/* zutil.c -- target dependent utility functions for the compression library
- * Copyright (C) 1995-1998 Jean-loup Gailly.
+ * Copyright (C) 1995-2005 Jean-loup Gailly.
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#include "zutil.h"
+#ifndef NO_DUMMY_DECL
struct internal_state {int dummy;}; /* for buggy compilers */
-
-#ifndef STDC
-extern void exit OF((int));
#endif
-const char *z_errmsg[10] = {
+const char * const z_errmsg[10] = {
"need dictionary", /* Z_NEED_DICT 2 */
"stream end", /* Z_STREAM_END 1 */
"", /* Z_OK 0 */
return ZLIB_VERSION;
}
-#ifdef __WXDEBUG__
+uLong ZEXPORT zlibCompileFlags()
+{
+ uLong flags;
+
+ flags = 0;
+ switch (sizeof(uInt)) {
+ case 2: break;
+ case 4: flags += 1; break;
+ case 8: flags += 2; break;
+ default: flags += 3;
+ }
+ switch (sizeof(uLong)) {
+ case 2: break;
+ case 4: flags += 1 << 2; break;
+ case 8: flags += 2 << 2; break;
+ default: flags += 3 << 2;
+ }
+ switch (sizeof(voidpf)) {
+ case 2: break;
+ case 4: flags += 1 << 4; break;
+ case 8: flags += 2 << 4; break;
+ default: flags += 3 << 4;
+ }
+ switch (sizeof(z_off_t)) {
+ case 2: break;
+ case 4: flags += 1 << 6; break;
+ case 8: flags += 2 << 6; break;
+ default: flags += 3 << 6;
+ }
+#ifdef 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
+#ifdef STDC
+# 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 DEBUG
# ifndef verbose
# define verbose 0
# endif
int z_verbose = verbose;
-#if defined(__VISAGECPP__) /* Visualage can't handle this antiquated interface */
-void z_error (char* m)
-#else
void z_error (m)
char *m;
-#endif
{
fprintf(stderr, "%s\n", m);
exit(1);
/* exported to allow conversion of error code to string for compress() and
* uncompress()
*/
-#if defined(__VISAGECPP__) /* Visualage can't handle this antiquated interface */
-const char* ZEXPORT zError(int err)
-#else
const char * ZEXPORT zError(err)
int err;
-#endif
{
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
-#if defined(__VISAGECPP__) /* Visualage can't handle this antiquated interface */
-void zmemcpy(Bytef* dest, Bytef* source, Uint len)
-#else
void zmemcpy(dest, source, len)
Bytef* dest;
- Bytef* source;
+ const Bytef* source;
uInt len;
-#endif
{
if (len == 0) return;
do {
} while (--len != 0);
}
-#if defined(__VISAGECPP__) /* Visualage can't handle this antiquated interface */
-int zmemcmp(Bytef* s1, Bytef* s2, int len)
-#else
int zmemcmp(s1, s2, len)
- Bytef* s1;
- Bytef* s2;
+ const Bytef* s1;
+ const Bytef* s2;
uInt len;
-#endif
{
uInt j;
return 0;
}
-#if defined(__VISAGECPP__) /* Visualage can't handle this antiquated interface */
-void zmemzero(Bytef* dest, uInt len)
-#else
void zmemzero(dest, len)
Bytef* dest;
uInt len;
-#endif
{
if (len == 0) return;
do {
}
#endif
+
+#ifdef SYS16BIT
+
#ifdef __TURBOC__
-#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
- */
+/* Turbo C in 16-bit mode */
+
# define MY_ZCALLOC
/* Turbo C malloc() does not allow dynamic allocation of 64K bytes
ptr = opaque; /* just to make some compilers happy */
Assert(0, "zcfree: ptr not found");
}
-#endif
+
#endif /* __TURBOC__ */
-#if defined(M_I86) && !defined(__32BIT__)
+#ifdef M_I86
/* Microsoft C in 16-bit mode */
# define MY_ZCALLOC
-#if (!defined(_MSC_VER) || (_MSC_VER < 600))
+#if (!defined(_MSC_VER) || (_MSC_VER <= 600))
# define _halloc halloc
# define _hfree hfree
#endif
_hfree(ptr);
}
-#endif /* MSC */
+#endif /* M_I86 */
+
+#endif /* SYS16BIT */
#ifndef MY_ZCALLOC /* Any system without a special alloc function */
#ifndef STDC
+extern voidp malloc OF((uInt size));
extern voidp calloc OF((uInt items, uInt size));
extern void free OF((voidpf ptr));
#endif
-#if defined(__VISAGECPP__) /* Visualage can't handle this antiquated interface */
-voidpf zcalloc (voidpf opaque, unsigned items, unsigned size)
-#else
voidpf zcalloc (opaque, items, size)
voidpf opaque;
unsigned items;
unsigned size;
-#endif
{
if (opaque) items += size - size; /* make compiler happy */
- return (voidpf)calloc(items, size);
+ return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
+ (voidpf)calloc(items, size);
}
-#if defined(__VISAGECPP__) /* Visualage can't handle this antiquated interface */
-void zcfree(voidpf opaque, voidpf ptr)
-#else
void zcfree (opaque, ptr)
voidpf opaque;
voidpf ptr;
-#endif
{
free(ptr);
if (opaque) return; /* make compiler happy */
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