LibTiff Mailing List

I was looking though the libtiff V4.0.0beta5 sources, and noticed
that there is probably a discrepancy between the behavior of
Libtiff between MSWindows and Unix like platforms with regard
to filename encoding.

On Unix like systems (tif_unix.c) TIFFOpen calls the open()
with a possibly UTF-8 filename, while in tif_win32.c it calls
CreateFileA(), which doesn't take a UTF-8 argument.

This means that in otherwise platform independent software,
there needs to be some ugly code above libtiff to handle these
two cases

Wouldn't it be better to make TIFFOpen support UTF-8
on both Unix and MSWindows, by making tif_win32.c do
a MultiByteToWideChar() and then use CreateFileW() ?
(or would this create problems in code that expects
there to be differences between the platforms ?)

[TIFFOpenW() could remain for those who have platform
  specific code at that level.]

Graeme Gill.


AWARE [SYSTEMS]		Imaging expertise for the Delphi developer
		TIFF and LibTiff Mailing List Archive
	LibTiff Mailing List TIFF and LibTiff Mailing List Archive February 2010 Previous Thread Next Thread Previous by Thread Next by Thread Previous by Date Next by Date Contact The TIFF Mailing List Homepage This list is run by Frank Warmerdam Archive maintained by AWare Systems	Thread 2010.02.08 12:37 "Libtiff and UTF-8 filename support", by Graeme Gill 2010.02.08 17:03 "Re: Libtiff and UTF-8 filename support", by Bob Friesenhahn 2010.02.08 12:37 "Libtiff and UTF-8 filename support", by Graeme Gill I was looking though the libtiff V4.0.0beta5 sources, and noticed that there is probably a discrepancy between the behavior of Libtiff between MSWindows and Unix like platforms with regard to filename encoding. On Unix like systems (tif_unix.c) TIFFOpen calls the open() with a possibly UTF-8 filename, while in tif_win32.c it calls CreateFileA(), which doesn't take a UTF-8 argument. This means that in otherwise platform independent software, there needs to be some ugly code above libtiff to handle these two cases Wouldn't it be better to make TIFFOpen support UTF-8 on both Unix and MSWindows, by making tif_win32.c do a MultiByteToWideChar() and then use CreateFileW() ? (or would this create problems in code that expects there to be differences between the platforms ?) [TIFFOpenW() could remain for those who have platform specific code at that level.] Graeme Gill.

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2010.02.08 12:37 "Libtiff and UTF-8 filename support", by Graeme Gill