diff options
Diffstat (limited to 'src/gzip/zutil.c')
-rw-r--r-- | src/gzip/zutil.c | 206 |
1 files changed, 175 insertions, 31 deletions
diff --git a/src/gzip/zutil.c b/src/gzip/zutil.c index 7ad0c1f81..a76c6b0c7 100644 --- a/src/gzip/zutil.c +++ b/src/gzip/zutil.c @@ -1,20 +1,152 @@ /* zutil.c -- target dependent utility functions for the compression library - * Copyright (C) 1995-2002 Jean-loup Gailly. + * Copyright (C) 1995-2017 Jean-loup Gailly * For conditions of distribution and use, see copyright notice in zlib.h */ /* @(#) $Id$ */ #include "zutil.h" +#ifndef Z_SOLO +# include "gzguts.h" +#endif -#ifndef STDC -extern void exit OF((int)); +z_const char * const z_errmsg[10] = { + (z_const char *)"need dictionary", /* Z_NEED_DICT 2 */ + (z_const char *)"stream end", /* Z_STREAM_END 1 */ + (z_const char *)"", /* Z_OK 0 */ + (z_const char *)"file error", /* Z_ERRNO (-1) */ + (z_const char *)"stream error", /* Z_STREAM_ERROR (-2) */ + (z_const char *)"data error", /* Z_DATA_ERROR (-3) */ + (z_const char *)"insufficient memory", /* Z_MEM_ERROR (-4) */ + (z_const char *)"buffer error", /* Z_BUF_ERROR (-5) */ + (z_const char *)"incompatible version",/* Z_VERSION_ERROR (-6) */ + (z_const char *)"" +}; + + +const char * ZEXPORT zlibVersion() +{ + return ZLIB_VERSION; +} + +uLong ZEXPORT zlibCompileFlags() +{ + uLong flags; + + flags = 0; + switch ((int)(sizeof(uInt))) { + case 2: break; + case 4: flags += 1; break; + case 8: flags += 2; break; + default: flags += 3; + } + switch ((int)(sizeof(uLong))) { + case 2: break; + case 4: flags += 1 << 2; break; + case 8: flags += 2 << 2; break; + default: flags += 3 << 2; + } + switch ((int)(sizeof(voidpf))) { + case 2: break; + case 4: flags += 1 << 4; break; + case 8: flags += 2 << 4; break; + default: flags += 3 << 4; + } + switch ((int)(sizeof(z_off_t))) { + case 2: break; + case 4: flags += 1 << 6; break; + case 8: flags += 2 << 6; break; + default: flags += 3 << 6; + } +#ifdef ZLIB_DEBUG + flags += 1 << 8; +#endif +#if defined(ASMV) || defined(ASMINF) + flags += 1 << 9; +#endif +#ifdef ZLIB_WINAPI + flags += 1 << 10; +#endif +#ifdef BUILDFIXED + flags += 1 << 12; +#endif +#ifdef DYNAMIC_CRC_TABLE + flags += 1 << 13; +#endif +#ifdef NO_GZCOMPRESS + flags += 1L << 16; +#endif +#ifdef NO_GZIP + flags += 1L << 17; +#endif +#ifdef PKZIP_BUG_WORKAROUND + flags += 1L << 20; +#endif +#ifdef FASTEST + flags += 1L << 21; +#endif +#if defined(STDC) || defined(Z_HAVE_STDARG_H) +# ifdef NO_vsnprintf + flags += 1L << 25; +# ifdef HAS_vsprintf_void + flags += 1L << 26; +# endif +# else +# ifdef HAS_vsnprintf_void + flags += 1L << 26; +# endif +# endif +#else + flags += 1L << 24; +# ifdef NO_snprintf + flags += 1L << 25; +# ifdef HAS_sprintf_void + flags += 1L << 26; +# endif +# else +# ifdef HAS_snprintf_void + flags += 1L << 26; +# endif +# endif +#endif + return flags; +} + +#ifdef ZLIB_DEBUG +#include <stdlib.h> +# ifndef verbose +# define verbose 0 +# endif +int ZLIB_INTERNAL z_verbose = verbose; + +void ZLIB_INTERNAL z_error (m) + char *m; +{ + fprintf(stderr, "%s\n", m); + exit(1); +} #endif +/* exported to allow conversion of error code to string for compress() and + * uncompress() + */ +const char * ZEXPORT zError(err) + int err; +{ + return ERR_MSG(err); +} + +#if defined(_WIN32_WCE) + /* The Microsoft C Run-Time Library for Windows CE doesn't have + * errno. We define it as a global variable to simplify porting. + * Its value is always 0 and should not be used. + */ + int errno = 0; +#endif #ifndef HAVE_MEMCPY -void zmemcpy(dest, source, len) +void ZLIB_INTERNAL zmemcpy(dest, source, len) Bytef* dest; const Bytef* source; uInt len; @@ -25,7 +157,7 @@ void zmemcpy(dest, source, len) } while (--len != 0); } -int zmemcmp(s1, s2, len) +int ZLIB_INTERNAL zmemcmp(s1, s2, len) const Bytef* s1; const Bytef* s2; uInt len; @@ -38,7 +170,7 @@ int zmemcmp(s1, s2, len) return 0; } -void zmemzero(dest, len) +void ZLIB_INTERNAL zmemzero(dest, len) Bytef* dest; uInt len; { @@ -49,11 +181,13 @@ void zmemzero(dest, len) } #endif -#if defined( MSDOS ) && defined( __TURBOC__ ) && !defined( MY_ZCALLOC ) -#if (defined( __BORLANDC__) || !defined(SMALL_MEDIUM)) && !defined(__32BIT__) -/* Small and medium model in Turbo C are for now limited to near allocation - * with reduced MAX_WBITS and MAX_MEM_LEVEL - */ +#ifndef Z_SOLO + +#ifdef SYS16BIT + +#ifdef __TURBOC__ +/* Turbo C in 16-bit mode */ + # define MY_ZCALLOC /* Turbo C malloc() does not allow dynamic allocation of 64K bytes @@ -80,11 +214,13 @@ local ptr_table table[MAX_PTR]; * a protected system like OS/2. Use Microsoft C instead. */ -voidpf zcalloc (voidpf opaque, unsigned items, unsigned size) +voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size) { - voidpf buf = opaque; /* just to make some compilers happy */ + voidpf buf; ulg bsize = (ulg)items*size; + (void)opaque; + /* If we allocate less than 65520 bytes, we assume that farmalloc * will return a usable pointer which doesn't have to be normalized. */ @@ -104,9 +240,12 @@ voidpf zcalloc (voidpf opaque, unsigned items, unsigned size) return buf; } -void zcfree (voidpf opaque, voidpf ptr) +void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr) { int n; + + (void)opaque; + if (*(ush*)&ptr != 0) { /* object < 64K */ farfree(ptr); return; @@ -122,14 +261,13 @@ void zcfree (voidpf opaque, voidpf ptr) next_ptr--; return; } - ptr = opaque; /* just to make some compilers happy */ Assert(0, "zcfree: ptr not found"); } -#endif -#endif /* MSDOS && __TURBOC__ */ + +#endif /* __TURBOC__ */ -#if defined(M_I86) && !defined(__32BIT__) && !defined( MY_ZCALLOC ) +#ifdef M_I86 /* Microsoft C in 16-bit mode */ # define MY_ZCALLOC @@ -139,43 +277,49 @@ void zcfree (voidpf opaque, voidpf ptr) # define _hfree hfree #endif -voidpf zcalloc (voidpf opaque, unsigned items, unsigned size) +voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, uInt items, uInt size) { - if (opaque) opaque = 0; /* to make compiler happy */ + (void)opaque; return _halloc((long)items, size); } -void zcfree (voidpf opaque, voidpf ptr) +void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr) { - if (opaque) opaque = 0; /* to make compiler happy */ + (void)opaque; _hfree(ptr); } -#endif /* MSC */ +#endif /* M_I86 */ + +#endif /* SYS16BIT */ #ifndef MY_ZCALLOC /* Any system without a special alloc function */ #ifndef STDC -extern voidp ft_scalloc OF((uInt items, uInt size)); -extern void ft_sfree OF((voidpf ptr)); +extern voidp malloc OF((uInt size)); +extern voidp calloc OF((uInt items, uInt size)); +extern void free OF((voidpf ptr)); #endif -voidpf zcalloc (opaque, items, size) +voidpf ZLIB_INTERNAL zcalloc (opaque, items, size) voidpf opaque; unsigned items; unsigned size; { - if (opaque) items += size - size; /* make compiler happy */ - return (voidpf)ft_scalloc(items, size); + (void)opaque; + return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) : + (voidpf)calloc(items, size); } -void zcfree (opaque, ptr) +void ZLIB_INTERNAL zcfree (opaque, ptr) voidpf opaque; voidpf ptr; { - ft_sfree(ptr); - if (opaque) return; /* make compiler happy */ + (void)opaque; + free(ptr); } #endif /* MY_ZCALLOC */ + +#endif /* !Z_SOLO */ |