PureZIP library : ZIP / UNZIP files

gnozal · **Posted:** Mon Dec 21, 2009 1:27 pm

zxtunes.com wrote:

gnozal tell PureZip supports unpacking zip (RAW) archive without heading from memory
(1 file without zip a heading format)?

No, this is not supported.

KIKI · **Posted:** Tue Feb 02, 2010 11:49 am

With PB 4.41

Quote:

I don't arrive to store the relative path

ex:
C:\toto is the main directory
repfic = c:\toto\titi
PureZIP_AddFiles(MyZIP, repfic+"\banque.db", #PureZIP_StorePathRelative, #PureZIP_Recursive)

Quote:

if i use

PureZIP_AddFiles(MyZIP, repfic+"\banque.db", #PureZIP_StorePathRelative, #PureZIP_RecursiveZeroDirs)
It's impossible to read archive after

gnozal · **Posted:** Tue Feb 02, 2010 1:23 pm

2KiKI : I am getting the expected results here ...

Code:

repfic.s = "C:\toto\titi"
MyZIP.s = "C:\TEST1.ZIP"
Debug PureZIP_AddFiles(MyZIP, repfic+"\banque.db", #PureZIP_StorePathRelative, #PureZIP_Recursive)

Debug : 1
Resulting archive C:\TEST1.ZIP : valid [tested with TotalCMD, 7-ZIP and WinRAR]
Archive listing : c:\TEST1.ZIP\banque.db

Code:

repfic.s = "C:\toto\titi"
MyZIP.s = "C:\TEST2.ZIP"
Debug PureZIP_AddFiles(MyZIP, repfic+"\banque.db", #PureZIP_StorePathRelative, #PureZIP_RecursiveZeroDirs)

Debug : 1
Resulting archive C:\TEST2.ZIP : valid [tested with TotalCMD, 7-ZIP and WinRAR]
Archive listing : c:\TEST2.ZIP\banque.db

Your base directory is "C:\toto\titi", so if you choose #PureZIP_StorePathRelative, the paths are stored relative to it, i.e. no path stored for 'banque.db' (it's in the base directory).

Try this :

Code:

repfic.s = "C:\toto"
Debug PureZIP_AddFiles(MyZIP, repfic+"\*.db", #PureZIP_StorePathRelative, #PureZIP_Recursive)

NB : if you want more control, you may use the PureZIP_Archive_*() functions.

kurzer · **Posted:** Tue Feb 09, 2010 3:09 pm

Hello Gnozal,

what does a Result of -666 means for function PureZIP_Archive_Compress() ?
(sorry no example code this time)

Kind Regards, Kurzer

gnozal · **Posted:** Tue Feb 09, 2010 3:21 pm

kurzer wrote:

what does a Result of -666 means for function PureZIP_Archive_Compress() ?
(sorry no example code this time)

-666 is #PureZIP_CallbackStop.

Quote:

PureZIP_SetCompressionCallback(*ProcedureAddress)

The callback is called in realtime during compression or decompression.

Procedure MyCallback(FileName.s, Progression.f, UserParam.l)
   ; FileName : current processed file (if applicable)
   ; Progression : progression percentage)
   ProcedureReturn #False
   ; ProcedureReturn #True to stop the compression
EndProcedure

Returned value [only for PureZIP_Archive_Compress() and PureZIP_Archive_Extract()]
  #FALSE : compression / extraction continues
  #TRUE : compression / extraction stops !
    PureZIP_Archive_Compress() and PureZIP_Archive_Extract() returns #PureZIP_CallbackStop error

kurzer · **Posted:** Tue Feb 09, 2010 4:01 pm

Uhh damn, thank you for this hint! :shock:

IdeasVacuum · **Posted:** Wed Feb 17, 2010 8:16 pm

Hi Gnozal

PB 4.40 x86 WinXP SP3

Can you spare some time to help me?

Using three simple Pure_Zip functions I create an archive with just one file inside (that is all I need):

PureZIP_Archive_Create(sMyZipFilePathFull, #APPEND_STATUS_CREATE)
PureZIP_AddFile(sMyZipFilePathFull, sMyFilePathFull, #PureZIP_StorePathAbsolute)
PureZIP_Archive_Close()

A zip file is created (archived file size is correct, 1,219,434 bytes) and I can open it with WinZip, WinRar etc but I cannot extract the file.

WinZip reports:

Extracting file: C:\Temp\Leg2-Small.zip
Extracting to "C:\Temp\"
Use Path: yes Overlay Files: no
Error in file #1: bad Zip file offset (Error local header signature not found): disk #1 offset: 0

WinRar:

! C:\Temp\Leg2-Small.zip: The archive is corrupt

PureZIP_ExtractFiles(sMyZipFilePathFull, "*.*", "C:\Temp", #TRUE) does not work either.

This is the same with or without storing the file path, thread safe mode or not. What am I doing wrong?

gnozal · **Posted:** Thu Feb 18, 2010 9:48 am

IdeasVacuum wrote:

Using three simple Pure_Zip functions I create an archive with just one file inside (that is all I need):
PureZIP_Archive_Create(sMyZipFilePathFull, #APPEND_STATUS_CREATE)
PureZIP_AddFile(sMyZipFilePathFull, sMyFilePathFull, #PureZIP_StorePathAbsolute)
PureZIP_Archive_Close()
A zip file is created (archived file size is correct, 1,219,434 bytes) and I can open it with WinZip, WinRar etc but I cannot extract the file.

You can't mix PureZIP_Archive_*() functions with 'standalone' functions like PureZIP_AddFile().
If you use PureZIP_Archive_Create(), you have to use PureZIP_Archive_Compress().

IdeasVacuum · **Posted:** Thu Feb 18, 2010 5:49 pm

Owch! So obvious with hindsight! Sorry to waste your time. It's a magnificent library, thank you.

gnozal · **Posted:** Fri Feb 19, 2010 9:52 am

IdeasVacuum wrote:

Owch! So obvious with hindsight!

I have updated the help file :wink:

DoubleDutch · **Posted:** Fri Apr 02, 2010 11:44 am

On PureBasic v4.50b2 there is a strange error:

Code:

filename$=myFileinfo\FileName

Gives error: Can't write numerical value into a string variable.

But if I the structure as:

Code:

Structure PureZIP_FileInfo2
  Version.l         ; version made by
  VersionNeeded.l      ; version needed to extract
  flag.l         ; general purpose bit flag [if bit 0 is set the file is encrypted]
  CompressionMethod.l   ; compression method [0 - 10]
  dosDate.l         ; last mod file date in Dos format [do not use !]
  Crc32.l         ; crc-32
  CompressedSize.l      ; compressed size
  unCompressedSize.l   ; uncompressed size
  SizeFilename.l      ; filename length
  SizeFileExtra.l      ; extra field length
  SizeFileComment.l      ; file comment length
  DiskNumStart.l      ; disk number start
  internal_fa.l      ; internal file attributes
  external_fa.l      ; external file attributes (packed file attributes)
  tmu_date.tm_date      ; file date (see tm_date structure) [use this to get filedate!]
  FileName.s      ; filename
EndStructure

myFileinfo.PureZIP_FileInfo2

It works.

jamba · **Posted:** Tue Apr 06, 2010 10:41 pm

I've noticed the same thing as Double Dutch with 4.5b2. uninstall/reinstall of the userlib does not fix. somehow the structure definition is truncated.

(I made a post in the userlib thread, which turned out to be the wrong place!)

gnozal · **Posted:** Wed Apr 07, 2010 12:38 pm

DoubleDutch wrote:

On PureBasic v4.50b2 there is a strange error:

Code:

filename$=myFileinfo\FileName

Gives error: Can't write numerical value into a string variable.[/code]

I can't download PB4.50 right now, but iirc the structure is defined in PureZIP.res, so I suspect the new PB version doesn't read old residents correctly anymore ?
I will probably have to recompile the resident(s).

dmxpowa · **Joined:** Thu Jul 16, 2009 1:02 pm **Posts:** 2

id liek to ask for a file delete function, cuz if i do "AddFile" and the zip contains that file it just places it near the old item, produces 2 files with same name in the archive.

gnozal · **Posted:** Thu Apr 22, 2010 2:24 pm

dmxpowa wrote:

id liek to ask for a file delete function, cuz if i do "AddFile" and the zip contains that file it just places it near the old item, produces 2 files with same name in the archive.

ZLIB does not provide any function to delete a file in an archive.
So this will not happen any time soon.

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