Re: setlocale ?

[CdeMills]

John W. Eaton wrote:
> 
> When I wrote that, I was thinking of things like textread and the
> Octave parser itself.  It looks like textread may ultimately use C++
> library functions to read numbers, so locale settings may help.  But
> the parser does not recognize numbers that way, so it would not
> automatically follow locale conventions just by calling setlocale.
> 

Hello,
C++ locales are different beast from C locales. The key is to call member
function imbue() on streams. To keep thing safe, I have added the ability
for fscanf and sscanf ONLY to use their third argument as a locale
indicator. The function imbue() is appropriately called on the stream passed
as arguement only.
To this end, I modified oct-stream.h and file-io.cc. The patch has been
submitted on Savanah, item #34495. With it, I get

octave:3>x=sscanf("3,1416", "%f", "fr_BE")
x =  3.1416

Note that the decimal separator has been correctly interpreted. A "make
check" resulted in a single failure in svds.m

This is totally compatible with old scripts, as "C" is the locales "classic"
style name.

Todo: implement the same for scanf. Unfortunatelly, it's a wrapper for
Ffscanf, and I didn't find the implementation inside the sources.

Regards

Pascal

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