_party/zlib/zlib.h"
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/* default windowBits for decompression. MAX_WBITS is for compression only */
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#ifndef DEF_WBITS
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#define DEF_WBITS MAX_WBITS
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#endif
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/* default memLevel */
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/* The three kinds of block type */
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#define STORED_BLOCK 0
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#define STATIC_TREES 1
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#define DYN_TREES 2
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/* The minimum and maximum match lengths */
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#define MIN_MATCH 3
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#define MAX_MATCH 258
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#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
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#define OS_CODE 3 /* assume Unix */
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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#ifndef local
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#define local static
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#endif
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/* since "static" is used to mean two completely different things in C, we
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define "local" for the non-static meaning of "static", for readability
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(compile with -Dlocal if your debugger can't find static symbols) */
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extern const char *const z_errmsg[10]; /* indexed by 2-zlib_error */
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/* (size given to avoid silly warnings with Visual C++) */
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#define ERR_MSG(err) z_errmsg[Z_NEED_DICT - (err)]
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#define ERR_RETURN(strm, err) return (strm->msg = ERR_MSG(err), (err))
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/* To be used only when the state is known to be valid */
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#ifndef F_OPEN
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#define F_OPEN(name, mode) fopen((name), (mode))
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#endif
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/* Diagnostic functions */
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#ifdef ZLIB_DEBUG
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#include "libc/stdio/stdio.h"
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extern int z_verbose hidden;
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extern void z_error(char *m) hidden;
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#define Assert(cond, msg) \
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{ \
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if (!(cond)) z_error(msg); \
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}
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#define Trace(x) \
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{ \
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if (z_verbose >= 0) fprintf x; \
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}
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#define Tracev(x) \
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{ \
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if (z_verbose > 0) fprintf x; \
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}
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#define Tracevv(x) \
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{ \
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if (z_verbose > 1) fprintf x; \
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}
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#define Tracec(c, x) \
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{ \
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if (z_verbose > 0 && (c)) fprintf x; \
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}
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#define Tracecv(c, x) \
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{ \
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if (z_verbose > 1 && (c)) fprintf x; \
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}
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#else
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#define Assert(cond, msg)
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#define Trace(x)
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#define Tracev(x)
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#define Tracevv(x)
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#define Tracec(c, x)
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#define Tracecv(c, x)
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#endif
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#define ZALLOC(strm, items, size) \
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(*((strm)->zalloc))((strm)->opaque, (items), (size))
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#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
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#define TRY_FREE(s, p) \
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{ \
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if (p) ZFREE(s, p); \
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}
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/* Reverse the bytes in a 32-bit value */
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#define ZSWAP32(q) \
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((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + (((q)&0xff00) << 8) + \
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(((q)&0xff) << 24))
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* ZUTIL_H */
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