1 files changed, 142 insertions, 0 deletions
diff --git a/neozip/zutil.h b/neozip/zutil.h
new file mode 100644
index 0000000000..9017c687f1
--- /dev/null
+++ b/neozip/zutil.h
@@ -0,0 +1,142 @@
+#ifndef ZUTIL_H_
+#define ZUTIL_H_
+/* zutil.h -- internal interface and configuration of the compression library
+ * Copyright (C) 1995-2024 Jean-loup Gailly, Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+#include "zbuild.h"
+#ifdef ZLIB_COMPAT
+#  include "zlib.h"
+#else
+#  include "zlib-ng.h"
+#endif
+
+typedef unsigned char uch; /* Included for compatibility with external code only */
+typedef uint16_t ush;      /* Included for compatibility with external code only */
+typedef unsigned long ulg;
+
+extern z_const char * const PREFIX(z_errmsg)[10]; /* indexed by 2-zlib_error */
+/* (size given to avoid silly warnings with Visual C++) */
+
+#define ERR_MSG(err) PREFIX(z_errmsg)[(err) < -6 || (err) > 2 ? 9 : 2 - (err)]
+
+#define ERR_RETURN(strm, err) return (strm->msg = ERR_MSG(err), (err))
+/* To be used only when the state is known to be valid */
+
+        /* common constants */
+
+#ifndef DEF_WBITS
+#  define DEF_WBITS MAX_WBITS
+#endif
+/* default windowBits for decompression. MAX_WBITS is for compression only */
+
+#define MAX_BITS 15
+/* all codes must not exceed MAX_BITS bits */
+#define MAX_DIST_EXTRA_BITS 13
+/* maximum number of extra distance bits */
+
+#if MAX_MEM_LEVEL >= 8
+#  define DEF_MEM_LEVEL 8
+#else
+#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
+#endif
+/* default memLevel */
+
+#define STORED_BLOCK 0
+#define STATIC_TREES 1
+#define DYN_TREES    2
+/* The three kinds of block type */
+
+#define STD_MIN_MATCH  3
+#define STD_MAX_MATCH  258
+/* The minimum and maximum match lengths mandated by the deflate standard */
+
+#define WANT_MIN_MATCH  4
+/* The minimum wanted match length, affects deflate_quick, deflate_fast, deflate_medium and deflate_slow  */
+
+#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
+
+#define ADLER32_INITIAL_VALUE 1 /* initial adler-32 hash value */
+#define CRC32_INITIAL_VALUE   0 /* initial crc-32 hash value */
+
+#define ZLIB_WRAPLEN 6      /* zlib format overhead */
+#define GZIP_WRAPLEN 18     /* gzip format overhead */
+
+#define DEFLATE_HEADER_BITS 3
+#define DEFLATE_EOBS_BITS   15
+#define DEFLATE_PAD_BITS    6
+#define DEFLATE_BLOCK_OVERHEAD ((DEFLATE_HEADER_BITS + DEFLATE_EOBS_BITS + DEFLATE_PAD_BITS) >> 3)
+/* deflate block overhead: 3 bits for block start + 15 bits for block end + padding to nearest byte */
+
+#define DEFLATE_QUICK_LIT_MAX_BITS 9
+#define DEFLATE_QUICK_OVERHEAD(x) ((x * (DEFLATE_QUICK_LIT_MAX_BITS - 8) + 7) >> 3)
+/* deflate_quick worst-case overhead: 9 bits per literal, round up to next byte (+7) */
+
+
+        /* target dependencies */
+
+#ifdef AMIGA
+#  define OS_CODE  1
+#endif
+
+#ifdef __370__
+#  if __TARGET_LIB__ < 0x20000000
+#    define OS_CODE 4
+#  elif __TARGET_LIB__ < 0x40000000
+#    define OS_CODE 11
+#  else
+#    define OS_CODE 8
+#  endif
+#endif
+
+#if defined(ATARI) || defined(atarist)
+#  define OS_CODE  5
+#endif
+
+#ifdef OS2
+#  define OS_CODE  6
+#endif
+
+#if defined(MACOS)
+#  define OS_CODE  7
+#endif
+
+#ifdef __acorn
+#  define OS_CODE 13
+#endif
+
+#if defined(_WIN32) && !defined(__CYGWIN__)
+#  define OS_CODE  10
+#endif
+
+#ifdef __APPLE__
+#  define OS_CODE 19
+#endif
+
+        /* common defaults */
+
+#ifndef OS_CODE
+#  define OS_CODE  3  /* assume Unix */
+#endif
+
+         /* macros */
+
+#define CHECK_VER_STSIZE(_ver,_stsize) ((_ver) == NULL || (_ver)[0] != PREFIX2(VERSION)[0] || (_stsize) != (int32_t)sizeof(PREFIX3(stream)))
+
+         /* memory allocation functions */
+
+void Z_INTERNAL *PREFIX(zcalloc)(void *opaque, unsigned items, unsigned size);
+void Z_INTERNAL  PREFIX(zcfree)(void *opaque, void *ptr);
+void Z_INTERNAL *zng_alloc_aligned(unsigned size, unsigned align);
+void Z_INTERNAL zng_free_aligned(void *ptr);
+
+typedef void *zng_calloc_func(void *opaque, unsigned items, unsigned size);
+typedef void  zng_cfree_func(void *opaque, void *ptr);
+
+#endif /* ZUTIL_H_ */