Re: [Haskell-cafe] File name encodings
On Tue, 2008-12-09 at 18:17 -0800, Don Stewart wrote: > Oh, perhaps you want to 'decode' the string that > dirOpenDialog returns. > > redcom: > > Hi Don, > > > > must be doing something wrong. > > > > The messed up string originates from calling Graphics.UI.WX.dirOpenDialog > > and selecting a directory with Umlauts. This is such a huge can of worms. The Gtk open dialog has two functions for returning the selected file name. One returns a string suitable to use with operating system functions like readFile while the other returns a unicode string suitable to display in the user interface. These need not be the same, or even inter-convertible. On Windows they are identical because it uses unicode for file names, however unix uses byte strings and people sometimes use utf8 and sometimes some other locale. So it's not safe to convert a file name to a unicode string and then back again and expect to be saving the same file. Document editor programs typically remember both strings so that it can save the file again even if displaying the file name was lossy (eg due to locale conversion errors like invalid utf8). Yet another reason why FilePath /= String (except on Windows where it does). Duncan ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] File name encodings
Oh, perhaps you want to 'decode' the string that dirOpenDialog returns. redcom: > Hi Don, > > must be doing something wrong. > > The messed up string originates from calling Graphics.UI.WX.dirOpenDialog > and selecting a directory with Umlauts. > > The encode function doesn't seem to help here as it's too far at the end > of the chain. > > Günther > > Am 10.12.2008, 02:45 Uhr, schrieb Don Stewart <[EMAIL PROTECTED]>: > > >redcom: > >>Hi, > >> > >>how can I convert a file name with for example umlauts (ü, ä ... ) into > >>UTF8, or some other format that I can actually use it? > >> > >>Günther > >> > > > >Using the utf8-string package to encode the file name string. > > > >e.g. > > > >x <- readFile (encode "ኃይሌ ገብረሥላሴ") > > > >http://hackage.haskell.org/cgi-bin/hackage-scripts/package/utf8-string > > ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] File name encodings
dons: > redcom: > > Hi, > > > > how can I convert a file name with for example umlauts (ü, ä ... ) into > > UTF8, or some other format that I can actually use it? > > > > Günther > > > > Using the utf8-string package to encode the file name string. > > e.g. > > x <- readFile (encode "ኃይሌ ገብረሥላሴ") > > http://hackage.haskell.org/cgi-bin/hackage-scripts/package/utf8-string In fact, utf8-string readFile already encodes the file name, so http://hackage.haskell.org/packages/archive/utf8-string/0.3.3/doc/html/System-IO-UTF8.html#v%3AreadFile should be enough. -- Don ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] File name encodings
redcom: > Hi, > > how can I convert a file name with for example umlauts (ü, ä ... ) into > UTF8, or some other format that I can actually use it? > > Günther > Using the utf8-string package to encode the file name string. e.g. x <- readFile (encode "ኃይሌ ገብረሥላሴ") http://hackage.haskell.org/cgi-bin/hackage-scripts/package/utf8-string ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
