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Changes in 1.2.10 (2 Jan 2017) - Avoid warnings on snprintf() return value - Fix bug in deflate_stored() for zero-length input - Fix bug in gzwrite.c that produced corrupt gzip files - Remove files to be installed before copying them in Makefile.in - Add warnings when compiling with assembler code Changes in 1.2.9 (31 Dec 2016) - Fix contrib/minizip to permit unzipping with desktop API [Zouzou] - Improve contrib/blast to return unused bytes - Assure that gzoffset() is correct when appending - Improve compress() and uncompress() to support large lengths - Fix bug in test/example.c where error code not saved - Remedy Coverity warning [Randers-Pehrson] - Improve speed of gzprintf() in transparent mode - Fix inflateInit2() bug when windowBits is 16 or 32 - Change DEBUG macro to ZLIB_DEBUG - Avoid uninitialized access by gzclose_w() - Allow building zlib outside of the source directory - Fix bug that accepted invalid zlib header when windowBits is zero - Fix gzseek() problem on MinGW due to buggy _lseeki64 there - Loop on write() calls in gzwrite.c in case of non-blocking I/O - Add --warn (-w) option to ./configure for more compiler warnings - Reject a window size of 256 bytes if not using the zlib wrapper - Fix bug when level 0 used with Z_HUFFMAN or Z_RLE - Add --debug (-d) option to ./configure to define ZLIB_DEBUG - Fix bugs in creating a very large gzip header - Add uncompress2() function, which returns the input size used - Assure that deflateParams() will not switch functions mid-block - Dramatically speed up deflation for level 0 (storing) - Add gzfread(), duplicating the interface of fread() - Add gzfwrite(), duplicating the interface of fwrite() - Add deflateGetDictionary() function - Use snprintf() for later versions of Microsoft C - Fix *Init macros to use z_ prefix when requested - Replace as400 with os400 for OS/400 support [Monnerat] - Add crc32_z() and adler32_z() functions with size_t lengths - Update Visual Studio project files [AraHaan] |
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| .. | ||
| example.pas | ||
| readme.txt | ||
| zlibd32.mak | ||
| zlibpas.pas | ||
This directory contains a Pascal (Delphi, Kylix) interface to the
zlib data compression library.
Directory listing
=================
zlibd32.mak makefile for Borland C++
example.pas usage example of zlib
zlibpas.pas the Pascal interface to zlib
readme.txt this file
Compatibility notes
===================
- Although the name "zlib" would have been more normal for the
zlibpas unit, this name is already taken by Borland's ZLib unit.
This is somehow unfortunate, because that unit is not a genuine
interface to the full-fledged zlib functionality, but a suite of
class wrappers around zlib streams. Other essential features,
such as checksums, are missing.
It would have been more appropriate for that unit to have a name
like "ZStreams", or something similar.
- The C and zlib-supplied types int, uInt, long, uLong, etc. are
translated directly into Pascal types of similar sizes (Integer,
LongInt, etc.), to avoid namespace pollution. In particular,
there is no conversion of unsigned int into a Pascal unsigned
integer. The Word type is non-portable and has the same size
(16 bits) both in a 16-bit and in a 32-bit environment, unlike
Integer. Even if there is a 32-bit Cardinal type, there is no
real need for unsigned int in zlib under a 32-bit environment.
- Except for the callbacks, the zlib function interfaces are
assuming the calling convention normally used in Pascal
(__pascal for DOS and Windows16, __fastcall for Windows32).
Since the cdecl keyword is used, the old Turbo Pascal does
not work with this interface.
- The gz* function interfaces are not translated, to avoid
interfacing problems with the C runtime library. Besides,
gzprintf(gzFile file, const char *format, ...)
cannot be translated into Pascal.
Legal issues
============
The zlibpas interface is:
Copyright (C) 1995-2003 Jean-loup Gailly and Mark Adler.
Copyright (C) 1998 by Bob Dellaca.
Copyright (C) 2003 by Cosmin Truta.
The example program is:
Copyright (C) 1995-2003 by Jean-loup Gailly.
Copyright (C) 1998,1999,2000 by Jacques Nomssi Nzali.
Copyright (C) 2003 by Cosmin Truta.
This software is provided 'as-is', without any express or implied
warranty. In no event will the author be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.