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[[Category:Internationalization]]

==Summary==
My Summary is based on article by Michael Becker (see [http://www.ijon.de/comp/tutorials/locale.html here]).This summary is more or less concerning SuSE-Linux.

There are differences between User-locale and C-locale. C-locale, is the local, which is only effective in C-environment. If there are no locales  set in user environment, then C-locale is effective, which is so called "POSIX"-locale.

With C-command <code>setlocale (LC_ALL,"")</code> one set C-locale with User-locale. So one could retrieve details about User-locale information with C-functions.

==Listing available locales==
There are two directories that one could get information about locales. 
They are:
''/usr/share/locale/''
''/usr/share/i18n/''

In the first directory, the locales are binary files. So we could not need them for our purpose since i do not know how to read them for the moment.

In the second directory there are at least 2 subdirectories, with names charmaps and locales.

Shell command ''ls /usr/share/i18n/locales/'' list all the available locales.

==Checking for default locale==

With shell command "locale" one can get infomation about default locale. 
In C, to get details of localeone can use
<code>setlocale (LC_ALL,"")
localeconv()</code>  
see ''manpage locale(7)'' to get more information.

== Retrieving locale information ==
C-command <code> nl_langinfo() </code>(defined in langinfo.h) one could get information about all categories.  
For example, with <code> nl_langinfo(D_T_FMT)</code>, one get a pointer at a string, which in form of %a %d %b %Y %T %Z.

== Other information ==
Using a parser one could also retrieve locale information,  about which I do not have a lot of idea.

Still there are C-functions to use categories. 
For example,
<code>strftime()
strptime()
wcsftime()</code>
for LC_TIME
For another example,
<code>isalnum
isalpha
isblank</code>
and so on for LC_CTYPE. 

For more information please read [http://www.opengroup.org/onlinepubs/007908799/xbd/locale.html local-Specification of Unix Open]

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