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Yes. That's a good find. Many thanks for your feedback.

Besides reporting this as a feature, is there any way to intercept this decompression method in PB?

It would be a good tip for the Purebasic doc to include the methods. Otherwise you spend hours why the "uncompressfile" command always brings ...

Yeah .. damned .. .... This was false in the Test. You right.
However it cant no uncompress. Other Zips worked fine but then exitsts Zips there cant uncompress. Can you Decompress the frfaq21b.zip with Purebasic. i use 5.73 LTS or PB 6.00 LTS?

I just working on a Archiv Converter Source (conv. to 7z) and I have a severals zip files from djgpp Repository that can't unpack with Uncompressfile and integrated ZIP support :shock:

But no Errors with 7z tool.

https://abload.de/img/bild_2023-02-23_024030fdin.png

Files are here: https ...

This works now good :)



- Extract to given target directory
- Extract All or
- Extract single files by Name or Position Number
- External Content List usable outside of pbUnLZX

v-0.6
Adding: Verify Archive UnLZX::Verify_Archive(*LzxMemory)
Resault are BAD Crc's Only

Extracting WHDload LZX ...

You know that you have

ForEach List()
...
Next

This is much easier than RestList() ... NextElement()


Yes, that's right. I didn't have that on my radar at all. I did the routine this morning before I went to bed. But it's not even final yet. :wink:


To extract this file:

https://files ...

There were 2 points which took hours to find out:

1. One endif was placed wrong.
This resulted in only decode the first turn.
Small files were Ok, large files were only decoded up to 15k.

2. The right conversion from

if(!shift--)
{
shift += 16;
control += *source++ << 24;
control += *source ...

Whoa.... how did you manage that so quickly?. I fall right off the chair. :D

I looked and searched for days. :shock:

Yes. The crc calc worked now. :D

PS:

Debug "UnLZX Purebasic Module v0.2 based on Amiga PowerPC Elf UnLZX 1.0 (22.2.98)"
Debug "Convertet by Infratec & Marty2PB"
Debug ...

LZX Pack archives are opened and read by code with no read error memory address or other memory error. However, this does not work properly because the files are written, something is not right yet.
Although the reading and the position and size to be read are correct, a few characters are missing ...

If ( count = (*p\temp - *p\source + 16384) )
Should be

count = (*p\temp - *p\source + 16384)
If count


The corrected crc_calc:

Procedure crc_calc(*Memory.CRC_Memory, *UnLZX.LZX_ARCHIVE, length.i, *FileCalc.ascii = #Null, Modus.i = 0)

Protected *mem.Ascii, temp.q, *crc_table.CRC ...

infratec wrote: Thu Feb 09, 2023 8:02 pm Hm ....

it works only if I use the x64 PB version.
With x86 I get CRC errors.

I will have a look.

Oh. That's strange. I haven't tested it with the PB x86 yet and i'm coding this in the 64-bit version.
Thank you for looking at this and for your time.

Can you provide a lzx file which works with your code?

Because I downloaded a few lzx files an I get CRC errors.

Example:
https://files.scene.org/view/demos/groups/abyss/ays-flve.lzx



do you mean CRCs bi Downloading or CRC from the PB Convertet Source
The Listings and CRC works but not ...

infratec wrote: Wed Feb 08, 2023 11:53 pm
.c in PB is unicode, which is more or less a word and not a byte

Ah, ok. I got confused with that.

Yes. You right. But the Signs are always shiftet. I somehow have a conversion error in there.


I upload the the Source to my Github Account. Too much Code.
https://github.com/MartyShepard/LHvSyst ... hiveLZX.pb

I'm well on my way :)

However, there are 2 functions with operands that I am unsure about converting to pb correctly.

First in the routine "Extract Normal" in C


do /* copy the overrun to the start of the buffer */
{
*destination++ = *temp++;
} while(--count);



i think in Purebasic


*p ...

Hello infratec
thanks for hint. Yes now ist works.

PS:
Thanks again for the help with the C64 disk and tape module.

Fred: Thank you