PureZIP library : ZIP / UNZIP files

Frontier · Post by **Frontier** » Tue Jan 08, 2008 3:09 pm

Thanks DoubleDutch, I haven't seen this

Micko · Post by **Micko** » Wed Jan 09, 2008 1:07 pm

hi gnozal !
pleaz take a look here
http://www.purebasic.fr/french/viewtopi ... 1&start=45

Sveinung · Post by **Sveinung** » Tue Jan 22, 2008 3:40 pm

@gnozal

Will your lib support the inflate() and deflate() commands (zLib 1.23) ?

regards
Sveinung

gnozal · Post by **gnozal** » Tue Jan 22, 2008 4:27 pm

Sveinung wrote:Will your lib support the inflate() and deflate() commands (zLib 1.23) ?

No, sorry.
I chose to only expose ready to use ZIP compatible functions.

But if you need 'raw' compression you could try PureZIP_PackMemory() / PureZIP_UnpackMemory() wich implement the ZLIB compress() and uncompress() functions. Or PB's JCALG1 compression routines. Or BriefLZ.

Here you will find some deflate / gz examples : http://www.purebasic.fr/german/viewtopic.php?t=10088
Or here (same code examples but with static library instead of userlibrary) : http://freenet-homepage.de/gnozal/PBLIB ... c_GZip.zip

Sveinung · Post by **Sveinung** » Tue Jan 22, 2008 11:57 pm

Will you lib support file sizes above 4 Gb?

Regards
Sveinung

gnozal · Post by **gnozal** » Wed Jan 23, 2008 8:49 am

Sveinung wrote:Will you lib support file sizes above 4 Gb?

No. It's a ZLIB limit. The library uses longs.
Anyway, for serious archiving, I would use something like 7ZIP or SQX.

Sveinung · Post by **Sveinung** » Wed Jan 23, 2008 10:43 am

Thank you and 7Zip it will be

Sveinung

DoubleDutch · Post by **DoubleDutch** » Sat May 10, 2008 6:04 am

On PB4.20b5 the V4.20 library get a polink error if this is included:

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Debug PureZIP_AddFiles(myzip$,"data\*.*",#PureZIP_StorePathAbsolute,#PureZIP_RecursiveZeroDirs)

It says the polink error is to do with PB_Delay?

graves · Post by **graves** » Sat May 10, 2008 10:26 am

Confirmed,

Up to 126 programs correctly compiled with 4.20b5.
But the only one using PureZip4.20 (v1.93) gives an error:

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Error: Linker
POLINK: error: Unresolved external symbol 'PB_Delay'.
POLINK: fatal error: 1 unresolved external(s).

I don't use the "Delay" OR "Debug" commands on my code.
I'm using

Code: Select all

PureZIP_AddFiles(zipfile$, abspath$\*.*, #PureZIP_StorePathRelative, #PureZIP_Recursive)

gnozal · Post by **gnozal** » Sun May 11, 2008 12:26 pm

When I have some time, I will update my libs for beta 5 (they will be updated for PB4.20 final, but I may not have the time to update for every new beta).

DoubleDutch · Post by **DoubleDutch** » Mon May 12, 2008 6:09 am

No problem.

graves · Post by **graves** » Mon May 12, 2008 9:11 am

We Will Wait.

gnozal · Post by **gnozal** » Thu May 22, 2008 1:14 pm

Update

(PB 4.2x version only)

Changes :
- recompiled with PB 4.20 beta 6

kinglestat · Post by **kinglestat** » Sun Jun 01, 2008 2:33 pm

is it normal that when I compress with PureZIP_PackMemory, and after unpack with PureZIP_UnpackMemory, the original uncompressed size is different?

gnozal · Post by **gnozal** » Mon Jun 02, 2008 12:35 pm

kinglestat wrote:is it normal that when I compress with PureZIP_PackMemory, and after unpack with PureZIP_UnpackMemory, the original uncompressed size is different?

Seems to be the same length here [tested with PB4.20] :

Code: Select all

PackTest.s = "0123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789"
SourceLength = Len(PackTest)
Debug SourceLength
*SourceMemoryID = AllocateMemory(SourceLength)
PokeS(*SourceMemoryID, PackTest, SourceLength)
DestinationLength = SourceLength + (SourceLength * 0.01) + 12
*DestinationMemoryID = AllocateMemory(DestinationLength)
Debug PureZIP_PackMemory(*SourceMemoryID, SourceLength, *DestinationMemoryID, @DestinationLength)
Debug DestinationLength
Debug PureZIP_UnpackMemory(*DestinationMemoryID, DestinationLength, *SourceMemoryID, @SourceLength)
Debug SourceLength
UnpackTest.s = Space(SourceLength)
UnpackTest = PeekS(*SourceMemoryID, @SourceLength)

Could you provide some code example ?