|
<html><head><title>dlib C++ Library - gzguts.h</title></head><body bgcolor='white'><pre> |
|
<font color='#009900'>/* gzguts.h -- zlib internal header definitions for gz* operations |
|
* Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler |
|
* For conditions of distribution and use, see copyright notice in zlib.h |
|
*/</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> _MSC_VER |
|
<font color='#009900'>// Disable the following warnings for Visual Studio |
|
</font><font color='#009900'>// This is a warning you get from visual studio 2005 about things in the standard C++ |
|
</font><font color='#009900'>// library being "deprecated." I checked the C++ standard and it doesn't say jack |
|
</font><font color='#009900'>// about any of them (I checked the searchable PDF). So this warning is total Bunk. |
|
</font><font color='#0000FF'>#pragma</font> warning<font face='Lucida Console'>(</font>disable : <font color='#979000'>4996</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> _LARGEFILE64_SOURCE |
|
# ifndef _LARGEFILE_SOURCE |
|
# define _LARGEFILE_SOURCE <font color='#979000'>1</font> |
|
# endif |
|
# ifdef _FILE_OFFSET_BITS |
|
# undef _FILE_OFFSET_BITS |
|
# endif |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> HAVE_HIDDEN |
|
# define ZLIB_INTERNAL <b><a name='__attribute__'></a>__attribute__</b><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#BB00BB'>visibility</font> <font face='Lucida Console'>(</font>"<font color='#CC0000'>hidden</font>"<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#else</font> |
|
# define ZLIB_INTERNAL |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#include</font> <font color='#5555FF'><</font>stdio.h<font color='#5555FF'>></font> |
|
<font color='#0000FF'>#include</font> "<a style='text-decoration:none' href='zlib.h.html'>zlib.h</a>" |
|
<font color='#0000FF'>#ifdef</font> STDC |
|
# include <font color='#5555FF'><</font>string.h<font color='#5555FF'>></font> |
|
# include <font color='#5555FF'><</font>stdlib.h<font color='#5555FF'>></font> |
|
# include <font color='#5555FF'><</font>limits.h<font color='#5555FF'>></font> |
|
<font color='#0000FF'>#endif</font> |
|
<font color='#0000FF'>#include</font> <font color='#5555FF'><</font>fcntl.h<font color='#5555FF'>></font> |
|
|
|
<font color='#0000FF'>#ifdef</font> _WIN32 |
|
# include <font color='#5555FF'><</font>stddef.h<font color='#5555FF'>></font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>__TURBOC__<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> defined<font face='Lucida Console'>(</font>_MSC_VER<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> defined<font face='Lucida Console'>(</font>_WIN32<font face='Lucida Console'>)</font> |
|
# include <font color='#5555FF'><</font>io.h<font color='#5555FF'>></font> |
|
<font color='#0000FF'>#else</font> |
|
# include <font color='#5555FF'><</font>unistd.h<font color='#5555FF'>></font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> WINAPI_FAMILY |
|
# define open _open |
|
# define read _read |
|
# define write _write |
|
# define close _close |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifdef</font> NO_DEFLATE <font color='#009900'>/* for compatibility with old definition */</font> |
|
# define NO_GZCOMPRESS |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>STDC99<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> <font face='Lucida Console'>(</font>defined<font face='Lucida Console'>(</font>__TURBOC__<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> __TURBOC__ <font color='#5555FF'>></font><font color='#5555FF'>=</font> <font color='#979000'>0x550</font><font face='Lucida Console'>)</font> |
|
# ifndef HAVE_VSNPRINTF |
|
# define HAVE_VSNPRINTF |
|
# endif |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>__CYGWIN__<font face='Lucida Console'>)</font> |
|
# ifndef HAVE_VSNPRINTF |
|
# define HAVE_VSNPRINTF |
|
# endif |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#if</font> defined<font face='Lucida Console'>(</font>MSDOS<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> defined<font face='Lucida Console'>(</font>__BORLANDC__<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> <font face='Lucida Console'>(</font>BORLANDC <font color='#5555FF'>></font> <font color='#979000'>0x410</font><font face='Lucida Console'>)</font> |
|
# ifndef HAVE_VSNPRINTF |
|
# define HAVE_VSNPRINTF |
|
# endif |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifndef</font> HAVE_VSNPRINTF |
|
# ifdef MSDOS |
|
<font color='#009900'>/* vsnprintf may exist on some MS-DOS compilers (DJGPP?), |
|
but for now we just assume it doesn't. */</font> |
|
# define NO_vsnprintf |
|
# endif |
|
# ifdef __TURBOC__ |
|
# define NO_vsnprintf |
|
# endif |
|
# ifdef WIN32 |
|
<font color='#009900'>/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */</font> |
|
# <font color='#0000FF'>if</font> <font color='#5555FF'>!</font><b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>vsnprintf<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> <font color='#5555FF'>!</font><b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>NO_vsnprintf<font face='Lucida Console'>)</font> |
|
# <font color='#0000FF'>if</font> <font color='#5555FF'>!</font><b><a name='defined'></a>defined</b><font face='Lucida Console'>(</font>_MSC_VER<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> <font face='Lucida Console'>(</font> <font color='#BB00BB'>defined</font><font face='Lucida Console'>(</font>_MSC_VER<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> _MSC_VER <font color='#5555FF'><</font> <font color='#979000'>1500</font> <font face='Lucida Console'>)</font> |
|
# define vsnprintf _vsnprintf |
|
# endif |
|
# endif |
|
# endif |
|
# ifdef __SASC |
|
# define NO_vsnprintf |
|
# endif |
|
# ifdef VMS |
|
# define NO_vsnprintf |
|
# endif |
|
# ifdef __OS400__ |
|
# define NO_vsnprintf |
|
# endif |
|
# ifdef __MVS__ |
|
# define NO_vsnprintf |
|
# endif |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* unlike snprintf (which is required in C99, yet still not supported by |
|
Microsoft more than a decade later!), _snprintf does not guarantee null |
|
termination of the result -- however this is only used in gzlib.c where |
|
the result is assured to fit in the space provided */</font> |
|
<font color='#0000FF'>#ifdef</font> _MSC_VER |
|
# define snprintf _snprintf |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#0000FF'>#ifndef</font> local |
|
# define local <font color='#0000FF'>static</font> |
|
<font color='#0000FF'>#endif</font> |
|
<font color='#009900'>/* compile with -Dlocal if your debugger can't find static symbols */</font> |
|
|
|
<font color='#009900'>/* gz* functions always use library allocation functions */</font> |
|
<font color='#0000FF'>#ifndef</font> STDC |
|
<font color='#0000FF'>extern</font> voidp malloc <b><a name='OF'></a>OF</b><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>uInt size<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>extern</font> <font color='#0000FF'><u>void</u></font> free <b><a name='OF'></a>OF</b><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>voidpf ptr<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* get errno and strerror definition */</font> |
|
<font color='#0000FF'>#if</font> defined UNDER_CE |
|
# include <font color='#5555FF'><</font>windows.h<font color='#5555FF'>></font> |
|
# define <b><a name='zstrerror'></a>zstrerror</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font> <b><a name='gz_strwinerror'></a>gz_strwinerror</b><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>DWORD<font face='Lucida Console'>)</font><font color='#BB00BB'>GetLastError</font><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#else</font> |
|
# ifndef NO_STRERROR |
|
# include <font color='#5555FF'><</font>errno.h<font color='#5555FF'>></font> |
|
# define <b><a name='zstrerror'></a>zstrerror</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font> <b><a name='strerror'></a>strerror</b><font face='Lucida Console'>(</font>errno<font face='Lucida Console'>)</font> |
|
# <font color='#0000FF'>else</font> |
|
# define <b><a name='zstrerror'></a>zstrerror</b><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font> "<font color='#CC0000'>stdio error (consult errno)</font>" |
|
# endif |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* provide prototypes for these when building zlib without LFS */</font> |
|
<font color='#0000FF'>#if</font> <font color='#5555FF'>!</font>defined<font face='Lucida Console'>(</font>_LARGEFILE64_SOURCE<font face='Lucida Console'>)</font> <font color='#5555FF'>|</font><font color='#5555FF'>|</font> _LFS64_LARGEFILE<font color='#5555FF'>-</font><font color='#979000'>0</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#979000'>0</font> |
|
ZEXTERN gzFile ZEXPORT gzopen64 <b><a name='OF'></a>OF</b><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'>const</font> <font color='#0000FF'><u>char</u></font> <font color='#5555FF'>*</font>, <font color='#0000FF'>const</font> <font color='#0000FF'><u>char</u></font> <font color='#5555FF'>*</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>; |
|
ZEXTERN z_off64_t ZEXPORT gzseek64 <b><a name='OF'></a>OF</b><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>gzFile, z_off64_t, <font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>; |
|
ZEXTERN z_off64_t ZEXPORT gztell64 <b><a name='OF'></a>OF</b><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>gzFile<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>; |
|
ZEXTERN z_off64_t ZEXPORT gzoffset64 <b><a name='OF'></a>OF</b><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>gzFile<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* default memLevel */</font> |
|
<font color='#0000FF'>#if</font> MAX_MEM_LEVEL <font color='#5555FF'>></font><font color='#5555FF'>=</font> <font color='#979000'>8</font> |
|
# define DEF_MEM_LEVEL <font color='#979000'>8</font> |
|
<font color='#0000FF'>#else</font> |
|
# define DEF_MEM_LEVEL MAX_MEM_LEVEL |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* default i/o buffer size -- double this for output when reading (this and |
|
twice this must be able to fit in an unsigned type) */</font> |
|
<font color='#0000FF'>#define</font> GZBUFSIZE <font color='#979000'>8192</font> |
|
|
|
<font color='#009900'>/* gzip modes, also provide a little integrity check on the passed structure */</font> |
|
<font color='#0000FF'>#define</font> GZ_NONE <font color='#979000'>0</font> |
|
<font color='#0000FF'>#define</font> GZ_READ <font color='#979000'>7247</font> |
|
<font color='#0000FF'>#define</font> GZ_WRITE <font color='#979000'>31153</font> |
|
<font color='#0000FF'>#define</font> GZ_APPEND <font color='#979000'>1</font> <font color='#009900'>/* mode set to GZ_WRITE after the file is opened */</font> |
|
|
|
<font color='#009900'>/* values for gz_state how */</font> |
|
<font color='#0000FF'>#define</font> LOOK <font color='#979000'>0</font> <font color='#009900'>/* look for a gzip header */</font> |
|
<font color='#0000FF'>#define</font> COPY <font color='#979000'>1</font> <font color='#009900'>/* copy input directly */</font> |
|
<font color='#0000FF'>#define</font> GZIP <font color='#979000'>2</font> <font color='#009900'>/* decompress a gzip stream */</font> |
|
|
|
<font color='#009900'>/* internal gzip file state data structure */</font> |
|
<font color='#0000FF'>typedef</font> <font color='#0000FF'>struct</font> <b>{</b> |
|
<font color='#009900'>/* exposed contents for gzgetc() macro */</font> |
|
<font color='#0000FF'>struct</font> gzFile_s x; <font color='#009900'>/* "x" for exposed */</font> |
|
<font color='#009900'>/* x.have: number of bytes available at x.next */</font> |
|
<font color='#009900'>/* x.next: next output data to deliver or write */</font> |
|
<font color='#009900'>/* x.pos: current position in uncompressed data */</font> |
|
<font color='#009900'>/* used for both reading and writing */</font> |
|
<font color='#0000FF'><u>int</u></font> mode; <font color='#009900'>/* see gzip modes above */</font> |
|
<font color='#0000FF'><u>int</u></font> fd; <font color='#009900'>/* file descriptor */</font> |
|
<font color='#0000FF'><u>char</u></font> <font color='#5555FF'>*</font>path; <font color='#009900'>/* path or fd for error messages */</font> |
|
<font color='#0000FF'><u>unsigned</u></font> size; <font color='#009900'>/* buffer size, zero if not allocated yet */</font> |
|
<font color='#0000FF'><u>unsigned</u></font> want; <font color='#009900'>/* requested buffer size, default is GZBUFSIZE */</font> |
|
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>char</u></font> <font color='#5555FF'>*</font>in; <font color='#009900'>/* input buffer */</font> |
|
<font color='#0000FF'><u>unsigned</u></font> <font color='#0000FF'><u>char</u></font> <font color='#5555FF'>*</font>out; <font color='#009900'>/* output buffer (double-sized when reading) */</font> |
|
<font color='#0000FF'><u>int</u></font> direct; <font color='#009900'>/* 0 if processing gzip, 1 if transparent */</font> |
|
<font color='#009900'>/* just for reading */</font> |
|
<font color='#0000FF'><u>int</u></font> how; <font color='#009900'>/* 0: get header, 1: copy, 2: decompress */</font> |
|
z_off64_t start; <font color='#009900'>/* where the gzip data started, for rewinding */</font> |
|
<font color='#0000FF'><u>int</u></font> eof; <font color='#009900'>/* true if end of input file reached */</font> |
|
<font color='#0000FF'><u>int</u></font> past; <font color='#009900'>/* true if read requested past end */</font> |
|
<font color='#009900'>/* just for writing */</font> |
|
<font color='#0000FF'><u>int</u></font> level; <font color='#009900'>/* compression level */</font> |
|
<font color='#0000FF'><u>int</u></font> strategy; <font color='#009900'>/* compression strategy */</font> |
|
<font color='#009900'>/* seek request */</font> |
|
z_off64_t skip; <font color='#009900'>/* amount to skip (already rewound if backwards) */</font> |
|
<font color='#0000FF'><u>int</u></font> seek; <font color='#009900'>/* true if seek request pending */</font> |
|
<font color='#009900'>/* error information */</font> |
|
<font color='#0000FF'><u>int</u></font> err; <font color='#009900'>/* error code */</font> |
|
<font color='#0000FF'><u>char</u></font> <font color='#5555FF'>*</font>msg; <font color='#009900'>/* error message */</font> |
|
<font color='#009900'>/* zlib inflate or deflate stream */</font> |
|
z_stream strm; <font color='#009900'>/* stream structure in-place (not a pointer) */</font> |
|
<b>}</b> gz_state; |
|
<font color='#0000FF'>typedef</font> gz_state FAR <font color='#5555FF'>*</font>gz_statep; |
|
|
|
<font color='#009900'>/* shared functions */</font> |
|
<font color='#0000FF'><u>void</u></font> ZLIB_INTERNAL gz_error <b><a name='OF'></a>OF</b><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>gz_statep, <font color='#0000FF'><u>int</u></font>, <font color='#0000FF'>const</font> <font color='#0000FF'><u>char</u></font> <font color='#5555FF'>*</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#if</font> defined UNDER_CE |
|
<font color='#0000FF'><u>char</u></font> ZLIB_INTERNAL <font color='#5555FF'>*</font>gz_strwinerror <b><a name='OF'></a>OF</b><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font>DWORD error<font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>; |
|
<font color='#0000FF'>#endif</font> |
|
|
|
<font color='#009900'>/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t |
|
value -- needed when comparing unsigned to z_off64_t, which is signed |
|
(possible z_off64_t types off_t, off64_t, and long are all signed) */</font> |
|
<font color='#0000FF'>#ifdef</font> INT_MAX |
|
# define <b><a name='GT_OFF'></a>GT_OFF</b><font face='Lucida Console'>(</font>x<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font color='#0000FF'>sizeof</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#0000FF'>sizeof</font><font face='Lucida Console'>(</font>z_off64_t<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> <font face='Lucida Console'>(</font>x<font face='Lucida Console'>)</font> <font color='#5555FF'>></font> INT_MAX<font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#else</font> |
|
<font color='#0000FF'><u>unsigned</u></font> ZLIB_INTERNAL gz_intmax <b><a name='OF'></a>OF</b><font face='Lucida Console'>(</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>void</u></font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font>; |
|
# define <b><a name='GT_OFF'></a>GT_OFF</b><font face='Lucida Console'>(</font>x<font face='Lucida Console'>)</font> <font face='Lucida Console'>(</font><font color='#0000FF'>sizeof</font><font face='Lucida Console'>(</font><font color='#0000FF'><u>int</u></font><font face='Lucida Console'>)</font> <font color='#5555FF'>=</font><font color='#5555FF'>=</font> <font color='#0000FF'>sizeof</font><font face='Lucida Console'>(</font>z_off64_t<font face='Lucida Console'>)</font> <font color='#5555FF'>&</font><font color='#5555FF'>&</font> <font face='Lucida Console'>(</font>x<font face='Lucida Console'>)</font> <font color='#5555FF'>></font> <font color='#BB00BB'>gz_intmax</font><font face='Lucida Console'>(</font><font face='Lucida Console'>)</font><font face='Lucida Console'>)</font> |
|
<font color='#0000FF'>#endif</font> |
|
|
|
</pre></body></html> |
