-- notes -----------------------------------------------------------------------------------------

the units included in this archive should work with delphi 5 through delphi xe3 for win32 and win64.

please contact me if you find any errors, make any changes, add new functionality, or have any general suggestions so that i may incorporate them into my version. i can be reached via my website at

http://www.base2ti.com

thanks.

brent sherwood

-- disclaimer ------------------------------------------------------------------------------------

this software is provided "as-is", without any express or implied warranty. in no event will the authors 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. please do not misrepresent the origin of this software. if you use this software in a product, an acknowledgment in the product documentation (readme, about box, help file, etc.) would be appreciated but is not required.

-- installation ----------------------------------------------------------------------------------

first, copy all of the files into a folder (for example, c:\delphi\zlib). next, include the folder in the library path in the environment options. finally, "use" the zlibex and zlibexgz units as needed.

-- contents --------------------------------------------------------------------------------------

delphi files

zlibex.inc
zlibex.pas
zlibexapi.pas
zlibexgz.pas

objects files used by zlibex.pas

win32\adler32.obj
win32\compress.obj
win32\crc32.obj
win32\deflate.obj
win32\infback.obj
win32\inffast.obj
win32\inflate.obj
win32\inftrees.obj
win32\trees.obj

win64\adler32.obj
win64\compress.obj
win64\crc32.obj
win64\deflate.obj
win64\infback.obj
win64\inffast.obj
win64\inflate.obj
win64\inftrees.obj
win64\trees.obj

zlib 1.2.8 source files (http://www.zlib.net)

zlib\adler32.c
zlib\compress.c
zlib\crc32.c
zlib\deflate.c
zlib\infback.c
zlib\inffast.c
zlib\inflate.c
zlib\inftrees.c
zlib\trees.c
zlib\zutil.c
zlib\crc32.h
zlib\deflate.h
zlib\inffast.h
zlib\inffixed.h
zlib\inflate.h
zlib\inftrees.h
zlib\trees.h
zlib\zconf.h
zlib\zlib.h
zlib\zutil.h

-- history ---------------------------------------------------------------------------------------

2013.05.23 zlibexapi.pas updated to zlib version 1.2.8

          zlibex.inc
            updated for delphi xe3 (2013)

2012.05.23 zlibexgz.pas updated for delphi xe2 added overloaded GZCompressFile

2012.05.21 zlibex.pas updated for win64 (delphi xe2) added NativeInt type for delphi 2007- added NativeUInt type for delphi 2007-

          zlibexapi.pas
            updated for win64 (delphi xe2)
            moved win32 obj files to win32 subfolder
            changed win32 obj options to exclude the underscore

2012.05.07 zlibexapi.pas updated to zlib version 1.2.7

2012.05.01 zlibex.inc updated for delphi xe2 (2012)

2012.03.05 zliexapi.pas udpated to zlib version 1.2.6

2011.07.21 zlibex.pas fixed routines to validate size before calling Move

          zlibexgz.pas
            fixed routines to validate size before calling Move

2010.07.01 zlibex.pas hide overloaded ZString routines for delphi 5

2010.05.02 zlibex.pas added ZDeflateEx and ZInflateEx

2010.04.20 zlibex.pas added TZ*Buffer classes

          zlibexapi.pas
            updated to zlib version 1.2.5

2010.04.15 zlibex.pas moved core zlib routines to separate unit (ZLibExApi.pas)

          zlibexapi.pas
            updated to zlib version 1.2.4

2010.01.27 zlibex.pas updated for delphi 2010

          zlibexgz.pas
            updated for delphi 2010

          zlibex.inc
            updated for delphi 2010

2009.04.14 zlibex.pas added overloaded string routines for AnsiString and UnicodeString

          zlibexgz.pas
            added overloaded string routines for AnsiString and
              UnicodeString
            removed deprecated Z*G routines

2009.04.11 zlibex.inc updated to use CONDITIONALEXPRESSIONS and CompilerVersion

2009.01.28 zlibex.pas updated for delphi 2009 String (UnicodeString)

          zlibexgz.pas
            updated for delphi 2009 String (UnicodeString)

          zlibex.inc
            updated for delphi 2009

2008.05.15 zlibex.pas added TStreamPos type Stream.Position variants added TCustomZStream.Stream* methods

          zlibexgz.pas
            added TGZCompressionStream and TGZDecompressionStream

2007.11.06 zlibexgz.pas changed TGZTrailer.Crc from Cardinal to Longint

2007.10.01 zlibexgz.pas added GZDecompressStreamSize fixed GZDecompressStream position handling

          zlibex.inc
            updated for delphi 2007

2007.08.17 zlibex.pas modified TZCompressionStream.Write to use Write instead of WriteBuffer

2007.07.18 zlibexgz.pas fixed GZCompressStr filename and comment processing

2007.03.18 zlibexgz.pas modified naming convention for gzip routines GZ* deprecated previous gzip routines Z*G

2007.03.15 zlibex.pas moved gzip routines to separate unit - zlibexgz.pas

          zlibexgz.pas
            added ZDecompressStreamG
            added overloaded ZCompressStrG
            added overloaded ZCompressStreamG

2007.02.24 zlibex.pas added PWord declaration for delphi 5-

2006.10.07 zlibex.pas fixed EZLibError constructor for c++ builder compatibility

2006.08.10 zlibex.pas added ZDecompressStrG (simple gzip format)

2006.06.02 zlibex.pas added DateTimeToUnix for delphi 5-

2006.03.28 zlibex.pas moved Z_DEFLATED to interface section added custom compression levels zcLevel1 thru zcLevel9

2006.03.27 zlibex.pas added ZCompressStreamWeb added ZCompressStreamG (simple gzip format)

2006.03.24 zlibex.pas added ZCompressStrG (simple gzip format) added ZAdler32 and ZCrc32

2005.11.29 zlibex.pas changed FStreamPos to Int64 for delphi 6+

2005.07.25 zlibex.pas updated to zlib version 1.2.3

2005.03.04 zlibex.pas modified ZInternalCompressStream loops modified ZInternalDecompressStream loops

2005.02.07 zlibex.pas fixed ZInternalCompressStream loop conditions fixed ZInternalDecompressStream loop conditions

2005.01.11 zlibex.pas updated to zlib version 1.2.2 added ZCompressStrWeb

2004.01.06 zlibex.pas updated to zlib version 1.2.1

2003.04.14 zlibex.pas added ZCompress2 and ZDecompress2 added ZCompressStr2 and ZDecompressStr2 added ZCompressStream2 and ZDecompressStream2 added overloaded T*Stream constructors to support InflateInit2 and DeflateInit2 fixed ZDecompressStream to use ZDecompressCheck instead of ZCompressCheck

2002.03.15 zlibex.pas updated to zlib version 1.1.4

2001.11.27 zlibex.pas enhanced TZDecompressionStream.Read to adjust source stream position upon end of compression data fixed endless loop in TZDecompressionStream.Read when destination count was greater than uncompressed data

2001.10.26 zlibex.pas renamed unit to integrate "nicely" with delphi 6

2000.11.24 zlib.pas added soFromEnd condition to TZDecompressionStream.Seek added ZCompressStream and ZDecompressStream

2000.06.13 zlib.pas optimized, fixed, rewrote, and enhanced the zlib.pas unit included on the delphi cd (zlib version 1.1.3)

-- acknowledgments -------------------------------------------------------------------------------

erik turner - thanks for the enhancements and recommendations. specifically, the ZCompressionStream and ZDecompressionStream routines. my apologies for the delay in getting these in here.

david bennion - thanks for finding that nasty little endless loop quirk with the TZDecompressionStream.Read method.

burak kalayci - thanks for emailing to inform me about the zlib 1.1.4 update; and again for emailing about 1.2.1.

vicente sánchez-alarcos - thanks for emailing to inform me about the zlib 1.2.2 update.

luigi sandon - thanks for pointing out the missing loop condition (Z_STREAM_END) in ZInternalCompressStream and ZInternalDecompressStream.

ferry van genderen - thanks for assisting me fine tune and beta test the ZInternalCompressStream and ZInternalDecompressStream routines.

mathijs van veluw - thanks for emailing to inform me about the zlib 1.2.3 update.

j. rathlev - thanks for pointing out the FStreamPos and TStream.Position type inconsistency.

ralf wenske - thanks for prototyping and assisting with ZCompressStrG and ZCompressStreamG.

roman krupicka - thanks for pointing out the DateUtils unit and the DateTimeToUnix function wasn't available prior to delphi 6.

anders johansen - thanks for pointing out the ELibError constructor incompatibility with c++ builder.

marcin treffler - thanks for pointing out the missing PWord declaration for delphi 5.

jean-jacques esquirol - thanks for pointing out the "result" address issue when processing filename and comment flags/content in GZCompressStr; and for pointing out the type differences with TGZTrailer.Crc (Cardinal) and ZCrc32 (Longint).

graham wideman - thanks for beta testing GZDecompressStreamSize and pointing out the position handling issue in GZDecompressStream.

marcin szafrański - thanks for beta testing the delphi 2009 changes.

iztok kacin - thanks for the CONDITIONALEXPRESSIONS, CompilerVersion changes, and assisting me design and further improve support for delphi 2009.

oleg matrozov - thanks for pointing out the missing loop condition (avail_in > 0) in ZInternalCompress and ZInternalDecompress; and for prototyping and assisting with the TZ*Buffer classes.

edward koo - thanks for pointing out the delphi 5 incompatibility with the overloaded ZString routines.

farshad mohajeri - thanks for the paypal donation.

egron elbra - thanks for pointing out the range exception when moving empty strings.

tommi prami - thanks for emailing to inform me about the zlib 1.2.6 udpate.

marian pascalau - thanks for providing the win64 obj files and your win64 modifications.

marat safin - thanks for the paypal donation.

moacir schmidt - thanks for the paypal donation.

roman ganz - thanks for the paypal donation and informing me about the zlib 1.2.8 update.