[Lazarus] ForceDirectoriesUTF8

[Xiangrong Fang]

> I would think that that depends on where you get the value for
> ForceDirectories(UTF8) from.
> If this vale is obtained from any widget (OpenDialog, TEdit, etc.) the
> encoding of the value is in UTF-8.
> If however you get the value as a commandline parameter, then it is in
> system-encoding if you use ParamStr(), but in UTF-8 if you use
> ParamStrUTF8().

That's what I guessed, so Instead of using UTF8 version I would use this to
ensure cross platform correctness:

Path := SelectDirectoryDialog1.FileName;
ForceDirectories(UTF8Decode(Path));

Right? Yesterday I found in this post (which triggered me to ask the
question initially):

http://lists.lazarus.freepascal.org/pipermail/lazarus/2012-April/073170.html

Such problems may (should) go away with the new Unicode- and AnsiString
types, where AnsiString contains an Encoding field. Then the conversion
between UTF-8 and the system codepage are done automatically, whenever
required, and the xyUTF8 functions can be dropped then.

If so, we shall avoid using **UTF8 functions at all.


2013/3/3 Bart <bartjunk64 at gmail.com>

> On 3/2/13, Xiangrong Fang <xrfang at gmail.com> wrote:
>
> > In order to write cross platform programs, shall I use ForceDirectories
> or
> > ForceDirectoriesUTF8?  I would like to:
>
> I would think that that depends on where you get the value for
> ForceDirectories(UTF8) from.
> If this vale is obtained from any widget (OpenDialog, TEdit, etc.) the
> encoding of the value is in UTF-8.
> If however you get the value as a commandline parameter, then it is in
> system-encoding if you use ParamStr(), but in UTF-8 if you use
> ParamStrUTF8().
>
> So you would use:
>
> Path := ParamStr(1);
> ForceDirectories(Path);
>
> or
>
> Path := SelectDirectoryDialog1.FileName;
> ForceDirectoriesUtf8(Path);
>
> You need to be sure which encoding a string has when you pass it on to
> such procedures/functions.
>
> Bart
>
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