gcc/libstdc++-v3/docs/html/22_locale/locale.html

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  <H1>
  Notes on the locale implementation.
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<I>
prepared by Benjamin Kosnik (bkoz@redhat.com) on September 15, 2000
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1. Abstract
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2. What the standard says
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3. Problems with &quot;C&quot; locales : global locales, termination.
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For the required specialization codecvt&lt;wchar_t, char, mbstate_t&gt; ,
conversions are made between the internal character set (always UCS4
on GNU/Linux) and whatever the currently selected locale for the
LC_CTYPE category implements.

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4. Design
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The two required specializations are implemented as follows:


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<H2>
5.  Examples
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<pre>
  typedef ctype<char> cctype;
</pre>

More information can be found in the following testcases:
<UL>
<LI> testsuite/22_locale/ctype_char_members.cc
<LI> testsuite/22_locale/ctype_wchar_t_members.cc
</UL>

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6.  Unresolved Issues
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<UL>
	<LI> locale -a displays available locales on linux

	<LI> locale initialization: at what point does _S_classic,
	_S_global get initialized? Can named locales assume this
	initialization has already taken place?
</UL>


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7. Acknowledgments
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8. Bibliography / Referenced Documents
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Drepper, Ulrich, GNU libc (glibc) 2.2 manual. In particular, Chapters &quot;6. Character Set Handling&quot; and &quot;7 Locales and Internationalization&quot;

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Drepper, Ulrich, Numerous, late-night email correspondence

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ISO/IEC 14882:1998 Programming languages - C++

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ISO/IEC 9899:1999 Programming languages - C

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Langer, Angelika and Klaus Kreft, Standard C++ IOStreams and Locales, Advanced Programmer's Guide and Reference, Addison Wesley Longman, Inc. 2000

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Stroustrup, Bjarne, Appendix D, The C++ Programming Language, Special Edition, Addison Wesley, Inc. 2000

<P>
System Interface Definitions, Issue 6 (IEEE Std. 1003.1-200x)
The Open Group/The Institute of Electrical and Electronics Engineers, Inc.
http://www.opennc.org/austin/docreg.html