diff options
Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/doc/xml/manual/ctype.xml')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/doc/xml/manual/ctype.xml | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/doc/xml/manual/ctype.xml b/gcc-4.4.3/libstdc++-v3/doc/xml/manual/ctype.xml new file mode 100644 index 000000000..58f08fbdb --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/doc/xml/manual/ctype.xml @@ -0,0 +1,259 @@ +<sect1 id="manual.localization.facet.ctype" xreflabel="ctype"> +<?dbhtml filename="ctype.html"?> + +<sect1info> + <keywordset> + <keyword> + ISO C++ + </keyword> + <keyword> + ctype + </keyword> + </keywordset> +</sect1info> + +<title>ctype</title> + +<sect2 id="facet.ctype.impl" xreflabel="facet.ctype.impl"> +<title>Implementation</title> + + <sect3> + <title>Specializations</title> + +<para> +For the required specialization codecvt<wchar_t, char, mbstate_t> , +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. +</para> + +<para> +The two required specializations are implemented as follows: +</para> + +<para> +<code> +ctype<char> +</code> +</para> +<para> +This is simple specialization. Implementing this was a piece of cake. +</para> + +<para> +<code> +ctype<wchar_t> +</code> +</para> +<para> +This specialization, by specifying all the template parameters, pretty +much ties the hands of implementors. As such, the implementation is +straightforward, involving mcsrtombs for the conversions between char +to wchar_t and wcsrtombs for conversions between wchar_t and char. +</para> + +<para> +Neither of these two required specializations deals with Unicode +characters. +</para> + + </sect3> +</sect2> + +<sect2 id="facet.ctype.future" xreflabel="facet.ctype.future"> +<title>Future</title> + + +<itemizedlist> + <listitem> + <para> + How to deal with the global locale issue? + </para></listitem> + + <listitem> + <para> + How to deal with different types than char, wchar_t? </para></listitem> + + <listitem><para> + Overlap between codecvt/ctype: narrow/widen + </para></listitem> + + <listitem> + <para> + Mask typedef in codecvt_base, argument types in codecvt. what + is know about this type? + </para></listitem> + + <listitem> + <para> + Why mask* argument in codecvt? + </para></listitem> + + <listitem> + <para> + Can this be made (more) generic? is there a simple way to + straighten out the configure-time mess that is a by-product of + this class? + </para></listitem> + + <listitem> + <para> + Get the ctype<wchar_t>::mask stuff under control. Need to + make some kind of static table, and not do lookup every time + somebody hits the do_is... functions. Too bad we can't just + redefine mask for ctype<wchar_t> + </para></listitem> + + <listitem> + <para> + Rename abstract base class. See if just smash-overriding is a + better approach. Clarify, add sanity to naming. + </para> + </listitem> + +</itemizedlist> + + +</sect2> + + +<bibliography id="facet.ctype.biblio" xreflabel="facet.ctype.biblio"> +<title>Bibliography</title> + + <biblioentry> + <title> + The GNU C Library + </title> + + <author> + <surname>McGrath</surname> + <firstname>Roland</firstname> + </author> + <author> + <surname>Drepper</surname> + <firstname>Ulrich</firstname> + </author> + + <copyright> + <year>2007</year> + <holder>FSF</holder> + </copyright> + <pagenums>Chapters 6 Character Set Handling and 7 Locales and Internationalization</pagenums> + + </biblioentry> + + <biblioentry> + <title> + Correspondence + </title> + + <author> + <surname>Drepper</surname> + <firstname>Ulrich</firstname> + </author> + + <copyright> + <year>2002</year> + <holder></holder> + </copyright> + </biblioentry> + + <biblioentry> + <title> + ISO/IEC 14882:1998 Programming languages - C++ + </title> + + <copyright> + <year>1998</year> + <holder>ISO</holder> + </copyright> + </biblioentry> + + <biblioentry> + <title> + ISO/IEC 9899:1999 Programming languages - C + </title> + + <copyright> + <year>1999</year> + <holder>ISO</holder> + </copyright> + </biblioentry> + + <biblioentry> + <title> + System Interface Definitions, Issue 6 (IEEE Std. 1003.1-200x) + </title> + + <copyright> + <year>1999</year> + <holder> + The Open Group/The Institute of Electrical and Electronics Engineers, Inc.</holder> + </copyright> + + <biblioid> + <ulink url="http://www.opennc.org/austin/docreg.html"> + </ulink> + </biblioid> + + </biblioentry> + + <biblioentry> + <title> + The C++ Programming Language, Special Edition + </title> + + <author> + <surname>Stroustrup</surname> + <firstname>Bjarne</firstname> + </author> + + <copyright> + <year>2000</year> + <holder>Addison Wesley, Inc.</holder> + </copyright> + <pagenums>Appendix D</pagenums> + + <publisher> + <publishername> + Addison Wesley + </publishername> + </publisher> + + </biblioentry> + + + <biblioentry> + <title> + Standard C++ IOStreams and Locales + </title> + <subtitle> + Advanced Programmer's Guide and Reference + </subtitle> + + <author> + <surname>Langer</surname> + <firstname>Angelika</firstname> + </author> + + <author> + <surname>Kreft</surname> + <firstname>Klaus</firstname> + </author> + + <copyright> + <year>2000</year> + <holder>Addison Wesley Longman, Inc.</holder> + </copyright> + + <publisher> + <publishername> + Addison Wesley Longman + </publishername> + </publisher> + + </biblioentry> + +</bibliography> + +</sect1> |