[mirror_edk2.git] / AppPkg / Applications / Python / Python-2.7.10 / PyMod-2.7.10 / Modules / zlib / gzguts.h

/* gzguts.h -- zlib internal header definitions for gz* operations\r
 * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler\r
 * For conditions of distribution and use, see copyright notice in zlib.h\r
 */\r
\r
#ifdef _LARGEFILE64_SOURCE\r
#  ifndef _LARGEFILE_SOURCE\r
#    define _LARGEFILE_SOURCE 1\r
#  endif\r
#  ifdef _FILE_OFFSET_BITS\r
#    undef _FILE_OFFSET_BITS\r
#  endif\r
#endif\r
\r
#ifdef HAVE_HIDDEN\r
#  define ZLIB_INTERNAL __attribute__((visibility ("hidden")))\r
#else\r
#  define ZLIB_INTERNAL\r
#endif\r
\r
#include <stdio.h>\r
#include "zlib.h"\r
#ifdef STDC\r
#  include <string.h>\r
#  include <stdlib.h>\r
#  include <limits.h>\r
#endif\r
#include <fcntl.h>\r
\r
#ifdef _WIN32\r
#  include <stddef.h>\r
#endif\r
\r
#if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32)\r
#  include <io.h>\r
#endif\r
\r
#ifdef WINAPI_FAMILY\r
#  define open _open\r
#  define read _read\r
#  define write _write\r
#  define close _close\r
#endif\r
\r
#ifdef NO_DEFLATE       /* for compatibility with old definition */\r
#  define NO_GZCOMPRESS\r
#endif\r
\r
#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)\r
#  ifndef HAVE_VSNPRINTF\r
#    define HAVE_VSNPRINTF\r
#  endif\r
#endif\r
\r
#if defined(__CYGWIN__)\r
#  ifndef HAVE_VSNPRINTF\r
#    define HAVE_VSNPRINTF\r
#  endif\r
#endif\r
\r
#if defined(MSDOS) && defined(__BORLANDC__) && (BORLANDC > 0x410)\r
#  ifndef HAVE_VSNPRINTF\r
#    define HAVE_VSNPRINTF\r
#  endif\r
#endif\r
\r
#ifndef HAVE_VSNPRINTF\r
#  ifdef MSDOS\r
/* vsnprintf may exist on some MS-DOS compilers (DJGPP?),\r
   but for now we just assume it doesn't. */\r
#    define NO_vsnprintf\r
#  endif\r
#  ifdef __TURBOC__\r
#    define NO_vsnprintf\r
#  endif\r
#  ifdef WIN32\r
/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */\r
#    if !defined(vsnprintf) && !defined(NO_vsnprintf)\r
#      if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )\r
#         define vsnprintf _vsnprintf\r
#      endif\r
#    endif\r
#  endif\r
#  ifdef __SASC\r
#    define NO_vsnprintf\r
#  endif\r
#  ifdef VMS\r
#    define NO_vsnprintf\r
#  endif\r
#  ifdef __OS400__\r
#    define NO_vsnprintf\r
#  endif\r
#  ifdef __MVS__\r
#    define NO_vsnprintf\r
#  endif\r
#endif\r
\r
/* unlike snprintf (which is required in C99, yet still not supported by\r
   Microsoft more than a decade later!), _snprintf does not guarantee null\r
   termination of the result -- however this is only used in gzlib.c where\r
   the result is assured to fit in the space provided */\r
#ifdef _MSC_VER\r
#  define snprintf _snprintf\r
#endif\r
\r
#ifndef local\r
#  define local static\r
#endif\r
/* compile with -Dlocal if your debugger can't find static symbols */\r
\r
/* gz* functions always use library allocation functions */\r
#ifndef STDC\r
  extern voidp  malloc OF((uInt size));\r
  extern void   free   OF((voidpf ptr));\r
#endif\r
\r
/* get errno and strerror definition */\r
#if defined UNDER_CE\r
#  include <windows.h>\r
#  define zstrerror() gz_strwinerror((DWORD)GetLastError())\r
#else\r
#  ifndef NO_STRERROR\r
#    include <errno.h>\r
#    define zstrerror() strerror(errno)\r
#  else\r
#    define zstrerror() "stdio error (consult errno)"\r
#  endif\r
#endif\r
\r
/* provide prototypes for these when building zlib without LFS */\r
#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0\r
    ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));\r
    ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));\r
    ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));\r
    ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));\r
#endif\r
\r
/* default memLevel */\r
#if MAX_MEM_LEVEL >= 8\r
#  define DEF_MEM_LEVEL 8\r
#else\r
#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL\r
#endif\r
\r
/* default i/o buffer size -- double this for output when reading (this and\r
   twice this must be able to fit in an unsigned type) */\r
#define GZBUFSIZE 8192\r
\r
/* gzip modes, also provide a little integrity check on the passed structure */\r
#define GZ_NONE 0\r
#define GZ_READ 7247\r
#define GZ_WRITE 31153\r
#define GZ_APPEND 1     /* mode set to GZ_WRITE after the file is opened */\r
\r
/* values for gz_state how */\r
#define LOOK 0      /* look for a gzip header */\r
#define COPY 1      /* copy input directly */\r
#define GZIP 2      /* decompress a gzip stream */\r
\r
/* internal gzip file state data structure */\r
typedef struct {\r
        /* exposed contents for gzgetc() macro */\r
    struct gzFile_s x;      /* "x" for exposed */\r
                            /* x.have: number of bytes available at x.next */\r
                            /* x.next: next output data to deliver or write */\r
                            /* x.pos: current position in uncompressed data */\r
        /* used for both reading and writing */\r
    int mode;               /* see gzip modes above */\r
    int fd;                 /* file descriptor */\r
    char *path;             /* path or fd for error messages */\r
    unsigned size;          /* buffer size, zero if not allocated yet */\r
    unsigned want;          /* requested buffer size, default is GZBUFSIZE */\r
    unsigned char *in;      /* input buffer */\r
    unsigned char *out;     /* output buffer (double-sized when reading) */\r
    int direct;             /* 0 if processing gzip, 1 if transparent */\r
        /* just for reading */\r
    int how;                /* 0: get header, 1: copy, 2: decompress */\r
    z_off64_t start;        /* where the gzip data started, for rewinding */\r
    int eof;                /* true if end of input file reached */\r
    int past;               /* true if read requested past end */\r
        /* just for writing */\r
    int level;              /* compression level */\r
    int strategy;           /* compression strategy */\r
        /* seek request */\r
    z_off64_t skip;         /* amount to skip (already rewound if backwards) */\r
    int seek;               /* true if seek request pending */\r
        /* error information */\r
    int err;                /* error code */\r
    char *msg;              /* error message */\r
        /* zlib inflate or deflate stream */\r
    z_stream strm;          /* stream structure in-place (not a pointer) */\r
} gz_state;\r
typedef gz_state FAR *gz_statep;\r
\r
/* shared functions */\r
void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *));\r
#if defined UNDER_CE\r
char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error));\r
#endif\r
\r
/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t\r
   value -- needed when comparing unsigned to z_off64_t, which is signed\r
   (possible z_off64_t types off_t, off64_t, and long are all signed) */\r
#ifdef INT_MAX\r
#  define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)\r
#else\r
unsigned ZLIB_INTERNAL gz_intmax OF((void));\r
#  define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())\r
#endif\r
Commit	Line	Data
3ec97ca4 DM	1	/* gzguts.h -- zlib internal header definitions for gz* operations\r
	2	* Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler\r
	3	* For conditions of distribution and use, see copyright notice in zlib.h\r
	4	*/\r
	5	\r
	6	#ifdef _LARGEFILE64_SOURCE\r
	7	# ifndef _LARGEFILE_SOURCE\r
	8	# define _LARGEFILE_SOURCE 1\r
	9	# endif\r
	10	# ifdef _FILE_OFFSET_BITS\r
	11	# undef _FILE_OFFSET_BITS\r
	12	# endif\r
	13	#endif\r
	14	\r
	15	#ifdef HAVE_HIDDEN\r
	16	# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))\r
	17	#else\r
	18	# define ZLIB_INTERNAL\r
	19	#endif\r
	20	\r
	21	#include <stdio.h>\r
	22	#include "zlib.h"\r
	23	#ifdef STDC\r
	24	# include <string.h>\r
	25	# include <stdlib.h>\r
	26	# include <limits.h>\r
	27	#endif\r
	28	#include <fcntl.h>\r
	29	\r
	30	#ifdef _WIN32\r
	31	# include <stddef.h>\r
	32	#endif\r
	33	\r
	34	#if defined(__TURBOC__) \|\| defined(_MSC_VER) \|\| defined(_WIN32)\r
	35	# include <io.h>\r
	36	#endif\r
	37	\r
	38	#ifdef WINAPI_FAMILY\r
	39	# define open _open\r
	40	# define read _read\r
	41	# define write _write\r
	42	# define close _close\r
	43	#endif\r
	44	\r
	45	#ifdef NO_DEFLATE /* for compatibility with old definition */\r
	46	# define NO_GZCOMPRESS\r
	47	#endif\r
	48	\r
	49	#if defined(STDC99) \|\| (defined(__TURBOC__) && __TURBOC__ >= 0x550)\r
	50	# ifndef HAVE_VSNPRINTF\r
	51	# define HAVE_VSNPRINTF\r
	52	# endif\r
	53	#endif\r
	54	\r
	55	#if defined(__CYGWIN__)\r
	56	# ifndef HAVE_VSNPRINTF\r
	57	# define HAVE_VSNPRINTF\r
	58	# endif\r
	59	#endif\r
	60	\r
	61	#if defined(MSDOS) && defined(__BORLANDC__) && (BORLANDC > 0x410)\r
	62	# ifndef HAVE_VSNPRINTF\r
	63	# define HAVE_VSNPRINTF\r
	64	# endif\r
65	#endif\r
66	\r
67	#ifndef HAVE_VSNPRINTF\r
68	# ifdef MSDOS\r
69	/* vsnprintf may exist on some MS-DOS compilers (DJGPP?),\r
70	but for now we just assume it doesn't. */\r
71	# define NO_vsnprintf\r
72	# endif\r
73	# ifdef __TURBOC__\r
74	# define NO_vsnprintf\r
75	# endif\r
76	# ifdef WIN32\r
77	/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */\r
78	# if !defined(vsnprintf) && !defined(NO_vsnprintf)\r
79	# if !defined(_MSC_VER) \|\| ( defined(_MSC_VER) && _MSC_VER < 1500 )\r
80	# define vsnprintf _vsnprintf\r
81	# endif\r
82	# endif\r
83	# endif\r
84	# ifdef __SASC\r
85	# define NO_vsnprintf\r
86	# endif\r
87	# ifdef VMS\r
88	# define NO_vsnprintf\r
89	# endif\r
90	# ifdef __OS400__\r
91	# define NO_vsnprintf\r
92	# endif\r
93	# ifdef __MVS__\r
94	# define NO_vsnprintf\r
95	# endif\r
96	#endif\r
97	\r
98	/* unlike snprintf (which is required in C99, yet still not supported by\r
99	Microsoft more than a decade later!), _snprintf does not guarantee null\r
100	termination of the result -- however this is only used in gzlib.c where\r
101	the result is assured to fit in the space provided */\r
102	#ifdef _MSC_VER\r
103	# define snprintf _snprintf\r
104	#endif\r
105	\r
106	#ifndef local\r
107	# define local static\r
108	#endif\r
109	/* compile with -Dlocal if your debugger can't find static symbols */\r
110	\r
111	/* gz* functions always use library allocation functions */\r
112	#ifndef STDC\r
113	extern voidp malloc OF((uInt size));\r
114	extern void free OF((voidpf ptr));\r
115	#endif\r
116	\r
117	/* get errno and strerror definition */\r
118	#if defined UNDER_CE\r
119	# include <windows.h>\r
120	# define zstrerror() gz_strwinerror((DWORD)GetLastError())\r
121	#else\r
122	# ifndef NO_STRERROR\r
123	# include <errno.h>\r
124	# define zstrerror() strerror(errno)\r
125	# else\r
126	# define zstrerror() "stdio error (consult errno)"\r
127	# endif\r
128	#endif\r
129	\r
130	/* provide prototypes for these when building zlib without LFS */\r
131	#if !defined(_LARGEFILE64_SOURCE) \|\| _LFS64_LARGEFILE-0 == 0\r
132	ZEXTERN gzFile ZEXPORT gzopen64 OF((const char , const char ));\r
133	ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));\r
134	ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));\r
135	ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));\r
136	#endif\r
137	\r
138	/* default memLevel */\r
139	#if MAX_MEM_LEVEL >= 8\r
140	# define DEF_MEM_LEVEL 8\r
141	#else\r
142	# define DEF_MEM_LEVEL MAX_MEM_LEVEL\r
143	#endif\r
144	\r
145	/* default i/o buffer size -- double this for output when reading (this and\r
146	twice this must be able to fit in an unsigned type) */\r
147	#define GZBUFSIZE 8192\r
148	\r
149	/* gzip modes, also provide a little integrity check on the passed structure */\r
150	#define GZ_NONE 0\r
151	#define GZ_READ 7247\r
152	#define GZ_WRITE 31153\r
153	#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */\r
154	\r
155	/* values for gz_state how */\r
156	#define LOOK 0 /* look for a gzip header */\r
157	#define COPY 1 /* copy input directly */\r
158	#define GZIP 2 /* decompress a gzip stream */\r
159	\r
160	/* internal gzip file state data structure */\r
161	typedef struct {\r
162	/* exposed contents for gzgetc() macro */\r
163	struct gzFile_s x; /* "x" for exposed */\r
164	/* x.have: number of bytes available at x.next */\r
165	/* x.next: next output data to deliver or write */\r
166	/* x.pos: current position in uncompressed data */\r
167	/* used for both reading and writing */\r
168	int mode; /* see gzip modes above */\r
169	int fd; /* file descriptor */\r
170	char path; / path or fd for error messages */\r
171	unsigned size; /* buffer size, zero if not allocated yet */\r
172	unsigned want; /* requested buffer size, default is GZBUFSIZE */\r
173	unsigned char in; / input buffer */\r
174	unsigned char out; / output buffer (double-sized when reading) */\r
175	int direct; /* 0 if processing gzip, 1 if transparent */\r
176	/* just for reading */\r
177	int how; /* 0: get header, 1: copy, 2: decompress */\r
178	z_off64_t start; /* where the gzip data started, for rewinding */\r
179	int eof; /* true if end of input file reached */\r
180	int past; /* true if read requested past end */\r
181	/* just for writing */\r
182	int level; /* compression level */\r
183	int strategy; /* compression strategy */\r
184	/* seek request */\r
185	z_off64_t skip; /* amount to skip (already rewound if backwards) */\r
186	int seek; /* true if seek request pending */\r
187	/* error information */\r
188	int err; /* error code */\r
189	char msg; / error message */\r
190	/* zlib inflate or deflate stream */\r
191	z_stream strm; /* stream structure in-place (not a pointer) */\r
192	} gz_state;\r
193	typedef gz_state FAR *gz_statep;\r
194	\r
195	/* shared functions */\r
196	void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *));\r
197	#if defined UNDER_CE\r
198	char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error));\r
199	#endif\r
200	\r
201	/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t\r
202	value -- needed when comparing unsigned to z_off64_t, which is signed\r
203	(possible z_off64_t types off_t, off64_t, and long are all signed) */\r
204	#ifdef INT_MAX\r
205	# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)\r
206	#else\r
207	unsigned ZLIB_INTERNAL gz_intmax OF((void));\r
208	# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())\r
209	#endif\r