ZIP format

[BackupUser]

Restored from previous forum. Originally posted by Denis.

Hi all,

I'd like to write an ASM lib (for PB) to pack/unpack files to Zip compression (i wonder if i'm able to do that ?).

Two questions :

1)What about the rights of this format ? Is it free or not ?

2)Where can i found all i need to write this lib (compression format) ?

Did anyBody here already do that ?

Thanks for your help

For french PB coders, if you know french sites about, please tell me.

Denis

[BackupUser]

Restored from previous forum. Originally posted by fred.

IHMO, better do it in C (with LCC) as the sources are available. It's called 'zlib', just search on the web.

Fred - AlphaSND

[BackupUser]

Restored from previous forum. Originally posted by El_Choni.

For the format, look at http://www.wotsit.org. Fred's right, but if you can do it in good optimized assembly (and you have time to do it), you'll make it faster. Good luck anyway.

El_Choni

[BackupUser]

Restored from previous forum. Originally posted by Denis.

Thanks Fred and El_Choni for infos.

Denis

[BackupUser]

Restored from previous forum. Originally posted by freak.

A Lib for Zip support would be really great!

I've tried to use the dll Version of 'zlib', for some time now, but
as the Manual is quite short, and I am no C guy, I failed, and now have
to call a CommandLine Version of a Zip Tool instead.

If you would do a Lib, I would be your first user

Timo

[BackupUser]

Restored from previous forum. Originally posted by CoderLaureate.

I've done some Zip File manipulation using Java. I haven't worked on a C++ project, in a couple years. Let me take a look at the ZLIB stuff, and see what I can come up with.

-Jim

---------------------------------------------
AMD Duron 950Mhz/Windows XP Pro
http://www.BlueFireStudios.com

[BackupUser]

Restored from previous forum. Originally posted by CoderLaureate.

Holy crap!

I'm looking at the documentation for the ZLIB compression library. Browsing through the source code. This uses a lot of terminology from the old Intel segmented memory 286 days.

It'll take some time to figure some of this stuff out, and I'm a little busy right now.

-Jim

---------------------------------------------
AMD Duron 950Mhz/Windows XP Pro
http://www.BlueFireStudios.com

[BackupUser]

Restored from previous forum. Originally posted by GPI.

Maybe this can help
http://w3.one.net/~kevinw/VB/d_DLL.htm

there is a dll, which is useable in VB, so PB should not have any problems.

PII 333, 256MB, Asus TNT2Ultra 32MB, AWE Gold 64 4MB

[BackupUser]

Restored from previous forum. Originally posted by Num3.

This is what i've been able to do so far in Zlib:

text$=InputRequester("Zlib Dll","Please type some text To compact","")

If OpenLibrary(0, "zlib.dll")

Dim outtext.b (Len(text$)+20)



size.l=Len(text$)+20
*sizepointer=@size.l
; *textinpointer = @textin()
*textinpointer = @text$
*outtextpointer = @outtext()
MessageRequester("ZLIB DLL", "Uncompressed Lenght:" + Str(size), 0)


If CallFunction(0, "compress", *outtextpointer,*sizepointer , *textinpointer, Len(text$))

MessageRequester("ZLIB DLL", "Compressed Lenght:" + Str(size), 0)

If AllocateMemory(0,size)
CopyMemory(*outtextpointer,UseMemory(0),size)
EndIf

If OpenFile(0, "c:\test.bulk")
WriteData(UseMemory(0), size)
CloseFile(0)
EndIf
EndIf

MessageRequester("ZLIB DLL", "Compressed Lenght:" + Str(size), 0)
MessageRequester("ZLIB DLL", "The text you typed was:" + PeekS(*outtextpointer), 0)

EndIf

Hi got the hole tecnical data on it.... Anyone want's it... Send me a mail...



--
Kind Regards
Rui Carvalho

Old programmers never die... They branch into a subroutine...