[yunqa.de] Re: Install DIHTMLParser with DISQlite?
- From: Artur Aschmoneit <ArturAschmoneit@xxxxxx>
- To: yunqa@xxxxxxxxxxxxx
- Date: Sat, 26 Dec 2009 15:44:09 +0100
Ralf,
thank you very much!
Artur
Delphi Inspiration schrieb:
> At 18:21 22.12.2009, Artur Aschmoneit wrote:
>
>
>> I cannot install DIHTMLParser because DISQLite contains unit DISystemCompat.
>>
>
> Since Delphi 2009, DISystemCompat.pas is included in most of my products to
> prodivde backward compatability routines (UTF-8 conversion, for example) and
> types (UnicodeString, etc.) to older Delphi version. In gerneral, sharing
> files between libraries is a good thing: It avoids redundancies, keeps the
> footprint low, and propagates bug fixes.
>
> Following this concept, Delphi rejects multiple copies of the same units in
> its IDE packages. After all, this is the purpose of packages: Include
> everything once only! So Delphi is right in letting us know if a new package
> contains a file already installed in another package. Unfortunately, this is
> confusing to some users as they do not know how to resolve this conflict.
>
> The solution is to remove the explicitly needed duplicate unit from any 2nd
> or 3rd packages: So if you have already installed DISQLite3, open the
> DIHtmlParser package, select DISystemCompat.pas in the project manager and
> remove it via the toolbar button or context menu. Next rebuild and install
> the package. Delphi should now detect that DISystemCompat.pas is already
> contained in the DISQLite3 package and suggest to add it to the DIHtmlParser
> package. Confirm the notification dialog and DIHtmlParser should install
> successfully. (Just tested again with DISQLite3 2.1.2 and DIHtmlParser 5.1.1
> on Delphi 7 and Delphi 2010.)
>
> The above method does not care if the two products are extracted into
> different directories. But if you do so, you are left with two copies of
> DISystemCompat.pas. Instead, I recommend to extract both products into the
> same, single directory. Start with the "oldest" product (DISQLite3 at the
> time of this writing) and finish off with the most recent. This will
> overwrite existing versions of duplicate files with newer ones, ensuring
> single copies only which are always the latest version.
>
> Ralf
>
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