[gnuwin32 - Help] RE: bindtextdomain() and LOCALEDIR in Win32

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https://sourceforge.net/forum/message.php?msg_id=4908090
By: keithmarshall

I've adopted a variation of Tor's technique, for associating POSIX message
catalogues, (gencat --> catopen/catgets), with applications in the MinGW world.
However, since message catalogues are generally specific to a particular application,
I use the path to the *executable*, rather than the path to any DLL, as the
point of reference.

The logic I've adopted is (roughly) as follows:--

1) Identify the executable path name, using the global _pgmptr variable.
2) Strip off the final file name component from resultant path name.
3) If the new final directory name component is either `bin' or `sbin' (ignoring
case), then also strip that off.
4) Append `/share/locale' to the remaining path name.
5) Select message catalogues identified as `%L/%N' [*], within this directory
tree.

In any case, this logic is encapsulated within my port of `catopen()' itself,
so client applications need only to arrange to install their message catalogues
within a `./share/locale' subdirectory of their own installation tree, to ensure
that they will be found at run time.

I have a great deal of respect for Tor's insight, (he also contributes to discussions
on MinGW mailing lists), and I note his comments about the use of
GetModuleFileNameW(), to correctly handle Unicode path names.  It may well be
that my use of _pgmptr in (1) isn't sufficient.  I'd certainly welcome feed
back, and more so patches, should this be the case; the MinGW implementation
of catgets can be found in the MinGW Project CVS, on SourceForge:
http://mingw.cvs.sourceforge.net/mingw/catgets/

Regards,
Keith.

* Per POSIX specification, my port of catopen() uses the LC_MESSAGES or LANG
environment variables to resolve the %L component of the effective NLSPATH.
Since Win32 users will not typically have either of these set, I use the function
call `win32_iso639_default( "LANG" )', (an implementation may be found
at http://mingw.cvs.sourceforge.net/mingw/man/src/win32/winlang.c?revision=1.1&v
iew=markup), in each of my applications, conditional on _WIN32, (a #define in
compat.h effectively makes `win32_iso639_default( anything )' a no-op for other
platforms), *before* calling catopen().

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