mirror of
https://github.com/jart/cosmopolitan.git
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fa20edc44d
- Remove most __ASSEMBLER__ __LINKER__ ifdefs - Rename libc/intrin/bits.h to libc/serialize.h - Block pthread cancelation in fchmodat() polyfill - Remove `clang-format off` statements in third_party
116 lines
4.5 KiB
C++
116 lines
4.5 KiB
C++
#include "libc/errno.h"
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#include "libc/limits.h"
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#include "libc/str/str.h"
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#include "third_party/zlib/macros.internal.h"
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#include "third_party/zlib/zlib.h"
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#include "third_party/zlib/zutil.internal.h"
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/* gzguts.h -- zlib internal header definitions for gz* operations
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* Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013, 2016 Mark Adler
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* For conditions of distribution and use, see copyright notice in zlib.h
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*/
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#ifdef _LARGEFILE64_SOURCE
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# ifndef _LARGEFILE_SOURCE
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# define _LARGEFILE_SOURCE 1
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# endif
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# ifdef _FILE_OFFSET_BITS
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# undef _FILE_OFFSET_BITS
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# endif
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#endif
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#define _POSIX_SOURCE
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#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
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# ifndef HAVE_VSNPRINTF
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# define HAVE_VSNPRINTF
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# endif
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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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#define zstrerror() strerror(errno)
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/* provide prototypes for these when building zlib without LFS */
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#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
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gzFile gzopen64(const char *, const char *);
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int64_t gzseek64(gzFile, int64_t, int);
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int64_t gztell64(gzFile);
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int64_t gzoffset64(gzFile);
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#endif
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/* default memLevel */
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#if MAX_MEM_LEVEL >= 8
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# define DEF_MEM_LEVEL 8
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#else
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# define DEF_MEM_LEVEL MAX_MEM_LEVEL
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#endif
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/* default i/o buffer size -- double this for output when reading (this and
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twice this must be able to fit in an unsigned type) */
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#define GZBUFSIZE 8192
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/* gzip modes, also provide a little integrity check on the passed structure */
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#define GZ_NONE 0
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#define GZ_READ 7247
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#define GZ_WRITE 31153
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#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */
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/* values for gz_state how */
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#define LOOK 0 /* look for a gzip header */
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#define COPY 1 /* copy input directly */
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#define GZIP 2 /* decompress a gzip stream */
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/* internal gzip file state data structure */
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typedef struct {
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/* exposed contents for gzgetc() macro */
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struct gzFile_s x; /* "x" for exposed */
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/* x.have: number of bytes available at x.next */
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/* x.next: next output data to deliver or write */
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/* x.pos: current position in uncompressed data */
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/* used for both reading and writing */
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int mode; /* see gzip modes above */
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int fd; /* file descriptor */
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char *path; /* path or fd for error messages */
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unsigned size; /* buffer size, zero if not allocated yet */
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unsigned want; /* requested buffer size, default is GZBUFSIZE */
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unsigned char *in; /* input buffer (double-sized when writing) */
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unsigned char *out; /* output buffer (double-sized when reading) */
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int direct; /* 0 if processing gzip, 1 if transparent */
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/* just for reading */
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int how; /* 0: get header, 1: copy, 2: decompress */
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z_off64_t start; /* where the gzip data started, for rewinding */
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int eof; /* true if end of input file reached */
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int past; /* true if read requested past end */
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/* just for writing */
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int level; /* compression level */
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int strategy; /* compression strategy */
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int reset; /* true if a reset is pending after a Z_FINISH */
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/* seek request */
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z_off64_t skip; /* amount to skip (already rewound if backwards) */
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int seek; /* true if seek request pending */
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/* error information */
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int err; /* error code */
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char *msg; /* error message */
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/* zlib inflate or deflate stream */
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z_stream strm; /* stream structure in-place (not a pointer) */
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} gz_state;
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typedef gz_state FAR *gz_statep;
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/* shared functions */
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void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *));
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#if defined UNDER_CE
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char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error));
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#endif
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/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
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value -- needed when comparing unsigned to z_off64_t, which is signed
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(possible z_off64_t types off_t, off64_t, and long are all signed) */
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#ifdef INT_MAX
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# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)
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#else
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unsigned ZLIB_INTERNAL gz_intmax OF((void));
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# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
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#endif
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