[delphizip] Re: First Post: How to clear and reuse a TZipMaster object?
- From: "R.Peters" <russellpeters@xxxxxxxxxxx>
- To: delphizip@xxxxxxxxxxxxx
- Date: Tue, 21 Mar 2006 06:54:05 +1100
Nathan Probst wrote:
> Cool. That's working fine now...(after I got rid of a leftover
> Zip.Freethat was hiding from me!)
> Any other tips on eeking out the maximum performance, valuing speed over
> compression?
>
> On 3/20/06, R.Peters <russellpeters@xxxxxxxxxxx> wrote:
>
>> Nathan Probst wrote:
>>
>>> Great! Is there any difference if I'm using AddStreamToFile, as in:
>>> Zip.ZipFileName := FileName;
>>> Zip.ZipStream.LoadFromStream(MemStream);
>>> ErrCode := Zip.AddStreamToFile('disk.dat', DateTimeToFileDate(Now),
>>>
>> 0);
>>
>>> Also, is the a correct way to "finalize" or close a file. Or is the
>>>
>> above
>>
>>> sufficient?
>>>
>>> On 3/20/06, Roger Aelbrecht <Roger.Aelbrecht@xxxxxxxxxxxx> wrote:
>>>
>>>
>>>> Nathan Probst wrote:
>>>>
>>>>
>>>>> Hello all -
>>>>> I'm writing a little app that burns through a disk and slices it into
>>>>> sections to be archived. In search for speed, I'd like to only create
>>>>> TZipMaster once and reuse the instance for subsequent archives. Is
>>>>>
>> this
>>
>>>>> possible? Examples available?
>>>>>
>>>>> Thanks!
>>>>>
>>>>> Nathan Probst
>>>>>
>>>>> -----------
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>>>>>
>>>>>
>>>>>
>>>>>
>>>> Yes that is possible.
>>>> Each time a job is finished you can changes all the properties that
>>>>
>> need
>>
>>>> to be changed for the new archive.
>>>> Properties that probably need to be changed are
>>>> - ZipfileName;
>>>> - FSpecArgs;
>>>> - FSpecArgsExcl;
>>>>
>>>> Then call ZipMaster.Add again.
>>>>
>>>>
>>>> --
>>>> Roger Aelbrecht
>>>>
>>>> -----------
>>>> To unsubscribe from this list, send an empty e-mail
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>>>>
>>>>
>>>
>>> --
>>> Nathan Probst
>>> (970) 402-7384
>>>
>>> -----------
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>>>
>>>
>>>
>> The file is finalised when each function concludes - you don't need to
>> do anything.
>>
>> When finished all operations you can call the Clear function to release
>> the memory used by the different tables and strings - also unloads the
>> dll if it was dynamically loaded.
>>
>> - Russell Peters
>>
>>
>> -----------
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>> message to:
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>>
>>
>
>
>
> --
> Nathan Probst
> (970) 402-7384
>
> -----------
> To unsubscribe from this list, send an empty e-mail
> message to:
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> and put the word unsubscribe in the subject.
>
>
>
Only to reduce the compression level - it defaults to 9 (max) but
reducing it to 7 (or lower) will speed things up a bit.
And avoid encryption - it slows things, also in current dll there is a
bug that will be fixed today (or should be) that prevents encryption
with AddStreamToFile.
- Russell Peters
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