Review Request 110043: Proposed fix/workaround for legacy encoded filename handling

[Christoph Feck]

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Nice idea, would be better to use Unicode Private Use Areas instead of 0x18000 codes.

- Christoph Feck


On April 16, 2013, 2:59 p.m., Róbert Szókovács wrote:
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> http://git.reviewboard.kde.org/r/110043/
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> (Updated April 16, 2013, 2:59 p.m.)
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> Review request for kdelibs.
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> Description
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> This patch works around the problem of filenames that are not valid UTF8 strings:  in KLocalePrivate::initFileNameEncoding() KDE sets the QFile's encoding/decoding function, to to/fromUTF8() in QString, which in turn calls QUtf8's converter function (QUtf8 is not exported to developers, so I had to use an inefficient method, I think it would be better if we could use the state parameter for error detection). I replaced this with the said functions' copy/pasted version and changed it, so when it encounters an invalid UTF8 string, it will encode it byte by byte, mapping the lower 128 their normal unicode place and the upper 128 to U+18000-U+1807F, and of course the decoder reverses it. 
> To make this actually work you have to define the KDE_UTF8_FILENAMES enviroment variable to a specific value ("broken_names").
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> To test it, do the following: .kde/env/KDE_UTF8_FILENAMES.sh with this content: 
> export KDE_UTF8_FILENAMES=broken_names
> logout, login, try dolphin on faulty files. (instead of the usual boxed "?" you'll see just boxes)
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> This addresses bug 165044.
>     http://bugs.kde.org/show_bug.cgi?id=165044
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> Diffs
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>   kdecore/localization/klocale_kde.cpp b010e74 
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> Diff: http://git.reviewboard.kde.org/r/110043/diff/
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> Testing
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> Thanks,
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> Róbert Szókovács
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