Re: [RFA] defs.h: Define GDB_DEFAULT_TARGET_[WIDE_]CHARSET for Cygwin and MingW builds

[Corinna Vinschen <vinschen at redhat dot com>]

On Feb 28 18:52, Corinna Vinschen wrote:
> On Feb 28 19:45, Eli Zaretskii wrote:
> > > Date: Sun, 28 Feb 2010 18:05:23 +0100
> > > From: Corinna Vinschen <vinschen@redhat.com>
> > > 
> > > > > +#define GDB_DEFAULT_TARGET_CHARSET "CP1252"
> > > > > +#endif
> > > > 
> > > > Why cp1252? why not detect the ANSI codepage at run time, and make
> > > > more non-Latin users happy?
> > > 
> > > How?  Is there somewhere a function which converts a Windows codepage 
> > > number into a iconv compatible codeset string?
> > 
> > Sorry, I'm not following: last time I looked, iconv supported cpNNNN
> > codepages out of the box.  This is from an Ubuntu GNU/Linux system:
> > 
> >   $ iconv --version
> >   iconv (GNU libiconv 1.11)
> >   $ iconv --list | egrep "^CP"
> >   CP819 IBM819 ISO-8859-1 ISO-IR-100 ISO8859-1 ISO_8859-1 ISO_8859-1:1987 L1 LATIN1 CSISOLATIN1
> >   CP1250 MS-EE WINDOWS-1250
> >   CP1251 MS-CYRL WINDOWS-1251
> >   CP1252 MS-ANSI WINDOWS-1252
> >   CP1253 MS-GREEK WINDOWS-1253
> >   CP1254 MS-TURK WINDOWS-1254
> >   CP1255 MS-HEBR WINDOWS-1255
> >   CP1256 MS-ARAB WINDOWS-1256
> >   CP1257 WINBALTRIM WINDOWS-1257
> >   CP1258 WINDOWS-1258
> >   CP154 CYRILLIC-ASIAN PT154 PTCP154 CSPTCP154
> >   CP1133 IBM-CP1133
> >   CP874 WINDOWS-874
> >   CP932
> >   CP936 MS936 WINDOWS-936
> >   CP950
> >   CP949 UHC
> >   CP1361 JOHAB
> > 
> > What am I missing?
> 
> Windows has a function GetACP() which returns the current ANSI
> codepage.  iconv wants a string which determines the source and
> target codesets.  I don't know any function in Windows which 
> converts a codepage number into an iconv-compatible codeset name.

Erm.  Looks I wasn't thinking at all.  Since every codepage seems
to be simply avaiable as "CPxxx", it can be easily constructed,
apparently.

So this:

  #define GDB_DEFAULT_TARGET_CHARSET get_cp()

  char *
  get_cp ()
  {
    char buf[32];

    snprintf (buf, 32, "CP%u", GetACP ());
  }

should do it, right?


Corinna

-- 
Corinna Vinschen
Cygwin Project Co-Leader
Red Hat