C++Talk.NET C++ language newsgroups   Archives   FAQ   Search   Memberlist   Usergroups   Register   Profile   Log in to check your private messages   Log in  Q: Locale independant way to process special chars          C++Talk.NET Forum Index -> C++ language (comp.lang.c++) View previous topic :: View next topic   Author Message Jakob Bieling Guest Posted: Sun Aug 29, 2004 4:22 pm    Post subject: Q: Locale independant way to process special chars Hi, Did not really know a short subject line, which describes my question better. I want to figure out, if a specific character is an alphabetic character, without having to be locale specific. For example, even tho the Umlaut a (ie. 'ä') is not in part of the English alphabet, it is part of the German alphabet. Despite that, I would like the Umlaut a to be recognised as an alphabetic character, without having to switch locales; otherwise, I would have to loop thru all different locales, just to find out, if a character is part of the alphabet of any of these. Tho my documentation tells me that 'for iswalpha, the result of the test condition is independent of locale', it still returns 0 for the Umlaut a. Is my C++ implementation broken or did I just misunderstand something? Thanks! -- jb (reply address in rot13, unscramble first) Back to top David Hilsee Guest Posted: Sun Aug 29, 2004 8:55 pm    Post subject: Re: Locale independant way to process special chars "Jakob Bieling" <argfhesNGtzkQBGarg (AT) rot13 (DOT) com> wrote Quote: Hi, Did not really know a short subject line, which describes my question better. I want to figure out, if a specific character is an alphabetic character, without having to be locale specific. For example, even tho the Umlaut a (ie. 'ä') is not in part of the English alphabet, it is part of the German alphabet. Despite that, I would like the Umlaut a to be recognised as an alphabetic character, without having to switch locales; otherwise, I would have to loop thru all different locales, just to find out, if a character is part of the alphabet of any of these. I would be surprised if there were a single standard function call that did what you need to do. It sounds like an odd bit of functionality that most people would never use. Why would you want to know if a character is an alpabetic character in any locale? Is a loop not feasible? Quote: Tho my documentation tells me that 'for iswalpha, the result of the test condition is independent of locale', it still returns 0 for the Umlaut a. Is my C++ implementation broken or did I just misunderstand something? I would assume that this means that, for any input, the return value of iswalpha will not change when the current locale changes. -- David Hilsee Back to top David Hilsee Guest Posted: Sun Aug 29, 2004 9:23 pm    Post subject: Re: Locale independant way to process special chars "Jakob Bieling" <argfhesNGtzkQBGarg (AT) rot13 (DOT) com> wrote <snip> Quote: Tho my documentation tells me that 'for iswalpha, the result of the test condition is independent of locale', it still returns 0 for the Umlaut a. Is my C++ implementation broken or did I just misunderstand something? FWIW, std::iswalpha(L'ä') returned true on VS.NET 2003 Win2K Pro. -- David Hilsee Back to top Jakob Bieling Guest Posted: Mon Aug 30, 2004 8:38 am    Post subject: Re: Locale independant way to process special chars "David Hilsee" <davidhilseenews (AT) yahoo (DOT) com> wrote Quote: "Jakob Bieling" <argfhesNGtzkQBGarg (AT) rot13 (DOT) com> wrote in message news:cgsvr6$c0g$04$1 (AT) news (DOT) t-online.com... snip Tho my documentation tells me that 'for iswalpha, the result of the test condition is independent of locale', it still returns 0 for the Umlaut a. Is my C++ implementation broken or did I just misunderstand something? FWIW, std::iswalpha(L'ä') returned true on VS.NET 2003 Win2K Pro. Ah, thanks for the hint. My fault, I passed a char without converting to unsigned first, so the sign was expanded in the implicit conversion, which made it return 0. It all works now, thanks! -- jb (reply address in rot13, unscramble first) Back to top Display posts from previous: All Posts1 Day7 Days2 Weeks1 Month3 Months6 Months1 Year Oldest FirstNewest First         C++Talk.NET Forum Index -> C++ language (comp.lang.c++) All times are GMT Page 1 of 1   Jump to: Select a forum C/C++----------------C LanguageC Language (Moderated)C++ Language (Moderated)C++ language (comp.lang.c++)C++ language, library and standards Non-English C/C++ Newsgroups----------------C++ (German)C++ (French)  You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot vote in polls in this forum Powered by phpBB © 2001, 2006 phpBB Group SEO toolkit © 2004-2006 webmedic.