Attachment 42709 Details for Bug 33710 – /mnt/sdb8/sergei/AFSWD_debug/install/zlib-1.2.5/include/zlib.h

/mnt/sdb8/sergei/AFSWD_debug/install/zlib-1.2.5/include/zlib.h

zlib.h (text/x-chdr), 77.70 KB, created by Sergei Steshenko on 2011-01-30 02:47:35 UTC

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Creator: Sergei Steshenko

Created: 2011-01-30 02:47:35 UTC

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obsolete

>/* zlib.h -- interface of the 'zlib' general purpose compression library
>  version 1.2.5, April 19th, 2010
>
>  Copyright (C) 1995-2010 Jean-loup Gailly and Mark Adler
>
>  This software is provided 'as-is', without any express or implied
>  warranty.  In no event will the authors be held liable for any damages
>  arising from the use of this software.
>
>  Permission is granted to anyone to use this software for any purpose,
>  including commercial applications, and to alter it and redistribute it
>  freely, subject to the following restrictions:
>
>  1. The origin of this software must not be misrepresented; you must not
>     claim that you wrote the original software. If you use this software
>     in a product, an acknowledgment in the product documentation would be
>     appreciated but is not required.
>  2. Altered source versions must be plainly marked as such, and must not be
>     misrepresented as being the original software.
>  3. This notice may not be removed or altered from any source distribution.
>
>  Jean-loup Gailly        Mark Adler
>  jloup@gzip.org          madler@alumni.caltech.edu
>
>
>  The data format used by the zlib library is described by RFCs (Request for
>  Comments) 1950 to 1952 in the files http://www.ietf.org/rfc/rfc1950.txt
>  (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).
>*/
>
>#ifndef ZLIB_H
>#define ZLIB_H
>
>#include "zconf.h"
>
>#ifdef __cplusplus
>extern "C" {
>#endif
>
>#define ZLIB_VERSION "1.2.5"
>#define ZLIB_VERNUM 0x1250
>#define ZLIB_VER_MAJOR 1
>#define ZLIB_VER_MINOR 2
>#define ZLIB_VER_REVISION 5
>#define ZLIB_VER_SUBREVISION 0
>
>/*
>    The 'zlib' compression library provides in-memory compression and
>  decompression functions, including integrity checks of the uncompressed data.
>  This version of the library supports only one compression method (deflation)
>  but other algorithms will be added later and will have the same stream
>  interface.
>
>    Compression can be done in a single step if the buffers are large enough,
>  or can be done by repeated calls of the compression function.  In the latter
>  case, the application must provide more input and/or consume the output
>  (providing more output space) before each call.
>
>    The compressed data format used by default by the in-memory functions is
>  the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped
>  around a deflate stream, which is itself documented in RFC 1951.
>
>    The library also supports reading and writing files in gzip (.gz) format
>  with an interface similar to that of stdio using the functions that start
>  with "gz".  The gzip format is different from the zlib format.  gzip is a
>  gzip wrapper, documented in RFC 1952, wrapped around a deflate stream.
>
>    This library can optionally read and write gzip streams in memory as well.
>
>    The zlib format was designed to be compact and fast for use in memory
>  and on communications channels.  The gzip format was designed for single-
>  file compression on file systems, has a larger header than zlib to maintain
>  directory information, and uses a different, slower check method than zlib.
>
>    The library does not install any signal handler.  The decoder checks
>  the consistency of the compressed data, so the library should never crash
>  even in case of corrupted input.
>*/
>
>typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));
>typedef void   (*free_func)  OF((voidpf opaque, voidpf address));
>
>struct internal_state;
>
>typedef struct z_stream_s {
>    Bytef    *next_in;  /* next input byte */
>    uInt     avail_in;  /* number of bytes available at next_in */
>    uLong    total_in;  /* total nb of input bytes read so far */
>
>    Bytef    *next_out; /* next output byte should be put there */
>    uInt     avail_out; /* remaining free space at next_out */
>    uLong    total_out; /* total nb of bytes output so far */
>
>    char     *msg;      /* last error message, NULL if no error */
>    struct internal_state FAR *state; /* not visible by applications */
>
>    alloc_func zalloc;  /* used to allocate the internal state */
>    free_func  zfree;   /* used to free the internal state */
>    voidpf     opaque;  /* private data object passed to zalloc and zfree */
>
>    int     data_type;  /* best guess about the data type: binary or text */
>    uLong   adler;      /* adler32 value of the uncompressed data */
>    uLong   reserved;   /* reserved for future use */
>} z_stream;
>
>typedef z_stream FAR *z_streamp;
>
>/*
>     gzip header information passed to and from zlib routines.  See RFC 1952
>  for more details on the meanings of these fields.
>*/
>typedef struct gz_header_s {
>    int     text;       /* true if compressed data believed to be text */
>    uLong   time;       /* modification time */
>    int     xflags;     /* extra flags (not used when writing a gzip file) */
>    int     os;         /* operating system */
>    Bytef   *extra;     /* pointer to extra field or Z_NULL if none */
>    uInt    extra_len;  /* extra field length (valid if extra != Z_NULL) */
>    uInt    extra_max;  /* space at extra (only when reading header) */
>    Bytef   *name;      /* pointer to zero-terminated file name or Z_NULL */
>    uInt    name_max;   /* space at name (only when reading header) */
>    Bytef   *comment;   /* pointer to zero-terminated comment or Z_NULL */
>    uInt    comm_max;   /* space at comment (only when reading header) */
>    int     hcrc;       /* true if there was or will be a header crc */
>    int     done;       /* true when done reading gzip header (not used
>                           when writing a gzip file) */
>} gz_header;
>
>typedef gz_header FAR *gz_headerp;
>
>/*
>     The application must update next_in and avail_in when avail_in has dropped
>   to zero.  It must update next_out and avail_out when avail_out has dropped
>   to zero.  The application must initialize zalloc, zfree and opaque before
>   calling the init function.  All other fields are set by the compression
>   library and must not be updated by the application.
>
>     The opaque value provided by the application will be passed as the first
>   parameter for calls of zalloc and zfree.  This can be useful for custom
>   memory management.  The compression library attaches no meaning to the
>   opaque value.
>
>     zalloc must return Z_NULL if there is not enough memory for the object.
>   If zlib is used in a multi-threaded application, zalloc and zfree must be
>   thread safe.
>
>     On 16-bit systems, the functions zalloc and zfree must be able to allocate
>   exactly 65536 bytes, but will not be required to allocate more than this if
>   the symbol MAXSEG_64K is defined (see zconf.h).  WARNING: On MSDOS, pointers
>   returned by zalloc for objects of exactly 65536 bytes *must* have their
>   offset normalized to zero.  The default allocation function provided by this
>   library ensures this (see zutil.c).  To reduce memory requirements and avoid
>   any allocation of 64K objects, at the expense of compression ratio, compile
>   the library with -DMAX_WBITS=14 (see zconf.h).
>
>     The fields total_in and total_out can be used for statistics or progress
>   reports.  After compression, total_in holds the total size of the
>   uncompressed data and may be saved for use in the decompressor (particularly
>   if the decompressor wants to decompress everything in a single step).
>*/
>
>                        /* constants */
>
>#define Z_NO_FLUSH      0
>#define Z_PARTIAL_FLUSH 1
>#define Z_SYNC_FLUSH    2
>#define Z_FULL_FLUSH    3
>#define Z_FINISH        4
>#define Z_BLOCK         5
>#define Z_TREES         6
>/* Allowed flush values; see deflate() and inflate() below for details */
>
>#define Z_OK            0
>#define Z_STREAM_END    1
>#define Z_NEED_DICT     2
>#define Z_ERRNO        (-1)
>#define Z_STREAM_ERROR (-2)
>#define Z_DATA_ERROR   (-3)
>#define Z_MEM_ERROR    (-4)
>#define Z_BUF_ERROR    (-5)
>#define Z_VERSION_ERROR (-6)
>/* Return codes for the compression/decompression functions. Negative values
> * are errors, positive values are used for special but normal events.
> */
>
>#define Z_NO_COMPRESSION         0
>#define Z_BEST_SPEED             1
>#define Z_BEST_COMPRESSION       9
>#define Z_DEFAULT_COMPRESSION  (-1)
>/* compression levels */
>
>#define Z_FILTERED            1
>#define Z_HUFFMAN_ONLY        2
>#define Z_RLE                 3
>#define Z_FIXED               4
>#define Z_DEFAULT_STRATEGY    0
>/* compression strategy; see deflateInit2() below for details */
>
>#define Z_BINARY   0
>#define Z_TEXT     1
>#define Z_ASCII    Z_TEXT   /* for compatibility with 1.2.2 and earlier */
>#define Z_UNKNOWN  2
>/* Possible values of the data_type field (though see inflate()) */
>
>#define Z_DEFLATED   8
>/* The deflate compression method (the only one supported in this version) */
>
>#define Z_NULL  0  /* for initializing zalloc, zfree, opaque */
>
>#define zlib_version zlibVersion()
>/* for compatibility with versions < 1.0.2 */
>
>
>                        /* basic functions */
>
>ZEXTERN const char * ZEXPORT zlibVersion OF((void));
>/* The application can compare zlibVersion and ZLIB_VERSION for consistency.
>   If the first character differs, the library code actually used is not
>   compatible with the zlib.h header file used by the application.  This check
>   is automatically made by deflateInit and inflateInit.
> */
>
>/*
>ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));
>
>     Initializes the internal stream state for compression.  The fields
>   zalloc, zfree and opaque must be initialized before by the caller.  If
>   zalloc and zfree are set to Z_NULL, deflateInit updates them to use default
>   allocation functions.
>
>     The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:
>   1 gives best speed, 9 gives best compression, 0 gives no compression at all
>   (the input data is simply copied a block at a time).  Z_DEFAULT_COMPRESSION
>   requests a default compromise between speed and compression (currently
>   equivalent to level 6).
>
>     deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
>   memory, Z_STREAM_ERROR if level is not a valid compression level, or
>   Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible
>   with the version assumed by the caller (ZLIB_VERSION).  msg is set to null
>   if there is no error message.  deflateInit does not perform any compression:
>   this will be done by deflate().
>*/
>
>
>ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
>/*
>    deflate compresses as much data as possible, and stops when the input
>  buffer becomes empty or the output buffer becomes full.  It may introduce
>  some output latency (reading input without producing any output) except when
>  forced to flush.
>
>    The detailed semantics are as follows.  deflate performs one or both of the
>  following actions:
>
>  - Compress more input starting at next_in and update next_in and avail_in
>    accordingly.  If not all input can be processed (because there is not
>    enough room in the output buffer), next_in and avail_in are updated and
>    processing will resume at this point for the next call of deflate().
>
>  - Provide more output starting at next_out and update next_out and avail_out
>    accordingly.  This action is forced if the parameter flush is non zero.
>    Forcing flush frequently degrades the compression ratio, so this parameter
>    should be set only when necessary (in interactive applications).  Some
>    output may be provided even if flush is not set.
>
>    Before the call of deflate(), the application should ensure that at least
>  one of the actions is possible, by providing more input and/or consuming more
>  output, and updating avail_in or avail_out accordingly; avail_out should
>  never be zero before the call.  The application can consume the compressed
>  output when it wants, for example when the output buffer is full (avail_out
>  == 0), or after each call of deflate().  If deflate returns Z_OK and with
>  zero avail_out, it must be called again after making room in the output
>  buffer because there might be more output pending.
>
>    Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to
>  decide how much data to accumulate before producing output, in order to
>  maximize compression.
>
>    If the parameter flush is set to Z_SYNC_FLUSH, all pending output is
>  flushed to the output buffer and the output is aligned on a byte boundary, so
>  that the decompressor can get all input data available so far.  (In
>  particular avail_in is zero after the call if enough output space has been
>  provided before the call.) Flushing may degrade compression for some
>  compression algorithms and so it should be used only when necessary.  This
>  completes the current deflate block and follows it with an empty stored block
>  that is three bits plus filler bits to the next byte, followed by four bytes
>  (00 00 ff ff).
>
>    If flush is set to Z_PARTIAL_FLUSH, all pending output is flushed to the
>  output buffer, but the output is not aligned to a byte boundary.  All of the
>  input data so far will be available to the decompressor, as for Z_SYNC_FLUSH.
>  This completes the current deflate block and follows it with an empty fixed
>  codes block that is 10 bits long.  This assures that enough bytes are output
>  in order for the decompressor to finish the block before the empty fixed code
>  block.
>
>    If flush is set to Z_BLOCK, a deflate block is completed and emitted, as
>  for Z_SYNC_FLUSH, but the output is not aligned on a byte boundary, and up to
>  seven bits of the current block are held to be written as the next byte after
>  the next deflate block is completed.  In this case, the decompressor may not
>  be provided enough bits at this point in order to complete decompression of
>  the data provided so far to the compressor.  It may need to wait for the next
>  block to be emitted.  This is for advanced applications that need to control
>  the emission of deflate blocks.
>
>    If flush is set to Z_FULL_FLUSH, all output is flushed as with
>  Z_SYNC_FLUSH, and the compression state is reset so that decompression can
>  restart from this point if previous compressed data has been damaged or if
>  random access is desired.  Using Z_FULL_FLUSH too often can seriously degrade
>  compression.
>
>    If deflate returns with avail_out == 0, this function must be called again
>  with the same value of the flush parameter and more output space (updated
>  avail_out), until the flush is complete (deflate returns with non-zero
>  avail_out).  In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that
>  avail_out is greater than six to avoid repeated flush markers due to
>  avail_out == 0 on return.
>
>    If the parameter flush is set to Z_FINISH, pending input is processed,
>  pending output is flushed and deflate returns with Z_STREAM_END if there was
>  enough output space; if deflate returns with Z_OK, this function must be
>  called again with Z_FINISH and more output space (updated avail_out) but no
>  more input data, until it returns with Z_STREAM_END or an error.  After
>  deflate has returned Z_STREAM_END, the only possible operations on the stream
>  are deflateReset or deflateEnd.
>
>    Z_FINISH can be used immediately after deflateInit if all the compression
>  is to be done in a single step.  In this case, avail_out must be at least the
>  value returned by deflateBound (see below).  If deflate does not return
>  Z_STREAM_END, then it must be called again as described above.
>
>    deflate() sets strm->adler to the adler32 checksum of all input read
>  so far (that is, total_in bytes).
>
>    deflate() may update strm->data_type if it can make a good guess about
>  the input data type (Z_BINARY or Z_TEXT).  In doubt, the data is considered
>  binary.  This field is only for information purposes and does not affect the
>  compression algorithm in any manner.
>
>    deflate() returns Z_OK if some progress has been made (more input
>  processed or more output produced), Z_STREAM_END if all input has been
>  consumed and all output has been produced (only when flush is set to
>  Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example
>  if next_in or next_out was Z_NULL), Z_BUF_ERROR if no progress is possible
>  (for example avail_in or avail_out was zero).  Note that Z_BUF_ERROR is not
>  fatal, and deflate() can be called again with more input and more output
>  space to continue compressing.
>*/
>
>
>ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
>/*
>     All dynamically allocated data structures for this stream are freed.
>   This function discards any unprocessed input and does not flush any pending
>   output.
>
>     deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the
>   stream state was inconsistent, Z_DATA_ERROR if the stream was freed
>   prematurely (some input or output was discarded).  In the error case, msg
>   may be set but then points to a static string (which must not be
>   deallocated).
>*/
>
>
>/*
>ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
>
>     Initializes the internal stream state for decompression.  The fields
>   next_in, avail_in, zalloc, zfree and opaque must be initialized before by
>   the caller.  If next_in is not Z_NULL and avail_in is large enough (the
>   exact value depends on the compression method), inflateInit determines the
>   compression method from the zlib header and allocates all data structures
>   accordingly; otherwise the allocation will be deferred to the first call of
>   inflate.  If zalloc and zfree are set to Z_NULL, inflateInit updates them to
>   use default allocation functions.
>
>     inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
>   memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
>   version assumed by the caller, or Z_STREAM_ERROR if the parameters are
>   invalid, such as a null pointer to the structure.  msg is set to null if
>   there is no error message.  inflateInit does not perform any decompression
>   apart from possibly reading the zlib header if present: actual decompression
>   will be done by inflate().  (So next_in and avail_in may be modified, but
>   next_out and avail_out are unused and unchanged.) The current implementation
>   of inflateInit() does not process any header information -- that is deferred
>   until inflate() is called.
>*/
>
>
>ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
>/*
>    inflate decompresses as much data as possible, and stops when the input
>  buffer becomes empty or the output buffer becomes full.  It may introduce
>  some output latency (reading input without producing any output) except when
>  forced to flush.
>
>  The detailed semantics are as follows.  inflate performs one or both of the
>  following actions:
>
>  - Decompress more input starting at next_in and update next_in and avail_in
>    accordingly.  If not all input can be processed (because there is not
>    enough room in the output buffer), next_in is updated and processing will
>    resume at this point for the next call of inflate().
>
>  - Provide more output starting at next_out and update next_out and avail_out
>    accordingly.  inflate() provides as much output as possible, until there is
>    no more input data or no more space in the output buffer (see below about
>    the flush parameter).
>
>    Before the call of inflate(), the application should ensure that at least
>  one of the actions is possible, by providing more input and/or consuming more
>  output, and updating the next_* and avail_* values accordingly.  The
>  application can consume the uncompressed output when it wants, for example
>  when the output buffer is full (avail_out == 0), or after each call of
>  inflate().  If inflate returns Z_OK and with zero avail_out, it must be
>  called again after making room in the output buffer because there might be
>  more output pending.
>
>    The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH, Z_FINISH,
>  Z_BLOCK, or Z_TREES.  Z_SYNC_FLUSH requests that inflate() flush as much
>  output as possible to the output buffer.  Z_BLOCK requests that inflate()
>  stop if and when it gets to the next deflate block boundary.  When decoding
>  the zlib or gzip format, this will cause inflate() to return immediately
>  after the header and before the first block.  When doing a raw inflate,
>  inflate() will go ahead and process the first block, and will return when it
>  gets to the end of that block, or when it runs out of data.
>
>    The Z_BLOCK option assists in appending to or combining deflate streams.
>  Also to assist in this, on return inflate() will set strm->data_type to the
>  number of unused bits in the last byte taken from strm->next_in, plus 64 if
>  inflate() is currently decoding the last block in the deflate stream, plus
>  128 if inflate() returned immediately after decoding an end-of-block code or
>  decoding the complete header up to just before the first byte of the deflate
>  stream.  The end-of-block will not be indicated until all of the uncompressed
>  data from that block has been written to strm->next_out.  The number of
>  unused bits may in general be greater than seven, except when bit 7 of
>  data_type is set, in which case the number of unused bits will be less than
>  eight.  data_type is set as noted here every time inflate() returns for all
>  flush options, and so can be used to determine the amount of currently
>  consumed input in bits.
>
>    The Z_TREES option behaves as Z_BLOCK does, but it also returns when the
>  end of each deflate block header is reached, before any actual data in that
>  block is decoded.  This allows the caller to determine the length of the
>  deflate block header for later use in random access within a deflate block.
>  256 is added to the value of strm->data_type when inflate() returns
>  immediately after reaching the end of the deflate block header.
>
>    inflate() should normally be called until it returns Z_STREAM_END or an
>  error.  However if all decompression is to be performed in a single step (a
>  single call of inflate), the parameter flush should be set to Z_FINISH.  In
>  this case all pending input is processed and all pending output is flushed;
>  avail_out must be large enough to hold all the uncompressed data.  (The size
>  of the uncompressed data may have been saved by the compressor for this
>  purpose.) The next operation on this stream must be inflateEnd to deallocate
>  the decompression state.  The use of Z_FINISH is never required, but can be
>  used to inform inflate that a faster approach may be used for the single
>  inflate() call.
>
>     In this implementation, inflate() always flushes as much output as
>  possible to the output buffer, and always uses the faster approach on the
>  first call.  So the only effect of the flush parameter in this implementation
>  is on the return value of inflate(), as noted below, or when it returns early
>  because Z_BLOCK or Z_TREES is used.
>
>     If a preset dictionary is needed after this call (see inflateSetDictionary
>  below), inflate sets strm->adler to the adler32 checksum of the dictionary
>  chosen by the compressor and returns Z_NEED_DICT; otherwise it sets
>  strm->adler to the adler32 checksum of all output produced so far (that is,
>  total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described
>  below.  At the end of the stream, inflate() checks that its computed adler32
>  checksum is equal to that saved by the compressor and returns Z_STREAM_END
>  only if the checksum is correct.
>
>    inflate() can decompress and check either zlib-wrapped or gzip-wrapped
>  deflate data.  The header type is detected automatically, if requested when
>  initializing with inflateInit2().  Any information contained in the gzip
>  header is not retained, so applications that need that information should
>  instead use raw inflate, see inflateInit2() below, or inflateBack() and
>  perform their own processing of the gzip header and trailer.
>
>    inflate() returns Z_OK if some progress has been made (more input processed
>  or more output produced), Z_STREAM_END if the end of the compressed data has
>  been reached and all uncompressed output has been produced, Z_NEED_DICT if a
>  preset dictionary is needed at this point, Z_DATA_ERROR if the input data was
>  corrupted (input stream not conforming to the zlib format or incorrect check
>  value), Z_STREAM_ERROR if the stream structure was inconsistent (for example
>  next_in or next_out was Z_NULL), Z_MEM_ERROR if there was not enough memory,
>  Z_BUF_ERROR if no progress is possible or if there was not enough room in the
>  output buffer when Z_FINISH is used.  Note that Z_BUF_ERROR is not fatal, and
>  inflate() can be called again with more input and more output space to
>  continue decompressing.  If Z_DATA_ERROR is returned, the application may
>  then call inflateSync() to look for a good compression block if a partial
>  recovery of the data is desired.
>*/
>
>
>ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));
>/*
>     All dynamically allocated data structures for this stream are freed.
>   This function discards any unprocessed input and does not flush any pending
>   output.
>
>     inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state
>   was inconsistent.  In the error case, msg may be set but then points to a
>   static string (which must not be deallocated).
>*/
>
>
>                        /* Advanced functions */
>
>/*
>    The following functions are needed only in some special applications.
>*/
>
>/*
>ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
>                                     int  level,
>                                     int  method,
>                                     int  windowBits,
>                                     int  memLevel,
>                                     int  strategy));
>
>     This is another version of deflateInit with more compression options.  The
>   fields next_in, zalloc, zfree and opaque must be initialized before by the
>   caller.
>
>     The method parameter is the compression method.  It must be Z_DEFLATED in
>   this version of the library.
>
>     The windowBits parameter is the base two logarithm of the window size
>   (the size of the history buffer).  It should be in the range 8..15 for this
>   version of the library.  Larger values of this parameter result in better
>   compression at the expense of memory usage.  The default value is 15 if
>   deflateInit is used instead.
>
>     windowBits can also be -8..-15 for raw deflate.  In this case, -windowBits
>   determines the window size.  deflate() will then generate raw deflate data
>   with no zlib header or trailer, and will not compute an adler32 check value.
>
>     windowBits can also be greater than 15 for optional gzip encoding.  Add
>   16 to windowBits to write a simple gzip header and trailer around the
>   compressed data instead of a zlib wrapper.  The gzip header will have no
>   file name, no extra data, no comment, no modification time (set to zero), no
>   header crc, and the operating system will be set to 255 (unknown).  If a
>   gzip stream is being written, strm->adler is a crc32 instead of an adler32.
>
>     The memLevel parameter specifies how much memory should be allocated
>   for the internal compression state.  memLevel=1 uses minimum memory but is
>   slow and reduces compression ratio; memLevel=9 uses maximum memory for
>   optimal speed.  The default value is 8.  See zconf.h for total memory usage
>   as a function of windowBits and memLevel.
>
>     The strategy parameter is used to tune the compression algorithm.  Use the
>   value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a
>   filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no
>   string match), or Z_RLE to limit match distances to one (run-length
>   encoding).  Filtered data consists mostly of small values with a somewhat
>   random distribution.  In this case, the compression algorithm is tuned to
>   compress them better.  The effect of Z_FILTERED is to force more Huffman
>   coding and less string matching; it is somewhat intermediate between
>   Z_DEFAULT_STRATEGY and Z_HUFFMAN_ONLY.  Z_RLE is designed to be almost as
>   fast as Z_HUFFMAN_ONLY, but give better compression for PNG image data.  The
>   strategy parameter only affects the compression ratio but not the
>   correctness of the compressed output even if it is not set appropriately.
>   Z_FIXED prevents the use of dynamic Huffman codes, allowing for a simpler
>   decoder for special applications.
>
>     deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
>   memory, Z_STREAM_ERROR if any parameter is invalid (such as an invalid
>   method), or Z_VERSION_ERROR if the zlib library version (zlib_version) is
>   incompatible with the version assumed by the caller (ZLIB_VERSION).  msg is
>   set to null if there is no error message.  deflateInit2 does not perform any
>   compression: this will be done by deflate().
>*/
>
>ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,
>                                             const Bytef *dictionary,
>                                             uInt  dictLength));
>/*
>     Initializes the compression dictionary from the given byte sequence
>   without producing any compressed output.  This function must be called
>   immediately after deflateInit, deflateInit2 or deflateReset, before any call
>   of deflate.  The compressor and decompressor must use exactly the same
>   dictionary (see inflateSetDictionary).
>
>     The dictionary should consist of strings (byte sequences) that are likely
>   to be encountered later in the data to be compressed, with the most commonly
>   used strings preferably put towards the end of the dictionary.  Using a
>   dictionary is most useful when the data to be compressed is short and can be
>   predicted with good accuracy; the data can then be compressed better than
>   with the default empty dictionary.
>
>     Depending on the size of the compression data structures selected by
>   deflateInit or deflateInit2, a part of the dictionary may in effect be
>   discarded, for example if the dictionary is larger than the window size
>   provided in deflateInit or deflateInit2.  Thus the strings most likely to be
>   useful should be put at the end of the dictionary, not at the front.  In
>   addition, the current implementation of deflate will use at most the window
>   size minus 262 bytes of the provided dictionary.
>
>     Upon return of this function, strm->adler is set to the adler32 value
>   of the dictionary; the decompressor may later use this value to determine
>   which dictionary has been used by the compressor.  (The adler32 value
>   applies to the whole dictionary even if only a subset of the dictionary is
>   actually used by the compressor.) If a raw deflate was requested, then the
>   adler32 value is not computed and strm->adler is not set.
>
>     deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a
>   parameter is invalid (e.g.  dictionary being Z_NULL) or the stream state is
>   inconsistent (for example if deflate has already been called for this stream
>   or if the compression method is bsort).  deflateSetDictionary does not
>   perform any compression: this will be done by deflate().
>*/
>
>ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
>                                    z_streamp source));
>/*
>     Sets the destination stream as a complete copy of the source stream.
>
>     This function can be useful when several compression strategies will be
>   tried, for example when there are several ways of pre-processing the input
>   data with a filter.  The streams that will be discarded should then be freed
>   by calling deflateEnd.  Note that deflateCopy duplicates the internal
>   compression state which can be quite large, so this strategy is slow and can
>   consume lots of memory.
>
>     deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
>   enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
>   (such as zalloc being Z_NULL).  msg is left unchanged in both source and
>   destination.
>*/
>
>ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));
>/*
>     This function is equivalent to deflateEnd followed by deflateInit,
>   but does not free and reallocate all the internal compression state.  The
>   stream will keep the same compression level and any other attributes that
>   may have been set by deflateInit2.
>
>     deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
>   stream state was inconsistent (such as zalloc or state being Z_NULL).
>*/
>
>ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
>                                      int level,
>                                      int strategy));
>/*
>     Dynamically update the compression level and compression strategy.  The
>   interpretation of level and strategy is as in deflateInit2.  This can be
>   used to switch between compression and straight copy of the input data, or
>   to switch to a different kind of input data requiring a different strategy.
>   If the compression level is changed, the input available so far is
>   compressed with the old level (and may be flushed); the new level will take
>   effect only at the next call of deflate().
>
>     Before the call of deflateParams, the stream state must be set as for
>   a call of deflate(), since the currently available input may have to be
>   compressed and flushed.  In particular, strm->avail_out must be non-zero.
>
>     deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source
>   stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR if
>   strm->avail_out was zero.
>*/
>
>ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm,
>                                    int good_length,
>                                    int max_lazy,
>                                    int nice_length,
>                                    int max_chain));
>/*
>     Fine tune deflate's internal compression parameters.  This should only be
>   used by someone who understands the algorithm used by zlib's deflate for
>   searching for the best matching string, and even then only by the most
>   fanatic optimizer trying to squeeze out the last compressed bit for their
>   specific input data.  Read the deflate.c source code for the meaning of the
>   max_lazy, good_length, nice_length, and max_chain parameters.
>
>     deflateTune() can be called after deflateInit() or deflateInit2(), and
>   returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream.
> */
>
>ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm,
>                                       uLong sourceLen));
>/*
>     deflateBound() returns an upper bound on the compressed size after
>   deflation of sourceLen bytes.  It must be called after deflateInit() or
>   deflateInit2(), and after deflateSetHeader(), if used.  This would be used
>   to allocate an output buffer for deflation in a single pass, and so would be
>   called before deflate().
>*/
>
>ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,
>                                     int bits,
>                                     int value));
>/*
>     deflatePrime() inserts bits in the deflate output stream.  The intent
>   is that this function is used to start off the deflate output with the bits
>   leftover from a previous deflate stream when appending to it.  As such, this
>   function can only be used for raw deflate, and must be used before the first
>   deflate() call after a deflateInit2() or deflateReset().  bits must be less
>   than or equal to 16, and that many of the least significant bits of value
>   will be inserted in the output.
>
>     deflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source
>   stream state was inconsistent.
>*/
>
>ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,
>                                         gz_headerp head));
>/*
>     deflateSetHeader() provides gzip header information for when a gzip
>   stream is requested by deflateInit2().  deflateSetHeader() may be called
>   after deflateInit2() or deflateReset() and before the first call of
>   deflate().  The text, time, os, extra field, name, and comment information
>   in the provided gz_header structure are written to the gzip header (xflag is
>   ignored -- the extra flags are set according to the compression level).  The
>   caller must assure that, if not Z_NULL, name and comment are terminated with
>   a zero byte, and that if extra is not Z_NULL, that extra_len bytes are
>   available there.  If hcrc is true, a gzip header crc is included.  Note that
>   the current versions of the command-line version of gzip (up through version
>   1.3.x) do not support header crc's, and will report that it is a "multi-part
>   gzip file" and give up.
>
>     If deflateSetHeader is not used, the default gzip header has text false,
>   the time set to zero, and os set to 255, with no extra, name, or comment
>   fields.  The gzip header is returned to the default state by deflateReset().
>
>     deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
>   stream state was inconsistent.
>*/
>
>/*
>ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
>                                     int  windowBits));
>
>     This is another version of inflateInit with an extra parameter.  The
>   fields next_in, avail_in, zalloc, zfree and opaque must be initialized
>   before by the caller.
>
>     The windowBits parameter is the base two logarithm of the maximum window
>   size (the size of the history buffer).  It should be in the range 8..15 for
>   this version of the library.  The default value is 15 if inflateInit is used
>   instead.  windowBits must be greater than or equal to the windowBits value
>   provided to deflateInit2() while compressing, or it must be equal to 15 if
>   deflateInit2() was not used.  If a compressed stream with a larger window
>   size is given as input, inflate() will return with the error code
>   Z_DATA_ERROR instead of trying to allocate a larger window.
>
>     windowBits can also be zero to request that inflate use the window size in
>   the zlib header of the compressed stream.
>
>     windowBits can also be -8..-15 for raw inflate.  In this case, -windowBits
>   determines the window size.  inflate() will then process raw deflate data,
>   not looking for a zlib or gzip header, not generating a check value, and not
>   looking for any check values for comparison at the end of the stream.  This
>   is for use with other formats that use the deflate compressed data format
>   such as zip.  Those formats provide their own check values.  If a custom
>   format is developed using the raw deflate format for compressed data, it is
>   recommended that a check value such as an adler32 or a crc32 be applied to
>   the uncompressed data as is done in the zlib, gzip, and zip formats.  For
>   most applications, the zlib format should be used as is.  Note that comments
>   above on the use in deflateInit2() applies to the magnitude of windowBits.
>
>     windowBits can also be greater than 15 for optional gzip decoding.  Add
>   32 to windowBits to enable zlib and gzip decoding with automatic header
>   detection, or add 16 to decode only the gzip format (the zlib format will
>   return a Z_DATA_ERROR).  If a gzip stream is being decoded, strm->adler is a
>   crc32 instead of an adler32.
>
>     inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
>   memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
>   version assumed by the caller, or Z_STREAM_ERROR if the parameters are
>   invalid, such as a null pointer to the structure.  msg is set to null if
>   there is no error message.  inflateInit2 does not perform any decompression
>   apart from possibly reading the zlib header if present: actual decompression
>   will be done by inflate().  (So next_in and avail_in may be modified, but
>   next_out and avail_out are unused and unchanged.) The current implementation
>   of inflateInit2() does not process any header information -- that is
>   deferred until inflate() is called.
>*/
>
>ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
>                                             const Bytef *dictionary,
>                                             uInt  dictLength));
>/*
>     Initializes the decompression dictionary from the given uncompressed byte
>   sequence.  This function must be called immediately after a call of inflate,
>   if that call returned Z_NEED_DICT.  The dictionary chosen by the compressor
>   can be determined from the adler32 value returned by that call of inflate.
>   The compressor and decompressor must use exactly the same dictionary (see
>   deflateSetDictionary).  For raw inflate, this function can be called
>   immediately after inflateInit2() or inflateReset() and before any call of
>   inflate() to set the dictionary.  The application must insure that the
>   dictionary that was used for compression is provided.
>
>     inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a
>   parameter is invalid (e.g.  dictionary being Z_NULL) or the stream state is
>   inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the
>   expected one (incorrect adler32 value).  inflateSetDictionary does not
>   perform any decompression: this will be done by subsequent calls of
>   inflate().
>*/
>
>ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
>/*
>     Skips invalid compressed data until a full flush point (see above the
>   description of deflate with Z_FULL_FLUSH) can be found, or until all
>   available input is skipped.  No output is provided.
>
>     inflateSync returns Z_OK if a full flush point has been found, Z_BUF_ERROR
>   if no more input was provided, Z_DATA_ERROR if no flush point has been
>   found, or Z_STREAM_ERROR if the stream structure was inconsistent.  In the
>   success case, the application may save the current current value of total_in
>   which indicates where valid compressed data was found.  In the error case,
>   the application may repeatedly call inflateSync, providing more input each
>   time, until success or end of the input data.
>*/
>
>ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest,
>                                    z_streamp source));
>/*
>     Sets the destination stream as a complete copy of the source stream.
>
>     This function can be useful when randomly accessing a large stream.  The
>   first pass through the stream can periodically record the inflate state,
>   allowing restarting inflate at those points when randomly accessing the
>   stream.
>
>     inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
>   enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
>   (such as zalloc being Z_NULL).  msg is left unchanged in both source and
>   destination.
>*/
>
>ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));
>/*
>     This function is equivalent to inflateEnd followed by inflateInit,
>   but does not free and reallocate all the internal decompression state.  The
>   stream will keep attributes that may have been set by inflateInit2.
>
>     inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
>   stream state was inconsistent (such as zalloc or state being Z_NULL).
>*/
>
>ZEXTERN int ZEXPORT inflateReset2 OF((z_streamp strm,
>                                      int windowBits));
>/*
>     This function is the same as inflateReset, but it also permits changing
>   the wrap and window size requests.  The windowBits parameter is interpreted
>   the same as it is for inflateInit2.
>
>     inflateReset2 returns Z_OK if success, or Z_STREAM_ERROR if the source
>   stream state was inconsistent (such as zalloc or state being Z_NULL), or if
>   the windowBits parameter is invalid.
>*/
>
>ZEXTERN int ZEXPORT inflatePrime OF((z_streamp strm,
>                                     int bits,
>                                     int value));
>/*
>     This function inserts bits in the inflate input stream.  The intent is
>   that this function is used to start inflating at a bit position in the
>   middle of a byte.  The provided bits will be used before any bytes are used
>   from next_in.  This function should only be used with raw inflate, and
>   should be used before the first inflate() call after inflateInit2() or
>   inflateReset().  bits must be less than or equal to 16, and that many of the
>   least significant bits of value will be inserted in the input.
>
>     If bits is negative, then the input stream bit buffer is emptied.  Then
>   inflatePrime() can be called again to put bits in the buffer.  This is used
>   to clear out bits leftover after feeding inflate a block description prior
>   to feeding inflate codes.
>
>     inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source
>   stream state was inconsistent.
>*/
>
>ZEXTERN long ZEXPORT inflateMark OF((z_streamp strm));
>/*
>     This function returns two values, one in the lower 16 bits of the return
>   value, and the other in the remaining upper bits, obtained by shifting the
>   return value down 16 bits.  If the upper value is -1 and the lower value is
>   zero, then inflate() is currently decoding information outside of a block.
>   If the upper value is -1 and the lower value is non-zero, then inflate is in
>   the middle of a stored block, with the lower value equaling the number of
>   bytes from the input remaining to copy.  If the upper value is not -1, then
>   it is the number of bits back from the current bit position in the input of
>   the code (literal or length/distance pair) currently being processed.  In
>   that case the lower value is the number of bytes already emitted for that
>   code.
>
>     A code is being processed if inflate is waiting for more input to complete
>   decoding of the code, or if it has completed decoding but is waiting for
>   more output space to write the literal or match data.
>
>     inflateMark() is used to mark locations in the input data for random
>   access, which may be at bit positions, and to note those cases where the
>   output of a code may span boundaries of random access blocks.  The current
>   location in the input stream can be determined from avail_in and data_type
>   as noted in the description for the Z_BLOCK flush parameter for inflate.
>
>     inflateMark returns the value noted above or -1 << 16 if the provided
>   source stream state was inconsistent.
>*/
>
>ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm,
>                                         gz_headerp head));
>/*
>     inflateGetHeader() requests that gzip header information be stored in the
>   provided gz_header structure.  inflateGetHeader() may be called after
>   inflateInit2() or inflateReset(), and before the first call of inflate().
>   As inflate() processes the gzip stream, head->done is zero until the header
>   is completed, at which time head->done is set to one.  If a zlib stream is
>   being decoded, then head->done is set to -1 to indicate that there will be
>   no gzip header information forthcoming.  Note that Z_BLOCK or Z_TREES can be
>   used to force inflate() to return immediately after header processing is
>   complete and before any actual data is decompressed.
>
>     The text, time, xflags, and os fields are filled in with the gzip header
>   contents.  hcrc is set to true if there is a header CRC.  (The header CRC
>   was valid if done is set to one.) If extra is not Z_NULL, then extra_max
>   contains the maximum number of bytes to write to extra.  Once done is true,
>   extra_len contains the actual extra field length, and extra contains the
>   extra field, or that field truncated if extra_max is less than extra_len.
>   If name is not Z_NULL, then up to name_max characters are written there,
>   terminated with a zero unless the length is greater than name_max.  If
>   comment is not Z_NULL, then up to comm_max characters are written there,
>   terminated with a zero unless the length is greater than comm_max.  When any
>   of extra, name, or comment are not Z_NULL and the respective field is not
>   present in the header, then that field is set to Z_NULL to signal its
>   absence.  This allows the use of deflateSetHeader() with the returned
>   structure to duplicate the header.  However if those fields are set to
>   allocated memory, then the application will need to save those pointers
>   elsewhere so that they can be eventually freed.
>
>     If inflateGetHeader is not used, then the header information is simply
>   discarded.  The header is always checked for validity, including the header
>   CRC if present.  inflateReset() will reset the process to discard the header
>   information.  The application would need to call inflateGetHeader() again to
>   retrieve the header from the next gzip stream.
>
>     inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
>   stream state was inconsistent.
>*/
>
>/*
>ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits,
>                                        unsigned char FAR *window));
>
>     Initialize the internal stream state for decompression using inflateBack()
>   calls.  The fields zalloc, zfree and opaque in strm must be initialized
>   before the call.  If zalloc and zfree are Z_NULL, then the default library-
>   derived memory allocation routines are used.  windowBits is the base two
>   logarithm of the window size, in the range 8..15.  window is a caller
>   supplied buffer of that size.  Except for special applications where it is
>   assured that deflate was used with small window sizes, windowBits must be 15
>   and a 32K byte window must be supplied to be able to decompress general
>   deflate streams.
>
>     See inflateBack() for the usage of these routines.
>
>     inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of
>   the paramaters are invalid, Z_MEM_ERROR if the internal state could not be
>   allocated, or Z_VERSION_ERROR if the version of the library does not match
>   the version of the header file.
>*/
>
>typedef unsigned (*in_func) OF((void FAR *, unsigned char FAR * FAR *));
>typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned));
>
>ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,
>                                    in_func in, void FAR *in_desc,
>                                    out_func out, void FAR *out_desc));
>/*
>     inflateBack() does a raw inflate with a single call using a call-back
>   interface for input and output.  This is more efficient than inflate() for
>   file i/o applications in that it avoids copying between the output and the
>   sliding window by simply making the window itself the output buffer.  This
>   function trusts the application to not change the output buffer passed by
>   the output function, at least until inflateBack() returns.
>
>     inflateBackInit() must be called first to allocate the internal state
>   and to initialize the state with the user-provided window buffer.
>   inflateBack() may then be used multiple times to inflate a complete, raw
>   deflate stream with each call.  inflateBackEnd() is then called to free the
>   allocated state.
>
>     A raw deflate stream is one with no zlib or gzip header or trailer.
>   This routine would normally be used in a utility that reads zip or gzip
>   files and writes out uncompressed files.  The utility would decode the
>   header and process the trailer on its own, hence this routine expects only
>   the raw deflate stream to decompress.  This is different from the normal
>   behavior of inflate(), which expects either a zlib or gzip header and
>   trailer around the deflate stream.
>
>     inflateBack() uses two subroutines supplied by the caller that are then
>   called by inflateBack() for input and output.  inflateBack() calls those
>   routines until it reads a complete deflate stream and writes out all of the
>   uncompressed data, or until it encounters an error.  The function's
>   parameters and return types are defined above in the in_func and out_func
>   typedefs.  inflateBack() will call in(in_desc, &buf) which should return the
>   number of bytes of provided input, and a pointer to that input in buf.  If
>   there is no input available, in() must return zero--buf is ignored in that
>   case--and inflateBack() will return a buffer error.  inflateBack() will call
>   out(out_desc, buf, len) to write the uncompressed data buf[0..len-1].  out()
>   should return zero on success, or non-zero on failure.  If out() returns
>   non-zero, inflateBack() will return with an error.  Neither in() nor out()
>   are permitted to change the contents of the window provided to
>   inflateBackInit(), which is also the buffer that out() uses to write from.
>   The length written by out() will be at most the window size.  Any non-zero
>   amount of input may be provided by in().
>
>     For convenience, inflateBack() can be provided input on the first call by
>   setting strm->next_in and strm->avail_in.  If that input is exhausted, then
>   in() will be called.  Therefore strm->next_in must be initialized before
>   calling inflateBack().  If strm->next_in is Z_NULL, then in() will be called
>   immediately for input.  If strm->next_in is not Z_NULL, then strm->avail_in
>   must also be initialized, and then if strm->avail_in is not zero, input will
>   initially be taken from strm->next_in[0 ..  strm->avail_in - 1].
>
>     The in_desc and out_desc parameters of inflateBack() is passed as the
>   first parameter of in() and out() respectively when they are called.  These
>   descriptors can be optionally used to pass any information that the caller-
>   supplied in() and out() functions need to do their job.
>
>     On return, inflateBack() will set strm->next_in and strm->avail_in to
>   pass back any unused input that was provided by the last in() call.  The
>   return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR
>   if in() or out() returned an error, Z_DATA_ERROR if there was a format error
>   in the deflate stream (in which case strm->msg is set to indicate the nature
>   of the error), or Z_STREAM_ERROR if the stream was not properly initialized.
>   In the case of Z_BUF_ERROR, an input or output error can be distinguished
>   using strm->next_in which will be Z_NULL only if in() returned an error.  If
>   strm->next_in is not Z_NULL, then the Z_BUF_ERROR was due to out() returning
>   non-zero.  (in() will always be called before out(), so strm->next_in is
>   assured to be defined if out() returns non-zero.) Note that inflateBack()
>   cannot return Z_OK.
>*/
>
>ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm));
>/*
>     All memory allocated by inflateBackInit() is freed.
>
>     inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream
>   state was inconsistent.
>*/
>
>ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void));
>/* Return flags indicating compile-time options.
>
>    Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other:
>     1.0: size of uInt
>     3.2: size of uLong
>     5.4: size of voidpf (pointer)
>     7.6: size of z_off_t
>
>    Compiler, assembler, and debug options:
>     8: DEBUG
>     9: ASMV or ASMINF -- use ASM code
>     10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention
>     11: 0 (reserved)
>
>    One-time table building (smaller code, but not thread-safe if true):
>     12: BUILDFIXED -- build static block decoding tables when needed
>     13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed
>     14,15: 0 (reserved)
>
>    Library content (indicates missing functionality):
>     16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking
>                          deflate code when not needed)
>     17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect
>                    and decode gzip streams (to avoid linking crc code)
>     18-19: 0 (reserved)
>
>    Operation variations (changes in library functionality):
>     20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate
>     21: FASTEST -- deflate algorithm with only one, lowest compression level
>     22,23: 0 (reserved)
>
>    The sprintf variant used by gzprintf (zero is best):
>     24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format
>     25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure!
>     26: 0 = returns value, 1 = void -- 1 means inferred string length returned
>
>    Remainder:
>     27-31: 0 (reserved)
> */
>
>
>                        /* utility functions */
>
>/*
>     The following utility functions are implemented on top of the basic
>   stream-oriented functions.  To simplify the interface, some default options
>   are assumed (compression level and memory usage, standard memory allocation
>   functions).  The source code of these utility functions can be modified if
>   you need special options.
>*/
>
>ZEXTERN int ZEXPORT compress OF((Bytef *dest,   uLongf *destLen,
>                                 const Bytef *source, uLong sourceLen));
>/*
>     Compresses the source buffer into the destination buffer.  sourceLen is
>   the byte length of the source buffer.  Upon entry, destLen is the total size
>   of the destination buffer, which must be at least the value returned by
>   compressBound(sourceLen).  Upon exit, destLen is the actual size of the
>   compressed buffer.
>
>     compress returns Z_OK if success, Z_MEM_ERROR if there was not
>   enough memory, Z_BUF_ERROR if there was not enough room in the output
>   buffer.
>*/
>
>ZEXTERN int ZEXPORT compress2 OF((Bytef *dest,   uLongf *destLen,
>                                  const Bytef *source, uLong sourceLen,
>                                  int level));
>/*
>     Compresses the source buffer into the destination buffer.  The level
>   parameter has the same meaning as in deflateInit.  sourceLen is the byte
>   length of the source buffer.  Upon entry, destLen is the total size of the
>   destination buffer, which must be at least the value returned by
>   compressBound(sourceLen).  Upon exit, destLen is the actual size of the
>   compressed buffer.
>
>     compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
>   memory, Z_BUF_ERROR if there was not enough room in the output buffer,
>   Z_STREAM_ERROR if the level parameter is invalid.
>*/
>
>ZEXTERN uLong ZEXPORT compressBound OF((uLong sourceLen));
>/*
>     compressBound() returns an upper bound on the compressed size after
>   compress() or compress2() on sourceLen bytes.  It would be used before a
>   compress() or compress2() call to allocate the destination buffer.
>*/
>
>ZEXTERN int ZEXPORT uncompress OF((Bytef *dest,   uLongf *destLen,
>                                   const Bytef *source, uLong sourceLen));
>/*
>     Decompresses the source buffer into the destination buffer.  sourceLen is
>   the byte length of the source buffer.  Upon entry, destLen is the total size
>   of the destination buffer, which must be large enough to hold the entire
>   uncompressed data.  (The size of the uncompressed data must have been saved
>   previously by the compressor and transmitted to the decompressor by some
>   mechanism outside the scope of this compression library.) Upon exit, destLen
>   is the actual size of the uncompressed buffer.
>
>     uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
>   enough memory, Z_BUF_ERROR if there was not enough room in the output
>   buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete.
>*/
>
>
>                        /* gzip file access functions */
>
>/*
>     This library supports reading and writing files in gzip (.gz) format with
>   an interface similar to that of stdio, using the functions that start with
>   "gz".  The gzip format is different from the zlib format.  gzip is a gzip
>   wrapper, documented in RFC 1952, wrapped around a deflate stream.
>*/
>
>typedef voidp gzFile;       /* opaque gzip file descriptor */
>
>/*
>ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode));
>
>     Opens a gzip (.gz) file for reading or writing.  The mode parameter is as
>   in fopen ("rb" or "wb") but can also include a compression level ("wb9") or
>   a strategy: 'f' for filtered data as in "wb6f", 'h' for Huffman-only
>   compression as in "wb1h", 'R' for run-length encoding as in "wb1R", or 'F'
>   for fixed code compression as in "wb9F".  (See the description of
>   deflateInit2 for more information about the strategy parameter.) Also "a"
>   can be used instead of "w" to request that the gzip stream that will be
>   written be appended to the file.  "+" will result in an error, since reading
>   and writing to the same gzip file is not supported.
>
>     gzopen can be used to read a file which is not in gzip format; in this
>   case gzread will directly read from the file without decompression.
>
>     gzopen returns NULL if the file could not be opened, if there was
>   insufficient memory to allocate the gzFile state, or if an invalid mode was
>   specified (an 'r', 'w', or 'a' was not provided, or '+' was provided).
>   errno can be checked to determine if the reason gzopen failed was that the
>   file could not be opened.
>*/
>
>ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode));
>/*
>     gzdopen associates a gzFile with the file descriptor fd.  File descriptors
>   are obtained from calls like open, dup, creat, pipe or fileno (if the file
>   has been previously opened with fopen).  The mode parameter is as in gzopen.
>
>     The next call of gzclose on the returned gzFile will also close the file
>   descriptor fd, just like fclose(fdopen(fd, mode)) closes the file descriptor
>   fd.  If you want to keep fd open, use fd = dup(fd_keep); gz = gzdopen(fd,
>   mode);.  The duplicated descriptor should be saved to avoid a leak, since
>   gzdopen does not close fd if it fails.
>
>     gzdopen returns NULL if there was insufficient memory to allocate the
>   gzFile state, if an invalid mode was specified (an 'r', 'w', or 'a' was not
>   provided, or '+' was provided), or if fd is -1.  The file descriptor is not
>   used until the next gz* read, write, seek, or close operation, so gzdopen
>   will not detect if fd is invalid (unless fd is -1).
>*/
>
>ZEXTERN int ZEXPORT gzbuffer OF((gzFile file, unsigned size));
>/*
>     Set the internal buffer size used by this library's functions.  The
>   default buffer size is 8192 bytes.  This function must be called after
>   gzopen() or gzdopen(), and before any other calls that read or write the
>   file.  The buffer memory allocation is always deferred to the first read or
>   write.  Two buffers are allocated, either both of the specified size when
>   writing, or one of the specified size and the other twice that size when
>   reading.  A larger buffer size of, for example, 64K or 128K bytes will
>   noticeably increase the speed of decompression (reading).
>
>     The new buffer size also affects the maximum length for gzprintf().
>
>     gzbuffer() returns 0 on success, or -1 on failure, such as being called
>   too late.
>*/
>
>ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));
>/*
>     Dynamically update the compression level or strategy.  See the description
>   of deflateInit2 for the meaning of these parameters.
>
>     gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not
>   opened for writing.
>*/
>
>ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));
>/*
>     Reads the given number of uncompressed bytes from the compressed file.  If
>   the input file was not in gzip format, gzread copies the given number of
>   bytes into the buffer.
>
>     After reaching the end of a gzip stream in the input, gzread will continue
>   to read, looking for another gzip stream, or failing that, reading the rest
>   of the input file directly without decompression.  The entire input file
>   will be read if gzread is called until it returns less than the requested
>   len.
>
>     gzread returns the number of uncompressed bytes actually read, less than
>   len for end of file, or -1 for error.
>*/
>
>ZEXTERN int ZEXPORT gzwrite OF((gzFile file,
>                                voidpc buf, unsigned len));
>/*
>     Writes the given number of uncompressed bytes into the compressed file.
>   gzwrite returns the number of uncompressed bytes written or 0 in case of
>   error.
>*/
>
>ZEXTERN int ZEXPORTVA gzprintf OF((gzFile file, const char *format, ...));
>/*
>     Converts, formats, and writes the arguments to the compressed file under
>   control of the format string, as in fprintf.  gzprintf returns the number of
>   uncompressed bytes actually written, or 0 in case of error.  The number of
>   uncompressed bytes written is limited to 8191, or one less than the buffer
>   size given to gzbuffer().  The caller should assure that this limit is not
>   exceeded.  If it is exceeded, then gzprintf() will return an error (0) with
>   nothing written.  In this case, there may also be a buffer overflow with
>   unpredictable consequences, which is possible only if zlib was compiled with
>   the insecure functions sprintf() or vsprintf() because the secure snprintf()
>   or vsnprintf() functions were not available.  This can be determined using
>   zlibCompileFlags().
>*/
>
>ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));
>/*
>     Writes the given null-terminated string to the compressed file, excluding
>   the terminating null character.
>
>     gzputs returns the number of characters written, or -1 in case of error.
>*/
>
>ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));
>/*
>     Reads bytes from the compressed file until len-1 characters are read, or a
>   newline character is read and transferred to buf, or an end-of-file
>   condition is encountered.  If any characters are read or if len == 1, the
>   string is terminated with a null character.  If no characters are read due
>   to an end-of-file or len < 1, then the buffer is left untouched.
>
>     gzgets returns buf which is a null-terminated string, or it returns NULL
>   for end-of-file or in case of error.  If there was an error, the contents at
>   buf are indeterminate.
>*/
>
>ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c));
>/*
>     Writes c, converted to an unsigned char, into the compressed file.  gzputc
>   returns the value that was written, or -1 in case of error.
>*/
>
>ZEXTERN int ZEXPORT gzgetc OF((gzFile file));
>/*
>     Reads one byte from the compressed file.  gzgetc returns this byte or -1
>   in case of end of file or error.
>*/
>
>ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file));
>/*
>     Push one character back onto the stream to be read as the first character
>   on the next read.  At least one character of push-back is allowed.
>   gzungetc() returns the character pushed, or -1 on failure.  gzungetc() will
>   fail if c is -1, and may fail if a character has been pushed but not read
>   yet.  If gzungetc is used immediately after gzopen or gzdopen, at least the
>   output buffer size of pushed characters is allowed.  (See gzbuffer above.)
>   The pushed character will be discarded if the stream is repositioned with
>   gzseek() or gzrewind().
>*/
>
>ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush));
>/*
>     Flushes all pending output into the compressed file.  The parameter flush
>   is as in the deflate() function.  The return value is the zlib error number
>   (see function gzerror below).  gzflush is only permitted when writing.
>
>     If the flush parameter is Z_FINISH, the remaining data is written and the
>   gzip stream is completed in the output.  If gzwrite() is called again, a new
>   gzip stream will be started in the output.  gzread() is able to read such
>   concatented gzip streams.
>
>     gzflush should be called only when strictly necessary because it will
>   degrade compression if called too often.
>*/
>
>/*
>ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file,
>                                   z_off_t offset, int whence));
>
>     Sets the starting position for the next gzread or gzwrite on the given
>   compressed file.  The offset represents a number of bytes in the
>   uncompressed data stream.  The whence parameter is defined as in lseek(2);
>   the value SEEK_END is not supported.
>
>     If the file is opened for reading, this function is emulated but can be
>   extremely slow.  If the file is opened for writing, only forward seeks are
>   supported; gzseek then compresses a sequence of zeroes up to the new
>   starting position.
>
>     gzseek returns the resulting offset location as measured in bytes from
>   the beginning of the uncompressed stream, or -1 in case of error, in
>   particular if the file is opened for writing and the new starting position
>   would be before the current position.
>*/
>
>ZEXTERN int ZEXPORT    gzrewind OF((gzFile file));
>/*
>     Rewinds the given file. This function is supported only for reading.
>
>     gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET)
>*/
>
>/*
>ZEXTERN z_off_t ZEXPORT    gztell OF((gzFile file));
>
>     Returns the starting position for the next gzread or gzwrite on the given
>   compressed file.  This position represents a number of bytes in the
>   uncompressed data stream, and is zero when starting, even if appending or
>   reading a gzip stream from the middle of a file using gzdopen().
>
>     gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)
>*/
>
>/*
>ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile file));
>
>     Returns the current offset in the file being read or written.  This offset
>   includes the count of bytes that precede the gzip stream, for example when
>   appending or when using gzdopen() for reading.  When reading, the offset
>   does not include as yet unused buffered input.  This information can be used
>   for a progress indicator.  On error, gzoffset() returns -1.
>*/
>
>ZEXTERN int ZEXPORT gzeof OF((gzFile file));
>/*
>     Returns true (1) if the end-of-file indicator has been set while reading,
>   false (0) otherwise.  Note that the end-of-file indicator is set only if the
>   read tried to go past the end of the input, but came up short.  Therefore,
>   just like feof(), gzeof() may return false even if there is no more data to
>   read, in the event that the last read request was for the exact number of
>   bytes remaining in the input file.  This will happen if the input file size
>   is an exact multiple of the buffer size.
>
>     If gzeof() returns true, then the read functions will return no more data,
>   unless the end-of-file indicator is reset by gzclearerr() and the input file
>   has grown since the previous end of file was detected.
>*/
>
>ZEXTERN int ZEXPORT gzdirect OF((gzFile file));
>/*
>     Returns true (1) if file is being copied directly while reading, or false
>   (0) if file is a gzip stream being decompressed.  This state can change from
>   false to true while reading the input file if the end of a gzip stream is
>   reached, but is followed by data that is not another gzip stream.
>
>     If the input file is empty, gzdirect() will return true, since the input
>   does not contain a gzip stream.
>
>     If gzdirect() is used immediately after gzopen() or gzdopen() it will
>   cause buffers to be allocated to allow reading the file to determine if it
>   is a gzip file.  Therefore if gzbuffer() is used, it should be called before
>   gzdirect().
>*/
>
>ZEXTERN int ZEXPORT    gzclose OF((gzFile file));
>/*
>     Flushes all pending output if necessary, closes the compressed file and
>   deallocates the (de)compression state.  Note that once file is closed, you
>   cannot call gzerror with file, since its structures have been deallocated.
>   gzclose must not be called more than once on the same file, just as free
>   must not be called more than once on the same allocation.
>
>     gzclose will return Z_STREAM_ERROR if file is not valid, Z_ERRNO on a
>   file operation error, or Z_OK on success.
>*/
>
>ZEXTERN int ZEXPORT gzclose_r OF((gzFile file));
>ZEXTERN int ZEXPORT gzclose_w OF((gzFile file));
>/*
>     Same as gzclose(), but gzclose_r() is only for use when reading, and
>   gzclose_w() is only for use when writing or appending.  The advantage to
>   using these instead of gzclose() is that they avoid linking in zlib
>   compression or decompression code that is not used when only reading or only
>   writing respectively.  If gzclose() is used, then both compression and
>   decompression code will be included the application when linking to a static
>   zlib library.
>*/
>
>ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));
>/*
>     Returns the error message for the last error which occurred on the given
>   compressed file.  errnum is set to zlib error number.  If an error occurred
>   in the file system and not in the compression library, errnum is set to
>   Z_ERRNO and the application may consult errno to get the exact error code.
>
>     The application must not modify the returned string.  Future calls to
>   this function may invalidate the previously returned string.  If file is
>   closed, then the string previously returned by gzerror will no longer be
>   available.
>
>     gzerror() should be used to distinguish errors from end-of-file for those
>   functions above that do not distinguish those cases in their return values.
>*/
>
>ZEXTERN void ZEXPORT gzclearerr OF((gzFile file));
>/*
>     Clears the error and end-of-file flags for file.  This is analogous to the
>   clearerr() function in stdio.  This is useful for continuing to read a gzip
>   file that is being written concurrently.
>*/
>
>
>                        /* checksum functions */
>
>/*
>     These functions are not related to compression but are exported
>   anyway because they might be useful in applications using the compression
>   library.
>*/
>
>ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
>/*
>     Update a running Adler-32 checksum with the bytes buf[0..len-1] and
>   return the updated checksum.  If buf is Z_NULL, this function returns the
>   required initial value for the checksum.
>
>     An Adler-32 checksum is almost as reliable as a CRC32 but can be computed
>   much faster.
>
>   Usage example:
>
>     uLong adler = adler32(0L, Z_NULL, 0);
>
>     while (read_buffer(buffer, length) != EOF) {
>       adler = adler32(adler, buffer, length);
>     }
>     if (adler != original_adler) error();
>*/
>
>/*
>ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2,
>                                          z_off_t len2));
>
>     Combine two Adler-32 checksums into one.  For two sequences of bytes, seq1
>   and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for
>   each, adler1 and adler2.  adler32_combine() returns the Adler-32 checksum of
>   seq1 and seq2 concatenated, requiring only adler1, adler2, and len2.
>*/
>
>ZEXTERN uLong ZEXPORT crc32   OF((uLong crc, const Bytef *buf, uInt len));
>/*
>     Update a running CRC-32 with the bytes buf[0..len-1] and return the
>   updated CRC-32.  If buf is Z_NULL, this function returns the required
>   initial value for the for the crc.  Pre- and post-conditioning (one's
>   complement) is performed within this function so it shouldn't be done by the
>   application.
>
>   Usage example:
>
>     uLong crc = crc32(0L, Z_NULL, 0);
>
>     while (read_buffer(buffer, length) != EOF) {
>       crc = crc32(crc, buffer, length);
>     }
>     if (crc != original_crc) error();
>*/
>
>/*
>ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, z_off_t len2));
>
>     Combine two CRC-32 check values into one.  For two sequences of bytes,
>   seq1 and seq2 with lengths len1 and len2, CRC-32 check values were
>   calculated for each, crc1 and crc2.  crc32_combine() returns the CRC-32
>   check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and
>   len2.
>*/
>
>
>                        /* various hacks, don't look :) */
>
>/* deflateInit and inflateInit are macros to allow checking the zlib version
> * and the compiler's view of z_stream:
> */
>ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,
>                                     const char *version, int stream_size));
>ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,
>                                     const char *version, int stream_size));
>ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int  level, int  method,
>                                      int windowBits, int memLevel,
>                                      int strategy, const char *version,
>                                      int stream_size));
>ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int  windowBits,
>                                      const char *version, int stream_size));
>ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits,
>                                         unsigned char FAR *window,
>                                         const char *version,
>                                         int stream_size));
>#define deflateInit(strm, level) \
>        deflateInit_((strm), (level),       ZLIB_VERSION, sizeof(z_stream))
>#define inflateInit(strm) \
>        inflateInit_((strm),                ZLIB_VERSION, sizeof(z_stream))
>#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
>        deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
>                      (strategy),           ZLIB_VERSION, sizeof(z_stream))
>#define inflateInit2(strm, windowBits) \
>        inflateInit2_((strm), (windowBits), ZLIB_VERSION, sizeof(z_stream))
>#define inflateBackInit(strm, windowBits, window) \
>        inflateBackInit_((strm), (windowBits), (window), \
>                                            ZLIB_VERSION, sizeof(z_stream))
>
>/* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or
> * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if
> * both are true, the application gets the *64 functions, and the regular
> * functions are changed to 64 bits) -- in case these are set on systems
> * without large file support, _LFS64_LARGEFILE must also be true
> */
>#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
>   ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
>   ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
>   ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
>   ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
>   ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t));
>   ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t));
>#endif
>
>#if !defined(ZLIB_INTERNAL) && _FILE_OFFSET_BITS-0 == 64 && _LFS64_LARGEFILE-0
>#  define gzopen gzopen64
>#  define gzseek gzseek64
>#  define gztell gztell64
>#  define gzoffset gzoffset64
>#  define adler32_combine adler32_combine64
>#  define crc32_combine crc32_combine64
>#  ifdef _LARGEFILE64_SOURCE
>     ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
>     ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, z_off_t, int));
>     ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile));
>     ZEXTERN z_off_t ZEXPORT gzoffset64 OF((gzFile));
>     ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
>     ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
>#  endif
>#else
>   ZEXTERN gzFile ZEXPORT gzopen OF((const char *, const char *));
>   ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile, z_off_t, int));
>   ZEXTERN z_off_t ZEXPORT gztell OF((gzFile));
>   ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile));
>   ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t));
>   ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));
>#endif
>
>/* hack for buggy compilers */
>#if !defined(ZUTIL_H) && !defined(NO_DUMMY_DECL)
>    struct internal_state {int dummy;};
>#endif
>
>/* undocumented functions */
>ZEXTERN const char   * ZEXPORT zError           OF((int));
>ZEXTERN int            ZEXPORT inflateSyncPoint OF((z_streamp));
>ZEXTERN const uLongf * ZEXPORT get_crc_table    OF((void));
>ZEXTERN int            ZEXPORT inflateUndermine OF((z_streamp, int));
>
>#ifdef __cplusplus
>}
>#endif
>
>#endif /* ZLIB_H */

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Attachments on bug 33710: 42706 | 42708 | 42709

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