[delphizip] Re: Very slow to delete files from ZIP file
- From: Lewis <support@xxxxxxxxxxxx>
- To: delphizip@xxxxxxxxxxxxx
- Date: Wed, 17 Oct 2007 00:09:12 +0800
Thank you James, here are the detail information
1) The zip file is 247MB and it contains 277 files
2) Delete a single file takes about 20 seconds
3) It's on the local drive
Before delete the file I shutdown the antivirus software.
Do you mean ZIPMaster also need to copying required files to a new zip
file? If so, I believe that's why it's so slow to delete a file.
And, do you have any documents about why program can't simply delete a
file from a ZIP file like hard disk? I want to know more information
about it. Thanks!
Lewis Tian
James Turner wrote:
> You'll need to be more specific...
>
> 1) How big is the zip file and how many files does it contain?
> 2) How long does the operation take?
> 3) Is the zip file on a local hard disk or is it located on on a network
> drive or even a USB flash drive.
>
> Normally, deleting files within a zip archive is implemented by copying
> the required contents to a new zip file, deleting the old zip file and
> then moving or renaming the new zip file.
>
> It is conceivably possible that antivirus software might be causing a
> problem by repeatedly rescanning the same file.
>
> -- James Turner
>
>
>> I'm trying to delete some files/folders from a ZIP file and found the
>> ZIPMaster takes *very long* time to delete them.
>> I also tried to do similar things by WinRAR and it also takes a long
>> time. Is that normal? Is there any method to speed it up?
>>
>> I'm using version 179
>>
>> Thank you!
>>
>> Lewis Tian
>>
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